scholarly journals SELEKSI DESAIN ROOF TANK CSTR UNTUK PLANT BIOGAS POME SETARA 700KW

2020 ◽  
Vol 16 (2) ◽  
pp. 37-42
Author(s):  
Ridho Dwimansyah ◽  
Trisaksono Bagus Priambodo ◽  
Yusnitati
Keyword(s):  
Palm Oil ◽  
Biogas Production ◽  
Construction Site ◽  
Continuous Stirred Tank Reactor ◽  
Oil Processing ◽  
Continuous Stirred Tank ◽  
Palm Oil Mill ◽  
Tank Design ◽  
High Level ◽  
Dome Shape

Indonesia is the largest palm oil producer in the world. In the process of its processing into Crude PalmOil (CPO), the palm oil processing industry produces various types of waste, including liquid wasteknown as Palm Oil Mill Effluent (POME). POME contains organic matter that is high enough so it mustbe processed before being discarded into the environment. During this time, POME is treated usinganaerobic ponds which are quite large and produce metana gas. Metanae gas has a high level ofemissions, but it potential to become an energy source if it is utilized. Therefore, BPPT in collaborationwith PT. Perkebunan Nusantara 5 built a biogas production pilot plant from POME equivalent to 700kWfor boiler fuel at PKS Sei Pagar, Kampar Regency, Riau Province. The process of converting POMEinto biogas uses Continuous Stirred Tank Reactor (CSTR) technology. The research aims to choosethe best roof tank design for CSTR. The method used is the Pahl and Beitz method and the House ofQuality. The result of the study are the best specification planning data, which is 1400 mm in diameterand the construction site position at a height of 15350 mm from the bottom of the reactor, with use aninternal support column, with the best variant chosen is the fixed roof type with dome shape.

scholarly journals The Minimum Requirements for Nickel and Cobalt as Trace Metals in Thermophilic Biogas Fermentation of Palm Oil Mill Effluents

2018 ◽  
Vol 34 (3) ◽  
pp. 1278-1282 ◽  
Author(s):  
Bambang Trisakti ◽  
Fatimah Batubara ◽  
Hiroyuki Daimon ◽  
Irvan .
Keyword(s):  
Trace Metals ◽  
Palm Oil ◽  
Biogas Production ◽  
Liquid Waste ◽  
Total Solid ◽  
Raw Material ◽  
Continuous Stirred Tank Reactor ◽  
Minimum Requirements ◽  
Thermophilic Condition ◽  
Palm Oil Mill

This paper reports the minimum requirements of nickel and cobalt as trace metals in the formation of biogas from the digestion of palm oil mill effluent (POME). Anaerobic digestion was conducted in a two-liter continuous stirred tank reactor (CSTR) and operated at a thermophilic condition of 55oC. As raw material, a non-treated liquid waste from the mills was used. Hydraulic retention time (HRT) of the digesters was preserved at six days. The results come to the conclusion that the decrease of trace metals concentration didn’t influence the total solid, volatile solid concentration and also M-alkalinity. Based on the analyzed parameter, the reduction of trace metals concentration up to 97% of the initial nickel and cobalt concentration, 0.49 and 0.42 mg/L for nickel and cobalt, still allows the fermentation to obtain optimum biogas production, where the 90% reduction of trace metals produced the average volume of biogas 10.5 L/day at the rate of VS degradation 52-53%.

scholarly journals Potential Utilisation of Dark-Fermented Palm Oil Mill Effluent in Continuous Production of Biomethane by Self-Granulated Mixed Culture

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Safa Senan Mahmod ◽  
Azratul Madihah Azahar ◽  
Abdullah Amru Indera Luthfi ◽  
Peer Mohamed Abdul ◽  
Mohd Shahbudin Mastar ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Palm Oil ◽  
Continuous Production ◽  
Palm Oil Mill Effluent ◽  
Net Energy ◽  
Continuous Stirred Tank Reactor ◽  
Agricultural Industry ◽  
Thermophilic Conditions ◽  
Continuous Stirred Tank ◽  
Palm Oil Mill

Abstract Two-stage anaerobic digestion of palm oil mill effluent (POME) is a promising method for converting the waste from the largest agricultural industry in Southeast Asia into a clean and sustainable energy. This study investigates the degradation of acid-rich effluent from the dark fermentation stage for the production of biomethane (BioCH4) in a 30-L continuous stirred-tank reactor (CSTR). The continuous methanogenic process was operated with varied HRTs (10 - 1 day) and OLRs (4.6–40.6 gCOD/L.d−1) under thermophilic conditions. Methanothermobacter sp. was the dominant thermophilic archaea that was responsible for the production rate of 4.3 LCH4/LPOME.d−1 and methane yield of 256.77 LCH4kgCOD at HRT of 2 d, which is the lowest HRT reported in the literature. The process was able to digest 85% and 64% of the initial POME’s COD and TSS, respectively. The formation of methane producing granules (MPG) played a pivotal role in sustaining the efficient and productive anaerobic system. We report herein that the anaerobic digestion was not only beneficial in reducing the contaminants in the liquid effluent, but generating BioCH4 gas with a positive net energy gain of 7.6 kJ/gCOD.

