Kinetic Modeling of Phenol adsorption on Azadirachta indica as a Potential Adsorbent (original) (raw)
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A review of phenol removal from wastewater by adsorption
2020
Department of Civil Engineering, Indian Institute of Engineering Science and Technology, Shibpur, Howrah-711 103,<br> West Bengal, India<br> E-mail: sayak01011997@gmail.com<br> Manuscript received online 09 December 2020, accepted 29 December 2020 Phenolic compounds are highly toxic to humans, animals and aquatic ecosystems. Industrial effluents contaminated with<br> phenols pollute surface and ground water resources if not managed and treated properly before discharge. Conventional physicochemical<br> treatment processes like adsorption, chemical and electrochemical oxidation, distillation etc. provide high removal<br> efficiencies as compared to advanced treatments like ozonation, UV treatment and Fenton process, which have high energy<br> costs. Thus, over the years physicochemical processes have accentuated various researchers in the field of phenolics treatment.<br> This review summarizes the development of different adsorption te...
Activated carbon derived from rattan sawdust (ACR) was evaluated for its ability to remove phenol from an aqueous solution in a batch process. Equilibrium studies were conducted in the range of 25–200 mg/L initial phenol concentrations, 3–10 solution pH and at temperature of 30 • C. The experimental data were analyzed by the Langmuir, Freundlich, Temkin and Dubinin–Radushkevich isotherm models. Equilibrium data fitted well to the Langmuir model with a maximum adsorption capacity of 149.25 mg/g. The dimensionless separation factor R L revealed the favorable nature of the isotherm of the phenol-activated carbon system. The pseudo-second-order kinetic model best described the adsorption process. The results proved that the prepared activated carbon was an effective adsorbent for removal of phenol from aqueous solution.