Adsorption of Chromium on Composite Microspheres of Chitosan and Nano Iron Oxide

Dhiwar, Chanchal; Tiwari, Alka; Bajpai, A. K.

doi:10.1080/01932691.2010.505125

Cited by 8 publications

(1 citation statement)

References 19 publications

(13 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Langmuir isotherm is among the most cited best isothermal models to govern biosorption of xenobiotics including chromium sorption [21,26,[59][60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76][77]. In a more specific detail, the Langmuir models for chromium biosorption is the best model in Cr (VI) and Fe (III) removal using Cajanus cajan husk [65] (Cr(VI)) from aqueous solutions onto activated carbons (AC).…”

Section: Resultsmentioning

confidence: 99%

Isothermal Modelling of the Adsorption of Chromium onto Calcium Alginate Nanoparticles

Dan-Iya¹,

Shukor

2021

J Environ Microbiol Toxicol

View full text Add to dashboard Cite

Because of its extensive usage in industrial applications such as leather tanning, metallurgy, electroplating, and refractory materials, chromium is one of the most dangerous trace elements introduced into surface and ground waters. The sorption isotherm of chromium sorption onto calcium alginate nanoparticles were analyzed using ten models—Henry, Langmuir, Dubinin-Radushkevich, Freundlich, BET, Toth, Sips, Fritz-Schlunder IV, Baudu and Fritz-Schlunder V, and fitted using non-linear regression. Only the Toth and Fritz-Schlunder V models were unable to fit the data. Statistical analysis based on root-mean-square error (RMSE), adjusted coefficient of determination (adjR2), bias factor (BF), accuracy factor (AF), corrected AICc (Akaike Information Criterion), BIC and HQC showed that the Langmuir model was the best model in terms of overall best criteria. The calculated evidence ratio was 7 with an AICc probability value of 0.87 indicating that the best model was at least 7 times better than the nearest best model, which was Freundlich. The calculated Langmuir parameters qmL value of 79.174 mg/g (95% confidence interval from 50.702 to 107.646) and bL value of 0.332 L/mg (95% confidence interval from 0.294 to 0.371) is not much different from the linearized published work for the qmL value of 145 mg/g but lower than the bL value of 0.34 L/mg. The nonlinear regression method allows for the parameter values to be represented in the 95% confidence interval range which can better allow comparison with published results.

show abstract

Section: Resultsmentioning

confidence: 99%

Isothermal Modelling of the Adsorption of Chromium onto Calcium Alginate Nanoparticles

Dan-Iya¹,

Shukor

2021

J Environ Microbiol Toxicol

View full text Add to dashboard Cite

show abstract

Relationship analysis of anaerobic fermentation parameters exposed to elevated chromium (VI)

Zhang

Han

Tian

et al. 2019

Env Prog and Sustain Energy

View full text Add to dashboard Cite

Heavy metals may affect anaerobic fermentation processes, which could result in variations in anaerobic fermentation parameters. In the present study, the impact of changing hexavalent chromium (Cr6+) concentrations on different anaerobic fermentation parameters was investigated. The results showed that adding Cr6+ affected fermentation efficiency since it elicited changes in enzyme activity as well as metabolic pathways. Adding Cr6+ (30 mg/L) resulted in significant positive correlation between coenzyme F420 activities, CH4 contents, and cumulative biogas yields. The results suggested Cr6+ enhanced biogas production by promoting the activity of coenzyme F420. Increasing the concentration of Cr6+ to 100 mg/L resulted in a significant correlation (P < 0.01) between the CH4 contents and cumulative biogas yields and oxidation–reduction potential and pH. At high concentrations, Cr6+ (500 mg/L) elicited parametric relationships dissimilar to those obtained using low Cr6+ concentrations, particularly on the hydrolysis stage. This study comprehensively demonstrated the influence of Cr6+ stress during the anaerobic fermentation process from a new insight and could provide critical references for further experimental design and data monitoring investigations. © 2019 American Institute of Chemical Engineers Environ Prog, 38: e13212, 2019

show abstract

Morphological, Mechanical and Thermal Study of ZnO Nanoparticle Reinforced Chitosan Based Transparent Biocomposite Films

Das

Maiti

Liu

2014

J. Inst. Eng. India Ser. D

View full text Add to dashboard Cite

Adsorption of Chromium on Composite Microspheres of Chitosan and Nano Iron Oxide

Cited by 8 publications

References 19 publications

Isothermal Modelling of the Adsorption of Chromium onto Calcium Alginate Nanoparticles

Isothermal Modelling of the Adsorption of Chromium onto Calcium Alginate Nanoparticles

Relationship analysis of anaerobic fermentation parameters exposed to elevated chromium (VI)

Morphological, Mechanical and Thermal Study of ZnO Nanoparticle Reinforced Chitosan Based Transparent Biocomposite Films

Contact Info

Product

Resources

About