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Equilibrium studies of copper ion adsorption onto modified kernel of date (Fructus dactylus)
Nadaroglu, H.; Kalkan, E. & Celik, H.
Abstract
Heavy metal pollution of water is a serious
problem because of its toxic effects on the human health
and living organism. Therefore, there is a need to develop
technologies to remove toxic pollutants found in polluted
water. There are different ways to remove the toxic metals
from wastewater. Among all treatments proposed, the
adsorption process is one of the most promising technologies
in water pollution control. Recently, numerous
approaches have been studied for the development of
cheaper and effective adsorbents. Many low-cost adsorbents,
including natural materials, biosorbents and waste
materials from industry and agriculture, have been proposed
by several researchers. In this study, removal of
copper from aqueous solution by using powdered and
modified kernel of date (Fructus dactylus) with apocarbonic
anhydrase enzyme has been investigated. The operating
variables studied were contact time, initial solution
pH, initial metal concentration, temperature and adsorbent
dosage. The experimental investigation results showed that
modified and powdered kernel of date (F. dactylus) has a
high level of adsorption capacity for copper ions. The
adsorption data were correlated with the Langmuir and
Freundlich isotherm models. It was found that the
Langmuir and Freundlich isotherms fitted well to the data.
The results revealed that copper is considerably adsorbed
on modified and powdered kernel of date (F. dactylus).
Consequently, it is concluded that the modified and powdered
kernel of date (F. dactylus) can be successfully used
for the removal of the copper ions from the aqueous
solutions.
Keywords
Kernel of date (Fructus dactylus); Apocarbonic anhydrase; Heavy metal; Copper removal; Adsorption isotherms
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