Journal ArticleDOI
Uptake of cadmium from water by beech leaves
TLDR
In this article, the effect of several factors on both rate and amount of this uptake has been studied, including concentration of leaves, concentration of cadmium, pH, competing ions and drying leaves.Abstract:
Uptake of cadmium from aqueous solutions by beech leaves has been studied. The effect of several factors on both rate and amount of this uptake has been studied. These factors include concentration of leaves, concentration of cadmium, pH, competing ions and drying leaves. The pattern of the curves showing the loss of cadmium from solution has been explained. Applicability of the Freundlich adsorption isotherm on the present results has been examined and the parameters of this isotherm have been calculated. The order of reaction between cadmium ions and beech leaves has been determined and a mechanism for this reaction has been suggested.read more
Citations
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Journal ArticleDOI
Pseudo-second order model for sorption processes
Yuh-Shan Ho,Gordon McKay +1 more
TL;DR: In this paper, a literature review of the use of sorbents and biosorbents to treat polluted aqueous effluents containing dyes:organics or metal ions has been conducted.
Journal ArticleDOI
Kinetics of pollutant sorption by biosorbents: review
TL;DR: A review of the mechanisms of solute sorption onto various biosorbents has been performed in this article, where the mechanisms have been subdivided into reaction based systems and diffusion based systems, and the literature has been reviewed in accordance with these two groups.
Journal ArticleDOI
On the comparison of pseudo-first order and pseudo-second order rate laws in the modeling of adsorption kinetics
TL;DR: In this paper, a different method is proposed to analyze experimental results and it is employed here to reexamine experimental data taken from the literature, and it appears that the method generally used is flawed and that it unfairly favors pseudo-second order kinetics.
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Single- and multi-component adsorption of cadmium and zinc using activated carbon derived from bagasse--an agricultural waste.
Dinesh Mohan,Kunwar P. Singh +1 more
TL;DR: Activated carbon derived from bagasse, an agricultural waste material, has been investigated as a replacement for the current expensive methods of removing heavy metals from wastewater and it was concluded that the adsorption occurs through a film diffusion mechanism at low as well as at higher concentrations.
Journal ArticleDOI
Application of Chitosan for the Removal of Metals From Wastewaters by Adsorption—Mechanisms and Models Review
TL;DR: Chitin is the world's second most abundant naturally occurring polysaccharide, and due to its widespread abundance, its chemical and physical versatility, and the problems of its disposal as a waste material, a wide range of value-added applications of chitin and chitosan are being initiated, investigated, and developed.
References
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Book
Cadmium in the environment
TL;DR: In this paper, a review on cadmium in the environment has been performed under a contract between the U.S. Environmental Protection Agency and the Department of Environmental Hygiene of the Karolinska Institute, Sweden.
Journal ArticleDOI
Cadmium as a factor in hypertension
TL;DR: Most human subjects dying from hypertensive complications showed in their kidneys either increased concentrations of cadmium or increased ratios of Cadmium to zinc, compared to subjects dying of a variety of other major diseases.
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Batch metal removal by peat : kinetics and thermodynamics
TL;DR: In this article, the kinetics and thermodynamics of batch metal removal reactions by 50 g/l (dry wt) eutrophic or oligotrophic peat particles using Cu 2+, Cd 2÷, Zn 2 ÷ and Ni 2 ǫ concentrations ranging from 0.01 to 100 mM were presented.
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Effect of Cd on photosynthesis and transpiration of excised leaves of corn and sunflower
TL;DR: A strong linear relationship between photosynthesis and transpiration inhibition is obtained in both species suggesting that Cd contamination induces stomatal closure.
Journal ArticleDOI
The Relationship of Cadmium in the Air to Cardiovascular Disease Death Rates
TL;DR: The average concentration of cadmium in the air of the 28 cities for which data are available shows a marked correlation with death rates from hypertension and arteriosclerotic heart disease, and the hypothesis is that it is a significant cause of hypertension and perhaps of a portion of the rest of the cardiovascular disease spectrum.