Article Per Year (5 Year)
p-Index From 2021 - 2026
6.791
P-Index
This Author published in this journals
All Journal Jurnal Rekayasa Proses Jurnal Pendidikan Karakter Jurnal Kependidikan: Penelitian Inovasi Pembelajaran MAJALAH ILMIAH PEMBELAJARAN JPTK: Jurnal Pendidikan Teknologi dan Kejuruan INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni Rotasi METANA Mechatronics, Electrical Power, and Vehicular Technology JURNAL TEKNIK MESIN Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Bahan Alam Terbarukan Majalah Ilmiah MOMENTUM Jurnal Manajemen Dayasaing Jurnal Rekayasa Mesin Indonesian Journal of Guidance and Counseling: Theory and Application Jurnal Akuntansi dan Pajak Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan JPM (Jurnal Pemberdayaan Masyarakat) Civil Engineering Journal CIVICUS : Pendidikan-Penelitian-Pengabdian Pendidikan Pancasila dan Kewarganegaraan Indonesia Journal of Halal Jurnal Rekayasa Proses Zawiyah: Jurnal Pemikiran Islam Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Jurnal Nasional Komputasi dan Teknologi Informasi Jurnal Inovasi Teknik Kimia BERNAS: Jurnal Pengabdian Kepada Masyarakat Ilmu Pendidikan Equilibrium Journal of Chemical Engineering Jurnal Pendidikan Vokasi Otomotif International Journal of Business, Economics, and Social Development Jurnal Pengabdian dan Pengembangan Masyarakat Indonesia Surakarta Civil Engineering Review Journal of Governance and Social Policy JISIP UNJA (Jurnal Ilmu Sosial Ilmu Politik Universitas Jambi) IJLHE: International Journal of Language, Humanities, and Education Jurnal Profesi Insinyur Indonesia International Journal of Renewable Energy Development Jurnal Teknik Indonesia Dinamika Kerajinan dan Batik: Majalah Ilmiah
Paryanto
UNY
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Public Health Social Sciences Transportation Veterinary Other

Published : 79 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 79 Documents
Search

 4   5   6   7   8 
Pemanfaatan Limbah Kulit Kopi Sebagai Energi dengan Menggunakan Teknologi Gasifikasi Downdraft Three-Stage Gasifier Mujiarto, Sigit; Paryanto, Paryanto; Susanty, Aries
Jurnal Profesi Insinyur Indonesia Vol 3, No 3 (2025): JPII:
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpii.2025.26870

Abstract

Indonesia memerlukan energi yang besar seiring pertumbuhan penduduk dan industri saat ini. Energi fosil yang digunakan secara besar-besaran mengakibatkan terjadinya emisi di lingkungan dan pemanasan global, sehingga diperlukan sumber energi yang baru dari energi alternatif yang ramah lingkungan untuk mengurangi tingginya emisi yang terjadi. Limbah kulit kopi di Indonesia juga mengalami peningkatan setiap tahunnya, dengan meningkatnya produksi setiap tahunnya menjadi produsen kopi terbesar ke-4 dunia. Tujuan dari penelitian ini adalah (i) mengatasi permasalahan energi dan (ii) mengatasi limbah kulit kopi dengan menjadikan limbah kulit kopi menjadi energi menggunakan teknologi gasifikasi downdraft menggunakan tiga tingkat laluan udara. Kulit kopi mula-mula yang sudah dikeringkan dengan ukuran 3-5 mm dimasukkan ke dalam gasifier, kemudian gasifier mulai dinyalakan sampai tercapai temperatur yang diinginkan dan keluar syngas-nya. Variasi yang dipakai adalah variasi air fuel ratio (AFR) 1,63;1,65; 1,67; 1,7. Hasil penelitian didapatkan bahwa LHV syngas tertinggi pada sampel AFR 1,65 dengan nilai 130,565 KJ/kg. Hasil ini bisa dipakai sebagai pangkalan data untuk pengembangan pemanfaatan limbah kulit kopi menjadi energi alternatif yang akan datang. Kata kunci: energi, kulit kopi, gasifikasi, downdraft, tiga tingkat laluan
Penerapan Teknologi Silase dan Fermentasi untuk Ketahanan Pakan Ternak di Daerah Sub-optimal Rejosari - Bantul Susanti, Ari Diana; Cahyadi, Muhammad; Paryanto, Paryanto; Fadilah, Fadilah
Jurnal Pemberdayaan Masyarakat Vol 6 No 1 (2021): Mei
Publisher : Direktorat Penelitian dan Pengabdian kepada Masyarakat (DPPM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21067/jpm.v6i1.4983

