Accelerated two-stage bioprocess for hydrogen and methane production from palm oil mill effluent using continuous stirred tank reactor and microbial electrolysis cell

2019 ◽  
Vol 229 ◽  
pp. 84-93 ◽  
Author(s):  
Santhana Krishnan ◽  
Mohd Fadhil Md Din ◽  
Shazwin Mat Taib ◽  
Mohd Nasrullah ◽  
Mimi Sakinah ◽  
...  
Keyword(s):  
Palm Oil ◽  
Methane Production ◽  
Stirred Tank ◽  
Electrolysis Cell ◽  
Microbial Electrolysis Cell ◽  
Continuous Stirred Tank Reactor ◽  
Stirred Tank Reactor ◽  
Tank Reactor ◽  
Continuous Stirred Tank ◽  
Palm Oil Mill

Appropriate mixing speeds of Rushton turbine for biohydrogen production from palm oil mill effluent in a continuous stirred tank reactor

Energy ◽  
2019 ◽  
Vol 179 ◽  
pp. 823-830 ◽  
Author(s):  
Tanawat Srirugsa ◽  
Suteera Prasertsan ◽  
Thanansak Theppaya ◽  
Theerayut Leevijit ◽  
Poonsuk Prasertsan
Keyword(s):  
Palm Oil ◽  
Biohydrogen Production ◽  
Palm Oil Mill Effluent ◽  
Stirred Tank ◽  
Continuous Stirred Tank Reactor ◽  
Stirred Tank Reactor ◽  
Rushton Turbine ◽  
Tank Reactor ◽  
Continuous Stirred Tank ◽  
Palm Oil Mill

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 Effects of organic loading rate on methane production from switchgrass in batch and semi-continuous stirred tank reactor system

2022 ◽  
Vol 156 ◽  
pp. 106306
Author(s):  
Hilal Ünyay ◽  
Fatih Yılmaz ◽  
İbrahim Alper Başar ◽  
Nuriye Altınay Perendeci ◽  
Işık Çoban ◽  
...  
Keyword(s):  
Methane Production ◽  
Loading Rate ◽  
Reactor System ◽  
Stirred Tank ◽  
Organic Loading Rate ◽  
Continuous Stirred Tank Reactor ◽  
Organic Loading ◽  
Stirred Tank Reactor ◽  
Tank Reactor ◽  
Continuous Stirred Tank

Impact of goethite dosed continuous stirred tank reactor on continuous methane production at different organic loading rates

2019 ◽  
Vol 92 (2) ◽  
pp. 173-176 ◽  
Author(s):  
Zhanghong Wan ◽  
Shuchuan Peng ◽  
Xun Zhang ◽  
Jin Wang ◽  
Xiangming Li ◽  
...  
Keyword(s):  
Methane Production ◽  
Stirred Tank ◽  
Continuous Stirred Tank Reactor ◽  
Organic Loading ◽  
Stirred Tank Reactor ◽  
Tank Reactor ◽  
Loading Rates ◽  
Continuous Stirred Tank

Influence of organic loading rates on the production of methane from anaerobic digestion of sewage concentrate

2018 ◽  
Vol 29 (7) ◽  
pp. 1130-1141 ◽  
Author(s):  
Emmanuel Alepu Odey ◽  
Kaijun Wang ◽  
Zifu Li ◽  
Ruiling Gao
Keyword(s):  
Methane Production ◽  
Loading Rate ◽  
Biogas Production ◽  
Stirred Tank ◽  
Organic Loading Rate ◽  
Continuous Stirred Tank Reactor ◽  
Organic Loading ◽  
Stirred Tank Reactor ◽  
Tank Reactor ◽  
Continuous Stirred Tank

This study investigated the efficiency of biogas production from sewage concentrate through anaerobic digestion. A continuous stirred tank reactor with a 900-mL working volume was used. The experiment was designed to investigate the influence of organic loading rate on the efficiency of biogas production and to determine the most suitable organic loading rate condition for methane production from sewage concentrate by using continuous stirred tank reactor. The reactor was operated at different organic loading rates of 1.8, 0.8, and 0.6 gCOD/(L.d). The methane composition of the biogas produced from the treatment organic loading rate (OLR). The beginning of the experiment recorded low methane production because of the high organic loading rate. However, the later part of the experiment recorded high and stable biogas production because of the relatively low OLR. Results suggested that a 0.6 gCOD/(L.d) OLR was the most efficient setup parameter for ideal methane production from sewage concentrate by using continuous stirred tank reactor.

scholarly journals Process Performance and Microbial Community Variation in High-Rate Anaerobic Continuous Stirred Tank Reactor Treating Palm Oil Mill Effluent at Temperatures Between 55 °C and 70 °C

2021 ◽  
Author(s):  
Maneerat Khemkhao ◽  
Vichai Domrongpokkaphan ◽  
Chantaraporn Phalakornkule
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Methane Production ◽  
Stirred Tank ◽  
Process Performance ◽  
Continuous Stirred Tank Reactor ◽  
Tank Reactor ◽  
Hydrogenotrophic Methanogenesis ◽  
Continuous Stirred Tank ◽  
Palm Oil Mill

Abstract Palm oil mill effluent (POME) is wastewater with a relatively high temperature (80 – 90 °C) that is generated from the extraction of oil from palm fruit and palm kernels. Owing to its high discharge temperatures, the thermophilic anaerobic digestion (AD) of POME could be advantageous as treatment at thermophilic temperatures can reduce loads for cooling the wastewater. In this study, the effects of stepwise temperature increments of 5 °C from 55 °C to 70 °C on the AD of POME were investigated in a continuous stirred tank reactor (CSTR) operated under high organic loading rates (OLRs). The process performance and microbial community structure at each temperature interval were evaluated. It was observed that the methane production rates of the CSTR increased with increasing OLRs up to values of 13.7 g/L d, 25.7 g/L d, and 26.5 g/L d at operating temperatures of 55 °C, 60 °C, and 65 °C, respectively. As a result of the increasing OLRs, the maximum rate of methane production increased from 3.8 L/L d at 55 °C to 4.4 L/L d at 60 °C and to 3.8 L/L d at 65 °C. The microbial community structure analysis showed that there were notable reductions in the gene copy number of the bacterial domain and the Methanosarcinales order with increasing temperatures from 55 °C to 60 °C and to 65 °C, whereas hydrogenotrophic methanogens, especially the genus Methanobacterium, in the order Methanobacteriales became dominant at 60 °C and 65 °C. Thus, the methanogenesis pathway was suggested to be a combination of acetoclastic and hydrogenotrophic methanogenesis at 55 °C and 60 °C with an increased contribution of hydrogenotrophic methanogenesis at 60 °C, whereas methane was mainly generated via hydrogenotrophic methanogenesis at 65 °C. The thermophilic AD of POME at 60 °C was found to be promising because the methane content in the biogas and the methane production rates were optimal, with an average methane content of approximately 73%.

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