Fabrication and characterization of Gum arabic-cl-poly(acrylamide) nanohydrogel for effective adsorption of crystal violet dye

Sharma, Gaurav; Kumar, Amit; Naushad, Mu.; García‐Peñas, Alberto; Al-Muhtaseb, Ala’a H.; Ghfar, Ayman A.; Sharma, Vikrant; Ahamad, Tansir; Stadler, Florian J.

doi:10.1016/j.carbpol.2018.09.004

Cited by 202 publications

(44 citation statements)

References 53 publications

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“…It can be seen from Fig. 5c that the percent removal of Fe(II) and Cu(II) increased with the increase in temperature, indicating that their adsorption onto adsorbents is endothermic [46,47]. For Ni(II) however, the percent removal decreased, indicating exothermic adsorption of Ni(II) [37].…”

Section: Effect Of Temperaturementioning

confidence: 89%

Heavy metal removal from industrial effluent using bio-sorbent blends

Sreedhar

Reddy

2019

SN Appl. Sci.

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There is extensive literature on the use of adsorbents derived from waste to treat industrial effluents containing heavy metal ions. However, there is limited information on the use of adsorbent blends. This is applicable for treating effluents which contain a number of heavy metals, so any one single adsorbent may not be suitable for achieving high percent removal of all ions. The present work employs adsorbent blends to treat an electrochemical effluent in batch mode. This work aims to provide valuable insights on the interaction of heavy metals with the adsorbents in blends. Effluent from an electrochemical industry was treated with blends of calcium bentonite, fly ash and wheat bran in different compositions to remove heavy metal ions (Fe, Ni, Cu, As, Zn, Cd) from an aqueous effluent solution. The optimal set of conditions identified were pH, 5-7; contact time, 60-90 min; agitation speed of 200 rpm; adsorbent dosage of 1 g/50 mL; and particle size of 150-300 μ. Metal ions arsenic, zinc and cadmium were completely removed. The percentage removal of (Fe, Ni, Cu) metal ions was in the order Fe(II)(96.73%) > Ni(II)(74.03%) > Cu(II)(70.70%) at optimum conditions in a short equilibrium time of 90 min. Batch experiments were conducted to determine the factors such as adsorbent composition, temperature, pH, agitation speed, dosage, contact time and particle size affecting adsorption, and all these parameters were found to strongly influence the adsorption. Experimental data were analyzed for Langmuir and Freundlich isotherms. Langmuir isotherm shows the maximum adsorption capacities were in order Fe(II)146.1 mg/g > Ni(II) 115.9 mg/g > Cu(II) 74.5 mg/g. Freundlich parameter 'n' was found to be greater than 1 which showed that the adsorption is feasible for all three metals. Freundlich isotherm fit the data comparatively better, but neither of the two isotherms satisfactorily explained the adsorption, which indicated heterogeneity of adsorption. Kinetic studies were performed and analyzed for pseudo-first-and pseudo-second-order kinetics and the Weber-Morris intraparticle diffusion model. The adsorption data fit accurately to pseudo-second-order kinetic model with coefficient of correlation values greater than 0.99 for all three heavy metals. The kinetic constants were found to be 8.49 * 10 −3 , 5.82 * 10 −3 , 5.27 * 10 −3 g mg min for Fe(II), Ni(II) and Cu(II), respectively. From the intraparticle diffusion model, it was inferred that there were different rate-limiting steps during the duration of the adsorption process, including intraparticle diffusion and boundary layer diffusion.

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Section: Effect Of Temperaturementioning

confidence: 89%

Heavy metal removal from industrial effluent using bio-sorbent blends

Sreedhar

Reddy

2019

SN Appl. Sci.

