Adsorption of heavy metal ions by various low-cost adsorbents: a review

Chakraborty, Rupa; Asthana, Anupama; Singh, Ajaya Kumar; Jain, Bhawana; Susan, Md. Abu Bin Hasan

doi:10.1080/03067319.2020.1722811

Cited by 381 publications

(174 citation statements)

References 250 publications

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“…However, other tested lignites exhibited higher adsorption capacities [27,30,53]. It is important to underline that the observed lignite adsorption capacities of Cd and Cu are also higher than various other agricultural, animal and industrial wastes [54,55]. As compared to natural agricultural wastes, Cd adsorption capacity of the studied lignite was about 7.5 and 2.3 higher than corncob [56] and rice husk [57], respectively.…”

Section: Isotherm Adsorptionmentioning

confidence: 73%

Use of Lignite as a Low-Cost Material for Cadmium and Copper Removal from Aqueous Solutions: Assessment of Adsorption Characteristics and Exploration of Involved Mechanisms

Jellali

Azzaz

Jeguirim

et al. 2021

Water

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Lignite, as an available and low-cost material, was tested for cadmium (Cd) and copper (Cu) removal from aqueous solutions under various static experimental conditions. Experimental results showed that the removal efficiency of both metals was improved by increasing their initial concentrations, adsorbent dosage and aqueous pH values. The adsorption kinetic was very rapid for Cd since about 78% of the totally adsorbed amounts were removed after a contact time of only 1 min. For Cd and Cu, the kinetic and isothermal data were well fitted with pseudo-second order and Freundlich models, respectively, which suggests that Cd/Cu removal by lignite occurs heterogeneously on multilayers surfaces. The maximum Langmuir’s adsorption capacities of Cd and Cu were assessed to 38.0 and 21.4 mg g−1 and are relatively important compared to some other lignites and raw natural materials. Results of proximate, scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS), Fourier transform infrared spectroscopy (FTIR) and X-Ray diffraction (XRD) showed that the removal of these metals occurs most likely through a combination of cation exchange and complexation with specific functional groups. The relatively high adsorption capacity of the used lignite promotes its future use as a low cost material for Cd and Cu removal from effluents, and possibly for other heavy metals or groups of pollutants.

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Section: Isotherm Adsorptionmentioning

confidence: 73%

Use of Lignite as a Low-Cost Material for Cadmium and Copper Removal from Aqueous Solutions: Assessment of Adsorption Characteristics and Exploration of Involved Mechanisms

Jellali

Azzaz

Jeguirim

et al. 2021

Water

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“…In recent years, the adsorption method has been found to be appropriate for the removal of contaminants from polluted water samples. Moreover, the adsorption method was found to be low-cost, easy to use, eco-friendly, and highly effective compared to earlier methods [ 28 , 29 , 30 ]. The adsorption method comprises the separation and aggregation of target analytes from one stage to another [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the adsorption method was found to be low-cost, easy to use, eco-friendly, and highly effective compared to earlier methods [ 28 , 29 , 30 ]. The adsorption method comprises the separation and aggregation of target analytes from one stage to another [ 30 ]. The adsorption system is quite easy to work with and is very effective in the elimination of deadly contaminants at low levels [ 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Removal of Chromium(III) and Cadmium(II) Heavy Metal Ions from Aqueous Solutions Using Treated Date Seeds: An Eco-Friendly Method

