An overview of dye removal via activated carbon adsorption process

Abstract

Dyes are an important class of pollutants and can even be identified by the human eyes. Disposal of dyes in precious water resources must be avoided especially those that are not easily biodegradable, however, and for that various treatment technologies are in use. Among various methods adsorption occupies a prominent place in dye removal. The growing demand for efficient and low-cost treatment methods and the importance of adsorption has given rise to agricultural waste. This review highlights and provides an overview of these activated carbons prepared by non-woody and woody materials and their application for dyes removal. From a comprehensive literature review, it was found that many researchers used non-woody material as activated carbons to removal dye contaminants.

The environmental applications of activated carbon/zeolite composite materials

“…For the past two decades, the enthusiasm of huge waste production and the terminology of industrial effluents exposure have been one of the rapidly advancing dilemmas, which have attracted greatest public considerations and spectacular attention towards the recovery of contamination resources [84][85][86]. Arising from the steep development of the world's giant manufacturing factories and transitions to the clean energy policy, numerous mitigating tactics and imperative technologies have drastically been addressed and confronted to utilize activated carbons and zeolite (or its integrated technologies) contemplated mainly for toxic waste treatment, in accruing worldwide environmental benefit and shaping the national economy.…”

Removal of malathion from polluted water by adsorption onto chemically activated carbons produced from coffee grounds

“…Indeed, higher the specific surface area of the adsorbent material used more efficient is the adsorption removal process. Comparatively to other adsorbents, activated carbons are more efficient [12] but their high commercial cost and their difficult regeneration led the investigators to look for less expensive alternatives [13,14].…”

Treatment of colored textile wastewater containing acid dye using electrocoagulation process

“…Color is the first pollutant that can be detected in wastewater. Thus, a little amount of dye in water is highly visible [1][2][3][4][5][6][7][8][9]. In addition, discharge of colored wastewater to the environment due to being toxic and mutagenic and potential of bioaccumulation of many dyes and by-products of them is undesirable for living organisms [10,11].…”