Dye removal from water and wastewater by nanosized metal oxides - modified activated carbon: a review on recent researches

Abstract

The conventional water and wastewater treatment methods are unable to provide up-to-data organized standards for drinking water and discharging effluents into natural ecosystems. Therefore, developing advanced and cost-effective methods to achieve published standards for water and wastewater and population needs are nowadays necessity. The important parts of this article are providing literature information about dyes and their effects on the environment and human health, adsorption properties and mechanism, adsorbent characteristics, and recent information on various aspects of modified activated carbons with nanosized metal oxides (AC-NMOs) in the removal of dyes. This review also summarized the effect of main environmental and operational parameters such as adsorbent dosage, pH, initial dye concentration, contact time, and temperature on the dye adsorption using AC-NMOs. Furthermore, the applied isotherm and kinetic models have been discussed.

Factors Affecting Synthetic Dye Adsorption; Desorption Studies: A Review of Results from the Last Five Years (2017–2021)

“…A wide range of review articles [ 93 , 111 , 112 , 113 , 114 , 115 , 116 , 117 , 118 , 119 , 120 , 121 , 122 ] discuss the use, classification, effectiveness and properties of different adsorbents as they are some of the key influencing factors of the process. The characteristics through the advantages and limitations of most adsorbents are also reviewed.…”

Sustainable Removal of Contaminants by Biopolymers: A Novel Approach for Wastewater Treatment. Current State and Future Perspectives

“…[16]. On the other hand, taking into account environmental and human health problems related to the presence of dyes in wastewater, which is also correlated to transmission modification of sunlight into water, low cost adsorbents such as banana trunk, coconut shell, corn stalks, grape wood, Jerusalem artichoke stalk, mango peels, activated carbon from Nasturtium microphyllum (AC-Nm), orange peels, oil palm fruit fiber, pineapple peels, rice husk, rice straw, tea waste, and walnut shell have been also proposed [17]. In this context, physicochemical characteristics of the proposed solutions, morphological characteristics such as porosity and internal pore distribution, and surface area and nature (hydrophobic and hydrophilic character of the surface), as well as the eventual presence of functional groups, should properly tune dye removal efficiency [17].…”

PEG/Sodium Tripolyphosphate-Modified Chitosan/Activated Carbon Membrane for Rhodamine B Removal

“…Rhodamine B (RhB) is a widely used organic colorant in textile and dyestuff industries. 7 However, it is highly toxic with potential carcinogenic and mutagenic properties caused by benzidine and other aromatic compounds. 8 Furthermore, RhB interferes with the natural purification process for aquatic life through impeding light penetration and photosynthesis.…”

“…With the development of the textile and dyestuff industries, the wastewater effluent without adequate treatment can cause significant environmental problems. , The wastewater containing harmful residual dyes and other auxiliary chemical additives causes irreversible damage to both living species and the aqueous environment. , For instance, the aquatic environment becomes unbalanced due to excessive proliferation of algae and suffocation of aquatic organisms under the influence of the dyeing effluent in a watercourse. , Therefore, efficient treatments to the residual pollutants in the wastewater, especially textile dyeing, must be performed before discharge. Rhodamine B (RhB) is a widely used organic colorant in textile and dyestuff industries . However, it is highly toxic with potential carcinogenic and mutagenic properties caused by benzidine and other aromatic compounds .…”