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Pelatihan Pembuatan Arang Aktif dari Sekam Padi untuk Penjernihan Minyak jelantah sebagai Bekal Wirausaha Masyarakat Mulyani, Sri; Ciptonugroho, Wirawan; Wathon, Muhammad Hizbul; Shidiq, Ari Syahidul
Jurnal Pemberdayaan Masyarakat Vol 8 No 2 (2023): November
Publisher : Direktorat Penelitian dan Pengabdian kepada Masyarakat (DPPM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21067/jpm.v8i2.7355

Most of the area in Jabung Village, Pelupuh, Sragen is paddy fields, with most of the population's livelihood being farm workers and convection business. However, during the Pandemic, the convection business was sluggish and slumped. This makes the people of Jabung village need other alternative businesses to increase their income. The amount of agricultural land in Jabung village, which produces rice husk waste, can be an alternative for new businesses for the community. Based on the research results of the Research Group (RG) at the Chemistry Education Study Program, UNS, rice husks can be made as activated charcoal, which is used to purify used cooking oil. The purified cooking oil can be used to make biodiesel, soap and aromatherapy candles. Therefore, the community service team of the Chemistry Education Study Program has provided training on the manufacture of activated charcoal from rice husks and its use for purifying used cooking oil as a provision for business in Jabung Village. Attended by 60 participants, this training focused on three main activities; educating the community about the process of absorption by activated charcoal, purifying used cooking oil using activated charcoal from rice husks, and marketing processed products from used cooking oil and activated charcoal. The results of the evaluation of this training, as many as 36.73% of participants strongly agree, and 53.06% agree that the community gets direct benefits from training activities on making activated charcoal from rice husks and its use for cleaning used cooking oil.

Modification of Coal Fly Ash Waste into Manganese-Oxide-Coated-Zeolite (MOCZ) to Adsorb Heavy Metal Ions Ni2+ Saputro, Sulistyo; Mahardiani, Lina; Susilowati, Endang; Nurhayati, Nanik Dwi; Ciptonugroho, Wirawan; Windiasty, Ananda Dea; Prihantoro, Alita Selvi
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 1, May 2024
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i1.35794

High consumption of coal as a source of electrical energy in Indonesia has resulted in piles of waste from coal burning, namely fly ash, which can damage the environment and harm health. Fly ash contains main oxides, namely silica (SiO2) and alumina (Al2O3), whose components are similar to zeolite, so they can be synthesized into zeolite-like material (ZLM) which can be used as an adsorbent for heavy metal Ni2+. Therefore, this research discussed the characterization of manganese-oxide-coated-zeolite (MOCZ) from fly ash waste as a heavy metal adsorbent. The research procedure consisted of preparation, purification, and activation stage of fly ash to obtain fly ash that is free from impurities, the stage of making sodium silicate and sodium aluminate, and zeolite synthesis. The resulting zeolite was then coated with manganese oxide to expand the surface area of the zeolite and increase the ability of zeolite to adsorb heavy metal Ni2+. The research results showed that fly ash waste that was coated with manganese oxide can adsorb heavy metal Ni2+. The adsorption of the Ni2+ metal ion solution by zeolite with MOCZ modification is in line with the pseudo-second-order kinetic and Langmuir isotherm.

Modification of Polyethylene Glycol and Citric Acid on Palm Fiber Waste Nanofibers on the Adsorption of Violet Crystal Dyes Mahardiani, Lina; Damayanti, Nida; Maharani, Rizki Deva; Saputro, Sulistyo; Susilowati, Endang; Ciptonugroho, Wirawan; Nurhayati, Nanik Dwi
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 8, No 3 (2023): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v8i3.80105

This study developed nanofibers derived from sugar palm fiber waste, incorporating citric acid and polyethylene glycol (PEG) modifications to adsorb crystal violet (CV) dye. The synthesis process involved alkalization-acid hydrolysis and bleaching techniques. Subsequent analyses of nanofiber characteristics were conducted using Fourier-Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), and Scanning Electron Microscopy-Energy Dispersive X-ray (SEM-EDX). The efficacy of these modified nanofibers in adsorbing CV was quantitatively measured using an Ultraviolet-Visible (UV-Vis) spectrophotometer. The study successfully synthesized nanofibers from sugar palm fiber waste with modifications: PEG-modified nanofibers (NP 2 and NP 24) and citric acid-modified nanofibers (NS 2 and NS 24). These modifications resulted in nanofibers with a smooth, white texture. FTIR analysis of the samples (N, NP 2, NP 24, NS 2, and NS 24) revealed the presence of functional groups essential for cellulose, specifically -OH, C-H, and C-O groups. The addition of citric acid introduced a new group, C=O, albeit with very weak intensity. PEG modifications were evident from the stretching observed in the -OH groups. SEM analysis confirmed the presence of a layer on the nanofibers, attributed to citric acid (NS 2 and NS 24) and PEG (NP 2 and NP 24). XRD results indicated that the pre-and post-modification nanofibers exhibited a semi-crystalline phase. The adsorption mechanism was predominantly guided by Van der Waals electrostatic interactions between the absorbent material and the adsorbate. Intriguingly, the citric acid and PEG modifications did not significantly alter the adsorption outcomes. The adsorption capacity remained stable over time, as evidenced by measurements of 0, 15, 30, 45, 60, 90, and 120 minutes.

Modification of Coal Fly Ash Waste into Manganese-Oxide-Coated-Zeolite (MOCZ) to Adsorb Heavy Metal Ions Ni2+ Saputro, Sulistyo; Mahardiani, Lina; Susilowati, Endang; Nurhayati, Nanik Dwi; Ciptonugroho, Wirawan; Windiasty, Ananda Dea; Prihantoro, Alita Selvi
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 1, May 2024
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i1.35794

High consumption of coal as a source of electrical energy in Indonesia has resulted in piles of waste from coal burning, namely fly ash, which can damage the environment and harm health. Fly ash contains main oxides, namely silica (SiO2) and alumina (Al2O3), whose components are similar to zeolite, so they can be synthesized into zeolite-like material (ZLM) which can be used as an adsorbent for heavy metal Ni2+. Therefore, this research discussed the characterization of manganese-oxide-coated-zeolite (MOCZ) from fly ash waste as a heavy metal adsorbent. The research procedure consisted of preparation, purification, and activation stage of fly ash to obtain fly ash that is free from impurities, the stage of making sodium silicate and sodium aluminate, and zeolite synthesis. The resulting zeolite was then coated with manganese oxide to expand the surface area of the zeolite and increase the ability of zeolite to adsorb heavy metal Ni2+. The research results showed that fly ash waste that was coated with manganese oxide can adsorb heavy metal Ni2+. The adsorption of the Ni2+ metal ion solution by zeolite with MOCZ modification is in line with the pseudo-second-order kinetic and Langmuir isotherm.

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