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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 13, No. 4, 2016, pp. 1177-1188
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Bioline Code: st16111
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 13, No. 4, 2016, pp. 1177-1188
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Investigation on the effective remediation of quinoline at solid/solution interface using modified agricultural waste: an inclusive study
Ahmed, Md. J. K. & Ahmaruzzaman, M.
Abstract
This research work explores the potential of
modified agricultural waste for the sorption of quinoline
from aqueous media. A quinoline removal efficiency of
around 97 % and sorption capacities of ~20 (batch) and
~35 mg g-1 (fixed-bed) were achieved. Pseudo-second-order
kinetics and Temkin isotherm best represented the
equilibrium sorption data. The sorption of quinoline is
exothermic and spontaneous in nature with a slight increase
in the system entropy. The quinoline sorption mechanism is
controlled by H-bonding, π–π dispersive interactions,
boundary layer, and intraparticle diffusion. Microwave–chemical integrated regeneration technique retrieves the
sorption capacity of the exhausted sorbent with 99.15,
97.64, and 95.55 % of the original, in three sorption–regeneration
cycles. Energy recovery (19.365 MJ kg-1) from
the quinoline-loaded sorbent and the potential utilization of
left-over ash materials enhanced the prospective of the
sorbent for the remediation of pollutants for a clean and
green environment.
Keywords
Fixed-bed; Intraparticle diffusion; Isotherm; Kinetics; Regeneration; Sorption
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