Abstract

The availability of ruminant feed in terms of amount and nutritional adequacy is a common problem during the dry season. This condition is worst at the peak of the dry season (July - October) such as that faced by the Kelompok Tani Rukun Binantu of Rejosari in Bantul Regency - Yogyakarta. Pre-survey shows that the cost of feed in the dry season is uncompetitive to the price of cattle. This problem was solved by Program Kemitraan Masyarakat (PKM – UNS) 2020 with workshop in cattle feed preservation using silage and fermentation techniques. The silage technique is used in conventional-local forage, while the fermentation technique is aimed at preserving low-nutrient animal feed as well as improving digestibility and nutritional adequacy of the feed. Product’s monitoring and evaluation are carried out after 7 days for fermentation technique and 21 days for silage technique. The program is success in solving of Mitra’s problems and it is also one of Tri Dharma Perguruan Tinggi in technology transfer for rural communities.
Evaluation of the Effectiveness of Adaptive Learning Systems in Higher Education with System Usability Scale Purwandari, Endina Putri; Paryanto, Paryanto; Winarni, Endang Widi; Erlansari, Aan; Putra, Yusran Panca
Jurnal Nasional Komputasi dan Teknologi Informasi (JNKTI) Vol 9, No 1 (2026): Februari 2026
Publisher : Program Studi Teknik Komputer, Fakultas Teknik. Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jnkti.v9i1.10003

Abstract

Abstract - Adaptive learning systems adapt instructional materials to students' needs through personalized learning paths, changing the layout interface, or hiding some material links. The System Usability Scale (SUS) focuses on developing a usability assessment for an adaptive education system, using an approach that asks users to evaluate web pages. This research was conducted with first-semester students in the Computer Programming subject from the Information Systems Study Program, Faculty of Engineering, University of Bengkulu. Based on the SUS calculation, the application achieved a score of 75.08. This result falls within the 68-80.3 range, placing the program product at the "Good" level. This indicates that overall user satisfaction with the adaptive online learning system is acceptable. However, there are some areas that require repairs, especially those related to inconsistent functionality and user convenience. Further study can continue to use Concurrent Think Aloud (CTA) and test scenarios for each use case to gain insight into user behavior as users interact with the application in the moment.Keywords: Evaluation; Online Learning Systems; Adaptive; System Usability Scale; Abstrak - Sistem pembelajaran daring adaptif menyesuaikan materi pembelajaran dengan kebutuhan siswa melalui jalur pembelajaran yang dipersonalisasi, mengubah tata letak antarmuka, atau menyembunyikan beberapa tautan. Metode System Usability Scale (SUS) berfokus pada pengembangan sistem penilaian kegunaan untuk sistem pendidikan daring adaptif, menggunakan pendekatan yang meminta pengguna untuk mengevaluasi halaman web. Penelitian ini dilakukan pada mahasiswa semester pertama program studi Ilmu Komputer dan Pemrograman Program Studi Sistem Informasi, Fakultas Teknik, Universitas Bengkulu. Hasil perhitungan SUS menghasilkan skor 75,08. Hasil ini berada dalam kisaran 68 hingga 80,3, menempatkan produk program pada tingkat "Baik". Ini menunjukkan bahwa kepuasan pengguna secara keseluruhan terhadap sistem pembelajaran daring adaptif dapat diterima. Namun, ada beberapa area yang perlu ditingkatkan, khususnya mengenai inkonsistensi dalam fungsionalitas dan kemudahan penggunaan. Penelitian lebih lanjut dapat menggunakan Concurrent Think Aloud (CTA) dan skenario pengujian untuk setiap kasus penggunaan untuk mendapatkan wawasan yang lebih dalam tentang perilaku pengguna saat berinteraksi dengan aplikasi.Kata kunci: Evaluasi; Sistem Pembelajaran Daring; Adaptif; System Usability Scale;
Tannins Compound In Soga Tingi Bark (Ceriops Tagal) As Natural Dyes Paryanto, Paryanto; Pranolo, Sunu Herwi; Susanti, Ari Diana; Putrikatama, Bintang Timur; Qatrunada, I. R.; Wibowo, Angga Dwi
Equilibrium Journal of Chemical Engineering Vol 5, No 1 (2021): Volume 5, No 1 July 2021
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v5i1.48505

