Journal ArticleDOI
Mechanism of hexavalent chromium adsorption by persimmon tannin gel
Akira Nakajima,Yoshinari Baba +1 more
TLDR
Mechanism of chromium adsorption by the persimmon tannin (PT) gel was examined and Hexavalent chromium was adsorbed on the PT gel through the esterification of chromate with catechol group to be recovered as a Cr(IV)-tannin complex at pH 3 or a Cr-III solution at pH 1 or lower pH region.About:
This article is published in Water Research.The article was published on 2004-07-01. It has received 137 citations till now. The article focuses on the topics: Hexavalent chromium & Chromium.read more
Citations
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Journal ArticleDOI
Activated carbons and low cost adsorbents for remediation of tri- and hexavalent chromium from water.
Dinesh Mohan,Charles U. Pittman +1 more
TL;DR: The sorption capacities of commercial developed carbons and other low cost sorbents for chromium remediation are provided, and particular attention is paid to comparing the sorption efficiency and capacities of commercially available activated carbons to otherLow cost alternatives.
Journal ArticleDOI
Potential of tea factory waste for chromium(VI) removal from aqueous solutions: Thermodynamic and kinetic studies
Emine Malkoc,Yasar Nuhoglu +1 more
TL;DR: In this article, the effect of process parameters such as pH, initial concentration of Cr(VI) ion, temperature, agitating rate and adsorbent mass on the performance of heavy metal adsorption from synthetic wastewaters with another pollutant matter.
Journal ArticleDOI
Equilibrium and kinetic data, and adsorption mechanism for adsorption of lead onto valonia tannin resin
TL;DR: In this article, the authors analyzed the results of the adsorption of lead-ions onto valonia tannin resin using four kinetic models: the pseudo first-and second-order equations, the Elovich equation, the intraparticle diffusion equation, and the particle diffusion equation.
Journal ArticleDOI
Biosorption of chromium species by aquatic weeds: Kinetics and mechanism studies
TL;DR: Aquatic weeds seem to be a promising biosorbent for the removal of chromium ions from water environment with significant difference in the concentrations of Cr(VI) and total chromium removed by the biosorbents.
Journal ArticleDOI
Tannin-based biosorbents for environmental applications - A review
TL;DR: The literature about the production of different types of TBAs (resins, foams, immobilized tannins on support matrices, iron and amine treatments) is revised in this article.
References
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Journal ArticleDOI
Hard and soft acids and bases
TL;DR: In this paper, the rate data for the generalized nucleophilic displacement reaction were reviewed, and the authors presented a method to estimate the rate of the generalized displacement reaction in terms of the number of nucleophiles.
Book
Critical Stability Constants
TL;DR: Erratum to: Aminocarboxylic Acids to: Iminodiacetic Acid Derivatives to: Peptides to: Aliphatic Amines to: Protonation Values for other Ligands.
Related Papers (5)
Activated carbons and low cost adsorbents for remediation of tri- and hexavalent chromium from water.
Dinesh Mohan,Charles U. Pittman +1 more