Removal of heavy metal ions from aqueous system by ion-exchange and biosorption methods

Bashir, Arshid; Malik, Lateef Ahmad; Ahad, Sozia; Manzoor, Taniya; Bhat, Mudasir Ahmad; Dar, G. N.; Pandith, Altaf Hussain

doi:10.1007/s10311-018-00828-y

Cited by 521 publications

(174 citation statements)

References 141 publications

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“…Physical adsorption takes place on the surface of the biosorbent, possibly with the cell walls while dealing with microorganisms, with the aid of electrostatic interactions such as Van der Waals forces. Physical adsorption mechanism is affected by the surface area of the biosorbent and in some cases the pH of solution (Chojnacka, 2006) (Bashir et al, 2019). In the biosorption of lead by hami melon peels, physical adsorption was only favoured at basic conditions with the contribution carboxylate and hydroxylate groups of the biomass (Bashir et al, 2019).…”

Section: Physical Adsorptionmentioning

confidence: 99%

“…Physical adsorption mechanism is affected by the surface area of the biosorbent and in some cases the pH of solution (Chojnacka, 2006) (Bashir et al, 2019). In the biosorption of lead by hami melon peels, physical adsorption was only favoured at basic conditions with the contribution carboxylate and hydroxylate groups of the biomass (Bashir et al, 2019). A study suggested that chromium(III) ions were biosorbed by grass and wheat straw through physical adsorption mechanism bounded in a monolayer form, based on calculated maximum biosorption capacity and knowledge of ionic radius of the metal (Chojnacka, 2006).…”

Section: Physical Adsorptionmentioning

confidence: 99%

“…In addition, it was found that pH of solution can affect some biosorption mechanisms such as ion exchange. The biosorption mechanism of lead ions by hami melon peels was achieved by ion exchange at low pH, while at higher pH it was achieved by electrostatic interactions between carboxylate and hydroxylate groups on the biomass and lead ions (Bashir et al, 2019). Spirulina, a cyanobacteria, was capable of biosorbing chromium(III), cadmium(II) and copper(II) through ion exchange by identified functional groups including carboxyl, phosphate and hydroxyl groups (Kanamarlapudi et al, 2018).…”

Section: Ion Exchangementioning

confidence: 99%

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Removal of heavy metals from aqueous media by biosorption

Redha

2020

Arab Journal of Basic and Applied Sciences

151

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In this literature review, the removal of heavy metals from aqueous media by an environmentally friendly method, known as biosorption has been discussed. Biosorption can be referred to as an alternative to the common unsustainable industrial methods currently used. Removal of heavy metals from aqueous media by biosorption can take place by the aid of different types of biomass including algae, fungi, bacteria and plants. The mechanism(s) of biosorption can vary accordingly, mechanisms include physical adsorption, ion exchange, complexation, precipitation and transport across the cells. The efficiency of removal of heavy metals by a specific biosorbent at specified conditions can be compared by the calculated biosorption capacity of the respected biosorbent. Several factors can influence the biosorption capacity of different biosorbents, that mainly includes water pH, temperature, contact time, biomass dosage and initial heavy metal concentration. This literature review focuses on the types of biosorbents, mechanisms of biosorption and factors affecting biosorption capacity. In addition, biosorption, as a method which has the potential of competing with common industrial methods has been critically analysed.

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Section: Physical Adsorptionmentioning

confidence: 99%

Section: Physical Adsorptionmentioning

confidence: 99%

Section: Ion Exchangementioning

confidence: 99%

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Removal of heavy metals from aqueous media by biosorption

Redha

2020

Arab Journal of Basic and Applied Sciences

151

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“…High membrane cost, requirement of resin fouling, resin regeneration [22,23] Coagulation and flocculation Settling and dewatering of sludge High cost, large consumption of chemicals [24,25] Membrane filtration [7,30] The majority of these methods [7,[18][19][20][21][22][23][24][25][26][27][28][29][30] are expensive, ineffective in certain concentrations, or time-consuming, and adsorption is limited by the cost of the adsorption material [1,[6][7][8][9]31,32]. For these reasons, the choice of sorbent is crucial for the development of a simple, efficient, inexpensive, and environmentally friendly water purification method [33,34].…”

