| Full text | |
| Author(s): |
Garcia-Segura, Sergi
[1]
;
Eiband, Maria Maesia S. G.
[1]
;
de Melo, Jailson Vieira
[1]
;
Martinez-Huitle, Carlos Alberto
[1, 2]
Total Authors: 4
|
| Affiliation: | [1] Univ Fed Rio Grande do Norte, Inst Chem, LEAA, BR-59078970 Natal, RN - Brazil
[2] Unesp, Natl Inst Alternat Technol Detect Toxicol Evaluat, Inst Chem, POB 355, BR-14800900 Araraquara, SP - Brazil
Total Affiliations: 2
|
| Document type: | Review article |
| Source: | JOURNAL OF ELECTROANALYTICAL CHEMISTRY; v. 801, p. 267-299, SEP 15 2017. |
| Web of Science Citations: | 93 |
| Abstract | |
The electrocoagulation (EC) process is an electrochemical means of introducing coagulants and removing suspended solids, colloidal material, and metals, as well as other dissolved solids from water and wastewaters. EC process has been successfully employed in removing pollutants, pesticides, and radionuclides. This process also removes harmful microorganisms. More often during EC operation, direct current is applied and electrode plates are sacrificed (dissolved into solution). The electrodissolution causes an increased metal concentration in the solution that finally precipitates as oxides and hydroxides. Due to the process design and low cost material, the EC process is widely accepted over other physicochemical processes. In this frame, this paper presents a general review of efficient EC technologies developed to remove organic and inorganic matter from wastewaters for environmental protection. Fundamentals and main applications of EC as well as progress of emerging EC treatments are reported. The influence of iron or aluminum anode on depollution of synthetic or real effluents is explained. The advantages of EC mechanisms with Al and Fe electrodes are extensively discussed. There are presented the advanced EC processes with in situ generation of hydroxyl radical. The importance of the operating parameters for efficient application of the EC process as well as the combination of this electrochemical technology with electroanalysis techniques and other technologies are commented. (AU) | |
| FAPESP's process: | 14/50945-4 - INCT 2014: National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies |
| Grantee: | Maria Valnice Boldrin |
| Support Opportunities: | Research Projects - Thematic Grants |