Evaluation of the toxicity of textile effluent treated by electrocoagulation

被引：7

作者：

Martins, Jessica Elen Costa Alexandre ^{[1
]}

Neto, Eliezer Fares Abdala ^{[1
]}

Ribeiro, Jefferson Pereira ^{[1
]}

de Lima, Ari Clecius Alves ^{[2
]}

de Souza, Francisco Wagner ^{[3
]}

de Oliveira, Andre Gadelha ^{[4
]}

Vidal, Carla Bastos ^{[5
]}

do Nascimento, Ronaldo Ferreira ^{[1
]}

机构：

[1] Univ Fed Ceara, Dept Analyt Chem & Phys Chem, Humberto Monte S-N Campus Pici,Bloco 940, BR-60451970 Fortaleza, CE, Brazil

[2] Ceara Ind Technol Nucleus Fdn, Prof Romulo Proenca St, BR-60440552 Fortaleza, CE, Brazil

[3] Fed Inst Educ Sci & Technol Ceara, Campus Caucaia,Francisco Rocha Martins S-N, Caucaia, CE, Brazil

[4] Univ Fortaleza, Ctr Technol Sci, Ave Washington Soares 1321, BR-60881905 Fortaleza, CE, Brazil

[5] Univ Tecnol Fed Parana, Dept Chem & Biol, Deputado Heitor Alencar Furtado St,Five Thousand E, BR-81280340 Curitiba, PR, Brazil

来源：

WATER PRACTICE AND TECHNOLOGY | 2023年 / 18卷 / 04期

关键词：

current density; dye removal; electrochemical process; electrocoagulation residue; germination index; Lactuca sativa toxicity; BOX-BEHNKEN DESIGN; WASTE-WATER; REMOVAL EFFICIENCY; AQUEOUS-SOLUTIONS; OPTIMIZATION; CONNECTIONS; RESIDUES; DYES;

D O I：

10.2166/wpt.2023.049

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

Textile effluents are complex, making it difficult to choose an effective treatment. The textile effluent toxicity in Lactuca sativa after pulsed current (PC) electrocoagulation (EC) was evaluated in this study. The EC was performed using 304 stainless steel electrodes in batch mode. Parameters monitored included pH, temperature, color, and turbidity. Additionally, the process residue was subjected to energy-dispersive X-ray fluorescence (XFR) to determine the elements present. The process achieved proportional color and turbidity removal ranging from 97 to 99% and from 74 to 85%, respectively. Chemical oxygen demand (COD) and total nitrogen removal were 81 and 49%, respectively, in a 50 min time-lapse. The process generated approximately 1.7 kg of solid residue/m(3) treated effluent. The XFR results revealed the presence, mainly, of Fe, Cr, and Ni ions in the residue, as well as chlorine. The germination index (GI) and relative growth values showed that EC reduced effluent toxicity slightly, indicating the need for complementary treatment.

引用

页码：930 / 946

页数：17

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