Removal of cadmium and hexavalent chromium from electroplating waste water using thiocarbamoyl chitosan

Chauhan, Divya; Jaiswal, Meha; Sankararamakrishnan, Nalini

doi:10.1016/j.carbpol.2012.01.014

Cited by 82 publications

(15 citation statements)

References 28 publications

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“…At pH higher than 3, because ion HCrO 4 −1 turns into ion CrO 4 −2 and the adsorbent surface is deprotonated, adsorption of CrO 4 −2 is restricted due to the presence of negatively charged ions and competitive − OH, the low positive surface charge density of the adsorbent and the weakening of the electrostatic forces of attraction between the parallelly charged adsorbate and adsorbent. The results of the study are consistent with results obtained in previous researches [17,18].…”

Section: Effect Of Ph On Adsorptionsupporting

confidence: 95%

Application of chitosan-citric acid nanoparticles for removal of chromium (VI)

Bagheri

Younesi

Hajati

et al. 2015

International Journal of Biological Macromolecules

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Section: Effect Of Ph On Adsorptionsupporting

confidence: 95%

Application of chitosan-citric acid nanoparticles for removal of chromium (VI)

Bagheri

Younesi

Hajati

et al. 2015

International Journal of Biological Macromolecules

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“…For instance, chitosan hydrogel beads were studied for removal of nitrate (Chatterjee and Woo 2009), and protonated chitosan beads were used for fluoride (Viswanathan et al 2009). Chaunhan et al (2012) studied the removal of cadmium and hexavalent chromium from electroplating wastewater using thiocarbamoyl chitosan; Miretzky and Cirelli (2009) studied Hg(II) removal from water not only by chitosan but also its derivatives; and Chen and Chung (2006) evaluated the removal of As(III) and As(V) from water by chitosan itself due to its excellent biological properties.…”

Section: Introductionmentioning

confidence: 99%

Chitosan-Immobilized Pumice for the Removal of As(V) from Waters

Turan

Kocahakimoglu

Boyacı

et al. 2014

Water Air Soil Pollut

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A novel sorbent, chitosan-immobilized pumice, has been prepared for the sorption of As(V) from waters prior to its determination by hydride generation atomic absorption spectrometry. The success of the immobilization has been checked with such characterization techniques as scanning electron microscopy, thermal gravimetric analysis, and elemental analysis. Points of zero charge of the sorbents were determined with potentiometric mass titration. Batch-type equilibration studies have shown that the novel sorbent can be employed at a wide pH range resulting in quantitative sorption (>90 %) at pH 3.0-7.0 and greater than 70 % sorption at pH >8.0. These results demonstrate the advantage of immobilizing chitosan onto pumice, because, under the same conditions, pumice displays <20 % sorption toward As(V), whereas chitosan gives approximately 90 % sorption only at pH 3.0. The validity of the method was verified through the analysis of ultrapure, bottled drinking, and tap water samples spiked with arsenate; the respective sorption percentages of 93.2 (±0.7), 89.0 (±1.0), and 80.9 (±1.3) were obtained by batch-type equilibration. Arsenic sorption was also examined in the presence of common interfering ions resulting in competing effects of PO 4 3− and NO 3 − on As(V) adsorption.

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“…They are advantageous in low toxicity, low cost, and high efficiency. Polymers have been widely used for heavy metal removal from contaminated water (Çavuş and Gürdağ 2008;Chauhan et al 2012;Nastasović et al 2004), while their application in contaminated soils is not well documented. Chitosan, a copolymer of 2-glucosamine and N-acetyl-2-glucosamine, is one of the potential candidates for remediating heavy metal contaminated soils.…”

Section: Introductionmentioning

confidence: 99%

Reducing the bioavailability of cadmium in contaminated soil by dithiocarbamate chitosan as a new remediation

Yin

Cao

et al. 2015

Environ Sci Pollut Res

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Dithiocarbamate chitosan (DTC-CTS) was used as a new amendment for remediation of cadmium (Cd)-contaminated soils to reduce the Cd bioavailability. Arabidopsis thaliana was chosen as a model plant to evaluate its efficiency. It was found that DTC-CTS could effectively improve the growth of A. thaliana. The amount of Cd up-taken by A. thaliana could be decreased by as much as 50% compared with that grown in untreated Cd-contaminated soil samples. The chlorophyll content and the aerial biomass of Arabidopsis also increased substantially and eventually returned to a level comparable to plants grown in non-contaminated soils, with the addition of DTC-CTS. These findings suggested that DTC-CTS amendment could be effective in immobilizing Cd and mitigating its accumulation in plants grown in Cd-contaminated soils, with potential application as an in situ remediation of Cd-polluted soils.

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Removal of cadmium and hexavalent chromium from electroplating waste water using thiocarbamoyl chitosan

Cited by 82 publications

References 28 publications

Application of chitosan-citric acid nanoparticles for removal of chromium (VI)

Application of chitosan-citric acid nanoparticles for removal of chromium (VI)

Chitosan-Immobilized Pumice for the Removal of As(V) from Waters

Reducing the bioavailability of cadmium in contaminated soil by dithiocarbamate chitosan as a new remediation

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