Prospects on integrated electrokinetic systems for decontamination of soil polluted with organic contaminants

Fdez-Sanromán, Antía; Pazos, Marta; Rosales, Emílio

doi:10.1016/j.coelec.2021.100692

Cited by 12 publications

(6 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, the indiscriminate use of raw materials, as well as industry itself, has generated numerous problems in terms of environmental contamination of soils and water bodies [1,2]. Many different types of highly toxic compounds, known as emerging pollutants, such as pesticides from the agri-food industry, persistent organic pollutants, food additives, pharmaceuticals (human and animal antibiotics, analgesics, chemotherapeutic agents, anxiolytics, etc.)…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous Advanced Oxidation Processes: Current Approaches for Wastewater Treatment

2022

Self Cite

View full text Add to dashboard Cite

Nowadays, water pollution is one of the most dangerous environmental problems in the world. The presence of the so-called emerging pollutants in the different water bodies, impossible to eliminate through conventional biological and physical treatments used in wastewater treatment plants due to their persistent and recalcitrant nature, means that pollution continues growing throughout the world. The presence of these emerging pollutants involves serious risks to human and animal health for aquatic and terrestrial organisms. Therefore, in recent years, advanced oxidation processes (AOPs) have been postulated as a viable, innovative and efficient technology for the elimination of these types of compounds from water bodies. The oxidation/reduction reactions triggered in most of these processes require a suitable catalyst. The most recent research focuses on the use and development of different types of heterogeneous catalysts, which are capable of overcoming some of the operational limitations of homogeneous processes such as the generation of metallic sludge, difficult separation of treated water and narrow working pH. This review details the current advances in the field of heterogeneous AOPs, Fenton processes and photocatalysts for the removal of different types of emerging pollutants.

show abstract

Section: Introductionmentioning

confidence: 99%

Heterogeneous Advanced Oxidation Processes: Current Approaches for Wastewater Treatment

2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…Electrokinetic remediation methods flow electrical currents into the soil so contaminants can move from soil pores through electromigration, electroosmosis, and electrophoresis mechanisms. Electrokinetic remediation technology has always been combined with other technologies, such as soil rinse and chemical oxidation, to improve remediation performance [3,14,15].…”

Section: Introductionmentioning

confidence: 99%

Bioavailability enhancement of petroleum-contaminated soil by electrokinetic remediation

Madonna,

Effendi,

Kardena

et al. 2024

E3S Web of Conf.

View full text Add to dashboard Cite

The Electro kinetic Remediation Technology (EKR) is recognized as the most potential remediation technology for soils with low permeability, like clay soil characteristics. Electrokinetic treatment could increase the bioavailability of contaminants in bioremediation petroleum-contaminated soil. The study, “Bioavailability enhancement of petroleum contaminated soil by electrokinetic remediation,” is experimental research in a laboratory to improve the bioavailability of petroleum hydrocarbons on clay during bioremediation with initial treatment using electrokinetic remediation techniques, finding optimum electrokinetic operating conditions of remediations, and analyzing the mechanism of remediation process in contaminated soil. Bioavailability enhancement was studied for 35 days. Polluted soil was treated with an electrokinetic box test (17cm×12cm×10cm), and DC power was used for 48 hours. Total Petroleum Hydrocarbon (TPH) concentration was determined by gravimetric methods. The results showed that the characteristics of the soil samples were dominated by 49.31% clay. The initial concentration of TPH in polluted soil is 3.7%. The electrokinetic applications during 48 hours and followed by bioremediation for 35 days those processes removed TPH up to 80.74 % (from 33780.66 mg HC (kg dry w)-1 to 6506.155176 mg HC (kg dry w)-1. There is an increase in bioavailability indicated by the rise in bacterial populations and an increase in biodegradation after electrokinetic remediation. With this approach, bioavailability has been increased by 70.18%. Bio-electrokinetic remediation is the recommended method for polluted clay soils with low bioavailability.

show abstract

“…Consequently, these processes are an attractive alternative for the treatment of contaminated soil with organic pollutants, and in recent years a growing number of papers have been published regarding their single or combined use. Thus, AOPs were combined with biological, chemical, electrokinetic processes, and between themselves to achieve a high degradation efficiency, because combining one or more remediation methods enables a synergy that exploits the strengths and minimizes the disadvantages of individual technologies [12].…”

Section: Introductionmentioning

confidence: 99%

Recent Developments in Advanced Oxidation Processes for Organics-Polluted Soil Reclamation

et al. 2022

Self Cite

View full text Add to dashboard Cite

Soil pollution has become a substantial environmental problem which is amplified by overpopulation in different regions. In this review, the state of the art regarding the use of Advanced Oxidation Processes (AOPs) for soil remediation is presented. This review aims to provide an outline of recent technologies developed for the decontamination of polluted soils by using AOPs. Depending on the decontamination process, these techniques have been presented in three categories: the Fenton process, sulfate radicals process, and coupled processes. The review presents the achievements of, and includes some reflections on, the status of these emerging technologies, the mechanisms, and influential factors. At the present, more investigation and development actions are still desirable to bring them to real full-scale implementation.

show abstract

Prospects on integrated electrokinetic systems for decontamination of soil polluted with organic contaminants

Cited by 12 publications

References 45 publications

Heterogeneous Advanced Oxidation Processes: Current Approaches for Wastewater Treatment

Heterogeneous Advanced Oxidation Processes: Current Approaches for Wastewater Treatment

Bioavailability enhancement of petroleum-contaminated soil by electrokinetic remediation

Recent Developments in Advanced Oxidation Processes for Organics-Polluted Soil Reclamation

Contact Info

Product

Resources

About