Abstract

In general, natural dyes for textile materials are obtained from extracts part of the plants such as roots, wood, leaves, seeds, and flower. Textile industry especially batik craftsman, have known many plants that can dye textile materials, such as indigo (indigofera), soga tingi bark (Ceriops tagal), tegeran wood (Cudraina javanensis), turmeric (Curcuma), tea (The), noni root (Morinda citrifelia), soga jambal bark (Pelthophorum ferruginum), kesumba (Bixa orelana), and guava leaf (Psidiumguajava). Soga tingi bark chosen because it can produce tannins which can be used as natural dyes. The purpose of this research was to obtained tannin content in soga tingi bark as qualitatively and quantitatively. The analysis carried out is FTIR and HPLC method. FTIR analysis carried out to determine of the compounds contained in the soga tingi bark extraction. Based on FTIR analysis it can be seen that there are O-H and N-H group in the wavenumber 3375,13 cm-1. C=O bond at wavenumber 1739,16 cm-1. C=C bond at wavenumber 1624,31 cm-1. C-H bond at wavenumbers 2970,72 cm-1, 1456,39 cm-1, and 1365,74 cm-1. NO2 bond at wavenumber 1365,74 cm-1. C-N bond at wavenumbers 1228,69 cm-1 and 1217,34 cm-1. And C-O bond at wavenumbers 1228,69 cm-1, 1217,34 cm-1, and 1052,3 cm-1. While HPLC analysis carried out to determine contains tannin level in the soga tingi bark extraction. HPLC conditions used are Flowrate: 1 mL/min, Mobile phase: MeOH : H2O (50:50), λ: 271 nm and Column: C18, 250 mm. Based on HPLC analysis it is known that the contains tannin level in the soga tingi bark extraction is 22,44 ppm.
Evaluasi Kinerja IPAL Individual SANFAB ST 600 dengan Penambahan Anaerobic Granule Bacteria terhadap Outlet IPAL Domestik di Dusun Karangmojo, Boyolali Waluyo, Joko; Paryanto, Paryanto; Margono, Margono; Wigati, Sofiana Mukti; Rachmadhani, Shafira; Pranoto, Ibnu Singgih; Cahyani, Yulinar Pramesti
Equilibrium Journal of Chemical Engineering Vol 6, No 1 (2022): Volume 6, No 1 July 2022
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v6i1.61498

