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The Production of Renewable Fuels Sago Dregs and Low-Density Polyethylene by Pyrolysis and its Characterization Jahiding, M; Mashuni, Mashuni; Handayani Hamid, Fitri; Sitti Ilmawati, Wa Ode; Hamdana, Renaldi
Science and Technology Indonesia Vol. 9 No. 3 (2024): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.3.565-576

Biomass has been suggested as a sustainable alternative to substitute fossil fuels. Based on the pyrolysis method, the biomass would be converted into energy through decomposition by thermal degradation under an inert atmosphere, resulting in charcoal, liquid, and gas products. The quality of oils is effectively enhanced through the pyrolysis of lignocellulosic biomass and plastic due to the facilitation of deoxygenation by plastics. This study investigates the impact of incorporating low-density polyethylene (LDPE) plastic in co-pyrolysis with sago dregs (SDs) waste. Pyrolysis of SDs and LDPE mixtures with ratios of 5:1, 4:2, 3:3, 2:4, and 1:5 at various temperatures of 375°C, 425°C, and 475°C. The maximum oil yield obtained for SDs and LDPE pyrolysis was 44.94%. The calorific value (CV) of all observed compositions is a minimum of 10,579.57 kcal kg-1 and a maximum of 11,545.21 kcal kg-1. The gas chromatography-mass spectroscopy (GC-MS) analysis confirmed the interaction between SDs and LDPE on co-pyrolysis. The addition of LDPE will produce rich aliphatic and aromatic compounds, like the proportions of alkanes (45.53%), alkenes (30.62%), alcohol (0.4%), and benzene (17.68%). Co-pyrolysis of SDs and LDPE promotes enhanced oil production by reducing oxygenated compounds and increasing hydrocarbon compounds.

Dekomposisi Limbah Organik Tempurung Kelapa Menjadi Bio-Coke Hybrid Menggunakan Metode Pirolisis-LSM (Liquid Solid Mixing) JAHIDING, M
Jounal of Enviromental Science Sustainable Vol 5 No 1 (2024): Environmental Sustainability Journal
Publisher : Environmental Science Program, Ivet University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31331/envoist.v5i1.2875

Coconut shells (TK) are biomass waste containing lignocellulosic components that have potential as a biomass fuel source. This condition encourages the conversion of TK biomass waste into bio-coke as an alternative solid fuel by combining LVM (Liquid Volatile Matter) into the bio-coke structure to increase the calorific value using the pyrolysis-LSM (Liquid Solid Mixing) method. This research aims to determine the effect of LVM and bio-char CS concentrations as materials for making hybrid bio-coke with LVM concentrations of 10, 20, and 30% (w/t) using pyrolysis at a temperature of 600°. C. The characterization results show that the best proximate and heating values are obtained at an LVM concentration of 30%. Bio-coke hybrid has a water content of 5.12%, ash content of 6%, volatile substances of 20.48%, fixed carbon of 63.38%, and a maximum calorific value of 7186.28 kcal/kg. Thus, LVM combined with TK bio-coke is a potential strategy for managing biomass waste in alternative fuel applications.

Chemical Characterization and Antibacterial Activities of Bio-oil from Durian Shell Pyrolysis Mashuni, Mashuni; Kadidae, La Ode; Jahiding, M; Hamid, Fitri Handayani; Kadir, Waris Abdul; Khaeri, Andi Muhammad Naufal
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.v10i1.37674

Foodborne bacteria cause food spoilage, usually Staphylococcus aureus and Escherichia coli. Thus, synthetic preservatives are employed in food preservation to prevent food spoilage caused by microorganisms. Excessive use of synthetic preservatives can cause disease. Bio-oil has become a natural preservative because of its high phenolic content. However, bio-oil still requires purification because the initial bio-oil (grade 3) still contains carcinogenic compounds that are dangerous for consumption. Therefore, this study aims to determine the components of the bio-oil compound after purification and its effectiveness as an antibacterial. Durian shell (DS) is pyrolyzed in a heating reactor without oxygen at a temperature of 330–600ºC (flow rate 6ºC/minute) with a 2-3 cm material size. Furthermore, bio-oil purification includes stages of filtration using activated zeolite, fractional distillation at 70–200ºC (grade 2), and filtration using activated charcoal (grade 1). Bio-oil purification includes stages of filtration using active zeolite and activated charcoal (grade 2), and fractional distillation at a temperature of 150–200ºC (grade 1). Based on Gas Chromatography-Mass Spectrometry (GC-MS) analysis, grade 2 and grade 1 contain the major compounds 1,4-dimethyl-1h-imidazole and acetic acid. The research showed that bio-oil grades 1 and 2, when used at a 30% concentration, exhibit antibacterial strong effects against Staphylococcus aureus and Escherichia coli. These findings suggest that bio-oil grades 1 and 2 could be valuable natural preservatives.