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“…For example biocompatibility and biodegradability of P(NIPAM-Am) and P(NIPAM-Am-IM) polymer microgels should be studied in detail to practically apply them in biomedical eld. Various polymer based materials have been reported for environmental applications to extract/ degrade toxic substances [94][95][96][97][98][99][100][101][102][103][104] but this aspect of P(NIPAM-Am) and P(NIPAM-Am-IM) microgels has been rarely explored in literature. Silver nanoparticles loaded polymeric material has been extensively reported for antibacterial applications [105][106][107] but antibacterial behavior of silver nanoparticles loaded in P(NIPAM-Am) and P(NIPAM-Am-IM) microgels may be a subject of future studies in this area.…”

Section: Summary and Future Perspectivementioning

confidence: 99%

Fundamentals and applications of acrylamide based microgels and their hybrids: a review

et al. 2019

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“…pH solution influences the overall feature of the adsorbate and adsorbent 18 , and it also controls the electrostatic interaction between adsorbate and adsorbent 19 . The adsorbent chemical properties depend extremely on the solution pH 18 . The influence of pH on the recovery of Co(II) and Hg(II) of the immobilized thermophilic A. kestanboliensis on XAD-4 resin was investigated in the pH varieties of 2.0 to 9.0 (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…preparation of the Dried Dead Anoxybacillus kestanboliensis and loaded Biomass. The preparation of dried dead A. kestanboliensis and the loading of bacteria on XAD-4 was prepared according to Ozdemir, et al 17 and Ozdemir, et al 18 with some modification.…”

Section: Methodsmentioning

confidence: 99%

A Novel Biosorbent for Preconcentrations of Co(II) and Hg(II) in Real Samples

Özdemir

Kılınç

Şen

2020

Sci Rep

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A new biosorbent, composed of Amberlite XAD-4 loaded with Anoxybacillus kestanboliensis, was developed and surface morphologies were investigated by SeM and ft-iR. it was used for solid phase column preconcentrations of co(ii) and Hg(ii) before their measurements by icp-oeS. LoDs were calculated as 0.04 and 0.06 ng mL −1 for co(ii) and Hg(ii) respectively. the maximum biosorption capacities were determined as 24.3 and 27.8 mg g −1 for co(ii) and Hg(ii) respectively. preconcentration factors were achieved for Co(II) and Hg(II) as 80. The method validation was performed by analyzing certified reference materials. The new process was successfully utilized for the preconcentration of these metals in various food samples. it should be highlighted that the sensitivity of icp-oeS was critically improved by applying developed method. Hence, ICP-OES could be an effective alternative for icp-MS and/or Gf-AAS.Some metal ions are known to be highly toxic. Therefore, a number of recent studies have focused on metal ion toxicity and carcinogenicity on human beings and other living organisms even at very low levels 1,2 . Among the various types of pollutants, toxic metal ions cannot be easily eliminated from nature 3 . Accumulation of toxic and deleterious metal ions in soft tissues of animals and humans even at low concentrations could be a major concern as they are not metabolized and can create significant damage to the body tissues 4 . Co and Hg are two typical metal ions in environmental samples which are also detected in plants and food samples. Toxicological influences such as vasodilation and cardiomyopathy are reported for Co exposure. Hg is also familiar as it is the most neurotoxic metal ion and can harm most of the human systems 3 .The usage of the biological processes is an idea for the operation of environmental metal pollution. Biological processes for the bioremediation depend on the physical nature of binding sites and chemical conditions 4 . The utilization of biomass, including alive and dead microorganisms in the possibly retention and removal of metal ions from environmental samples, has acquired significant reliability over the past few years due to its efficiency, ecofriendliness and economic choice. The major properties of biosorbents are (a) having a variety of metal binding sites, (b) having small and identical sizes, (c) being less subject to interference from alkali-earth and alkali metals than ion-exchange resins (d) being generally cheaper than functionalized polymers (e) having the possibility to be obtained via green technologies 5 .Concentrations of toxic metal ions are known as trace levels that are lower than the quantification limit of the instruments 6 . The determination, separation and analysis of low concentration of toxic metal ions in natural samples such as soil, food and water have become significant 7 . Therefore, it is necessary to develop analytical methods to preconcentrate and determine trace metal ions 6 .Alternative methods are recommended for the preconcentration and separatio...

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Fabrication and characterization of Gum arabic-cl-poly(acrylamide) nanohydrogel for effective adsorption of crystal violet dye

Cited by 202 publications

References 53 publications

Heavy metal removal from industrial effluent using bio-sorbent blends

Heavy metal removal from industrial effluent using bio-sorbent blends

Fundamentals and applications of acrylamide based microgels and their hybrids: a review

A Novel Biosorbent for Preconcentrations of Co(II) and Hg(II) in Real Samples

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