Abstract

ABSTRAK. Kabupaten Boyolali memiliki jumlah penduduk tertinggi kedua di eks-Karesidenan Surakarta sehingga limbah cair domestik yang dihasilkan juga tinggi. Hal ini mendorong upaya pengelolaan limbah domestik menggunakan SANFAB ST 600. Penelitian ini bertujuan untuk mengetahui efektivitas kinerja IPAL Individual SANFAB ST 600 setelah diberi perlakuan dengan Anaerobic Granule Bacteria. SANFAB ST 600 memiliki volume 600 L dan berkapasitas 1-4 orang. Air limbah rumah tangga yang dialirkan ke inlet ST akan menuju ke settler, selanjutnya mengalir secara upstream dalam unit Anaerobic Filter dan terjadi penguraian zat pencemar oleh bakteri anaerobik. Pengambilan sampel dilakukan pada dua rumah di Dusun Karangmojo, Kabupaten Boyolali. Sampel diuji di BLKK Yogyakarta untuk parameter TSS, COD, BOD, konsentrasi Amonia, pH, dan ORP. Pada minggu ketiga di Rumah Bapak Wahyudi, karakteristik outlet ST memiliki nilai TSS 25,5 mg/L, Amonia 0,255 mg/L, BOD 25,01 mg/L, dan COD 47,92 mg/L sehingga sudah sesuai baku mutu. Dari hasil uji dilakukan perhitungan efektivitas pengolahan TSS, BOD, dan COD dengan cara menghitung selisih konstanta inlet dan outlet dibagi dengan konstanta inlet serta perhitungan rasio BOD/COD dengan membagi kadar COD dan BOD setiap sampel. Dari sumber limbah WC dan kamar mandi (Rumah Bapak Wahyudi) bakteri bekerja lebih efektif dibanding sumber limbah WC (Rumah Bapak Somowirejo) dengan efisiensi lebih dari 80% pada minggu ketiga penambahan bakteri.  Kata kunci: Anaerobic Granule Bacteria, Efisiensi, Limbah Domestik, IPAL ST 600 ABSTRACT. Boyolali Regency has the second highest population in the residence of Surakarta so the domestic wastewater generation is also high. This led to the management of domestic wastewater using Individual WWTP SANFAB ST 600. This study aims to determine the effectiveness of Individual WWTP SANFAB ST 600 after being treated with Anaerobic Granule Bacteria. The SANFAB ST 600 has a volume of 600 L and a capacity of 1-4 people. Domestic wastewater that flows into the ST inlet will go to the settler, then flows upstream into the Anaerobic Filter unit and decomposed by anaerobic bacteria. Sampling was carried out at two houses in Karangmojo, Boyolali Regency. Samples were tested at BLKK Yogyakarta for parameters of TSS, COD, BOD, Ammonia concentration, pH, and ORP. In the third week at Wahyudi's house, the characteristics of the ST outlet had a value of TSS 25.5 mg/L, Ammonia 0.255 mg/L, BOD 25.01 mg/L, and COD 47.92 mg/L so it already suitable with the standard. From the test results, the effectiveness of TSS, BOD, and COD reduction is calculated by the difference between the inlet and outlet constants divided by the inlet constant and also calculating the BOD/COD ratio by dividing the COD and BOD levels of each sample. From the source of WC and bathroom waste (Mr. Wahyudi's House) the bacteria worked more effectively than the WC source (Mr. Somowirejo's House) with an efficiency of more than 80% in the third week after bacteria addition.Keywords: Anaerobic Granule Bacteria, Efficiency, Domestic Wastewater, IPAL ST 600
Optimizing Bioky Performance Using Super Small Vessel in Wastewater Treatment Installation at PT. X in Klaten Waluyo, Joko; paryanto, paryanto; Alamsyah, Raihan; Kurniawan, Deni; Pranoto, Ibnu Singgih; Cahyani, Yulinar Pramesti
Equilibrium Journal of Chemical Engineering Vol 8, No 1 (2024): Volume 8, No 1 July 2024
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v8i1.84831

Abstract

One of the causes of environmental pollution is liquid waste generated by industries, especially the printing industry. PT Macanan Jaya Cemerlang is one of the printing industries producing liquid waste that does not meet the quality standards. The purpose of this research is to optimize the performance of Bioky bacteria using the Super Small Vessel in the wastewater treatment plant at PT X Klaten. Treatment involves testing variables such as residence time and bacteria quantity's impact on TSS, MBAS, COD, BOD, pH, and ORP.The study employs anaerobic treatment with observed variables: residence time of 1; 2; and 3 days, and bacteria quantity of 2.4; 3.2; and 4 liters. Samples from each variable are then analyzed for pH, ORP, and TSS. COD, BOD, and MBAS are tested after obtaining the best TSS results from each variable.The research results indicate that longer residence time and increased bacteria quantity lead to greater reduction in TSS, COD, BOD, and MBAS, while pH approaches neutrality. Optimal conditions occur at a 3-day residence time with 4,0 liters of bacteria, resulting in a reduction of TSS, COD, BOD, and MBAS against the inlet by 99.75%, 95.47%, 94.84%, and 26.72%. Although the treated waste doesn't meet the established standards, it effectively reduces the pollution levels in PT X's wastewater. Keywords:Anaerobic, Efficiency, Printing Industry Liquid Waste, Super Small Vessel
Characterization and Combustion Kinetics of Binderless and Bindered Dry Cow Dung Bio-Pellets Wibowo, Wusana Agung; Susanti, Ari Diana; Paryanto, Paryanto
Equilibrium Journal of Chemical Engineering Vol 8, No 1 (2024): Volume 8, No 1 July 2024
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v8i1.83645

