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International Conference on

Recent Trends in Environmental Sustainability

ESCON22/ETERM/25
Removal of congo red dye from wastewater by quinoa biochar and composites

1
Komal Zahoor and Muhammad Nadeem 1*
1 Department of Environmental Sciences, COMSATS University Islamabad, Vehari-Cmpus,
61100 Pakistan

Correspondence: mnadeem11@gmail.com
Abstract

Dyes are very problematic because of their complex aromatic compounds and persistent nature.
Dyes are widely used and their untreated effluents are dumped into water bodies, causing harm
to the ecology. The goal of this work is to investigate the batch scale potential of quinoa biochar
(QBC) and its composite with manganese oxide nanoparticles (QBC/MnO) for removal of
Congo red dye from wastewater. On CR removal different parameters like the effects of initial
CR concentration (25–200 mg/L), QBC and QBC/MnO dose (0.5–2 g/L), solution pH (2–8),
and contact time (0–180 min) was studied. CR removal is higher at initial concentration at
25mg/L with QBC and QBC/MnO was 58.89% and 87. 35% respectively. Moreover, at pH 2
removal percentage was 50% with QBC and 89.8% QBC/MnONPs was noticed. The current
study found that a metallic nanocomposite (QBC/MnO) is an ideal option for the cost-effective
and environmentally friendly removal of CR from industrial wastewater, and that it should be
investigated for the removal of other contaminants as well.

Keywords: Quinoa biochar; CR; Aromatic compounds.

Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus

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