Traditional physicochemical and biological techniques, as well as advanced oxidation processes (AOPs), are often inadequate, ineffective, or expensive for industrial water reclamation. Within this context, the electrochemical technologies have found a niche where they can become dominant in the near future, especially for the abatement of biorefractory substances. In this critical review, some of the most promising electrochemical tools for the treatment of wastewater contaminated by organic pollutants are discussed in detail with the following goals: (1) to present the fundamental aspects of the selected processes; (2) to discuss the effect of both the main operating parameters and the reactor design on their performance; (3) to critically evaluate their advantages and disadvantages; and (4) to forecast the prospect of their utilization on an applicable scale by identifying the key points to be further investigated. The review is focused on the direct electrochemical oxidation, the indirect electrochemical oxidation mediated by electrogenerated active chlorine, and the coupling between anodic and cathodic processes. The last part of the review is devoted to the critical assessment of the reactors that can be used to put these technologies into practice.

Single and Coupled Electrochemical Processes and Reactors for the Abatement of Organic Water Pollutants: A Critical Review.

Development of Biochar-Based Functional Materials: Toward a Sustainable Platform Carbon Material

Engineered/designer biochar for contaminant removal/immobilization from soil and water: Potential and implication of biochar modification

Heavy metals like arsenic, copper, cadmium, chromium, nickel, zinc, lead, and mercury are major pollutants of fresh water reservoirs because of their toxic, non-biodegradable, and persistent nature. The industrial growth is the major source of heavy metals introducing such pollutants into different segments of the environment including air, water, soil, and biosphere. Heavy metals are easily absorbed by fishes and vegetables due to their high solubility in the aquatic environments. Hence, they may accumulate in the human body by means of the food chain. Various methods have been developed and used for water and wastewater treatment to decrease heavy metal concentrations. These technologies include membrane filtration, ion-exchange, adsorption, chemical precipitation, nanotechnology treatments, electrochemical and advanced oxidation processes. In this review, the methods as well as their mechanisms and efficiency are discussed.

Removal of Heavy Metals from Industrial Wastewaters: A Review

Recent advances for dyes removal using novel adsorbents: A review

Electrocoagulation for the treatment of textile industry effluent--a review

Risk analysis of pyrolyzed biochar made from paper mill effluent treatment plant sludge for bioavailability and eco-toxicity of heavy metals

Utilization of sludge based adsorbents for the removal of various pollutants: A review

Synthesis of the magnetic biochar composites for use as an adsorbent for the removal of pentachlorophenol from the effluent

Catalytic ozonation for the treatment of synthetic and industrial effluents - Application of mesoporous materials: A review.

Anil K. Saroha

Papers

Electrocoagulation for the treatment of textile industry effluent--a review

Risk analysis of pyrolyzed biochar made from paper mill effluent treatment plant sludge for bioavailability and eco-toxicity of heavy metals

Utilization of sludge based adsorbents for the removal of various pollutants: A review

Synthesis of the magnetic biochar composites for use as an adsorbent for the removal of pentachlorophenol from the effluent

Catalytic ozonation for the treatment of synthetic and industrial effluents - Application of mesoporous materials: A review.