PKM PENERAPAN TEKNOLOGI PIROLISIS UNTUK PRODUKSI BIOPESTISIDA DARI LIMBAH KULIT KAKAO Mashuni, Mashuni; Jahiding, M; Kadidae, La Ode; Handayani Hamid, Fitri
Science and Technology: Jurnal Pengabdian Masyarakat Vol. 1 No. 2 (2024): Juni
Publisher : CV. Science Tech Group

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69930/scitech.v1i2.33

Penerapan teknologi produksi biopestisida dari limbah kulit buah kakao (KBK) menggunakan metode pirolisis merupakan solusi inovatif dalam mengelola limbah pertanian menjadi produk bernilai tambah yang ramah lingkungan. Penelitian ini bertujuan untuk mengubah limbah KBK menjadi biopestisida melalui proses pirolisis. Tahapan pengabdian ini meluputi, sosialisasi, strategi pemecahan masalah, pengenalan prototipe pengolahan KBK, dan pelatihan. Partisipasi mitra yaitu kelompok tani dan PT. Hasfarm Niaga Nusantara yang dilaksanakan di Desa Ponanggo Jaya Kecamatan Lambandia Kabupaten Kolaka Timur Provinsi Sulawesi Tenggara. Hasil produksi biopestisida KBK menunjukkan kemampuan untuk menghambat pertumbuhan jamur pada benih tanaman kakao serta selama masa penyimpanan 6 hari benih kakao memiliki daya tumbuh sebesar 60%. Hasil evaluasi menunjukkan bahwa pengembangan teknologi pirolisis untuk produksi biopestisida dari limbah KBK memiliki potensi besar untuk memberikan manfaat yang signifikan bagi pertanian dan lingkungan. Diperlukan penelitian lebih lanjut dan kerjasama antara pemerintah, industri, dan petani untuk mengembangkan teknologi ini secara lebih luas dan efektif.

A Review on Carbon Materials Derived from Biomass Pyrolysis for Supercapacitor Applications Hamid, Fitri Handayani; Yunita, Kurnia Sri; Mashuni, Mashuni; Jahiding, M; Hasan , Erzam S
Indonesian Journal of Green Chemistry Vol. 2 No. 1 (2025): April
Publisher : Science Tech Group

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69930/ijgc.v2i1.356

Carbon-based materials are solid carbon enriched with carbon, produced through thermochemical processes such as pyrolysis. However, unmodified and unactivated carbon materials obtained from low-temperature pyrolysis of biomass show poor performance in energy storage applications due to their unsuitable physicochemical and electrical properties, such as low surface area, inadequate pore structure, and low density and conductivity. To improve the properties of carbon, surface modification and activation are applied to enhance carbon's surface features and structure, resulting in better electrochemical performance. Various activation methods are used to modify the surface properties of carbon, making it more suitable for supercapacitor applications. This review provides a comprehensive overview of carbon activation techniques, focusing on their effects on physicochemical and electrical properties and their potential use as supercapacitor electrodes. The article also highlights existing research gaps and suggests directions for future development.

Chemical Characterization and Antibacterial Activities of Bio-oil from Durian Shell Pyrolysis Mashuni, Mashuni; Kadidae, La Ode; Jahiding, M; Hamid, Fitri Handayani; Kadir, Waris Abdul; Khaeri, Andi Muhammad Naufal
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.v10i1.37674

Foodborne bacteria cause food spoilage, usually Staphylococcus aureus and Escherichia coli. Thus, synthetic preservatives are employed in food preservation to prevent food spoilage caused by microorganisms. Excessive use of synthetic preservatives can cause disease. Bio-oil has become a natural preservative because of its high phenolic content. However, bio-oil still requires purification because the initial bio-oil (grade 3) still contains carcinogenic compounds that are dangerous for consumption. Therefore, this study aims to determine the components of the bio-oil compound after purification and its effectiveness as an antibacterial. Durian shell (DS) is pyrolyzed in a heating reactor without oxygen at a temperature of 330–600ºC (flow rate 6ºC/minute) with a 2-3 cm material size. Furthermore, bio-oil purification includes stages of filtration using activated zeolite, fractional distillation at 70–200ºC (grade 2), and filtration using activated charcoal (grade 1). Bio-oil purification includes stages of filtration using active zeolite and activated charcoal (grade 2), and fractional distillation at a temperature of 150–200ºC (grade 1). Based on Gas Chromatography-Mass Spectrometry (GC-MS) analysis, grade 2 and grade 1 contain the major compounds 1,4-dimethyl-1h-imidazole and acetic acid. The research showed that bio-oil grades 1 and 2, when used at a 30% concentration, exhibit antibacterial strong effects against Staphylococcus aureus and Escherichia coli. These findings suggest that bio-oil grades 1 and 2 could be valuable natural preservatives.

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