Abstract

The effect of molasses addition as a binder in the manufacturing of cow dung bio-pellets on their characteristics and combustion kinetics have been studied. The bio-pellets characterization included the physical and mechanical properties as well as the proximate analysis and calorific values. Thermogravimetric analysis (TGA) was carried out using a macro-TGA apparatus under a non-isothermal conditions and an oxidative atmosphere to study the thermal decomposition characteristics. Then, the first order Coast and Redfern method was used to determined the kinetic parameters of bio-pellets combustion. It was found that the ash content of bio-pellets were tended to decreased, while the volatile matter and fixed carbon were tended to increase with the addition of molasses. Nevertheless, the density, the axial compressive strength and the calorific values of bindered bio-pellets were decreased due to the higher amounts of water in the raw mixtures. Thermogravimetric analysis provided an information that the combustions of cow dung bio-pellets took place in three stages of decompositions The bindered bio-pellet began to decompose at lower temperatures than the binderless bio-pellet with a higher weight loss percentage. According to the comprehensive combustion characteristic index (S), the combustion performance of both binderless and bindered bio-pellets were similar. The addition of molasses as a binder tended to reduce the ignition temperature and activation energy for all stages of bio-pellets combustion. Keywords:Bio-pellet, Characterization, Cow Dung, Combustion Kinetics, Molasses
Meningkatkan Potensi Kewirausahaan dan Inovasi Produk di SMK N 1 Mojosongo Gustiana, Himmah Sekar Eka Ayu; Mahmudi, Ayub; Jayani, Syahrul Aji; Yudha, Cornelius Satria; Shohih, Esa Nur; Putro, Firman Asto; Fuady, Muhammad Iqbal Al; Paryanto, Paryanto; Suci, Windhu Griyasti
Equilibrium Journal of Chemical Engineering Vol 6, No 2 (2022): Volume 6, No 2 December 2022
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v6i2.65939

Abstract

ABSTRAK. Kewirausahaan merupakan salah satu tuntutan kompetensi lulusan siswa di SMK Negeri 1 Mojosongo. Kompetensi tersebut menjadi salah satu indikator kualitas sumber daya manusia lulusan SMK. Tim Manajemen sekolah selalu berusaha meningkatkan kualitas sumber daya siswa dan tenaga pengajarnya. Salah satu terobosan yang dilakukan adalah bekerjasama dengan Prodi D3 Teknik Kimia Universitas Sebelas Maret untuk meningkatkan wawasan siswanya. Konsep kerjasama ini berupa transfer keilmuan yang dikemas dalam kegiatan pengabdian masyarakat. Kegiatan ini memiliki beberapa tahapan dimulai dari identifikasi masalah mitra yaitu perlunya pemahaman konsep kewirausahaan, business plan, pemodalan dana hibah, konsep desain dan inovasi produk dan pemasaran usaha. Pada tahap awal kegiatan siswa diminta mengikuti pretest untuk mengetahui tingkat mula pemahaman.  Tahap kedua paparan materi kewirausahaan dan diskusi, tahap ketiga demo sekaligus praktik langsung pembuatan inovasi produk pangan dari buah nipah. Kegiatan diakhiri dengan post test dan testimoni hasil kegiatan. Dari kegiatan yang telah dilakukan, menunjukkan hasil bahwa terdapat peningkatan pemahaman peserta tentang kewirausahaan dan inovasi produk menggunakan teknologi sederhana. Kata kunci: Kewirausahaan, inovasi pangan, nipah, sirupABSTRACT. Entrepreneurship is one of the required competencies for students' graduation at SMK Negeri 1 Mojosongo. Thus, this competency is one of the indicators to determine the quality of graduates from SMK N 1 Mojosongo. The School management has been trying to improve the quality of students and teaching staff. Collaboration between SMK N 1 Mojosongo and Diploma 3 of the Chemical Engineering Study Program of Universitas Sebelas Maret is one of the breakthroughs to increase students' insight. The concept of this collaboration is in the form of knowledge transfer which is packaged in community service activities. This activity begins with identifying the problems experienced by partners such as the need to understand the concept of entrepreneurship, business plans, grant funding, design concepts, product innovation, and business marketing. Before the main agenda begins, students are asked to take a pretest to determine their initial level of understanding. After a presentation on entrepreneurship, the students practice making food product innovations from Nypa fruticans. Finally, the students took the post-test and gave testimonials on the results of the activities. The results of this activity indicate that there is an increase in participants' understanding of entrepreneurship and product innovation with simple technology.Keywords: Food innovation, nypa fruticans, entrepreneurship, syrup
Adsorbsi Zat Warna Alami Buah Mangrove Jenis rhizophora stylosa dan Kulit Kayu Tingi ke dalam Kain dengan Pengunci Tunjung dan Tawas Paryanto, Paryanto; Wijaya, Ayu Mustika; Widodo, Dwi Bagas Ongko; Waluya, Sonia; Utomo, Wahyu Daut
Equilibrium Journal of Chemical Engineering Vol 5, No 1 (2021): Volume 5, No 1 July 2021
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v5i1.50359

