Effects of hydraulic retention time, co-substrate and nitrogen source on laundry wastewater anionic surfactant degradation in fluidized bed reactors

被引：40
作者：
Freire Andrade, Marcus Vinicius [1 ]
Sakamoto, Isabel Kimiko [1 ]
Corbi, Juliano Jose [1 ]
Silva, Edson Luiz [2 ]
Amancio Varesche, Maria Bernadete [1 ]
机构：
[1] Univ Sao Paulo, Sch Engn Sao Carlos, Dept Hydraul & Sanitat, Trabalhador Sao Carlense Ave 400, BR-13566590 Sao Carlos, SP, Brazil
[2] Univ Fed Sao Carlos, Dept Chem Engn, Rod Washington Luiz,Km 235,SP 310, BR-13565905 Sao Carlos, SP, Brazil
来源：
BIORESOURCE TECHNOLOGY | 2017年 / 224卷
基金：
巴西圣保罗研究基金会;
关键词：
Ethanol; LAS degradation; Nitrate; Microbial diversity; Toxicity; LINEAR ALKYLBENZENE SULFONATE; MICROBIAL COMMUNITY; ANAEROBIC DEGRADATION; BIODEGRADATION; REMOVAL; DIVERSITY; SULFATE; ETHANOL; RNA; GROUNDWATER;
D O I：
10.1016/j.biortech.2016.11.001
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The aim of this study was to evaluate the influence of hydraulic retention time (HRT) on linear alkylbenzene sulfonate (LAS) removal in fluidized bed reactors (FBRs). FBR1 (HRT of 8 h) and FBR2 (HRT of 12 h) were fed laundry wastewater with 18.6 +/- 4.1 to 27.1 +/- 5.6 mg/L of LAS in the following conditions: ethanol and nitrate addition (Phases I, II and III), nitrate (Phase IV), ethanol (Phase V) and laundry wastewater (Phase VI). LAS removal was 93 +/- 12% (FBR1) and 99 +/- 2% (FBR2). In FBR1, nitrate influenced significantly on LAS removal (99 +/- 3% - Phase IV) compared to the phase without nitrate (90 +/- 15% - Phase V). In FBR1 the absence of ethanol was more favourable for LAS removal (99 +/- 3% - Phase IV) compared to ethanol addition (87 +/- 16% - Phase II). In FBR2, 99 +/- 2% LAS removal was found up to 436 days. By microbial characterization were identified bacteria as Acinetobacter, Dechloromonas, Pseudomonas and Zoogloea. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：246 / 254
页数：9
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