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All Journal Alchemy : Journal of Chemistry Jurnal Teknik Kimia Jurnal Fisika Unand JURNAL INTEGRASI PROSES Journal of Natural Sciences and Mathematics Research SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Inovasi Teknik Kimia ASEAN Journal of Chemical Engineering G-Tech : Jurnal Teknologi Terapan Nusantara Science and Technology Proceedings International Journal of Eco-Innovation in Science and Engineering (IJEISE) Advance Sustainable Science, Engineering and Technology (ASSET) DedikasiMU: Journal of Community Service Jurnal Pengbdian Teknik Mesin COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat Jurnal Pengabdian Pelitabangsa Dharma Pengabdian Perguruan Tinggi (DEPATI) International Journal of Science and Environment Journal Serambi Engineering (JSE) Environation (Environmental Engineering Journal of Community Dedication)
Kindriari Nurma Wahyusi
Universitas Pembangunan Nasional Veteran Jawa Timur
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The Effect of Resin and NH4OH Addition in The Making of Ammonium Silica Fertilizer from Geothermal Sludge Wahyusi, Kindriari Nurma; Nandini, Atika; Utami, Lucky Indrati; Siswanto; Utami, Isni; Mardhiyah, Nurul; Nofita, Dian
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 2 No. 1 (2021): IJEISE
Publisher : UPN Veteran Jatim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ijeise.v2i01.29

Abstract

Geothermal sludge is a waste product from geothermal where it contains SiO2 which can be used as fertilizer. In this study, the making of silica ammonium fertilizer was carried out by taking salicy acid from geothermal sludge by extracting and adding resin which was then modified with NH4OH addition. Extraction was done using 1000 ml of KOH 1 N to dissolve 60 grams of Geothermal Sludge. Resins are added with variations in resin weight, namely, 5, 10, 20, 30, and 40 grams. NH4OH was added with variations in concentrations namely 3, 6, 9, 12 and 15% with a ratio of filtrate and NH4OH solution of 1: 1. The resulting ammonium silica inorganic liquid fertilizer products were analyzed for free silica and ammonia levels. The results of this study indicate that the levels of free silica and ammonia are influenced by the weight of the resin used and the concentration of ammonium hydroxide mixed. From the results of the research, it was found that inorganic silica liquid fertilizer with the highest SiO2 content in ammonium silica liquid fertilizer occurred when adding 20 grams of resin with the addition of NH4OH with a concentration of 15% which was 1,831.87 mg / L while the highest NH3 content in fertilizer liquid ammonium silica occurs when adding 40 grams of resin with the addition of NH4OH with a concentration of 15% which is equal to 252,312.80 mg / L.
Kinetic models of candle shell alkaline hydrolysis in obtaining oxalic acid Siswanto; Wahyusi, Kindriari Nurma; Panjaitan, Renova; Nurmawati, Ardika; Najakha, Ellen Oktavia Hanim
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 3 No. 1 (2022): IJEISE
Publisher : UPN Veteran Jatim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ijeise.v3i01.41

Abstract

The kinetic reaction of alkaline hydrolysis of candlenut shells to produce oxalic acid was investigated. It was performed for the non-catalyzed solid-liquid heterogeneous reaction in a range time of 30 to 90 minutes and temperature of 60oC to 90oC. This study showed that the reaction fitted the pseudo-first-order model, confirmed from the determinant coefficient value of 0.9182 to 0.9751, and the kinetic constant, evaluated using Arrhenius' law, was k= 0.034751 e^(-140.23⁄T). The rate control mechanism based on the shrinking core model was diffusion control, validated from determinant coefficient near one, from 0.9246 to 0.9766.
The Effect of Velocity Gradient and Camp Number on Solids Removal using Bio-Coagulant from Corbula faba Hinds Shells Nurmawati, Ardika; Wahyusi, Kindriari Nurma; Dewati, Retno; Hilmy, Jauhar
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 3 No. 2 (2022): IJEISE
Publisher : UPN Veteran Jatim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ijeise.v3i02.52

