Panthida Chantho, Charongpun Musikavong and Oramas Suttinun. Pretreatment of Phenolic Compounds in Palm Oil Mill Wastewater by the Thermophilic Bacillus thermoleovorans Strain A2 for Enhancement of Biogas Production. Proceeding of The 2nd International Conference on Environmental Engineering, Science and Management, March 27-29, 2013, Pullman Khon Kaen Raja Orchid Hotel, Khon Kaen, Thailand.