Treatment of phenolic wastewaters by mass transfer using crab eye surface modified adsorbent

Lallan Singh Yadav¹, Bijay Kumar Mishra², Arvind Kumar^3*_, Shalu Rawat^4*

¹University Institute of Technology and Engineering (UIET), Babasaheb Bhimrao Ambedkar University, Lucknow, 226002, Uttar Pradesh, India

²Centre of Studies in Surface Science and Technology, School of Chemistry, Sambalpur University, Jyoti Vihar, 768019, Odisha India

³Department of Chemical Engineering, National Institute of Technology, Rourkela -769008, Odisha, India

⁴Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow, 226002, Uttar Pradesh, India

ARTICLE INFOR: Received: 14 June 2022; Revised: 20 August 2022; Accepted: 22 August, 2022

CORRESPONDING AUTHOR: E-mail: arvindkumar@nitrkl.ac.in (A. Kumar); Tel.: +91 661 2462268., shalurawat200@gmail.com (S. Rawat) Tel.: +91 9807461701

J. Appl. Sci. Innov. Technol. 1 (2), 27-31 (2022)

Abstract

In this study, the abatement of phenol from water was determined by processed crab eye surface modified adsorbent (Indian plant: Abrus precatorios) as a source material. Removal of phenol from surface modified adsorbent was operated in intermittent process. Reduction of phenol depends upon different operational conditions such as pH of the solution, adsorbent load, concentration of phenol and period interaction for sorption. It was observed that maximum pH 8 and dilution 0.45 g/L were favourable for the removal of phenol from water. Application of kinetics studies showed that pseudo-second order fitted excellently with the data of phenol removal. Data trend shows removal of phenol was fitted best with Langmuir isotherm model as compared to Freundlich model. The change in enthalpy revealed phenol adsorption by the crab eye activated carbon was an exothermic process.

Keywords: Crab eye activated carbon; Adsorption; Isothermal parameters; kinetics; mass transfer

Scope: Environmental  Engineering