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Md. Nurul Islam Siddique,A.W. Zularisam,Mimi Sakinah Abd Munaim 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.1
The use of pretreated petrochemical wastewater as provender wastewater for anaerobic degradationwas explored in a continuous stirred tank reactor with dairy and beef cattle manure, under bothmesophilic and thermophilic states. The co-digestion of the wastewaters contributed 50% enhancementin methane production, followed by a 98 ± 0.5% reduction in chemical oxygen demand at 10 days hydraulicretention time. No VFA aggregation was identified. In comparison with the digestion of PWW alone, methaneyield increased by 50–60% under mesophilic conditions and 50–65% under thermophilic conditions due toco-digestion.
Biohydrogen production from palm oil mill effluent using immobilized mixed culture
Lakhveer Singh,Zularisam A. Wahid,Muhammad Faisal Siddiqui,Anwer Ahmad,Mohd Hasbi Ab. Rahim,Mimi Sakinah 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.2
Cell immobilization techniques were adopted to bio-hydrogen production using immobilized anaerobic sludge as the seed culture. Palm oil mill effluent (POME) was used as the substrate carbon source. It was found that with a POME concentration of 20 g COD/l in the feed, the suspended-cell containing reactor was able to produce hydrogen at an optimal rate of 0.348 l H2/(l POME h) at HRT 6 h. However, the immobilized-cell containing reactor exhibited a better hydrogen production rate of 0.589 l H2/(l POME h), which occurred at HRT 2 h. When the immobilized-cell containing reactor was scaled up to 5 l, the hydrogen production rate was 0.500–0.588 l H2/(l POME h) for HRT 2–10 h, but after a thermal treatment (60 8C, 1 h) the rate increase to 0.632 l H2/(l POME h) at HRT 2 h. The main soluble metabolites were butyric acid and acetic acid, followed by propionic acid and ethanol.