Coupling of Anodic Oxidation and Soil Remediation Processes: A Review

Author(s)

Barbosa Ferreira, Maiara ^[1] ; Sales Solano, Aline Maria ^[1] ; Vieira dos Santos, Elisama ^[1] ; Martinez-Huitle, Carlos A. ^[1] ; Ganiyu, Soliu O. ^[2]

Affiliation

^[1] Univ Fed Rio Grande do Norte, Inst Quim, BR-59078970 Natal, RN - Brazil

^[2] Univ Alberta, Dept Civil & Environm Engn, Edmonton, AB T6G 2W2 - Canada

• Document type: Review article
• Source: MATERIALS; v. 13, n. 19 OCT 2020.
• Web of Science Citations: 3

Abstract

In recent years, due to industrial modernization and agricultural mechanization, several environmental consequences have been observed, which make sustainable development difficult. Soil, as an important component of ecosystem and a key resource for the survival of human and animals, has been under constant contamination from different human activities. Contaminated soils and sites require remediation not only because of the hazardous threat it possess to the environment but also due to the shortage of fresh land for both agriculture and urbanization. Combined or coupled remediation technologies are one of the efficient processes for the treatment of contaminated soils. In these technologies, two or more soil remediation techniques are applied simultaneously or sequentially, in which one technique complements the other, making the treatment very efficient. Coupling anodic oxidation (AO) and soil remediation for the treatment of soil contaminated with organics has been studied via two configurations: (i) soil remediation, ex situ AO, where AO is used as a post-treatment stage for the treatment of effluents from soil remediation process and (ii) soil remediation, in situ AO, where both processes are applied simultaneously. The former is the most widely investigated configuration of the combined processes, while the latter is less common due to the greater diffusion dependency of AO as an electrode process. In this review, the concept of soil washing (SW)/soil flushing (SF) and electrokinetic as soil remediation techniques are briefly explained followed by a discussion of different configurations of combined AO and soil remediation. (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
• FAPESP's process: 19/13113-4 - Photo (electro) catalysis and photoelectro-fenton processes for emerging contaminants removal from industrial wastewater
• Grantee: Maria Valnice Boldrin
• Support Opportunities: Regular Research Grants