Biosorption of Cu(II) onto agricultural materials from tropical regions

Acheampong, Mike A.; Pereira, João Manuel; Meulepas, Roel J.W.; Lens, Piet N.L.

doi:10.1002/jctb.2630

Cited by 38 publications

(34 citation statements)

References 31 publications

(47 reference statements)

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“…The decrease in the initial metal concentration prolonged the breakthrough curve and required higher treatment time for the saturation. Similar nature of the breakthrough curve has been reported by Acheampong et al for Cu(II) removal using coconut shells as bioadsorbent.…”

Section: Resultssupporting

confidence: 86%

“…The dried biomass was powdered and sieved. Density, surface area, and porosity for the dried MSB were measured using standard methods available for analysis of biosorbents . The pH zpc (point of zero charge) was determined using standard method available in the literature .…”

Section: Methodsmentioning

confidence: 99%

“…For large scale treatment, continuous operation is effective though batch study would be important to evaluate the adsorption performance in terms of the adsorption capacity for different types and for establishing equilibrium adsorption isotherms . A fixed‐bed column is simple to operate and economical though the efficient design with high degree of accuracy requires large data in terms of adsorption kinetics and adsorption isotherms .…”

Section: Introductionmentioning

confidence: 99%

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Removal of Copper and Hexavalent Chromium Using Immobilized Modified Sludge Biomass Based Adsorbent

Ramteke

Gogate

2016

CLEAN Soil Air Water

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The present work, deals with the development of an efficient modified sludge biomass (MSB) based adsorbent and subsequent application for the removal of copper and hexavalent chromium from wastewater. Different approaches of immobilization based on the use of polyvinyl alcohol (PVA), carboxymethyl cellulose (CMC), calcium alginate (CA), and activated carbon (AC) have been investigated with an objective of obtaining the most efficient biosorbent. Characterization studies for the adsorbents were performed followed by batch studies to compare the efficacy of different adsorbents for metal removal. Using the most efficient biosorbent, continuous operation studies were performed for understanding the effect of operating conditions such as initial pH, flow rate, inlet concentration, and bed height. The adsorption capacity was greatly affected by initial pH, adsorbent amount, contact time, and the type of polymer matrix. The order of adsorption capacities were MSB-PVA-CMC-AC > MSB-PVA-CMC > MSB-PVA > MSB-CA with maximum values being 288.6 and 215.4 mg g À1 for Cu(II) and Cr(VI), respectively. The experimental data were successfully fitted into different isotherms and kinetic models to establish the important design parameters. Reusability studies revealed that the MSB-PVA-CMC biosorbent could be reused for five biosorptiondesorption cycles without any significant loss in the adsorption capacity. Overall, the immobilized MSB on PVA-CMC has been demonstrated as an effective biosorbent for removal of copper and chromium.

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Section: Resultssupporting

confidence: 86%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Removal of Copper and Hexavalent Chromium Using Immobilized Modified Sludge Biomass Based Adsorbent

Ramteke

Gogate

2016

CLEAN Soil Air Water

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“…A previous study on gold sorption using a series of different Amberlite XAD resins impregnated with an ionic liquid (Cyphos IL101, a tetraalkyl phosphonium chloride) has shown that the sorption performance is correlated with IL loading in terms of sorption capacity and that uptake kinetics are strongly influenced by both the IL loading and the textural properties of the resin . SEM‐EDX (scanning electron microscopy coupled with energy dispersive analysis of X‐ray) was already used for the characterization of sorbent materials (composition, homogeneity, distribution of functional groups or ion‐exchangers), the dispersion of target metals in the sorbent, but also for the interpretation of diffusion profiles and mass transfer mechanisms . Chaigneau et al used SEM‐EDX to follow the transport parameters in porous media affected by in situ mineral precipitation .…”

Section: Introductionmentioning

confidence: 99%

How the conditioning and storage of samples for SEM-EDX analysis may influence the interpretation of diffusion mechanisms in the sorption of metals ions by extractant impregnated resins

