文献类型：期刊文献

英文题名：Low-temperature hydrothermal pretreatment followed by dry anaerobic digestion: A sustainable strategy for manure waste management regarding energy recovery and nutrients availability

作者：Huang, Weiwei[1,2];Zhao, Ziwen[1];Yuan, Tian[1];Huang, Wenli[3];Lei, Zhongfang[1];Zhang, Zhenya[1]

机构：[1]Univ Tsukuba, Grad Sch Life & Environm Sci, 1-1-1 Tennodai, Tsukuba, Ibaraki 3058572, Japan;[2]East China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Nankai Univ, Coll Environm Sci & Engn, MOE Key Lab Pollut Proc & Environm Criteria, 94 Weijin Rd, Tianjin 300071, Peoples R China

年份：2017

卷号：70

起止页码：255

外文期刊名：WASTE MANAGEMENT

收录：;EI(收录号：20173804185042);WOS:【SCI-EXPANDED(收录号:WOS:000418981200028)】；

基金：This work was supported by JSPS KAKENHI Grant Numbers JP15K00599 and JP15K12235.

语种：英文

外文关键词：Hydrothermal technology; Swine manure; Dry anaerobic digestion; Methane; Nutrients availability

摘要：This study evaluated the feasibility of low-temperature hydrothermal (HT) pretreatment for improving dry anaerobic digestion (AD) of swine manure (SM) and nutrient elements reclamation, with specific goals to minimize the drawbacks of conventional HT process including high energy consumption, inhibitory compounds formation and unfavorable pH/alkalinity decrease. Pretreatment at 110-130 degrees C for holding 30 min increased the soluble organic carbon (SOC) concentration in SM by 13-26%. After being mixed with inocula, the pretreated SM was applied for dry AI) tests successfully without initial pH adjustment, achieving a CH4 yield of 280.18-328.93 mlig-VSfed (14-34% increase compared to that from raw SM). Energy assessment indicated a positive net gain of 0.95 Wig-VS by adopting HT pretreatment at 130 degrees C. Except for increment in CH4 yield, low-temperature HT pretreatment also promoted organic-N mineralization, increasing N fractions in the digestate available for plants. After 70 days' dry AD, a high ammonia-N to total nitrogen (TN) ratio of 71% was obtained for the SM sample pretreated at 130 degrees C, in sharp contrast to that of 38% in raw SM. P bioavailability in the final digestate was not greatly affected by the HT pretreatment since the labile organics were mostly degraded after AD, in which P existing forms were influenced by the multivalent metals content in SM. Overall, 23-27% of the total P was potentially bioavailable in all digestates. (C) 2017 Elsevier Ltd. All rights reserved.