Removal of heavy metal ions from wastewaters: A review

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.

Adsorption of heavy metals on conventional and nanostructured materials for wastewater treatment purposes: A review

Sorption of divalent metal ions from aqueous solution by carbon nanotubes: A review

Waste materials for activated carbon preparation and its use in aqueous-phase treatment: a review.

Removal of lead from aqueous solutions on palm shell activated carbon.

Study on palm shell activated carbon adsorption capacity to remove copper ions from aqueous solutions

Recent decades are characterized by incredible rapid technological development resulting in the introducing of various new chemicals, materials and processes with various complexities. This, in turn, is associated with release of increased amounts of pollutants into the environment and for this reason their efficient removal is required. Environmental monitoring results show that many pollutants in ground water are at the excess limit which raises concerns on currently employed wastewater treatments. This review summarizes the electrochemical technology used in wastewater treatment covering its advantages such as high removal efficiency, clean energy conversion, low environmental impact, easy operation and compact design. Significant enhancement of electrochemical methods such as electrocoagulation, electroflotation, electrooxidation, electroreduction and electrodisinfection is discussed and these technologies are combined with an advanced photovoltaic (PV) technology. Important design parameters to obtain the highest efficiency from this combined technology are discussed in details. Moreover, it is shown that the combination systems are capable to produce hydrogen gas at high efficiency which can be used as a supplementary source for green energy thus minimizing the entire process cost.

Prospective applications of renewable energy based electrochemical systems in wastewater treatment: A review

Removal of lead by solar-photovoltaic electrocoagulation using novel perforated zinc electrode

Electrodeposition of copper and lead on palm shell activated carbon in a flow-through electrolytic cell

Gulnaziya Issabayeva

Papers

Removal of lead from aqueous solutions on palm shell activated carbon.

Study on palm shell activated carbon adsorption capacity to remove copper ions from aqueous solutions

Prospective applications of renewable energy based electrochemical systems in wastewater treatment: A review

Removal of lead by solar-photovoltaic electrocoagulation using novel perforated zinc electrode

Electrodeposition of copper and lead on palm shell activated carbon in a flow-through electrolytic cell