Synthesis of clay-cellulose biocomposite for the removal of toxic metal ions from aqueous medium

Abu-Danso, Emmanuel; Peräniemi, Sirpa; Leiviskä, Tiina; Kim, Tae Young; Tripathi, Kumud Malika; Bhatnagar, Amit

doi:10.1016/j.jhazmat.2019.120871

Cited by 72 publications

(25 citation statements)

References 35 publications

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“…Reddy et al reported that the adsorption kinetic data were best described by the pseudosecond-order model (Pb 2+ ) [59]. Abu-Danso et al also revealed that the adsorption kinetics of Pb(II) and Cd(II) onto a clay-cellulose biocomposite was well described by the pseudo-second-order kinetic model [60]. Similarly, our experimental results proved that the biosorption kinetics of live and dead biosorbents followed the pseudo-second-order model.…”

Section: Discussionsupporting

confidence: 81%

Pb2+ biosorption from aqueous solutions by live and dead biosorbents of the hydrocarbon-degrading strain Rhodococcus sp. HX-2

Cao

Yang

et al. 2020

PLoS ONE

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In this study, the Pb 2+ biosorption potential of live and dead biosorbents of the hydrocarbondegrading strain Rhodococcus sp. HX-2 was analyzed. Optimal biosorption conditions were determined via single factor optimization, which were as follows: temperature, 25˚C; pH, 5.0, and biosorbent dose, 0.75 g L −1. A response surface software (Design Expert 10.0) was used to analyze optimal biosorption conditions. The biosorption data for live and dead biosorbents were suitable for the Freundlich model at a Pb 2+ concentration of 200 mg L −1. At this same concentration, the maximum biosorption capacity was 88.74 mg g −1 (0.428 mmol g −1) for live biosorbents and 125.5 mg g −1 (0.606 mmol g −1) for dead biosorbents. Moreover, in comparison with the pseudo-first-order model, the pseudo-second-order model seemed better to depict the biosorption process. Dead biosorbents seemed to have lower binding strength than live biosorbents, showing a higher desorption capacity at pH 1.0. The order of influence of competitive metal ions on Pb 2+ adsorption was Cu 2+ > Cd 2+ > Ni +. Fourier-transform infrared spectroscopy analyses revealed that several functional groups were involved in the biosorption process of dead biosorbents. Scanning electron microscopy showed that Pb 2+ attached to the surface of dead biosorbents more readily than on the surface of live biosorbents, whereas transmission electron microscopy confirmed the transfer of biosorbed Pb 2+ into the cells in the case of both live and dead biosorbents. It can thus be concluded that dead biosorbents are better than live biosorbents for Pb 2+ biosorption, and they can accordingly be used for wastewater treatment.

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Section: Discussionsupporting

confidence: 81%

Pb2+ biosorption from aqueous solutions by live and dead biosorbents of the hydrocarbon-degrading strain Rhodococcus sp. HX-2

Cao

Yang

et al. 2020

PLoS ONE

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“…These observations all indicate that the isotherm is type III, in which the interaction between adsorption and adsorbate is relatively weak, and the adsorbed molecules are clustered around favorable sites (Sing, 1985;Thommes et al, 2015). The sorption isotherm showed a hysteresis loop which according to IUPAC nomenclature can be classified as Type H3 (no adsorption limit at high p/p 0 ) which is in line with other clay composites (Abu-Danso et al, 2020;Tong et al, 2018).type H3 loop is commonly seen in non-rigid combinations of plate-like particles (e.g., clays) (Thommes, 2010;Thommes et al, 2015). The specific surface area and pore radius were determined by the BJH method (Fig.…”

Section: Bet Analysissupporting

confidence: 73%

Adsorption of Azo Dyes by a Novel Bio-Nanocomposite Based on Whey Protein Nanofibrils and Nano-clay: Equilibrium Isotherm and Kinetic Modeling

