Continuous Production of Organic Acids from Palm Oil Mill Effluent with Sludge Recycle by the Freezing-Thawing Method

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Minato Wakisaka²  Phang Lai Yee¹  Mohamed Ismail Adbul Karim³  Mohd Ali Hassan³  Yoshihito Shirai² 

[1] Department of Biochemical Engineering and Science, Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology;Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology;Department of Biotechnology, Faculty of Food Science and Biotechnology, University Putra Malaysia

关键词: Organic Acids;    Palm Oil Mill Effluent;    Anaerobic Treatment;    Recycle;    Freezing-Thawing;   

DOI  :  10.1252/jcej.36.707

来源: Maruzen Company Ltd

【 摘 要 】

References(11)Cited-By(11)The performance of the anaerobic treatment of palm oil mill effluent for organic acids production at a short retention time of less than 5 days was assessed by incorporating a sludge recycle system with no pH control except by adding calcium carbonate. The system could be operated successfully for a 3.5-day retention time at pH 5. The sludge solids in the treated effluent were separated by a freezing-thawing technique and it was partly recycled back to the reactor. The thawed clarified POME solution contained a low SS of 2,200–3,500 mg/L. The organic acids production with a concentration of 10–14 g/L was essentially similar to the treatment for a 5-day retention time without a sludge recycle. Hence by incorporating a sludge recycle system with the freezing-thawing method, the retention time for the treatment could be reduced without affecting the organic acids generation.

【 授权许可】

Unknown