水生所10月19日創(chuàng)新系列講座預(yù)告（2018－15）
時間：2018年10月19日 星期五 上午10:00
地點：3號實驗樓2樓學(xué)術(shù)報告廳
報告專家：Akihiko Terada 教授 日本國立東京農(nóng)工大學(xué)
報告題目：Enrichment, physiology and application of nitrous oxide-reducing bacteria towards the mitigation in engineered systems for nitrogen removal
專家簡介：
Akihiko Terada教授是日本早稻田大學(xué)博士，丹麥科技大學(xué)博士后，現(xiàn)為日本國立東京農(nóng)工大學(xué)教授。主要研究方向為環(huán)境微生物工程，微生物生態(tài)及膜生物反應(yīng)器等方面。學(xué)術(shù)任職于國際水協(xié)會，國際微生物生態(tài)學(xué)會，日本微生物生態(tài)學(xué)會，生物學(xué)會，日本水環(huán)境學(xué)會，化學(xué)工學(xué)會等學(xué)會的會員與骨干成員等。迄今在 Environmental Science & Technology, Water Research, Chemical Engineering Journal, Biotechnology and Bioengineering, Environmental Microbiology, Applied and Environmental Microbiology等國際知名學(xué)術(shù)刊物上發(fā)表SCI論文100多篇，專著6部，專利6項。近五年來國際受邀學(xué)術(shù)報告約20次，受賞15次。2010年以來主持科研經(jīng)費26項。具有廣泛的國際交流和國際合作經(jīng)驗，多次作為國際學(xué)術(shù)會議的學(xué)術(shù)委員和組織委員等。Terada教授是Journal of Chemical Engineering of Japan編輯，Clean Technologies and Environmental Policy和Journal of Water and Environment Technology的副主編，同時也是 Frontiers in Microbiology, Biochemical Engineering Journal, Journal of Bioscience and Bioengineering, Sustainable Environment Research和 Microbial Biotechnology等雜志的編委。
報告摘要：
Nitrous oxide (N2O), known as a highly potent greenhouse and serious ozone-depleting gas, is emitted from natural environments, agricultural croplands, and engineered systems. Due to the advancement of cost-effective nitrogen removal technologies for wastewater treatment, the emission of N2O has been, on the contrary, increasing, requiring its mitigation. Exploration, understanding and application of N2O-reducing bacteria entail, therefore, intensive studies. We have herewith identified, enriched, and isolated highly active N2O-reducing bacteria. The genera Dechloromonas and Azospira were enriched in a biofilm-based bioreactor feeding N2O and organic carbon as an electron acceptor and donor, respectively. The isolates affiliated with these genera harbor functional genes responsible for denitrification, identified as canonical denitrifying bacteria. These isolate hold high N2O reduction activity with the high affinity. More importantly, the isolates, Azospira sp. strains I09 and I13, have unique physiological trains for high oxygen tolerance and fast recovery of N2O reduction after oxygen exposure. The immobilization of Azospira sp. strain I13 consolidates these traits, which can be applied to a nitrogen-removing wastewater treatment process for mitigation of N2O emission. Ongoing challenges and future perspectives will be also introduced.
