Fixed-bed column study for hexavalent chromium removal and recovery by short-chain polyaniline synthesized on jute fiber

Kumar, Parveen; Chakraborty, Saswati

doi:10.1016/j.jhazmat.2008.05.147

Cited by 153 publications

(70 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is because H ? or OH -ions influence the ionization capacity of the metal ion present in it (Kumar and Chakraborty 2009). To investigate the effect of pH on the chromium removal using MLP, studies were conducted at pH range of 2-8 and 100 mg/L chromium solution with 4 g/L biomass.…”

Section: Resultsmentioning

confidence: 99%

Efficacy of mangrove leaf powder for bioremediation of chromium (VI) from aqueous solutions: kinetic and thermodynamic evaluation

et al. 2014

View full text Add to dashboard Cite

Biosorption of heavy metals by bio-materials has been posited as a potential alternative to the existing physicochemical technologies for detoxification and recovery of toxic and valuable metals from wastewaters. In this context, the role of mangrove leaf powder (MLP) as biosorbent for chromium removal was investigated. In the present study, the effect of process parameters such as particle size, solution pH, initial concentration of Cr(VI) ion and adsorbent dose on chromium removal by MLP was investigated. The maximum sorption was observed at particle size 0.5 mm and pH 2.0. The adsorption data follow the pseudo second-order kinetics model. The isotherms denote that Langmuir model is the best fitted than Freundlich model. The maximum adsorption capacity (Q 0 ) of 60.24 mg/g of Cr(VI) at 30 min on MLP was determined using the Langmuir model. The adsorption isotherm model indicates that the chromium is adsorbing as monolayer on the surface of MLP with heterogeneous energetic distribution of active sites. Various thermodynamic parameters, such as Gibb's free energy (DG°), enthalpy (DH°) and entropy (DS°) have been calculated. The thermodynamic data revealed that the adsorption of chromium ions onto MLP is endothermic in nature and a spontaneous process. The results of the present study suggest that MLP is an effective bioremediation measure for removal of high concentration of Cr(VI) in waste waters.

show abstract

Section: Resultsmentioning

confidence: 99%

Efficacy of mangrove leaf powder for bioremediation of chromium (VI) from aqueous solutions: kinetic and thermodynamic evaluation

et al. 2014

View full text Add to dashboard Cite

show abstract

“…increased bed height) between the Cr(VI) ions and the PPy-GO-NC. Also with an increase in bed mass, the mass transfer zone becomes broadened as well as more binding sites for adsorption of Cr(VI) ions becoming available [52].…”

Section: Effect Of Bed Massmentioning

confidence: 99%

High-performance towards Cr(VI) removal using multi-active sites of polypyrrole–graphene oxide nanocomposites: Batch and column studies

Setshedi

Bhaumik

Onyango

et al. 2015

Chemical Engineering Journal

110

View full text Add to dashboard Cite

“…Various mathematical models have been applied for the investigation over the lab-scale column studies for the intent of industrial importance (Kumar and Chakraborty 2009). In the present study, models such as Thomas, Adams-Bohart, Yoon-Nelson, and bed depth service time (BDST) have been used to predict the breakthrough performance and to determine the kinetic constants and adsorption capacity of the adsorbents in the packed bed columns.…”

Section: Modeling Of Column Datamentioning

confidence: 99%

Adsorption of hexavalent chromium from synthetic and electroplating effluent on chemically modified Swietenia mahagoni shell in a packed bed column

Rangabhashiyam

Nandagopal

Nakkeeran

et al. 2016

Environ Monit Assess

View full text Add to dashboard Cite

Packed bed column studies were carried out to evaluate the performance of chemically modified adsorbents for the sequestration of hexavalent chromium from synthetic and electroplating industrial effluent. The effects of parameters such as bed height (3-9 cm), inlet flow rate (5-15 mL/min), and influent Cr(VI) concentration (50-200 mg/L) on the percentage removal of Cr(VI) and the adsorption capacity of the adsorbents in a packed bed column were investigated. The breakthrough time increased with increasing bed height and decreased with the increase of inlet flow rate and influent Cr(VI) concentration. The adsorption column models such as Thomas, Adams-Bohart, Yoon-Nelson, and bed depth service time (BDST) were successfully correlated with the experimental data. The Yoon-Nelson and BDST model showed good agreement with the experimental data for all the studied parameter conditions. Results of the present study indicated that the chemically modified Swietenia mahagoni shell can be used as an adsorbent for the removal of Cr(VI) from industrial wastewater in a packed bed column.

show abstract

Fixed-bed column study for hexavalent chromium removal and recovery by short-chain polyaniline synthesized on jute fiber

Cited by 153 publications

References 44 publications

Efficacy of mangrove leaf powder for bioremediation of chromium (VI) from aqueous solutions: kinetic and thermodynamic evaluation

Efficacy of mangrove leaf powder for bioremediation of chromium (VI) from aqueous solutions: kinetic and thermodynamic evaluation

High-performance towards Cr(VI) removal using multi-active sites of polypyrrole–graphene oxide nanocomposites: Batch and column studies

Adsorption of hexavalent chromium from synthetic and electroplating effluent on chemically modified Swietenia mahagoni shell in a packed bed column

Contact Info

Product

Resources

About