Aqdam

Otzen

Morshedi

2020

Preprint

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Excessive discharge of hazardous azo dyes into aquatic ecosystem is a global environmental concern. Here, we develop a green approach to remediate dye pollutions in water by fabricating an easy separable bio-nanocomposite, based on whey protein concentrate, its nanofibrils and montmorillonite nano-clay. Nanofibrils lead to a uniform dispersion of montmorillonite in the whey protein matrix and also reinforce the nanocomposite. The adsorption efficacy was monitored in a batch system, using cationic dyes (Chrysoidine-G, Bismarck brown-R), reactive dyes (reactive black-5, reactive orange-16), acid dyes (acid red-88, acid red-114), and direct dyes (direct violet-51, Congo red). This nanocomposite adsorbed different dye classes, cationic dyes quicker (>82%, after 4 h) and reactive dyes slower. Then, the effect of dye concentration, contact time and adsorbent dose on Chrysoidine-G adsorption was explored. The adsorbent showed a high removal (>93%) for a wide concentration range of Chrysoidine-G. Equilibrium adsorption parameters were reasonably fitted with a linear (Nernst) isotherm model, while kinetic data were fitted with pseudo-second-order and intra-particle diffusion models. To characterize the nanocomposite, we used SEM, FT-IR, XRD and BET techniques. We conclude that this nanocomposite is a green adsorbent with potential use for wastewater treatment and related purposes.HighlightsWe produced a novel bio-nanocomposite using whey nanofibrils and MMTNanofibrils help disperse MMT particles uniformly in the WP matrixThe adsorbent’s performance was compared to the adsorbents in absence of MMT and nanofibrilsThis composite adsorbs cationic, anionic, direct and reactive azo dyes with different kineticsAdsorption isotherms and kinetics are studied in detailAbstract Figure

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“…Most of these techniques are known for high execution expenses or less ability to accomplish respectable water quality, except for adsorption. Adsorption process has shown good performance in water decontamination against different pollutants, e.g., antibiotics (Maged et al 2020 ) and heavy metals (Abu-Danso et al 2020 ). One of the advantages of adsorption is the ability to scale up the process, without producing any by-product in the environment during treatment.…”

Section: Introductionmentioning

confidence: 99%

Characterization of activated bentonite clay mineral and the mechanisms underlying its sorption for ciprofloxacin from aqueous solution

Maged

Kharbish

Ismael

et al. 2020

Environ Sci Pollut Res

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The presence of emerging pollutants such as hazardous chemicals, pharmaceuticals, pesticides, and endocrine-disrupting chemicals in water sources is a serious concern to the environment and human health. Thus, this study focused on exploring the interaction mechanisms between ciprofloxacin (CIP) (antibiotic) and clay (a low-cost adsorbent) during sorption process. Acid activation technique was opted for modifying natural bentonite (NB) to enhance the adsorptive removal of CIP from water. The BET surface area analysis revealed that acid-activated bentonite (AAB) possessed more than two fold higher surface area as compared to NB. Combining pH zpc measurements, effect of solution pH and CIP speciation revealed that CIP sorption onto bentonite is highly dependent on solution pH. Kinetic studies confirmed that CIP sorption mechanism was chemisorption which included ion-exchange and surface complexation mechanisms. The mechanism of CIP sorption onto AAB was successfully explored with the assistance of characterization techniques. Maximal monolayer sorption capacity of AAB was found to be 305.20 mg/g, compared to 126.56 mg/g for NB. Reusability studies demonstrated that AAB could be reused successfully up to 5 cycles. Furthermore, column studies showed satisfactory results confirming that AAB can be successfully used in continuous mode for practical applications. Electronic supplementary material The online version of this article (10.1007/s11356-020-09267-1) contains supplementary material, which is available to authorized users.

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Synthesis of clay-cellulose biocomposite for the removal of toxic metal ions from aqueous medium

Cited by 72 publications

References 35 publications

Pb2+ biosorption from aqueous solutions by live and dead biosorbents of the hydrocarbon-degrading strain Rhodococcus sp. HX-2

Pb2+ biosorption from aqueous solutions by live and dead biosorbents of the hydrocarbon-degrading strain Rhodococcus sp. HX-2

Adsorption of Azo Dyes by a Novel Bio-Nanocomposite Based on Whey Protein Nanofibrils and Nano-clay: Equilibrium Isotherm and Kinetic Modeling

Characterization of activated bentonite clay mineral and the mechanisms underlying its sorption for ciprofloxacin from aqueous solution

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