Soil pollution is one of the concern issues in the Asia region. Soil acts as a shelter for underground microorganisms and provides nutrients for plants. Most of the organic contaminants are sourced from agriculture and industrial areas. Organic contaminants which are volatilized and immiscible lead to air and water pollution. Electrokinetic remediation is a technology that has been developed for soil remediation since a few decades ago. It is not fully developed and is still under investigation. Electrokinetic remediation is being applied to improve the removal efficiency of organic contaminants which exist in low hydraulic conductivity of soil or fine-grained soil. Generally, a low direct current, 1DCV/cm is applied. Facilitating agents including surfactant and co-solvent combined with electrokinetic remediation eliminated more organic contaminants compared with electrokinetic remediation alone. Electrokinetic remediation with the addition of bioremediation or phytoremediation process manipulates the transportation of organic contaminants in soil to increase the efficiency of remediation technologies. Electrokinetic remediation is recommended due to its flexibility, cost-effectiveness, and safety. One of the drawbacks is low effectiveness in removing non-polar organic pollutants due to weak desorption capacity and poor solubility in water. Co-solvents and surfactants can be introduced as alternatives to enhancing the solubility of non-polar pollutants and reducing surface tension, which improves their mobility within the soil matrix. These facilitating agents help improve the overall effectiveness of electrokinetic remediation, particularly for challenging contaminants.

Human decontamination

10.53623/idwm.v4i1.442

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Citations (1)

Degradation of phenol by ball-milled activated carbon (ACBM) activated dual oxidant (persulfate/calcium peroxide) system: Effect of preadsorption and sequential injection

Chemosphere (2022)

Md Abdullah Al Masud Won Sik Shin Do-Gun Kim

Persulfate

Peroxide

Degradation

10.1016/j.chemosphere.2022.137120

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Citations (23)

Potassium nickel hexacyanoferrate–polyacrylonitrile composite for removing cobalt, strontium, and cesium from radioactive laundry wastewater

CLEAN - Soil Air Water (2023)

Ardie Septian Md Abdullah Al Masud Won Sik Shin

Abstract The applicability of potassium nickel hexacyanoferrate–polyacrylonitrile (KNiFC–PAN) for the sorption of Co 2+ , Sr 2+ , and Cs + from radioactive laundry wastewater generated in nuclear power plants was investigated. Competitive sorption of Co 2+ , Sr 2+ , and Cs + onto KNiFC–PAN was studied for single, binary, and ternary solutions. The Langmuir, Freundlich, Kargi–Ozmıhci, Koble–Corrigan, and Langmuir–Freundlich models predicted the single‐sorption data ( R 2 ≥ 0.942, sum of squared error ≤ 0.105). The sorption isotherms were nonlinearly favorable (Freundlich coefficient, N F = 0.288–0.842). According to the Langmuir, Freundlich, Kargi–Ozmıhci, Koble–Corrigan, and Langmuir–Freundlich models, at pH 5 ( C 0 = 20 mM), KNiFC−PAN exhibited the highest maximum sorption capacity ( q mL ) for Cs + among the investigated cations, wherein the primary mechanism was physical sorption. The competition between the metal ions in the binary and ternary systems reduced the respective sorption capacities. Binary and ternary sorption models, such as the ideal adsorbed solution theory (IAST) model coupled with Freundlich (IAST–Freundlich), IAST–Langmuir, and IAST–Langmuir–Freundlich models, were fitted to the experimental data; among these, the IAST–Freundlich model was the most accurate for the binary and ternary systems. The presence of sodium 4‐n‐octylbenzenesulfonate and dodecylbenzene–sulfonic acid sodium salt as anionic surfactants strongly affected the sorption capacity on KNiFC–PAN owing to increased distribution coefficients ( K d ) of Cs + , Sr 2+ , and Co 2+ . Thus, KNiFC–PAN is promising for removing Cs + , Sr 2+ , and Co 2+ from radioactive laundry wastewater.

Polyacrylonitrile

10.1002/clen.202300057

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A critical review of sustainable pesticide remediation in contaminated sites: Research challenges and mechanistic insights

Environmental Pollution (2023)

Aniruddha Sarker Won Sik Shin Md Abdullah Al Masud Rakhi Nandi Tofazzal Islam

Human decontamination

10.1016/j.envpol.2023.122940

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Citations (21)

Evaluating the potential of wax impregnated reactive components for long-term acenaphthene removal