Anaerobic digestion of marine biomass for practical operation

作者：Kuroda Kana^*; Akiyama Yuu; Keno Yuichiro; Nakatani Naoki; Otsuka Koji

来源：Journal of Marine Science and Technology, 2014, 19(3): 280-291.

DOI：10.1007/s00773-013-0247-9

• Seaweed
• Green tide
• Food waste
• Fishery waste
• Anaerobic digestion
• Mathematical model

Marine biomass such as seaweed and fishery waste is a potential energy source although it has not yet been practically utilized. This work focuses on renewable energy technologies, particularly anaerobic digestion, for the utilization of various organic wastes as energy resources. Primarily fundamental data for the efficient operation of an anaerobic digestion plant with marine biomass was obtained and a practical operation method was proposed using a simple model based on the carbon mass balance. Batch-processing experiments for seaweed, fishery waste and vegetable waste were carried out and each digestion characteristic was presented. The results indicate that fishery waste is the most efficient even though the accumulation of ammonium ions may inhibit methane production. Seaweeds are not efficient in either the production rate or the yield of methane gas. We investigated the efficient continuous operation for 6 biomass input scenarios with the proposed model. The results show that seaweed can be a useful supplement for the efficient operation.

• 出版日期2014-9