Abstract

Abstrak. Industri tekstil di Indonesia berkembang pesat, hal ini ditegaskan oleh data Badan Pusat Statistik (BPS) yang menunjukkan produksi industri sandang mengalami pertumbuhan yang signifikan sebesar 15,29 persen pada tahun 2019. Penggunaan pewarna tekstil akan menimbulkan limbah. masalah di lingkungan. Sehingga diperlukan pewarna alami sebagai alternatif yang lebih aman dan ramah lingkungan. Tujuan dari penelitian ini adalah untuk memperoleh analisis data dan menentukan nilai kesetimbangan adsorpsi larutan pewarna alami kulit batang pohon bakau Rhizophora stylosa dan tingi dengan variasi jumlah pencelupan pada kain primisima dengan membandingkannya dengan persamaan Langmuir dan Freundlich serta mengetahui peran tunjung dan tawas dalam proses pengikatan zat warna menjadi kain. Penelitian ini menggunakan metode ekstraksi padat-cair kemudian diuji dengan spektrofotometri untuk mendapatkan data konsentrasi awal. Selanjutnya, tuangkan zat warna yang telah diuji kandungan taninnya ke dalam gelas ukur dan masukkan kain sebagai media perpindahan massa tanin dari cair ke padat. Sampel diambil untuk setiap pencelupan dan diuji kandungan tanin secara spektrofotometri dan diperoleh nilai Ca. pengujian pola isoterm. Uji adsorpsi proses penyerapan tanin pada zat warna alam oleh kain dilakukan dengan menghitung menggunakan persamaan Langmuir dan Freundlich. Selanjutnya kain yang telah diwarnai difiksasi dengan tunjung dan tawas. Penentuan kapasitas adsorpsi kain yang paling sesuai terhadap pewarna alam Rhizopora stylosa dan kulit kayu tingi adalah dengan menggunakan persamaan adsorpsi Freundlich dibandingkan dengan persamaan Langmuir. Hal ini dibuktikan dengan nilai error persamaan Freundlich lebih kecil dari pada persamaan Langmuir dengan menunjukkan nilai R2 yang mendekati angka 1. Nilai konstanta persamaan Langmuir kulit tingi selama tiga kali pencelupan diperoleh nilai b sebesar 0,2338 mg/gr dan nilai k adalah 0,00517 L/gr. Untuk lima kali pencelupan diperoleh nilai b sebesar 0,10817 mg/gr dan nilai k sebesar 0,00421 L/gr. Untuk tujuh kali pencelupan diperoleh nilai b sebesar 0,0670 mg/gr dan nilai k sebesar 0,003899 L/gr. Sedangkan pada persamaan Freundlich untuk kulit kayu tingi untuk tiga kali pencelupan diperoleh nilai n sebesar 0,4312 mg/g dan nilai k sebesar 0,36374 x 103 L/gr. Untuk lima kali pencelupan nilai n sebesar 0,30114 mg/g dan nilai k sebesar 0,99586 x 105 L/g. Untuk tujuh kali pencelupan nilai n sebesar 0.2424 mg/g dan nilai k sebesar 0.9354 x 107 L/g. Nilai konstanta persamaan Langmuir Rhizopora stylosa untuk tiga kali pencelupan, nilai b 0,15635 mg/gr dan nilai k 0,005224 L/gr. Untuk lima kali pencelupan diperoleh nilai b sebesar 0,08141 mg/gr dan nilai k sebesar 0,004415 L/gr. Untuk ketujuh pencelupan diperoleh nilai b sebesar 0,04909 mg/gr dan nilai k sebesar 0,00408 L/gr. Sedangkan pada persamaan Freundlich untuk Rhizopora stylosa untuk tiga kali pencelupan diperoleh nilai n sebesar 0,3862 mg/g dan nilai k sebesar 0,1090 x 104 L/g. Untuk lima kali pencelupan nilai n sebesar 0,2733 mg/g dan nilai k sebesar 0,4355 x 106 L/g. Untuk tujuh kali pencelupan diperoleh nilai n sebesar 0,2126 mg/g dan nilai k sebesar 0,1545 x 109 L/g. Dapat disimpulkan bahwa semakin banyak pewarnaan maka daya serap kain terhadap tanin semakin kecil. Perubahan warna fiksasi kain pada pencelupan ekstrak Rhizopora stylosa dengan tunjung adalah dari coklat menjadi coklat keabu-abuan, sedangkan dengan tawas dari coklat menjadi coklat tua. Perubahan warna