Abstract

process in water helps reduce solid content in water. The coagulant destabilizes water pollutants and helps flocs formation with the coagulation process. This paper studies the performance of chitosan bio-coagulant produced from Corbula faba Hinds shells. The velocity gradient and the Camp number of solids removal were also evaluated. The velocity and period of rapid mixing varied from 110 to 150 rpm, and the velocity gradient (G) was 181.2 to 288.5 s-1. The mixing period also ranged from 1 to 5 minutes. The highest TSS and TDS removal resulted in 140 rpm or 260.2 s-1 and 4 minutes of mixing. The residual TSS and TDS decreased with the increase of Camp Number until reaching a point and increased again afterward.
Synthesis of Hydrosiapatite from Muscle Shell Waste Using The Precipitation Method Puspitawati, Ika Nawang; Tauhid, Aziz Hafizh; M.N.K, Abdullah Tsani; Utami, Lucky Indrati; Wahyusi, Kindriari Nurma
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 3 No. 2 (2022): IJEISE
Publisher : UPN Veteran Jatim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ijeise.v3i02.72

Abstract

Hydroxyapatite is a calcium phosphate compound that is the main inorganic component of bones and teeth. Hydroxyapatite has a main role in the medical world because of its identical chemical properties and structure to human bone. Kupang shells have a high CaCO3 content of 95-99% by weight. So this concurrence, the mussel shells are to be used as good as an ingredient for making Hydroxyapatite. The variables used in this research are Temperature of the Furnace and Phosphoric Acid Concentration, which were 700ºC, 750 ºC, 800 ºC, 850 ºC, 900 ºC and Phosphate Acid Concentrations 0.4M, 0.6M, 0.8M, 1M, and 1.2M. The product results were tested with XRD analysis to determine the crystal structure contained in the product and the level of Hydroxyapatite in the product. The best research results in this study at a temperature of 900ºC at a concentration of 1.2M phosphoric acid with a Hydroxyapatite content of 100% with lattice parameters an (Aº)=b (Aº) = 9..422, c (Aº)=6.8835, and gamma = 120º.
HIDROLISIS ASAM α-SELULOSA PADA IMPERATA CYLINDRICA L DAN KARAKTERISASI MIKROKRISTALIN SELULOSA Sutejo, Andree Budihardjo; Hasugian, Firman Hasiholan; Utami, Lucky Indrati; Wahyusi, Kindriari Nurma
Jurnal Teknik Kimia Vol 17, No 2 (2023): Jurnal Teknik Kimia
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v17i2.3787

Abstract

Indonesia merupakan negara yang memiliki banyak hutan tropis, total luas kawasan hutan di seluruh Indonesia adalah 120 juta hektar. Pada lahan tersebut tentunya tumbuh subur gulma. Alang-alang (Imperata cylindrica L.) merupakan gulma yang dapat tumbuh di berbagai tanah hutan di Indonesia, kandungannya terdiri dari α-selulosa sebesar 40,22%, kadar holoselulosa sebesar 59,62% dan kadar lignin 31,29%. Penelitian ini dilakukan untuk mencari pengaruh konsentrasi dari HCl dan waktu pemasakan terhadap pembuatan mikrokristalin selulosa. Mencari kondisi optimal terhadap karakteristik mikrokristalin selulosa yang sesuai dengan ketentuan SNI yang berlaku. Proses pembuatan mikrokristalin selulosa menggunakan beberapa metode, yaitu pre-hidrolisis, delignifikasi, bleaching, dan hidrolisis menggunakan HCl. Dari penelitian yang telah dilakukan, diperoleh hasil mikrokristalin dengan rendemen tertinggi diperoleh pada sampel dengan hidrolisis pada konsentrasi asam klorida sebesar 1,5N, dengan waktu pemanasan 30 menit, dan rendemen mikrokristalin sebesar 74,11%, warna putih, dan ber-Ph netral. Dari hasil tersebut, maka dapat disimpulkan bahwa mikrokristalin yang dihidrolisis dengan menggunakan asam klorida sebesar 1,5N sudah sesuai dengan SNI yang berlaku. Dengan indikasi tidak dapat larut dalam air, kadar alcohol sebesar 95%, maupun asam lemah. Susut pengeringan sebesar 0,0871%. Ukuran rata-rata mikrokristalin yang didapatkan saat penelitian yaitu sebesar 26,62 µm. mikrokristalin merupakan selulosa dengan ukuran berkisar antara 2,94 hingga 117,6 µm. DOI : https://doi.org/10.33005/jurnal_tekkim.v17i2.3787
SINTESIS SILIKA XEROGEL DARI SABUT KELAPA DENGAN METODE SOL-GEL Lestari, Yuniar Dwi; Rahayuningtyas, Mia Tri; Utami, Lucky Indrati; Wahyusi, Kindriari Nurma
Jurnal Teknik Kimia Vol 17, No 2 (2023): Jurnal Teknik Kimia
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v17i2.3785