Navarro

Lira

Saucedo

et al. 2016

J. Chem. Technol. Biotechnol

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BACKGROUND Modeling mass transfer steps is important for optimizing the use of sorbents such as extractant impregnated resins (EIR). However, mathematical fit of kinetic profiles requires physical characterization for validating mechanism hypotheses. SEM‐EDX is a very useful tool for achieving this objective. RESULTS In this work special attention has been focused on the simultaneous modeling of the diffusion mechanisms (using homogeneous diffusion and shrinking core models associated to resistance to film diffusion, to intraparticle diffusion and to chemical reaction rate) and the SEM‐EDX analysis of the diffusion profiles for gold sorption on ionic liquid/impregnated resins (tetraalkylphosphonium IL immobilized in Amberlite XAD resins). Some discrepancies in the conclusions raised by the two approaches led to careful investigation of the effect of conditioning and storage of resins before SEM‐EDX analysis. The self‐diffusion of the metal ion in the EIR causes misinterpretation of diffusion profiles when inappropriate conditions are used. CONCLUSION SEM‐EDX can be efficiently used for improving the understanding of diffusion mechanisms in the study of metal uptake kinetics in EIRs providing that the analysis of the samples is carried out within 24 h and the sample is freeze‐dried (to limit metal‐ion self‐diffusion in the extractant phase). This study can obviously be extended to other sorption systems. © 2016 Society of Chemical Industry

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“…Lignocellulosic wastes have been widely studied for metal removal from water and are considered to be comparable to sorbents from other natural sources, with advantages resulting from their availability, low-cost and simple operational process (Miretzky and Cirelli 2010). Among them, it is possible to refer the use of agriculture wastes such as rice milling by-products (Tarley and Arruda 2004), rice bran (Fatima et al 2013), carrot residues (Nasernejad et al 2005), orange waste (Marín et al 2009(Marín et al , 2010, coconut husk (Acheampong et al 2011), grape bagasse (Farinella et al 2007), and sorghum straw, oats straw and agave bagasse (Bernardo et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Chromium(III) biosorption onto spent grains residual from brewing industry: equilibrium, kinetics and column studies

Ferraz

Amorim

Tavares

et al. 2014

Int. J. Environ. Sci. Technol.

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The use of industrial wastes for wastewater treatment as a strategy to their re-use and valorisation may provide important advances toward sustainability. The present work gives new insights into heavy metal biosorption onto low-cost biosorbents, studying chromium(III) biosorption onto spent grains residual from a Portuguese brewing industry both in batch and expanded bed column systems. Experimental studies involved unmodified spent grains and spent grains treated with NaOH. Metal uptake followed a rapid initial step, well described by the pseudosecond-order kinetic model up to 2-7 h, indicating chemisorption to be the rate-limiting step. Beyond this period intraparticle diffusion assumed an important role in the uptake global kinetics. The best fit for equilibrium data was obtained using the Langmuir model, with unmodified spent grains having the higher maximum uptake capacity (q max = 16.7 mg g -1 ). In open system studies, using expanded bed columns, the best performance was also achieved with unmodified spent grains: Breakthrough time (C/C i = 0.25) and total saturation time (C/C i = 0.99) occurred after 58 and 199 h of operation, corresponding to the accumulation of 390 mg of chromium(III), 43.3 % of the total amount entering the column. These results suggest that alkali treatment does not improve spent grains uptake performance. Changes in biomass composition determined by Fourier transform infrared spectroscopy suggested hydroxyl groups and proteins to have an important role in chromium(III) biosorption. This study points out that unmodified spent grains can be successfully used as lowcost biosorbent for trivalent chromium.

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Biosorption of Cu(II) onto agricultural materials from tropical regions

Cited by 38 publications

References 31 publications

Removal of Copper and Hexavalent Chromium Using Immobilized Modified Sludge Biomass Based Adsorbent

Removal of Copper and Hexavalent Chromium Using Immobilized Modified Sludge Biomass Based Adsorbent

How the conditioning and storage of samples for SEM-EDX analysis may influence the interpretation of diffusion mechanisms in the sorption of metals ions by extractant impregnated resins

Chromium(III) biosorption onto spent grains residual from brewing industry: equilibrium, kinetics and column studies

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