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Title: ホタテ貝殻を利用した晶析法によるメタン発酵消化液からのリン回収プロセスの開発
Other Titles: Development of a process for recovering phosphorus from methane fermentation digested liquid by crystallization method using a scallop shell powder
Authors: 中嶋, 昴1 Browse this author
清水, 直人2 Browse this author →KAKEN DB
岩渕, 和則3 Browse this author →KAKEN DB
Authors(alt): Nakajima, Subaru1
Shimizu, Naoto2
Iwabuchi, Kazunori3
Keywords: リン回収
Phosphorus recovering
Methane fermentation digested liquid
Scallop shell
Crystallization method
Issue Date: Mar-2015
Publisher: 農業食料工学会北海道支部
Journal Title: 農業食料工学会北海道支部会報
Volume: 55
Start Page: 47
End Page: 51
Abstract: In this study, we aimed to develop a process for recovering phosphorus from methane fermentation digested liquid by crystallization on the surface of scallop shell. Scallop shell powder was put into methane fermentation digested liquid at appropriate pH, and HAP (hydroxyapatite) was crystallized on the surface of the shell. HAP on the shell powder was dehydrated to recover phosphorus. Fabricatel system used a fluidized bed reactor for crystallization method. Measurement parameters were influent phosphate concentration, effluent phosphate concentration, and pH. We performed a model experiment using a fluidized bed reactor. It took 3 hours to treat all raw water which was 12 L of phosphorus solution prepared 50 mg-PO4/L. As the result of this experiment, we achieved 82.6% of phosphorus recovering efficiency. But when we tried to recover phosphorus from methane fermentation digested liquid, the organic matter blocked HAP crystallization. So the recovering efficiency was less than that of model experiment. The phosphorus recovering efficiency improved in condition that methane fermentation digested liquid was diluted three times and reduced concentration of the organic matter.
Type: article
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 清水 直人

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