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Abubakar Tuhuloula
Program Studi Teknik Kimia Fakultas Teknik Universitas Lambung Mangkurat
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Introduksi Pembuatan Bioetanol Berbasis Pati dan Limbah Sagu di Kecamatan Sungai Tabuk, Banjar, Kalimantan Selatan Mursyidin, Dindin H; Susilo, Tanto Budi; Badruzsaufari, Badruzsaufari; Nazari, Yudhi Ahmad; Tuhuloula, Abubakar
Jurnal Pengabdian ILUNG (Inovasi Lahan Basah Unggul) Vol 3, No 4 (2024)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/ilung.v3i4.12289

Abstract

Starch and sago waste are some of the raw materials most prospective to be developed into bioethanol. This activity aims to provide technical assistance in making bioethanol from starch and sago waste for sago farming communities in Sungai Tabuk District, Banjar, South Kalimantan. This activity is carried out in two stages, namely socialization and technical assistance in making bioethanol from starch and sago waste, as well as monitoring and evaluation. Technical socialization and assistance, including internal monitoring and evaluation, have been carried out by the implementation team for target communities. A total of 24 farmers who are members of sago cooperatives in the local area participated in socialization activities and technical assistance in making bioethanol from starch and sago waste. They were very enthusiastic to participate in the activity, as seen from the atmosphere of the discussion and the results of the questionnaire they filled out. In the next activity, several people were accompanied and intensively trained to make bioethanol using tools designed and made by the implementation team. As a result, these activities generally meet the targets and outputs of this activity, namely: (1) Increasing insight of sago farmers in Sungai Tabuk sub-district, South Kalimantan to utilize the starch and sago waste they produce into bioethanol products; (2) The establishment of a pilot project to make bioethanol from starch and sago waste on a small industrial scale managed by sago farming communities; (3) Good cooperation between the implementation team and the local sago farmers, and (4) Bioethanol products produced from starch and sago waste with unknown concentration levels.
Utilization of pineapple stems as biocatalysts in the production of coconut oil using the enzymatic method Fanani, Nurull; Nisa, Nur Ihda Farikhatin; Siswoyo, Deddy Kurniawan Putra; Tuhuloula, Abubakar; Putri, Novy Pralisa
Konversi Vol 14, No 1 (2025): APRIL 2025
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v14i1.22233

Abstract

The utilization of pineapple fruit stems as a by-product of the agricultural process has not been optimally utilized. Meanwhile, pineapple fruit stems have promising economic potential in the field of biotechnology and food processing. This is because pineapple fruit stems contain bromelain enzyme which is quite high compared to ripe fruit flesh, which is around 0.1-0.6%. This bromelain enzyme functions as a biocatalyst in breaking down protein and fat through the hydrolysis reaction of coconut oil. So to find out the catalytic activity of bromelain enzyme in pineapple fruit stems, the process of making coconut oil is carried out enzymatic method through variable addition of doses of 20, 30, 40, and 50% of the weight of coconut milk and enzymatic time duration of 6, 12, 18, and 24 hours. Based on the research results, the best variable is the addition of 30% biocatalyst dose and 24 hours of enzymatic process with the highest yield percentage of 67.9% and product characteristics that have met SNI 7381: 2008. This shows that pineapple fruit stems have the potential as a good biocatalyst in making coconut oil as well as providing added value to pineapple fruit stems in an effort to verify agricultural waste.
Synthesis of Functional Groups on Surface-Modified Activated Carbon for Nitrate Removal from Tofu Home Industry Wastewater Aprilla, Dini; Sari, Indah Permata; Irawan, Chairul; Tuhuloula, Abubakar; Nata, Iryanti Fatyasari; Ariani, Ariani; Isnaini, Muhammad Dody
Jurnal Teknik Kimia dan Lingkungan Vol. 10 No. 1 (2026): April 2026
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jtkl.v10i1.7872

Abstract

This research successfully converted spent coffee grounds (SCG) into powdered activated carbon (AC) through carbonization at 400°C. The surface functional groups of this carbon were subsequently modified using hydrochloric acid as an activating agent to enhance its adsorption properties. The purpose of this research was to evaluate the performance of this modified activated carbon (MAC) as an adsorbent for reducing nitrate content in tofu industry wastewater, which is characterized by high concentrations of nitrate ions. The MAC was characterized using SEM and FTIR analysis to determine its surface morphology and functional groups, which are critical for adsorption process of capturing atoms, ions, and molecules on a materials surface. The batch adsorption experiments using AC and MAC as adsorbent were then performed for reducing nitrate content in tofu industry wastewater. Batch adsorption experiments were conducted under optimal conditions: a pH of 7±0.2, room temperature, a stirring rate of 150 rpm, and an adsorbent dose of 1 g/L. The results demonstrated a significant decrease in nitrate concentration from 28.6 mg/L to 1.2 mg/L, achieving a 95.80% removal efficiency at an equilibrium contact time of 180 minutes. The performance of the MAC was comparable to, and even more favorable than, that of unmodified activated carbon (UAC) used as a control that only achieved 58.74% percentage removal of nitrate. This remarkable nitrate removal efficiency is attributed to the distinct morphology and enhanced surface properties imparted by the hydrochloric acid modification. Therefore, modified activated carbon from coffee grounds shows high potential as an effective adsorbent for wastewater treatment.
Co-Authors Abdul Hadi Agus Budianto Ali Altway Aprilla, Dini Ardhiannas Fadhila Ardhiannas Fadhila, Ardhiannas Ariani Ariani Aulia Rauf, Zahwa Syafa Badruzsaufari Badruzsaufari Bella Santa Rossi Chairul Irawan Eky Novianarenti Etha Nur Fitriana Etha Nur Fitriana Fadil Riyadi, Syahril Febrina Rantifa Sari Febrina Rantifa Sari Hendro Budiarto Hendro Budiarto, Hendro Hesti Wijayanti Hijriyati, Erita Indah Permata Sari Iryanti Fatyasari Nata, Iryanti Fatyasari Isnaini, Muhammad Dody Kartika Udyani Lailan Rizki Syarif Lailan Rizki Syarif, Lailan Rizki Laksono Trisnantoro Lestari Budiyarti Lestari Budiyarti Lutfi, Auliyani Muhammad Fitrah Afriyadi Muhammad Fitrah Afriyadi, Muhammad Fitrah Mursyidin, Dindin Hidayatul Novy Pralisa Putri, Novy Pralisa Nur Ihda Farikhatin Nisa Nurull Fanani Paryanti Paryanti Primata Mardina Ramadhani, Safira Redzy Raudhah Annissa Raudhah Annissa, Raudhah Ridho Roihanul Falah Ridho Roihanul Falah, Ridho Roihanul Rinna Juwita Rinny Jelita, Rinny Sarifah Siswoyo, Deddy Kurniawan Putra Sri Rachmania Juliastuti Suprapto Suprapto Susilo, Tanto Budi Tiara, Ansia Tri Ananda, Lidya Yudhi Ahmad Nazari Yuli Ristianingsih