Abstract

Sabut kelapa merupakan bagian dari tanaman kelapa yang diketahui memiliki kandungan silika sekitar 69% yang dapat dimanfaatkan sebagai bahan baku pembuatan silika xerogel. Silika dengan rumus kimia SiO2 banyak digunakan di industri maupun di kehidupan sehari – hari. Penelitian ini bertujuan untuk menentukan konsentrasi pelarut dan waktu aging terbaik dalam sintesis silika xerogel dari sabut kelapa dengan metode sol-gel. Dimulai dengan mengabukan sabut kelapa dalam furnace pada suhu 600oC selama 2 jam. Kemudian untuk membuat sol, abu sabut kelapa diekstraksi menggunakan pelarut NaOH dengan variasi konsentrasi 1,5; 2; 2,5; 3; 3,5 N pada suhu 100oC selama 1 jam. Sol larutan natrium silikat diasidifikasi menggunakan HCl 1N hingga terbentuk gel pada pH 7. Gel yang terbentuk di-aging selama variasi waktu 12; 15; 18; 21; 24 jam, lalu dikeringkan hingga membentuk xerogel. Hasil sintesis berupa silika xerogel berwarna putih dan dikarakterisasi menggunakan FT-IR, XRD dan SAA. Hasil analisa FTIR menunjukkan silika xerogel mengandung gugus fungsi silanol dan siloksan dan analisa XRD menunjukkan silika memiliki struktur amorf. Kondisi terbaik yang didapatkan untuk sintesis silika yaitu pada waktu aging 18 jam yang menghasilkan luas permukaan paling besar sebesar 414,046 cm-1 , dan pada konsenentrasi pelarut NaOH 3,5N dengan yield terbesar sebesar 90,39%. DOI : https://doi.org/10.33005/jurnal_tekkim.v17i2.3785
Bioethanol Generation Through the Fermentation Process of Pineapple and Black Grape Utilizing Saccharomyces cerevisiae and Saccharomyces bayanus Ika Nawang Puspitawati; Sintha Soraya Santi; Kindriari Nurma Wahyusi; Sani
Nusantara Science and Technology Proceedings 4th International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2023.3609

Abstract

Bioethanol is an alcohol molecule that is derived through the process of fermentation using microorganisms. Fermentation is a biological process in which microbes metabolize fermentable sugars as a source of nourishment, resulting in the production of ethyl alcohol and various other byproducts. These microbes commonly metabolize 6-carbon carbohydrates, with glucose being one of the most prevalent examples. Hence, biomass materials rich in glucose or glucose precursors are the most readily convertible to bioethanol. The examination of bioethanols employing Saccharomyces bayanus demonstrated notable disparities in the obtained alcohol concentration. The utilization of Saccharomyces bayanus yeast, in the absence of sugar supplementation, for the conversion of grape into bioethanol, yielded a modest alcohol concentration of merely 14%. In the context of bioethanol production, pineapple was utilized as a substrate, wherein 4 grams of Saccharomyces bayanus yeast and an additional 70 grams of sugar were introduced as a nutritional supply to support yeast growth and metabolism. The present fermentation procedure resulted in an alcohol concentration of around 21%.
Penelitian Pupuk Biofertilizer Berbahan dasar Kulit Buah Nanas dan Abu Rumput Gajah dengan pengaruh Berat bahan dan Durasi fermentasi Dian Pratiwi Tejo Kusumo; Dimas Arnanda; Kindriari Nurma Wahyusi; Dyah Suci Perwitasari; Retno Dewati
G-Tech: Jurnal Teknologi Terapan Vol 9 No 1 (2025): G-Tech, Vol. 9 No. 1 January 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v9i1.6013

