Enhancing the auto-flocculation of photosynthetic bacteria to realize biomass recovery in brewery wastewater treatment
文献类型：期刊
作者：Lu, Haifeng[1]
机构：[1]China Agr Univ, Coll Water Resource & Civil Engn, Beijing, Peoples R China.,Minist Agr, Key Lab Agr Engn Struct & Environm, Beijing, Peoples R China.,Beijing Engn Res Ctr Anim Hlth Environm, Beijing, Peoples R China.;
[2]Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin, Heilongjiang, Peoples R China.;
[3]Renmin Univ China, Sch Environm & Nat Resources, Beijing 100872, Peoples R China.;
[4]China Agr Univ, Coll Water Resource & Civil Engn, Beijing, Peoples R China.,Minist Agr, Key Lab Agr Engn Struct & Environm, Beijing, Peoples R China.,Beijing Engn Res Ctr Anim Hlth Environm, Beijing, Peoples R China.;
[5]China Agr Univ, Coll Water Resource & Civil Engn, Beijing, Peoples R China.,Minist Agr, Key Lab Agr Engn Struct & Environm, Beijing, Peoples R China.,Beijing Engn Res Ctr Anim Hlth Environm, Beijing, Peoples R China.;Univ Illinois, Dept Agr & Biol Engn, Urbana, IL USA.;
[6]China Agr Univ, Coll Water Resource & Civil Engn, Beijing, Peoples R China.,Minist Agr, Key Lab Agr Engn Struct & Environm, Beijing, Peoples R China.,Beijing Engn Res Ctr Anim Hlth Environm, Beijing, Peoples R China.;
通讯作者：Zhang, GM (reprint author), Renmin Univ China, Sch Environm & Nat Resources, Beijing 100872, Peoples R China.
期刊名称：ENVIRONMENTAL TECHNOLOGY影响因子和分区
年：2019
卷：40
期：16
页码：2147-2156
收录情况：SCI(E)(WOS:000470328800011)
ISSN：0959-3330
关键词：PSB; auto-flocculation; biomass recovery; extracellular polymeric substances; protein; polysaccharides ratio
所属部门：环境学院
摘要：Photosynthetic bacteria (PSB) wastewater treatment technology can simultaneously realize wastewater purification and biomass production. The produced biomass contains high value-added products, which can be used in medical and agricultural industry. However, because of the small size and high electronegativity, PSB are hard to be collected from wastewater, which hampers the commercialization of PSB-based industrial processes. Auto-flocculation is a low cost, energy saving, non-toxic biomass coll ...More
Photosynthetic bacteria (PSB) wastewater treatment technology can simultaneously realize wastewater purification and biomass production. The produced biomass contains high value-added products, which can be used in medical and agricultural industry. However, because of the small size and high electronegativity, PSB are hard to be collected from wastewater, which hampers the commercialization of PSB-based industrial processes. Auto-flocculation is a low cost, energy saving, non-toxic biomass collection method for microbiology. In this work, the influence factors with their optimal levels and mechanism for enhancing the auto-flocculation of PSB were investigated in pure cultivation medium. Then PSB auto-flocculation performance in real brewery wastewater was probed. Results showed that Na+ concentration, pH and light intensity were three crucial factors except the initial inoculum sizes and temperature. In the pure medium cultivation system, the optimal condition for PSB auto-flocculation was as follows: pH was 9.5, inoculum size was 420 mg l(-1), Na+ concentration was 0.067 mol l(-1), light intensity was 5000 lux, temperature was 30 degrees C. Under the optimal condition, the auto-flocculation ratio and biomass recovery reached 85.0% and 1488 mg l(-1), which improved by 1.67-fold and 2.14-fold compared with the PSB enrichment cultivation conditions, respectively. Mechanism analysis showed that the protein/polysaccharides ratio and absolute Zeta potential value had a liner relationship. For the brewery wastewater treatment, under the above optimal condition, the chemical oxygen demand removal reached 94.3% with the auto-flocculation ratio and biomass recovery of 89.6% and 1510 mg l(-1), which increased 2.75-fold and 2.77-fold, respectively. ...Hide
DOI：10.1080/09593330.2018.1439107
百度学术：Enhancing the auto-flocculation of photosynthetic bacteria to realize biomass recovery in brewery wastewater treatment
语言：外文
被引频次：2
基金：National Natural Science Foundation of ChinaNational Natural Science Foundation of China [51278489, 51308535]
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