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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Reka Lingkungan Journal of Engineering and Technological Sciences
Andri Gumilar
Bandung Institute Of Technology
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Engineering Environmental Science

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Wastewater Processing Technology Opportunities for Palm Oil Mill Effluent as a Raw Material for Renewable Bioenergy Andri Gumilar; Mindriany Syafila; Marisa Handajani; Ilham Anggamulia; Syarif Hidayat
Journal of Engineering and Technological Sciences Vol. 54 No. 3 (2022)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2022.54.3.13

Abstract

The effect of pH on the formation of hydrogen and ethanol using POME as the substrate has not been widely studied. Indonesia, which is the largest producer of palm oil, has a high potential for the utilization of this liquid waste as a substrate for the formation of hydrogen and ethanol. This study determined the optimum hydrogen and ethanol production conditions by controlling pH. POME was used as substrate in an anaerobic reactor and operated in feed batch mode for 72 hours. Mixed culture anaerobic bacteria as biomass were used in the reactor. The pH of the reactor was adjusted to 4.5, 5.5, 6.5, and 7.5 using NaOH 0.1 N and HCl 0.1 N. The reactor’s performance was investigated by measuring hydrogen production, ethanol production, and volatile fatty acid product. It was found that with an initial pH of 5.5, hydrogen production was higher than for the other pH conditions, at about 14.7% v/v. In contrast, the most increased ethanol production occurred in the reactor with an initial pH of 6.5 with a concentration of 347.7 mg/L. Based on the results of this study, the right pH setting can optimize hydrogen and ethanol production.
Adsorption of Dyes Using Graphene Oxide-Based Nano-Adsorbent: A Review Danar Arifka Rahman; Qomarudin Helmy; Mindriany Syafila; Andri Gumilar
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 19, No 2 (2022): July 2022
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (915.863 KB) | DOI: 10.14710/presipitasi.v19i2.384-397

Abstract

Graphene Oxide (GO) based adsorbents have attracted much attention from researchers because there have been many reports that they are effective for removing dyes from aqueous environments. That is because GO has good mechanical, electrical, optical and chemical properties, so graphene and its derivatives, such as graphene oxide, have been used in various applications in the field of environmental management. Modifying GO into nano size is an effort to improve its performance in removing dyes. This review uses a database from Science Direct, Google Scholar and Springer, which was screened using graphene oxide, pigments, adsorption and nano adsorbent. The performance of the nano adsorbent showed quite good results in the removal of dyes. The isotherm model suitable for adsorption varies between Langmuir, Freundlich and Redlich-Peterson isotherms. Pseudo-second-order (PSO) is the best model to explain the adsorption process kinetics. Nano-adsorbent modification can be reused at least five times with a reduced adsorption capacity of 4-8%. Studies related to adsorption with GO-based nano adsorbents show promising results in pollutant removal. Still, aspects such as synthesis method, surface functional groups interaction and dye ions and the stability of synthesis products need to be investigated further.
POTENSI LIMBAH CAIR KELAPA SAWIT SEBAGAI BIOENERGI BERDASARKAN KARAKTERISTIK DAN KOMPOSISI MIKROORGANISME Meutia, Raihannisa Rizqi; Syafila, Mindriany; Gumilar, Andri
Jurnal Reka Lingkungan Vol 12, No 3 (2024)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekalingkungan.v12i3.341-353

Abstract

Pemanfaatan biomassa sebagai bahan baku energi alternatif saat ini menjadi fokus utama dalam upaya mengurangi ketergantungan terhadap bahan bakar fosil dan mengatasi masalah lingkungan. Dengan kandungan organik yang tinggi dan jumlah yang berlimpah, palm oil mill eflluent (POME) merupakan bahan baku potensial dalam produksi energi alternatif, sekaligus dapat menggantikan posisi tanaman pangan sebagai bahan baku bioenergi.  Produksi energi alternatif melalui limbah POME dapat dilakukan dengan biokonversi limbah secara anaerobik. Secara umum, produk bioenergi berupa bioetanol, biohidrogen, serta produk turunan berupa asam lemak volatil akan dihasilkan pada fase asidogenesis. Karakterisasi limbah POME menunjukkan nilai COD yang tinggi, yaitu mencapai 16.934 mg/L. Hasil identifikasi mikroorganisme menunjukkan POME didominasi oleh Lactobacillaceae, Acetobacteraceae, Prevotellaceae, dan Clostridiceae, yang merupakan kelompok bakteri yang berperan dalam degradasi senyawa organik menghasilkan produk berupa etanol, hidrogen, dan asam lemak volatil sehingga POME berpotensi sebagai bahan baku bagi produksi bioenergi.
Co-Authors Danar Arifka Rahman Ilham Anggamulia Marisa Handajani Meutia, Raihannisa Rizqi Mindriany Syafila Mindriany Syafila Mindriany Syafila Qomarudin Helmy Syarif Hidayat