et al. 2021

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The aim of the research was to prepare low-cost adsorbents, including raw date pits and chemically treated date pits, and to apply these materials to investigate the adsorption behavior of Cr(III) and Cd(II) ions from wastewater. The prepared materials were characterized using SEM, FT-IR and BET surface analysis techniques for investigating the surface morphology, particle size, pore size and surface functionalities of the materials. A series of adsorption processes was conducted in a batch system and optimized by investigating various parameters such as solution pH, contact time, initial metal concentrations and adsorbent dosage. The optimum pH for achieving maximum adsorption capacity was found to be approximately 7.8. The determination of metal ions was conducted using atomic adsorption spectrometry. The experimental results were fitted using isotherm Langmuir and Freundlich equations, and maximum monolayer adsorption capacities for Cr(III) and Cd(II) at 323 K were 1428.5 and 1302.0 mg/g (treated majdool date pits adsorbent) and 1228.5 and 1182.0 mg/g (treated sagai date pits adsorbent), respectively. It was found that the adsorption capacity of H2O2-treated date pits was higher than that of untreated DP. Recovery studies showed maximal metal elution with 0.1 M HCl for all the adsorbents. An 83.3–88.2% and 81.8–86.8% drop in Cr(III) and Cd(II) adsorption, respectively, were found after the five regeneration cycles. The results showed that the Langmuir model gave slightly better results than the Freundlich model for the untreated and treated date pits. Hence, the results demonstrated that the prepared materials could be a low-cost and eco-friendly choice for the remediation of Cr(III) and Cd(II) contaminants from an aqueous solution.

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“…The high R value of 0.999 each for Cr (III) and Cr (VI) was obtained from pseudo second order kinetic model. Also, the calculated value of q was closer to the (Bernard and Jimoh, 2013;Chakraborty et al, 2020) which involves sharing of electrons between adsorbents and adsorbate (Deng et al, 2009). To obtain valid information pertaining to process involved in the adsorption mechanism, the data were further examined by intra particle diffusion model.…”

Section: O N L I N E C O P ÿmentioning

confidence: 71%

Biosorption of chromium ions through modified Eichhornia crassipes biomass form the aqueous medium

Parameswari¹,

Premalatha²,

Davamani³

et al. 2021

JEB

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Aim: To explore the potential of water hyacinth biomass as a low cost adsorbent for sequestrating chromium ions from aqueous solution. Methodology: The biosorption behavior of chromium ions (Cr(III) and Cr(VI)) from aqueous solution by powdered water hyacinth biomass was assessed through series of batch experiments using advanced instrumentation techniques like Scanning Electron Microscopy with Energy Dispersive X-ray analysis and Fourier Transform Infra-Red spectroscopy, pH zero point charge. The equilibrium relationship between sorbent and sorbate was determined in solution by using the isotherms Langmuir, Freundlich and Temkin models. Results: The optimum pH for Cr(III) and Cr(VI) adsorption was 5.0 and 2.0 whereas the maximum Cr(III) and Cr(VI) adsorption was 99.80 and 89.15%, respectively. Langmuir isotherm fitted the data well with R2 value of 0.999 for both Cr(III) and Cr(VI) by the biosorbent. Adsorption kinetics showed that the experimental data fitted the pseudo second order kinetic model with R2 value of 0.999 for both Cr(III) and Cr(VI). The EDX spectra peaks of Ca, O, C indicated the presence of functional groups such as –OH and –COOH in the biosorbent. The zeta potential analysis depicted that water hyacinth biomass had negative surface charge of (-) 23.5mV. Interpretation: Water hyacinth based biosorbent can be utilized for the removal of Cr ions from industrial waste water. Further, water hyacinth has additional advantage that it reduces or even eliminates the diverse impact of weeds on the environment. Key words: Biosorption, Chromium removal, Water hyacinth

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Adsorption of heavy metal ions by various low-cost adsorbents: a review

Cited by 381 publications

References 250 publications

Use of Lignite as a Low-Cost Material for Cadmium and Copper Removal from Aqueous Solutions: Assessment of Adsorption Characteristics and Exploration of Involved Mechanisms

Use of Lignite as a Low-Cost Material for Cadmium and Copper Removal from Aqueous Solutions: Assessment of Adsorption Characteristics and Exploration of Involved Mechanisms

Removal of Chromium(III) and Cadmium(II) Heavy Metal Ions from Aqueous Solutions Using Treated Date Seeds: An Eco-Friendly Method

Biosorption of chromium ions through modified Eichhornia crassipes biomass form the aqueous medium

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