fiksasi kain pada pencelupan ekstrak kulit tingi dengan tawas adalah dari coklat menjadi hitam, sedangkan dengan tawas dari coklat menjadi coklat tua. Abstract. The textile industry in Indonesia is growing rapidly, this is confirmed by data from the Badan Pusat Statistik (BPS) which shows that the production of the clothing industry has experienced a significant growth of 15.29 percent in 2019. The use of textile dyes will cause waste problems in the environment. So we need natural dyes as a safer and environmentally friendly alternative. The purpose of this study was to obtain data analysis and to determine the adsorption equilibrium value of the natural dye solution of mangrove Rhizophora stylosa and tingi bark with variations in the amount of dyeing in primisima cloth by comparing it with the Langmuir and Freundlich equations and knowing the role of tunjung and alum in the process of fixing dyes into cloth. This study used a solid-liquid extraction method and then tested by spectrophotometry to obtain initial concentration data. Next, pour the dye that has been tested for its tannin content into a measuring cup and insert the cloth as a medium for mass transfer of tannins from liquid to solid. Samples were taken for each dyeing and tested for tannin content by spectrophotometry and the Ca value was obtained. Isotherm pattern testing. The adsorption test for the absorption process of tannins in natural dyes by cloth was carried out by calculating using the Langmuir and Freundlich equation. Furthermore, the cloth that has been dyed is fixed by tunjung and alum.The most suitable determination of the adsorption capacity of the cloth against natural dyes Rhizopora stylosa and tingi bark is by using the Freundlich adsorption equation compared to the Langmuir equation. This is evidenced by the error value of the Freundlich equation is smaller than the Langmuir equation by showing the value of R2 which is close to number 1. The constant value of the Langmuir equation tingi bark for three times of dyeing obtained the b value is 0.2338 mg/gr and the k value is 0.00517 L/gr. For five of dyeing, the b value is 0.10817 mg/gr and the k value is 0.00421 L/gr. For the seven times of dyeing, the b value is 0.0670 mg/gr and the k value is 0.003899 L/gr. Whereas in the Freundlich equation for tingi bark for three times of dyeing, the n value is 0.4312 mg/g and the k value is 0.36374 x 103 L/gr. For five of dyeing, the n value is 0.30114 mg/g and the k value is 0.99586 x 105 L/g. For seven of dyeing, the n value is 0.2424 mg/g and the k value is 0.9354 x 107 L/g. The constant value of the Langmuir Rhizopora stylosa equation for three times of dyeing, the b value is 0.15635 mg / gr and the k value is 0.005224 L/gr. For five of dyeing, the b value is 0.08141 mg/gr and the k value is 0.004415 L/gr. For the seven of dyeing, the b value is 0.04909 mg/gr and the k value is 0.00408 L/gr. Whereas in the Freundlich equation for  Rhizopora stylosa for three times of dyeing, the n value is 0.3862 mg/g and the k value is 0.1090 x 104 L/g. For five of dyeing, the n value is 0.2733 mg/g and the k value is 0.4355 x 106 L/g. For seven of dyeing, the n value is 0.2126 mg/g and the k value is 0.1545 x 109 L/g. It can be concluded that the more dyeing, the less the absorbency of the cloth on tannins. The color change of fixation the cloth in the dyeing of Rhizopora stylosa extract with tunjung is from brown to grayish brown, while with alum from brown to dark brown. The color change of fixation the cloth in the dyeing of tingi bark extract with alum is from brown to black, while with alum from brown to dark brown.