Section: Advantages Disadvantages Referencementioning

confidence: 99%

Influence of Wooden Sawdust Treatments on Cu(II) and Zn(II) Removal from Water

et al. 2020

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Organic waste materials and semi-products containing cellulose are used as low-cost adsorbents that are able to compete with conventional sorbents. In addition, their capacity to bind heavy metal ions can be intensified by chemical treatments using mineral and organic acids, bases, oxidizing agents, and organic compounds. In this paper, we studied the biosorption capacity of natural and modified wooden sawdust of poplar, cherry, spruce, and hornbeam in order to remove heavy metals from acidic model solutions. The Fourier transform infrared spectroscopy (FTIR) spectra showed changes of the functional groups due to the alkaline modification of sawdust, which manifested in the considerably increased intensity of the hydroxyl peaks. The adsorption isotherm models clearly indicated that the adsorptive behavior of metal ions in treated sawdust satisfied not only the Langmuir model, but also the Freundlich model. The adsorption data obtained for studied sorbents were better fitted by the Langmuir isotherm model for both metals, except for spruce sawdust. Surface complexation and ion exchange are the major mechanisms involved in metal ion removal. We investigated the efficiency of the alkaline modified sawdust for metal removal under various initial concentrations of Cu(II) and Zn(II) from model solutions. The highest adsorption efficiency values (copper 94.3% at pH 6.8 and zinc 98.2% at pH 7.3) were obtained for poplar modified by KOH. For all types of sawdust, we found that the sorption efficiency of modified sorbents was higher in comparison to untreated sawdust. The value of the pH initially increased more in the case of modified sawdust (8.2 for zinc removal with spruce NaOH) and then slowly decreased (7.0 for Zn(II) with spruce NaOH).

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“…Metal nanoparticles have been found quite efficient in this field because of their very high specific surface area, minimal environmental impact, low solubility and in addition no secondary pollution have been reported upon their use as adsorbents for heavy metal ion removal . Nanoparticles of different metals have been successfully applied for the treatment of wastewater . However, use of magnetite based materials in adsorption and other catalytic applications is a choice of interest due to the non‐toxicity, economic, strong magnetism and environment friendliness like advantages offered by this material .…”

Section: Introductionmentioning

confidence: 99%

Exploring Metal Ion Adsorption and Antifungal Properties of Carbon‐Coated Magnetite Composite

et al. 2020

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Nanoparticles have earned huge research interest due to their well known characteristics such as high specific surface, minimal environmental impact, ease in surface modification and low solubility in water. As a result, such materials have been used effectively to remove toxic metal ions from wastewater. Their adsorption potential has been further improved by modifying their surfaces by various means. In one such attempt, we have successfully synthesized magnetite and modified its surface by carbon while using glucose carbonization method. The as‐synthesized carbon coated magnetite (Mag@C) composite was characterized by Fourier transform infrared (FTIR) spectroscopy and the results were further supported by Energy dispersive X‐ray spectrometry (EDX), Scanning electron microscopy (SEM), Thermal gravimetric analysis (TGA), Zetastudies and X‐ray diffraction crystallography (XRD) like techniques. The Adsorption properties of Mag@C were explored for the removal of Cd2+ and Pb2+ ions where a promising adsorption performance towards these metal ions with maximum adsorption capacities of 127.3 mg/g and 103 mg/g for Cd2+ and Pb2+ ions, respectively, was obtained. The material was also examined for its antifungal properties towards Aspergillus niger and Penicillium notatum, two toxic species of fungi and a good fungicidal property of the composite material was observed. Adual application of Mag@C makes it as a useful material in the process of waste water treatment.

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Removal of heavy metal ions from aqueous system by ion-exchange and biosorption methods

Cited by 521 publications

References 141 publications

Removal of heavy metals from aqueous media by biosorption

Removal of heavy metals from aqueous media by biosorption

Influence of Wooden Sawdust Treatments on Cu(II) and Zn(II) Removal from Water

Exploring Metal Ion Adsorption and Antifungal Properties of Carbon‐Coated Magnetite Composite

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