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International Conference on

Recent Trends in Environmental Sustainability

ESCON22/NMsB/09
Biosorption potential of corn derived waste and its nanocomposites for the
sequestration of brilliant green dye from contaminated water

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Muhammad Mohsin Iqbal , Muhammad imran 1*, Umer Ghani , Amjad Farooq , Behzad
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Murtaza , Noor Samad Shah Muhammad Amjad
1 Department of Environmental Sciences, COMSATS University Islamabad, Vehari- Campus,
61100 Pakistan
Correspondence: imranrb@cuivehari.edu.pk
Abstract
Water contamination with dye is a problem of high concern for the environment and human
health. It is reported that over 7000 dyes and pigments have complex chemical structure and
are completely resilient to biodegradation. It is need of the time to treat the effluents with cost
effective and environment friendly adsorbents. In this research, unexplored corn offals (CO)
and its nanocomposites with zinc oxide (CO/ZnO) and magnetite nanoparticles (CO/MNPs)
were used for batch scale removal of Brilliant Green dye (BG). The effects of adsorbent dose
(1 – 4 g/L), initial concentration (25 - 200 mg/L) of the dyes, pH (2 - 8), and contact time (15
- 180 min) was evaluated and compared the adsorption potential of these adsorbents. This study
demonstrated that the removal was 83, 90 with nanocomposites at optimum concentration (100
mg/L), dose (2 g/L), pH (8), equilibrium, and ambient temperature. The removal decreased
with increasing initial concentration of dye and the removal percentage changed from 89-82%,
95-88%, and 7-3% by using CO/ZnO, CO/MNPs and CO when the initial BG concentration
changed from 25-200 mg/L while other parameters were kept constant. Moreover, the
experimental data was validated with kinetic and equilibrium models. Freundlich model best
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suited for equilibrium study, while pseudo 2 order kinetic model suited well for the kinetic
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adsorption data (R =0.99). Comparison with 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 BG at industrial level.

Keywords: sequestration; adsorption; remediation; Brilliant Green Dye

Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus

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