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International Conference on

Recent Trends in Environmental Sustainability

ESCON22/NMsB/30
Effective sequestration of acid orange-7 Dye from water using ZnO/Ricinus communis
biochar nanocomposite

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1*
Rimsha Jamil , Dr. Nasir Masood
1 Department of Environmental Sciences, COMSATS University Islamabad, Vehari- Campus,
61100 Pakistan
Correspondence: nasirmasood@ciitvehari.edu.pk

Abstract
Water is very important to maintaining life on earth. Lower water quality and assets due to
increase in industrialization, overpopulation, and overexploitation. It is dire need to treat the
effluents with cost effective and environment friendly adsorbents to meet water requirements.
In this research, Ricinus communis biochar (RCB) and their nanocomposites with zinc oxide
(RCB/ZnO) were used for batch scale removal of Acid Orange 7 dye (AO7). The effects of
adsorbent dose (1 - 4g/L), initial concentration (25 - 500 mg/L) of the dyes, pH (2 - 8), and
contact time (15 - 180 min) was evaluated and compared on the adsorption potential of these
adsorbents. The results show that the removal of AO7 by using RCB was 90-70%when the IC
was changed from 25-200mg/L. While the removal of AO7 by using RCB/ZnONPs was 99-
89%. Comparison with other previous studies shows that the proposed materials are more
efficient with greater adsorption capacity. It is suggested that the composites of nanoparticles
should be used for the remediation of AO7 at industrial level.

Keywords: sequestration, effluent, adsorption

Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus

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