title: Treatment of ammonium-rich swine waste in modified porphyritic andesite fixed-bed anaerobic bioreactor.
abstract: In this study, a modified porphyritic andesite (WRS) was developed as ammonium adsorbent and bed material for the anaerobic digestion of ammonium-rich swine waste. The performance in bioreactors with modified WRS, natural WRS, calcium chloride and no additives was investigated. The bioreactor with modified WRS exhibited the best performance, with start-up time on the 7th day, methane yield of 359.71 ml/g-VS, and COD removal of 67.99% during all 44 days of the experiment at 35°C. The effective ammonium adsorption and essential ions dissociation for microorganisms by modified WRS, as well as the immobilization of microbial on the surface of the modified WRS play a great role on the high efficiency anaerobic digestion of ammonium-rich swine waste.
authors.affiliation: Graduate School of Life and Environmental Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
authors.forename: Qinghong
authors.initials: Q
authors.lastname: Wang
authors.forename: Yingnan
authors.initials: Y
authors.lastname: Yang
authors.forename: Dawei
authors.initials: D
authors.lastname: Li
authors.forename: Chuanping
authors.initials: C
authors.lastname: Feng
authors.forename: Zhenya
authors.initials: Z
authors.lastname: Zhang
mesh_terms: D000693:Anaerobiosis; D000818:Animals; D001419:Bacteria / Q000378:metabolism; D019149:Bioreactors; D008372:Manure; D000644:Quaternary Ammonium Compounds / Q000378:metabolism*; D013552:Swine; D014556:Urine
chemical_list: D008372:Manure; D000644:Quaternary Ammonium Compounds