文献类型：期刊文献

英文题名：High Flocculation of Coal Washing Wastewater Using a Novel Bioflocculant from Isaria cicadae GZU6722

作者：Zou, Xiao Sun, Jialong Li, Juan Jia, Yanlong Xiao, Tangfu Meng, Fanli Wang, Maosheng Ning, Zengping

第一作者：Zou, Xiao

通信作者：Sun, JL[1]|[144401b0f946cab9b9543]孙嘉龙;

机构：[1]Guizhou Univ, Inst Fungal Resources, Guiyang, Peoples R China;[2]Guizhou Inst Technol, Sch Resources & Environm Engn, Guiyang, Peoples R China;[3]Guangzhou Univ, Minist Educ, Key Lab Water Qual & Conservat Pearl River Delta, Sch Environm Sci & Engn, Guangzhou, Peoples R China;[4]Guizhou Acad Environm Sci & Design, Guiyang, Peoples R China;[5]Guizhou Inst Technol, Sch Food & Pharmaceut Engn, Guiyang, Peoples R China;[6]Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang, Guizhou, Peoples R China

第一机构：Guizhou Univ, Inst Fungal Resources, Guiyang, Peoples R China

通信机构：corresponding author), Guizhou Inst Technol, Sch Resources & Environm Engn, Guiyang, Peoples R China.|贵州理工学院资源与环境工程学院;贵州理工学院;

年份：2020

卷号：69

期号：1

起止页码：55-64

外文期刊名：POLISH JOURNAL OF MICROBIOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000521107100006)】；

基金：This work was funded by National Natural Science Foundation of China (31360031, 41563010, 41563015), Major Program for Innovative Research Groups of from Guizhou Provincial Department of Education (Qian-KY[2016]045), Guizhou Provincial Science and Technology Major Project (QianKeHe-[2016]3022-07), Guizhou Provincial Key Social Development Program (QianSY[2013]3143), Guizhou Provincial Science and Technology Foundation (2014J2079), Guizhou Provincial Science and Technology Research Foundation for Young Talents ([2017]5617) and Research Foundation for Advanced Scholars of Guizhou Institute of Technology (XJGC-20140605, 20140606).

语种：英文

外文关键词：coal washing wastewater; Isaria cicadae; bioflocculant; APAM

摘要：Chanhua (Isaria cicadae) was known as a rare entomogenous fungus with various pharmacological activities since a long time ago in China, which has attracted considerable attention. However, less knowledge was maintained about its products as potential bioflocculants. In this work, a bioflocculant IC-1 produced by Isaria cicadae GZU6722, consisted mainly of protein (4%) and polysaccharides including neutral sugars (52.75%) and galacturonic acid (38.14%), was characterized. It presented high efficiency in flocculating coal washing wastewater, and the flocculating efficiency could reach 91.81% by addition of 24 mg l(-1) IC-1 compared to the addition of 60 mg l(-1) APAM (anionic polyacrylamide) under the same treatment conditions. he highest flocculating efficiency reached 95.8% in the presence of 2% CaCl2. Compared to APAM, the flocculating efficiency of coal washing wastewater by IC-1 varied little with the increasing dosage. Although the flocs in the APAM-assisted sediment were larger than that in the IC-1-assisted sediment after 1 min of sedimentation, few flocs were still found in the supernatant of both treated samples after 10 min of sedimentation. More interestingly, it was observed under the microscope that the flocs in the IC-1-assisted sediments were more compact than that in the APAM-assisted sediments, suggesting that polymer bridging might take place after IC-1 was added into the coal washing wastewater. The evaluation of costs indicated that the use of IC-1 to treat the coal-washing wastewater may be an economical and feasible way to avoid the extra cost for post-treatment of conventional flocculants.