scholarly journals ANALISIS KEEKONOMIAN PEMBANGUNAN PEMBANGKIT LISTRIK TENAGA BIOGAS DARI POME DENGAN CONTINUOUS STIRRED TANK REACTOR (CSTR)

2019 ◽  
Vol 13 (1) ◽  
pp. 75-84 ◽  
Author(s):  
Agus Sugiyono ◽  
Adiarso Adiarso ◽  
Ratna Etie Puspita Dewi ◽  
Yudiartono Yudiartono ◽  
Agung Wijono ◽  
...  
Keyword(s):  
Palm Oil ◽  
Palm Oil Mill Effluent ◽  
Stirred Tank ◽  
Continuous Stirred Tank Reactor ◽  
Stirred Tank Reactor ◽  
Tank Reactor ◽  
Continuous Stirred Tank ◽  
Palm Oil Mill

Limbah cair kelapa sawit atau dikenal dengan POME (palm oil mill effluent) dapat diproses menjadi biogas sebagai bahan bakar untuk pembangkit listrik. Produksi POME saat ini dapat digunakan untuk pembangkit listrik tenaga biogas (PLTBg) dengan kapasitas mencapai 153,4 MW yang sebagian besar berada di wilayah Sumatera. Salah satu pabrik kelapa sawit (PKS) yang berpotensi untuk pembangunan PLTBg adalah PKS Sei Pagar milik PTPN V Pekanbaru. Studi ini bertujuan untuk melakukan analisis keekonomian pembangunan PLTBg. PLTBg didesain dengan kapasitas 700 kW dengan menggunakan biodigester jenis continuous stirred tank reactor (CSTR). Listrik yang dihasilkan akan dijual ke PLN dengan harga jual sebesar 85% biaya pokok penyediaan (BPP) pembangkitan wilayah Riau sebesar 1.249,5 Rp/kWh. Hasil perhitungan keekonomian menunjukkan bahwa biaya investasi mencapai 26,3 milar Rupiah dengan skema 70% pinjaman dari bank dan sisanya 30% dengan modal sendiri (equity). Biaya opersi dan perawatan mencapai 2,3 miliar Rupiah setiap tahun. Pembangunan PLTBg layak untuk dilaksanakan dengan nilai IRR sebesar 11,44%, waktu pengembalian modal selama 7 tahun 11 bulan, dan NPV sebesar 1.1 miliar Rupiah.

scholarly journals Enhancement of Thermophilic Biogas Production from Palm Oil Mill Effluent by pH Adjustment and Effluent Recycling

Processes ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 878
Author(s):  
Apinya Singkhala ◽  
Chonticha Mamimin ◽  
Alissara Reungsang ◽  
Sompong O-Thong
Keyword(s):  
Palm Oil ◽  
Oil Palm ◽  
Biogas Production ◽  
Optimal Dose ◽  
Methane Yield ◽  
Ph Adjustment ◽  
Oil Palm Ash ◽  
Palm Oil Mill ◽  
Archaea Community ◽  
Effluent Recycling

A sudden pH drops always inhibits the anaerobic digestion (AD) reactor for biogas production from palm oil mill effluent (POME). The pH adjustment of POME by oil palm ash addition and the biogas effluent recycling effect on the preventing of pH drop and change of the archaea community was investigated. The pH adjustment of POME to 7.5 increased the methane yield two times more than raw POME (pH 4.3). The optimal dose for pH adjustment by oil palm ash addition was 5% w/v with a methane yield of 440 mL-CH4/gVS. The optimal dose for pH adjustment by biogas effluent recycling was 20% v/v with a methane yield of 351 mL-CH4/gVS. Methane production from POME in a continuous reactor with pH adjustment by 5% w/v oil palm ash and 20% v/v biogas effluent recycling was 19.1 ± 0.25 and 13.8 ± 0.3 m3 CH4/m3-POME, respectively. The pH adjustment by oil palm ash enhanced methane production for the long-term operation with the stability of pH, alkalinity, and archaea community. Oil palm ash increased the number of Methanosarcina mazei and Methanothermobacter defluvii. Oil palm ash is a cost-effective alkali material as a source of buffer and trace metals for preventing the pH drop and the increased methanogen population in the AD process.

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