Mercury Sorption on Chitosan

Campos, Karol; Guibal, Eric; Peirano, Francisco; Ly, Martha; Maldonado, Holger

doi:10.4028/www.scientific.net/amr.20-21.635

Cited by 3 publications

(3 citation statements)

References 20 publications

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“…A number of papers have revealed the efficiency of chitosan for the elimination of a variety of heavy metals like As(V) and As(III) [58,59], Hg(II) [60,61], U(VI) [15,[61][62][63][64][65], Cd(II) and Hg(II) [15], These articles were dedicated to investigating the effect of pH and ionic strength on the adsorption of metal ions [66][67][68][69][70]. Yang et al [71] studied the adsorption of various hazardous metal ions such as Cu(II), Zn(II), Cd(II), Cr(VI), and Pb(II) using chitosan [39].…”

Section: Metal Ion Removal By Alginate Chitosan and Related Adsorbent...mentioning

confidence: 99%

Some Well-Known Alginate and Chitosan Modifications Used in Adsorption: A Review

Benettayeb

Ghosh

Usman

et al. 2022

Water

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Owing to environmental pollution and increasingly strict regulations, heavy metals have attracted the attention of many researchers in various disciplines. Alginate and chitosan derivatives have gained popularity as biosorbents for water treatment. An increase in the number of publications on modified biosorbents for the biosorption of toxic compounds reveals widespread interest in examining the requirements and positive contribution of each modification type. This paper reviews the advantages and disadvantages of using alginate and chitosan for adsorption. Well-known modifications based on chitosan and alginate, namely, grafting, functionalization, copolymerization and cross-linking, as well as applications in the field of adsorption processes, especially amino acid functionalization, are reviewed. The selection criteria for the best biosorbents and their effectiveness and proposed mechanism of adsorption are discussed critically. In the conclusion, the question of why these adsorbents need modification before use is addressed.

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Section: Metal Ion Removal By Alginate Chitosan and Related Adsorbent...mentioning

confidence: 99%

Some Well-Known Alginate and Chitosan Modifications Used in Adsorption: A Review

Benettayeb

Ghosh

Usman

et al. 2022

Water

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“…The kinetics of adsorbate to the mineral surface binding sites was controlled by the mass transfer constant constant K f . Here, C t /C 0 vs. time provided the slopes of the curves derived from Equation (4) [36,5]:…”

Section: Batch Mode Adsorption Experimentsmentioning

confidence: 99%

Synthesis and characterization of goethite coated with copper oxide and its effect on the removal of aqueous mercury(II) ions

Egirani

Poyi

Wessey

et al. 2018

Journal of Taibah University for Science

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This paper has investigated the synthesis and characterization of CuO-coated goethite and its application in the removal of mercury. The presence of CuO coating significantly modified the adsorption pattern of mercury on goethite. The synthesis was carried out in a trimetric manner and characterization was conducted using standard laboratory procedures. Batch mode technique under reducing conditions at ambient temperature was used to determine mercury adsorption on CuO-coated goethite. Reaction mechanism indicated a less than one proton coefficient (0.68), an intraparticle diffusion that was controlled by boundary layer, an intercept C equals to 444.45, =0 and mass transfer rates (8.752 -6 cm h -1 and 7.216 -7 cm h -1 ) higher than those of previous studies. ARTICLE HISTORY

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“…Hence, it is increasing importance to the remove and recovery of mercury from hazardous wastewaters before they are discharged into the environment and to provide a requalification of polluted natural water bodies. The conventional treatment methods for mercury-contained effluents include algae, chitosan, fly-ach bed, ion-exchange and activated carbon adsorption [5][6][7][8][9]. Despite the fact that a variety of treatment methods are available, there is still a lack of effective, cheap means for the treatment of mercury containing wastewaters.…”

Section: Introductionmentioning

confidence: 99%

Removal of Mercury from Wastewater by Adsorption Using Thiol-Functionalized Eggshell Membrane

Cheng

et al. 2010

AMR

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The thiol-functionalized eggshell membrane (TF-ESM) was prepared by esterification between thioglycolic acid (CH2SHCOOH) and oxygen-containing functional groups on eggshell membrane (ESM). A promising potential biosorbent, TF-ESM, was used for the removal of toxic mercury in wastewater. Aqueous of mercury ions removing properties by TF-ESM were studied through batch experiments. The results indicated that the modified ESM has greatly enhanced the adsorption capacity for Hg2+, the maximum capacity was increased more than 3-fold in comparison with the unmodified ESM, from 19.4 mg g-1 to 71.9 mg g-1. The optimum of pH value for Hg adsorption was in the range of 2-8, which the removing rate over 96%. The results obtained show that the novel thiol-functionalized eggshell membrane performed well the removal and recovery of mercury from low concentration wastewaters.

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Mercury Sorption on Chitosan

Cited by 3 publications

References 20 publications

Some Well-Known Alginate and Chitosan Modifications Used in Adsorption: A Review

Some Well-Known Alginate and Chitosan Modifications Used in Adsorption: A Review

Synthesis and characterization of goethite coated with copper oxide and its effect on the removal of aqueous mercury(II) ions

Removal of Mercury from Wastewater by Adsorption Using Thiol-Functionalized Eggshell Membrane

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