Evaluation of advanced oxidative processes in biodiesel wastewater treatment

被引:24
作者
da Silva Brito, Gabriel Ferreira [1 ]
Oliveira, Rhaul [2 ,3 ,4 ]
Grisolia, Cesar Koppe [2 ]
Guirra, Layanne Souza [1 ]
Weber, Ingrid Tavora [1 ,5 ]
de Almeida, Fernanda Vasconcelos [1 ]
机构
[1] Univ Brasilia, Inst Quim, BR-70910900 Brasilia, DF, Brazil
[2] Univ Brasilia, Inst Ciencias Biol, Dept Genet & Morfol, Lab Genet Toxicol, BR-70910900 Brasilia, DF, Brazil
[3] Univ Estadual Campinas, UNICAMP, Fac Tecnol, BR-13484332 Limeira, SP, Brazil
[4] Univ Sao Paulo, Fac Ciencias Farmaceut, Programa Posgrad Toxicol & Anal Toxicol, BR-05508000 Sao Paulo, Brazil
[5] Univ Fed Pernambuco, CCEN, Programa Posgrad Ciencias Mat, Recife, PE, Brazil
关键词
Biodiesel wastewater; Advanced oxidative processes; Fenton; Photolysis; Ecotoxicity; Fish embryo acute toxicity; PHOTO-FENTON DEGRADATION; LIFE STAGE TOXICITY; COAGULATION-FLOCCULATION; DANIO-RERIO; ZEBRAFISH; EFFLUENT; PURIFICATION;
D O I
10.1016/j.jphotochem.2019.01.013
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In biodiesel production by alkaline transesterification, a large amount of wastewater containing a very high amount of organic matter is generated. In spite of this, biodiesel wastewater is a neglected residue, which very often does not receive the correct treatment. In this work, we have evaluated the potential of advanced oxidative processes (AOP) in biodiesel wastewater treatment. The efficacy of four AOP, namely Fenton, photo-Fenton, solar photo-Fenton and solar-photolysis, was tested measuring the total organic carbon removal from this residue. As well, the toxicity of the treated residue was investigated by fish embryo tests (FET). Photo-Fenton, solar photo-Fenton and solar photolysis led to similar organic load reduction, but solar photolysis (8 h of solar exposure) was considered the best treatment, due to the important organic load reduction reached (more than 92%) associated with an ease of operation and a 100% reduction in toxicity for Zebrafish embryos in the dilution range studied. In the best cases, approximately 6-8% of the organic content in biodiesel wastewater is recalcitrant.
引用
收藏
页码:85 / 90
页数:6
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