Effect of chlorine substitution on the removal of phenols by activated carbon | Zendy

K. Suhas | Zendy; Randhir Singh | Zendy; Alka Harit | Zendy

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Effect of chlorine substitution on the removal of phenols by activated carbon

Author(s) -

K. Suhas,

Randhir Singh,

Alka Harit

Publication year - 2017

Publication title -

environment conservation journal

Language(s) - English

Resource type - Journals

eISSN - 2278-5124

pISSN - 0972-3099

DOI - 10.36953/ecj.2017.181223

Subject(s) - substitution (logic) , activated carbon , chlorine , phenols , chemistry , carbon fibers , environmental chemistry , waste management , organic chemistry , materials science , computer science , engineering , adsorption , programming language , composite number , composite material

A comparison of the removal of substituted phenols (2-chlorophenol, 4-chlorophenol and 2,4-dichlorophenol) with phenol using adsorption process on activated carbon has been investigated. The adsorption data was modeled using Langmuir and Freundlich equations and the Langmuir model was found to be the best fit. The removal of phenols by activated carbon followed a trend based on number of chlorine substitution with order: phenol < 2-chlorophenol < 4-chlorophenol < 2, 4-dichlorophenol. Substantial uptake of the phenols on activated carbon was observed and was found to be 0.83, 0.91, 0.93 and 1.51 mmol/g for phenol, 2-chlorophenol, 4-chlorophenol and 2,4-dichlorophenol, respectively. Pseudo-first order and pseudo-second order models were used to analyse the kinetic data and the process was found to follow pseudo-second order kinetic model.

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