Abstract

This research develops a biofertilizer production method using pineapple peel waste and elephant grass ash as raw materials. Pineapple peel contains nutrients that can improve soil fertility, while elephant grass, commonly used as livestock feed, has high silica content beneficial to the soil when used as fertilizer. The research aimed to produce a biofertilizer and examine the effects of material weight and fermentation duration on the levels of Nitrogen (N), Phosphorus (P), and Potassium (K), assessing whether the results meet Indonesian National Standard (SNI) fertilizer requirements. The fermentation process lasted approximately 35 days. The fermented biofertilizer was analyzed using the Micro Kjeldahl method for Nitrogen, UV-Vis Spectrophotometry for Phosphorus, and Atomic Absorption Spectrophotometry (AAS) for Potassium. The results showed the highest concentrations of Nitrogen (2.98%), Phosphorus (2.43%), and Potassium (3.39%) were obtained using 40 grams of elephant grass ash and 35 days of fermentation. The analysis indicated that increasing the amount of elephant grass ash and the fermentation duration resulted in higher N, P, and K levels. These findings align with SNI fertilizer standards, highlighting the potential of using sustainable and easily accessible materials to enhance organic fertilizer production efficiency.
EKSTRAKSI SENYAWA FLAVONOID DARI KULIT ARI BUAH DELIMA (PUNICA GRANATUM L) Nilam Sekar Ningsih; Atika Lailatul Rachmadani; Kindriari Nurma Wahyusi
Jurnal Inovasi Teknik Kimia Vol 10, No 1 (2025)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v10i1.10881

Abstract

Flavonoid adalah salah satu senyawa metabolit sekunder yang penting yang terdapat pada tumbuhan yang merupakan bagian dari turunan 2-phenyl-benzyl- γ-pyrone. Flavonoid memiliki peran penting dalam tumbuhan yaitu memberikan warna, rasa pada biji, bunga dan buah serta dapat digunakan sebagai antimikroba dan perlindungan dari paparan sinar ultra violet matahari. Salah satu sumber flavonoid adalah buah delima. Buah delima mengandung 0,2 – 1% dari berat buah delima yang didalamnya terdapat 30%  terkonsentrasi berada pada bagian kulit. Tujuan dari penelitian ini adalah untuk mengkaji kecepatan pengadukan dan waktu ekstraksi terhadap kandungan flavonoid dari kulit ari buah delima (Punica granatum). Proses ekstraksi flavonoid dapat dilakukan dengan menggunakan pelarut aeston 80% dengan metode pengadukan. Metode tersebut dapat meningkatkan perpindahan massa dari bahan ke dalam pelarut. Dalam proses ekstraksi wakti ekstraksi memiliki pengaruh terhadap efektivitas ekstraksi. Waktu yang terbatas dapat menghasilkan ekstraksi yang kurang optimal, sementara waktu yang berlebihan bisa memengaruhi hasil ekstraksi dengan menyebabkan potensi kerusakan pada sampel.  Diperoleh hasil ekstraksi flavonid terbaik berada pada kecepatan pengadukan sebesar 500 rpm dan pada waktu ekstraksi selama 180 menit dengan kandungan flavonoid yang terekstraksi sebesar 0,7575%
PENGARUH SUHU DAN WAKTU EKSTRAKSI TERHADAP KANDUNGAN SELULOSA PADA LIMBAH KELAPA SAWIT Nandini, Atika; Wahyusi, Kindriari Nurma; Arinton, Aditya; Maulana, M. Rizky
Jurnal Teknik Kimia Vol 19, No 2 (2025)
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v19i2.5074

