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All Journal Jurnal Teknologi Terapan Jurnal Teknik Kimia USU
Mukhtar Ghozali
Politeknik Negeri Bandung
Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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PENGGANTIAN ALAT PENDUKUNG REAKTOR ANAEROBIK DUA TAHAP GUNA MENINGKATKAN KUALITAS HASIL BIOGAS Mukhtar Ghozali; Herawati Budiastuti; Alviera Wilma Fitrianie; Elis Sri Wahyuni
Jurnal Teknologi Terapan Vol 4, No 2 (2018): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (426.314 KB) | DOI: 10.31884/jtt.v4i2.150

Abstract

BOD/COD ratio of leachate is 0.6 so it fulfils requirement for anaerobic treatment. Leachate is potentially to be treated, however leachate is commonly treated by aeration before it is discharged. To avoid environmental pollution and to optimize treatment, leachate can be treated anaerobically to produce biogas. Two-stage anaerobic reactors are considered to be more effective and efficient in degrading organic substances in leachate. This study aims to evaluate the reactors built to increase degradation efficiency and composition of CH4 contained in biogas. To improve reactor’s performance, the feed tank replacement, leackage check, and gas holder replacement were conducted. Leachate was obtained from Sarimukti Padalarang, West Bandung and starter, cow rumen, was obtained from a slaughter house in Ciroyom, Bandung. The value of pH in the 1st reactor (R1) was in the range of 5-6.5 and in the 2nd reactor (R2) was 7-8. Acidic pH range allows the occurrence of hydrolysis and acetogenesys, meanwhile the normal pH range allows the occurrence of methanogenesys. Analysis parameters were COD, BOD, pH, and composition of CH4  in biogas. CH4 produced within 45 days,  COD degradation efficiency, and maximum CH4 composition were 2 liters, 86.9%, and 24%, respectively. CH4 was started to be produced after day 18.
Pengaruh Kondisi Operasi Terhadap Kualitas Aluminium Stearat dalam Reaktor Batch Dian Ratna Suminar; Rezza Lingga Permana; Yashinta Amellia; Mukhtar Ghozali; Robby Sudarman; Rony Pasonang Sihombing
Jurnal Teknik Kimia USU Vol. 15 No. 1 (2026): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v15i1.22678

Abstract

Aluminum stearate has the same potential as aluminum soap as a lubricant additive that can be developed towards standardization of commercial products. The research stages consist of: (1) Making sodium soap through saponification reaction (stearic acid and NaOH), (2) Replacing sodium metal with aluminum metal through trans-saponification reaction, (3) Purifying the product by washing with distilled water, (4) Separation and drying of the product using a Buchner funnel and oven at 100 oC for 3 hours, (5) Analytical test of aluminum stearate product: testing melting point, water content, ash content, free fatty acid content, quantitative content using AAS spectrophotometer, and solubility test. The results of the study showed that aluminum stearate can be made through 2 reaction stages, namely saponification and trans-saponification in the form of a white powder with a melting point of 115.7 oC, ash content of 13.93%, maximum free fatty acid content of 0.9372%, and insoluble in water and chloroform; partially soluble in n-hexane and toluene waste; and soluble in paraffin, methanol, and nitric acid.
Co-Authors Alviera Wilma Fitrianie Elis Sri Wahyuni Herawati Budiastuti Rezza Lingga Permana Robby Sudarman Sihombing, Rony Pasonang Suminar, Dian Ratna Yashinta Amellia