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International Conference on

Recent Trends in Environmental Sustainability

ESCON22/NMsB/34
Sequestration of textile dyes from wastewater using biochar and its nanocomposites

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Hasiba Hamaris , Mohsin Iqbal , Samina Khalid , Muhammad Imran , Behzad Murtaza , Zia
Ul Haq Khan 1
1 Department of Environmental Sciences, COMSATS University Islamabad, Vehari- Campus,
61100 Pakistan
Correspondence: hasibahamaris6715@gmail.com
Abstract
For environmental safety, wastewater containing dyes should be well treated earlier than
releasing into the water bodies. For this solution, quinoa biochar (QBC), QBC with cerium
oxide (QBC/CeNPs and QBC with copper oxide (QBC/CuONPs) used as economical and eco-
friendly adsorbents to remove acid blue and acid orange dyes from water at batch scale. In this
research, quinoa biochar (QBC), QBC with cerium oxide (QBC/CeNPs and QBC with copper
oxide (QBC/CuONPs) were used for batch scale removal of acid blue and acid orange dye (AB
and AO). The effects of adsorbent dose (1 - 4g/L), initial concentration (25 - 200 mg/L) of the
dyes, pH (4 - 10), and contact time (15 - 180 min) was evaluated and compared on the
adsorption potential of these adsorbents. When IC was changed from 25-200mg/L, the removal
of AB was 51-96%, 22-82% and 70-97% using QBC, QBC/CeONPs and QBC/CuONPs. And
the removal of AO was 99.6-68.5% by using QBC, QBC/CeONPs and QBC/CuONPs.)
Moreover, the experimental data was validated with kinetic and equilibrium models. Langmuir
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model was best suited for equilibrium study, while pseudo 2 order was best suited for the
kinetic study for AO dye and AB dye.
Keywords: QBC (Quinoa Biochar), Acid blue dye (AB), Acid orange dye (AO), CuONPs
(copper oxide nanoparticles), CeONPs (Cerium oxide nanoparticles)

Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus

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