Abstract

Komponen penyusun utama dari limbah kelapa sawit diantaranya adalah selulosa, hemiselulosa dan lignin. Komponen selulosa dapat dimanfaatkan sebagai bahan baku untuk bahan bakar cair (bioethanol, biediesel, dll) maupun sebagai bahan baku untuk pembuatan nanokomposit. Proses pemisahan atau ekstraksi dibutuhkan untuk memisahkan komponen selulosa tersebut dari komponen-komponen penyusun lainnya. Parameter waktu, suhu dan konsentrasi pelarut menjadi faktor-faktor penentu proses ini. Tujuan penelitian ini antara lain mempelajari pengaruh waktu dan suhu terhadap proses ekstraksi selulosa dengan menggunakan metode organosol). Tahapan proses pada penenlitian ini diantaranya adalah proses ekstraksi dengan pelarut etanol 96% dan katalis asam sulfat 5%, kemudian dilanjutkan dengan proses bleaching menggunakan hidrogen peroksida dengan konsentrasi 2%, serta tahapan akhir pengeringan hasil ekstrak selulosa dengan oven pada suhu 60℃. Hasil ekstraksi selulosa dianalisa persentase kandungan selulosa, hemiselulosa, dan lignin dengan metode kuantitatif Chesson. Serbuk selulosa juga dianalisa secara organoleptik berdasarkan standar SNI 0444-2009. Kandungan selulosa tertinggi dengan kadar sebesar 58,71% didapatkan pada kondis suhu 170℃ serta waktu ekstraksi selama 150 menit, sehingga kondisi tersebut ditetapkan sebagai kondisi optimum. Hasil analisa organoleptik menunjukan bahwa serbuk selulosa ini telah sesuai dengan standar SNI 0444 2009.
Co-Authors Abdul Rachman Wirayudha Abdullah Tsani M.N.K Achmad Aris Syahrul Ramadhan Achmad Wahyu Hidayat Adeningrum, Della Arista Adiyani Parahita Lestari Andreas Deardo HP Andriani, Silvia Desy Anggraini, Garin Rifdah Annisa Bella AR Yelvia Sunarti Ardiansyah, Feri Ardika Nurmawati Ardika Nurmawati Ardika Nurmawati, Ardika Arinton, Aditya Astari, Rifky Zulindah Astuti, Dwi Hery Atika Lailatul Rachmadani Atika Lailatul Rachmadani Aziz Hafizh Tauhid Caecilia Pujiastuti Cestyadinda, Ken Ratri Cintaka Natanaelli Cita Risma Anggi Kurnia Rani Dian Nofita Dian Pratiwi Tejo Kusumo Dimas Arnanda Disty Nur Rohmah Djarwatiningsih Pongki Soedjarwo Dyah Suci Perwitasari Ellen Oktavia Hanim Najakha Ernawati, Nana Dyah Siswati Ernawati, Retno Dewati Erwan Adi Saputro Euis Nurul Hidayah Faisal Amri Sholahuddin Farisah Masturoh Friska Nur Cahyani Hadi Munarko Hadi Munarko Hakam, Muhammad Hasugian, Firman Hasiholan Hidayatullah, Muhammad Rezky Hilmy, Jauhar Ian Yusuf Syaputra Ika Nawang Puspitawati Imroatul Mufidah Indah Fitriana Solichah ISNI UTAMI Jamhari Jamhari Jariyah Jariyah Jariyah Jariyah Jauhar Hilmy Juhariyah Juhariyah Ketut Sumada Kusuma Wardhani Mas’udah Lestari, Yuniar Dwi Lucky Indrati Utami Lucky Indrati Utami M.N.K, Abdullah Tsani Mardhiyah, Nurul Marisa Kusuma Wardani Marsela, Syafitri Maulana, M. Rizky Mei Syella Kurnia Putri Cahyo Moenandar, Siswanto Mohammad Iqbal Mr. Sutiyono Muhammad Hakam Mu’tassim Billah Nailul Hasan Najakha, Ellen Oktavia Hanim Nandini , Atika Nandini, Atika Natanaelli, Cintaka Nikmah, Shokhibatul Nilam Sekar Ningsih Nilam Sekar Ningsih Nindia Noor Indah Nisa', Syadzadhiya Qothrunada Zakiyayasin Nofita, Dian Novel Karaman Novembrianto, Rizka Nur , Shiva Eric Zulfikar Nur Aini Fauziyah Nur Hasanah Nurul Mardhiyah Okik Hendriyanto Cahyonugroho Pardi Sampe Tola Perdana, Dean Pitaloka, Nidya Primasari Cahya Wardhani Purwadi MP. Ir Puspitasari, Kurnia Q Z N, Syadzadhiya Rahayuningtyas, Mia Tri Rahmasari, Shofia Dwi Fitri Ratna Yulistiani Renova Panjaitan Retno dewati Retno Dewati Reva Edra Nugraha Rosa, Aulia S Suprihatin Salma Putri Sekarningrum Sandy Buana Putra Sani Siahaan, Joshua Theo Anugerah Sintha Soraya Santi Siswanto Siswanto Siswanto Siswanto Moenandar Sri Winarti SRIE MULJANI Suprianti, Lilik Susilowati Susilowati Susilowati Susilowati Sutejo, Andree Budihardjo Syaputra, Ian Yusuf Tabitha Intana Tandepadang Tahan Simamora Rizaldi Tahan Simamora Rizaldi Tauhid, Aziz Hafizh Triadira, Aurriel Sekar Ummi Muashomah Utami, Lucky Indrati Utami, Lucky Intrati Utari, Yulanda Kartika Vira Seviani Dewantri Wafiyah, Kholilah Wahyudi Egar Megantoro Saputro Wibisono, Dimas Aryo Bramantyo Wihandhita, Wigig Wilya VP, Robet Yogaswara, Rachmad Ramadhan Yuliyatin Zaen