Treatment of Dyes Contaminated Water using Biochar Derived from Eucalyptus Wood Waste

Yu Shuang Ren1

Ainur Seilkhan2, 3Email

Bекеn Akbota2

Shicheng Zhang4

Jiajun Xu5

Hizbullah Khan6

Muhammad Ilyas7Email

School of Economics and Management, Jilin Jianzhu University, Chang Chun, 130117, China
Educational Program, Geography, Environment and Service Sector, Abai Kazakh National Pedagogical University, Almaty, 01000, Kazakhstan
Biomedical Research Centre, Al-Farabi Kazakh National University, Al-Farabi Ave. 71, 050040, Kazakhstan
Environmental Building, Jiangwan Campus, Fudan University, No. 2205 Songhu Road, Yangpu District, Shanghai, 200433, China
Institute for Advanced Studies, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
Department of Environmental Sciences, University of Peshawar, Peshawar, Khyber Pakhtunkhwa, 44000, Pakistan
Department of Environmental Sciences, Shaheed Benazir Bhutto University, Wari Campus, Dir Upper, Khyber Pakhtunkhwa, 44000, Pakistan

Abstract

In the present study, water-soluble dyes like methylene blue (MB) and crystal violet (CV) were extracted from aqueous solutions utilizing biochar (EWB) produced from eucalyptus wood waste (EWW). EWW was carbonized at 450 oC to form EWB, which is then activated by the addition of zinc chloride (ZnCl2). Characterization of the EWB was done using scanning electron micrograph (SEM), Fourier Transform Infrared Spectroscopy (FT-IR), and surface area studies. Optimized conditions resulted in a maximum adsorption of MB of 14.42 mg/g and CV of 12.95 mg/g over EWB. Adsorption of both dyes on EWB is shown to follow the Langmuir adsorption isotherm model and occur through pseudo 2nd order kinetics, according to kinetic and isotherm studies. According to several thermodynamic parameters, such as ∆Go, ∆Ho, and ∆So, the adsorption of dyes onto EWB was an endothermic and spontaneous process. The results of the study suggest that EWB might be a useful adsorbent for removing MB and CV from wastewater.