Co-Authors Aan Ardian Aan Erlansari Abimanyu, Candra Ade Dwi Utama Adrian Nur Agus Purwanto AGUS PURWANTO Agus Widyianto Agustinus Dimas Krisna Adi Nugroho Ajeng L. Puspitaningrum Alamsyah, Raihan Alim Harun Pamungkas Alqarni, Wais Aminatun, Tien Anang Rosihan Andhi Nur Rahmadi, Andhi Nur Andrian Riyadi Andrian Wisnu Dewangga Angga Dwi Wibowo Ardianto, Aan Ari Diana Susanti Ari Diana Susanti, Ari Diana Aries Susanty Arrozi, Wahyu Asnawi Asnawi Asri Widowati Azalia Kartika Suri, Azalia Kartika Azhari, Fadlan Azizah, Rifo N Baskoro, Catur Hilman Adritya Haryo Bhakti Baskoro, Sefrian Imam Berkah Fajar TK Busairi, Achmad Cahyadi, Muhammad Cahyani, Yulinar Pramesti Cornelius Satria Yudha Deni Kurniawan, Deni Desy Sulistyowati, Desy Dewi, Kristina Ratna Dian Retnaningdyah, Dian Dwi Budi Santoso Dyah Kusuma Dewi Eko Riswanto, Eko Endang Kwartiningsih Endang Mastuti Endang Widi Winarni Endina Putri Purwandari Esa Nur Shohih F, Nur Kholis Fadilah Fadilah, Fadilah Fadillah, Nuzulul Fathika, Rahma N Fauzia Rahmadita Febrianto Amri Ristadi Febrianto Amri Ristadi Felani, Muhamad Iqbal Fendri Ferdian Firdausy, Farah Mutia Firstandika, Leader Fuady, Muhammad Iqbal Al Gito Sugiyanto Guterres, Natalino Fonseca D.S. Hanifa, Vina Hariana, Hariana Haryanto, Rifqi Hasnan Bachtiar Hermiyanto Hermiyanto Heru Mugiarso Himmah Sekar Eka Ayu Gustiana Ilham Roy Saputro, Ilham Roy Indrawan, Harry Intan Kusumawati Jati, Andika Seto Kuncoro Jayani, Syahrul Aji Joga Dharma Setiawan Joko Waluyo Khasanah, Isrofiah Laela Lega, Michael Lely Hendarti Lutfiani, Rachmi Azizah M. Yogi Riyantama Isjoni Maghfi, Risya Ulayyar Mahmudi, Ayub Mamok Suprapto Mansuri, Aly Syariati Margono Margono Maryova, Frieska Maulana, Andra Mochammad Ariyanto Mohammad Samsul Bakhri Mohammad Tauviqirrahman Monot Wicaksono Muhammad Fadilah Arsyad Muhammad Fardan Ibnu Aji Munadi Munadi Munyensanga, Patrick Muslim, Zulkifli Alif Nur Cahyo Nurcahyanti, Desy Nurwijayanti Orlanda Arya Hidayat Penny Rahmawaty Pranolo, Sunu Herwi Pranoto, Ibnu Singgih Pratama, Rakha Rahmadani Prismantoko, Adi Putra, Raka Mancini Putra, Yusran Panca Putrikatama, Bintang Timur Putro, Firman Asto Putro, Wibisono Handoko Qatrunada, I. R. Rachmadhani, Shafira Rachmi Azizah Lutfiani Rafindra Trisna Rahmadi, Kristian Jati Rahmanta, Mujammil Asdhiyoga Raka Mancini Putra Ramadhan, Rifky Daffa Ratih Pujiastuti Ratri H. Hapsari Reto Ika Sundari, Reto Ika Ridwan Afandi Rivaldo Zamara Roni Permana Saputra Rossari, Meydiana RR Laksistya Rania Nur Prita Maira Rusnaldy Rusnaldy Rusnaldy Rusnaldy Sachrul Iswahyudi Saputra, Calvin Darma Saputra, Nandika Aji Sarfilianty Anggiani, Sarfilianty Sari Ayu Wulandari Setiawan, Muhammad Farouk SETYAWAN, YOGA Setyawati, Rosana Budi Sigit Mujiarto Simalango, Antonius Simon Dicky Surya Sanjaya Soleh, Mochamad Suci, Windhu Griyasti Sudiyatno Sudiyatno Sugeng Riyanto Sukis, Muhamad Sulardjaka Sulardjaka Sumar Hadi Suryo Sunarso . Sunarso Sunarso Sunarta Supriyo Supriyo Surya, Rizqi Diaz Susilo Adi Widyanto Sutrisno AB, Joko Syamsul Mu’arif Subekhi Toriq, Sulthan Totok Apriyanto, Totok Triasdian, Yayak Trismianto, Devout Prakoso Utomo, Wahyu Daut Waluya, Sonia Wibowo, Angga Dwi Widodo, Dwi Bagas Ongko Wigati, Sofiana Mukti Wijaya, Ayu Mustika Wijayanto, Ristyan Willy Arafah WINARTO Wusana A. Wibowo Wusana Agung Wibowo, Wusana Agung Xander Salahudin Yoga Guntur Sampurno Yudha, Cornelius Satria