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题名: Implementation of UV-based advanced oxidation processes in algal medium recycling
作者: Wang, Wenxuan1, 2; Sha, Jun1, 3, 7; Lu, Zhiying1, 2, 3; Shao, Senlin4; Sun, Peizhe5; Hu, Qiang1, 3, 6; Zhang, Xuezhi1, 3
关键词: Algae ; AOPs ; Bioenergy ; Media recycling ; Pretreatment
刊名: SCIENCE OF THE TOTAL ENVIRONMENT
发表日期: 2018-09-01
DOI: 10.1016/j.scitotenv.2018.03.342
卷: 634, 页:243-250
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: Algae show great potential as sustainable feedstock for numerous bioproducts. However, large volume of water consumption during algal biomass production makes that the culture media recycling is a necessity due to economic and environmental concern. To avoid the negative effect of enriched organic matters in the harvested culture media, pre-treatment prior to medium replenishment and reuse is required. In this study, degradation of algenitic organic matters (AOM) in the culturemedia by UV-based photolysis processes (i.e., direct UV, UV/peroxydisulfate (PDS), UV/H2O2, and UV/NH2Cl) was explored. The results showed that UV, UV/PDS, UV/H2O2 and UV/NH2Cl caused a decrease of SUVA for 29.9%, 35.4%, 40.45%, and 22.6%, respectively, though the organic matter was almost notmineralized. Fluorescence excitation-emission matrix combined with parallel factor analysis indicated that UV/PDS and UV/H2O2 degraded 47.26%-56.31% of the fulvic-like and humic-like fractions in AOM. Powder activated carbon absorption and growth evaluation for the AOPs-treated media indicated that UV/PDS and UV/H2O2 processes not only could remove the growth inhibitors in the media, but were also beneficial to the algae growth. These results suggested that UV/PDS andUV/H2O2 could effectively degrade the hydrophobic components in AOM and converted the growth inhibition fraction of AOM in the recycled media into nutrient source for algal growth. Different from the general application of UV-based AOP in the wastewater treatment, this study provided an innovative idea about how to pre-treat AOM in the media recycling: utilization rather than removal, which was a more sustainable and environment-friendly technology. (C) 2018 Elsevier B.V. All rights reserved.
关键词[WOS]: NATURAL ORGANIC-MATTER ; UV/H2O2 ADVANCED OXIDATION ; PARALLEL FACTOR-ANALYSIS ; WATER-TREATMENT ; BIOFUEL PRODUCTION ; ACTIVATED CARBON ; AQUEOUS-SOLUTION ; DRINKING-WATER ; RATE CONSTANTS ; DEGRADATION
语种: 英语
项目资助者: National Nature Science Foundation of China(31672625 ; Chinese Postdoctoral Science Foundation(2016M602391) ; International Postdoctoral Exchange Fellowship of China(32OCPC2017) ; 21603263)
WOS记录号: WOS:000433153600027
ISSN号: 0048-9697
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/50889
Appears in Collections:藻类生物技术和生物能源研发中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Ctr Microalgal Biotechnol & Biofuels, Wuhan 430072, Hubei, Peoples R China
2.Duke Univ, Marine Lab, Nicholas Sch Environm, Beaufort, NC 28516 USA
3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
4.Wuhan Univ, Sch Civil Engn, Wuhan 430072, Hubei, Peoples R China
5.Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China
6.State Dev & Investment Corp, Microalgal Biotechnol & Biofuels Ctr, Sanhe 065200, Peoples R China
7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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