Nitrogen and Phosphorus Species Recovery from organism waste and Solid Methane Fermentation without Ammonia Inhibition

2015 Fiscal Year Final Research Report

• Project/Area Number: 25281046
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Environmental conscious materials and recycle
• Research Institution: University of Tsukuba
• Principal Investigator: ZHANG Zhenya 筑波大学, 生命環境系, 教授 (20272156)
• Co-Investigator(Kenkyū-buntansha): YANG Yingnan 筑波大学, 生命環境系, 准教授 (50561007) ; LEI Zhongfang 筑波大学, 生命環境系, 准教授 (30634505) ; SHIMIZU Kazuya 東洋大学, 生命科学部, 准教授 (10581613)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: バイオマスエネルギー / 生物資源 / 廃棄物再資源化 / 窒素資源回収 / リン資源回収 / 水熱処理 / 乾式メタン発酵 / 有機窒素の無機化

Outline of Final Research Achievements

This study aims at (1) recovery nitrogen resources, (2) phosphorus recovery from solid organic waste, and (3) establish the recovery process. Also, 15 papers have been published.
The TP concentration in primary sludge, secondary sludge and digested sludge was investigated respectively, and the conditions for recovery P was established. Pretreatment of manure for breakdown of the complex fiber structures and disintegration of solid organic-N to produce ammonia is beneficial for enhancing manure digestibility and the downstream N recovery. Short-term dry AD and hydrothermal treatment (HTT) were applied respectively for degradation of the solid manure. This section explored the feasibility of comprehensive utilization of C, N and P resources in swine manure (SM) through short-term dry AD (anaerobic digestion) followed by dry ammonia stripping. Results from this work reflected an overall N recovery efficiency of 57% from CM and increase in methane yield by 24% (compared to raw CM).

Free Research Field

バイオプロセス工学