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Bani, Okta
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Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Journal : Jurnal Teknik Kimia USU

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Pengujian Kualitas Biodiesel dari Minyak Kelapa Sawit Dengan Katalis Heterogen Abu Daun Kucai (Allium schoenoprasum): Parameter Berat Katalis, Rasio Mol Minyak Terhadap Metanol dan Waktu Reaksi Bani, Okta; David; Febianto, Toby
Jurnal Teknik Kimia USU Vol. 11 No. 2 (2022): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v11i2.8924

Abstract

The Chives’s Plant (Allium schoenoprasum) came from the wild ancestors that is the native of European and Asian. The ash of chive leaves contain considerable amount of metal, enabling its usage as catalyst in the making of biodiesel. Based on the Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX) characterization, chive leaf ash calcined at 600 ˚C contained 26.14% potassium oxide, 17.55 calcium oxide, 21.94% carbon, and 22.05% phosphorus pentoxide. The ash of chive leaves later on, used as the catalyst on the biodiesel making from the palm oil. The highest biodiesel yield of 94.42% was achieved at reaction temperature of 60 ˚C, 3% catalyst amount, ratio of oil and methanol 1:12, and reaction time 120 minutes. Based on its density, viscosity, moisture, and total glycerol biodiesel has met the Standar Nasional Indonesia (SNI) 7182:2015. However, the purity of biodiesel still haven’t met the standards, in which methyl ester content was 69.13% and the triglyceride was 18.83%.
Pengurangan Nilai COD pada Effluent Fermentor Biogas UASB-HCPB dengan Memanfaatkan Mikroalga Chlorella vulgaris Sidabutar, Rivaldi; Trisakti, Bambang; Irvan; Bani, Okta; Nasution, Juan Akmal
Jurnal Teknik Kimia USU Vol. 13 No. 2 (2024): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v13i2.16161

Abstract

Palm oil mill effluent (POME) is the main waste generated from the palm oil industry. LCPKS has a COD level of 57,000-60,400 mg/L. High levels of COD can harm the environment. LCPKS treatment techniques generally use a combination of anaerobic and aerobic waste treatment methods. The anaerobic process has been conducted using a UASB-HCPB reactor. But, the COD levels of anaerobic results have not reached the quality standards so that further processing is needed. Microalgae have the potential to reduce contaminant levels in wastewater. Chlorella vulgaris microalgae is a microalgae that is widely used in wastewater treatment. This study utilized Chorella vulgaris in reducing the COD levels of the effluent of the UASB-HCPB biogas fermentor with variations in lighting intensity and variations in the ratio of effluent to microalgae. It was found that the lighting intensity of light:dark (24:0) hours provided optimal microalgae growth so as to provide the best COD reduction with a COD reduction efficiency of 87.5%. The ratio of microalgae to effluent of 1000 mL: 500 mL showed the best COD reduction with an efficiency of 93.75%.
Co-Authors Bambang Trisakti david Febianto, Toby Irvan Nasution, Juan Akmal Sidabutar, Rivaldi