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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 Civil Engineering Journal Indonesia Journal of Halal Jurnal Rekayasa Proses Zawiyah: Jurnal Pemikiran Islam 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 Dinamika Kerajinan dan Batik: Majalah Ilmiah
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Pelatihan CAD/CAM – CNC untuk Meningkatkan Kompetensi Pemrograman CNC Guru SMK: CAD/CAM – CNC Training to Improve CNC Programming Competence of Vocational High School Teachers Paryanto, Paryanto; Ristadi, Febrianto Amri; Riyadi, Andrian; Jati, Andika Seto Kuncoro
Jurnal Pengabdian dan Pengembangan Masyarakat Indonesia Vol. 4 No. 2 (2025)
Publisher : Media Publikasi Cendekia Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56303/jppmi.v4i2.872

Abstract

Kegiatan pengabdian ini bertujuan untuk meningkatkan kompetensi pemrograman CNC guru SMK melalui pelatihan CAD/CAM yang terkini, guna menjembatani kesenjangan pengetahuan antara pengajar dan perkembangan teknologi industri manufaktur. Pelatihan yang dilaksanakan di SMK Muhammadiyah 3 Yogyakarta ini menggunakan metode ceramah, praktikum, dan evaluasi proyek. Dalam pelatihan selama empat hari, peserta mempelajari perangkat lunak CAD/CAM serta teknik pemrograman CNC yang diaplikasikan pada model 3D dan simulasi jalur potong alat. Hasil pelatihan menunjukkan peningkatan signifikan dalam pemahaman dan keterampilan guru, di mana 85% peserta mampu menjelaskan konsep dasar pemrograman CNC, 70% berhasil membuat model 3D yang akurat, dan 75% dapat mensimulasikan jalur alat potong dengan benar. Umpan balik menunjukkan bahwa 90% peserta menyatakan pelatihan ini bermanfaat dan relevan dengan kebutuhan pengajaran. Hasil ini mengindikasikan bahwa pelatihan berkelanjutan dengan teknologi terkini berpotensi meningkatkan kualitas pendidikan vokasi serta daya saing lulusan SMK di pasar kerja
PENINGKATAN PRODUKTIVITAS USAHA KERAJINAN TEMPURUNG KELAPA MELALUI KONSEP PROSES PRODUKSI TERPADU Paryanto, Paryanto; Rahmawaty, Penny; Ardian, Aan
INOTEKS: Jurnal Inovasi Ilmu Pengetahuan,Teknologi, dan Seni Vol 17, No 1 (2013)
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (147.606 KB) | DOI: 10.21831/ino.v17i1.3088

Abstract

The event was held with the aim to improve the productivity of coconut shell craftsmen (bathok) in the village of Santan and Ngimbang Bantul, using the concept ofIntegrated Production Process. These objectives are translated into specific objectives, namely procurement of appropriate technology, improve the ability of craftsmen in business management, and improve the ability of craftsmen in the use of the internet as a marketing medium. The concept of integrated production processes are translated into three activities: procurement of appropriate technology, the Internet as a marketing medium for training, and business management training.This activity is carried out by using lectures, discussions, demonstrations, handson and observation. Lecture method is used in the process of delivering training materials. Besides, it is also used in providing motivation to craftsmen to always defend and promote the spirit of trying as a major capital in increasing productivity of the craftsmen. Discussion method is used as a medium ofcommunication with the training to take place resulting in a two-way communication between the presenters and artisans. The method used in the demonstration of an example in every training, thus providing facilities to the artisans in understanding the material presented. The method used to apply a hands-on materials that have been obtained, of course, with the guidance of presenters. Observation methods performed to observe the craftsmen skills both during the training and after the training. Observations after the training aimed to determine the impact of the training that has been conducted related to the progress of the productivity of the craftsmen. The results of this activity are: (1) has been assigned some appropriate technology equipment that is 2 units of portable drilling machine, 1 unit sanding machine and 1 unit compressor, (2) business management training can improve the ability of craftsmen in the fields of management, which is 70% craftsmen have acquired in the management of the business, (3) training using the Internet can enhance the ability of artisans to utilize the internet as a marketing medium, which is 40% craftsmen have the ability to use the Internet, (4) based on the results of the analysis of increased productivity, increased artisans revenues of approximately 30%Keywords: concept of integrated production processes, coconut shellcraftsmen
Application of Environmentally Friendly Natural Dyes from Raja Banana Stems (Musa sapientum), Kepok Banana (Musa acuminata) and Thin Skin Banana (Musa acuminata red dacca) on Batik Fabrics Paryanto, Paryanto; Pranolo, Sunu Herwi; Fathika, Rahma N; Azizah, Rifo N; Wibowo, Angga Dwi
Dinamika Kerajinan dan Batik: Majalah Ilmiah Vol. 38 No. 2 (2021): DINAMIKA KERAJINAN DAN BATIK : MAJALAH ILMIAH
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Industri Kerajinan dan Batik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22322/dkb.v38i2.6263

