Preparation and characterization of biosorbents and copper sequestration from simulated wastewater

Bansal, Manjeet; Mudhoo, Ackmez; Garg, V.K.; Singh, Deepti

doi:10.1007/s13762-013-0293-1

Cited by 21 publications

(10 citation statements)

References 55 publications

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“…hydroxide, sulphide or chelating precipitation, as well as ion-exchange or adsorption (Wan Ngah et al 2002;Akar et al 2009;Zhu and Li 2015;Jain et al 2016), e.g. with activated carbon, carbon nanotubes, magnetic nanoparticles (Feitoza et al 2014), low-cost adsorbents from industrial waste streams (Castaldi et al 2015;Cretescu et al 2015) or bioadsorbents (Davis et al 2003;Deng et al 2013;Hokkanen et al 2013;Shaheen et al 2013;Bansal et al 2014;Ş en et al 2015;Komkiene and Baltrenaite 2016). Furthermore, membrane filtration processes (Ujang and Anderson 1996;Qdais and Moussa 2004) such as ultrafiltration, nanofiltration, reverse osmosis or electrodialysis are utilized.…”

Section: Introductionmentioning

confidence: 99%

Phosphorylated nanocellulose papers for copper adsorption from aqueous solutions

Mautner

Maples

Kobkeatthawin

et al. 2016

Int. J. Environ. Sci. Technol.

116

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Copper is a major problem in industrial wastewater streams, seriously affecting the quality of potential drinking water. Several approaches, including continuous membrane processes or batch-wise application of adsorbents, are in use to tackle this problem. Unfortunately, these processes suffer from their particular drawbacks, such as low permeance or disposal of saturated adsorbents. However, a combination of these processes could constitute a step towards a more efficient copper removal solution. Here, we present a nanopaper ion-exchanger prepared from cellulose nanofibrils produced from fibre sludge, a paper industry waste stream, for the efficient, continuous removal of copper from aqueous solutions. This nanopaper ion-exchanger comprises phosphorylated cellulose nanofibrils that were processed into nanopapers by papermaking. The performance of these phosphorylated nanopaper membranes was determined with respect to their rejection of copper and permeance. It was shown that this new type of nanopaper is capable of rejecting copper ions during a filtration process by adsorption. Results suggest that functional groups on the surface of the nanopapers contribute to the adsorption of copper ions to a greater extent than phosphate groups within the bulk of the nanopaper. Moreover, we demonstrated that those nanopaper ion-exchangers could be regenerated and reused and that in the presence of calcium ions, the adsorption capacity for copper was only slightly reduced.

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Section: Introductionmentioning

confidence: 99%

Phosphorylated nanocellulose papers for copper adsorption from aqueous solutions

Mautner

Maples

Kobkeatthawin

et al. 2016

Int. J. Environ. Sci. Technol.

116

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“…Maximum percent desorption of Pb(II) and Cd(II) of 78% and 71% were, respectively, achieved within 1 h for HCl concentration of 0.05 M from NaOH activated Irvingia gabonensis, as shown in Figure 1 adsorbent surface was covered with H and Cd(II) ions were disrupted. Thereafter, the metal ions could not compete with H exchange sites and subsequently heavy solution [19]. …”

Section: Desorption Resultsmentioning

confidence: 99%

Kinetic and equilibrium studies of Pb(II) and Cd(II) adsorption on African wild mango (Irvingia gabonensis) shell

Adekola

Adegoke²,

Ajikanle³

2016

Bull. Chem. Soc. Eth.

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ABSTRACT. The adsorption behavior of NaOH-activated African wild mango (Irvingia gabonensis) shell with respect to Pb 2+ and Cd 2+ has been studied in order to consider its application to purify metal finishing waste water. The optimum conditions of adsorption were determined by investigating the initial metal ions concentration, contact time, adsorbent dose, pH value of aqueous solution and temperature. The extent of adsorption of metal ions was investigated by batch method using metal concentrations in solution ranging from 5-200 mg/L. The adsorption efficiencies were found to be pH dependent, with maximum metals uptake recorded at pH of 5. The equilibrium adsorption capacity for lead and cadmium ions were obtained from Freundlich, Langmuir, Temkin and DRK isotherms and the experimental data were found to fit best the Langmuir isotherm with values of 21.28 and 40.00 mg/g for Cd(II) and Pb(II) ions, respectively. The Pseudo-second order kinetics model had the best fitting for lead and cadmium adsorption kinetic data. The thermodynamic investigation showed that the adsorption processes of both metals are exothermic. An optimum concentration of 0.05 M HCl was found to be adequate for the regeneration of the spent adsorbent with recovery values of 78% and 71% for Pb 2+ and Cd 2+ respectively from the spent adsorbent. The results revealed that lead and cadmium are considerably adsorbed on the adsorbent and could be an economic method for the removal of these metals from aqueous solutions.

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“…It can be observed that the removal of nickel increases with increasing time in the first 0.5 h and thereafter the removal is not significant, indicating that the minimum contact time necessary for a good heavy metal removal is 0.5 h. This indicates that the maximum removal of nickel is achieved within 0.5 h after which concentration of nickel in the solution become constant. This may be explained by the fact that initially for adsorption large number of vacant sides was available, which slowed down later due to exhaustion of remaining surface sites and repulsive force between solute molecule and bulk phase 36,37 . The rapid removal of the adsorbate has significant practical importance as it will facilitate smaller reactor volumes ensuring efficiency and economy [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] .…”

Section: Resultsmentioning

confidence: 99%

Use of Silica Fume as Low-Cost Absorbent Material for Nickel Removal from Aqueous Solutions

Kalkan¹,

Nadaroğlu²,

Çelebi³

2014

Asian J. Chem.

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The presence of heavy metals in the aquatic ecosystem causes harmful effects to living organisms and causes environmental hazards 1. Inorganic effluents contaminate wastewater with toxic metals such as Ni, Cr, Cd, Hg, Pb and Zn 2-4. These heavy metals are extremely toxic, non-biodegradable and accumulate in the food chain, even in relatively minute quantities. Thus, industries such as electroplating, aerospace and metal finishing are among the most hazardous from a wastewater viewpoint 5-6. For the past several years, high levels of heavy metals in drinking water and foods have been associated with several acute and chronic illnesses in humans throughout the world 7,8. Water pollution is the contamination of water bodies such as lakes, rivers, oceans and groundwater caused by human activities, which can be harmful to organisms and plants, present in water bodies. The presence of heavy metals in streams, lakes and groundwater reservoirs has been responsible for several health problems with plants, animals and human beings 9. Heavy metal contamination exists in aqueous waste stream from many industries such as metal plating, mining, tanneries, painting, car radiator manufacturing, as well as agricultural sources where fertilizers and fungicidal spray are intensively used 10-12. Nickel ion is one such heavy metal frequently encountered in raw wastewater streams from industries, such as non-ferrous

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Preparation and characterization of biosorbents and copper sequestration from simulated wastewater

Cited by 21 publications

References 55 publications

Phosphorylated nanocellulose papers for copper adsorption from aqueous solutions

Phosphorylated nanocellulose papers for copper adsorption from aqueous solutions

Kinetic and equilibrium studies of Pb(II) and Cd(II) adsorption on African wild mango (Irvingia gabonensis) shell

Use of Silica Fume as Low-Cost Absorbent Material for Nickel Removal from Aqueous Solutions

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