Abstract

Banana trees that are used as producers of natural dyes are plantains, thin skin bananas, and kapok bananas. The purpose of this study was to apply natural coloring agents from various types of banana stems such as Raja Banana, Kepok Banana,and Thin Skin Banana with various natural color pigments. Making natural dyes with stems banana and water solvent in a ratio of 1: 5. Color locking on a fabric with several fixators. Fixers used are alum (Al2 (SO4) 3), tunjung (FeSO4) and lime (CaCO3). Fabrics that have optimal fastness to washing with Gray Scale are fabrics with alum fixers and lime with grades 4-5 (Good). Fabrics that have color fastness to washing (Staining Scale) which are fabrics with alum fixers and chalk with a value of 5 (Very Good). Fabrics that have resistance to dry and wet rubbing are fabrics with alum fixers and lime with grades 4-5 (Good). Dyes on the plantain stems are sharper compared to the banana stems and thin skin banana stems, with reflectance values (R%) of 74.29.
Characterization of Bed Agglomeration in Circulating Fluidized Bed Boilers: Influence of Coal Quality and Bed Material Interactions Cahyo, Nur; Triasdian, Yayak; Busairi, Achmad; Rahmanta, Mujammil Asdhiyoga; Paryanto, Paryanto; Fajar TK, Berkah
ROTASI Vol 27, No 3 (2025): VOLUME 27, NOMOR 3, OKTOBER 2025
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.27.3.22-29

Abstract

The utilization of coal in generating energy across the world is extremely popular due to its low cost. Otherwise, coal quality plays a significant role in other potential problems. Such an interaction between bed material and coal properties could lead to the formation of bed agglomeration, which melts in the CFB boiler of a power plant. The result shows that the majority of agglomeration samples were granular and dominated by round shapes, as observed visually. The EDX analysis shows that the three biggest elements in the agglomeration sample are oxygen, silica, and calcium. Meanwhile, XRD analysis reveals that the most reactive products were muscovite, albite, and dolomite compounds. They were composed of natrium in the range of 1.95–2.84%, silicon in the range of 20.2–21.16%, aluminium in the range of 13.05–15.46%, calcium in the range of 1.05–3.11%, and others. Therefore, several potential alternatives might be the best way to reduce the risk of agglomeration in a boiler. Including using additives like china clay and soils, especially those containing kaolin, and utilizing alternate bed materials. Another promising option to prevent this problem is to reduce the combustion temperature and replace bed material periodically.
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
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 Abimanyu, Candra Ade Dwi Utama Adrian Nur Agus Purwanto AGUS PURWANTO Agus Widyianto Agustinus Dimas Krisna Adi Nugroho Ajeng L. Puspitaningrum 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 Azizah, Rifo N Baskoro, Catur Hilman Adritya Haryo Bhakti Berkah Fajar TK Busairi, Achmad Cahyani, Yulinar Pramesti Cornelius Satria Yudha Desy Sulistyowati, Desy Dewi, Kristina Ratna Dian Retnaningdyah, Dian Dwi Budi Santoso Dyah Kusuma Dewi Eko Riswanto, Eko Endang Kwartiningsih Endang Mastuti Esa Nur Shohih F, Nur Kholis 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 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 Jati, Andika Seto Kuncoro Jayani, Syahrul Aji Joga Dharma Setiawan Joko Waluyo Khasanah, Isrofiah Laela Lega, Michael Lely Hendarti Lutfiani, Rachmi Azizah Maghfi, Risya Ulayyar Mahmudi, Ayub Mamok Suprapto Mansuri, Aly Syariati Margono Margono Maryova, Frieska Mochammad Ariyanto Mohammad Samsul Bakhri 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 Putrikatama, Bintang Timur Putro, Firman Asto Qatrunada, I. R. Rachmadhani, Shafira Rachmi Azizah Lutfiani Rafindra Trisna Rahmadi, Kristian Jati Rahmanta, Mujammil Asdhiyoga Raka Mancini Putra Ramadhan, Rifky Daffa Ratri H. Hapsari Reto Ika Sundari, Reto Ika 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 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 Triasdian, Yayak Trismianto, Devout Prakoso Utomo, Wahyu Daut Waluya, Sonia Wibowo, Angga Dwi Widodo, Dwi Bagas Ongko Wigati, Sofiana Mukti Wijaya, Ayu Mustika Willy Arafah WINARTO Wusana A. Wibowo Wusana Agung Wibowo, Wusana Agung Yoga Guntur Sampurno Yudha, Cornelius Satria