Application of Xanthan gum/ n-acetyl cysteine modified mica bionanocomposite as an adsorbent for the removal of toxic heavy metals

被引：14

作者：

Ahmad R. ^{[1
]}

Mirza A. ^{[1
]}

机构：

[1] Environmental Research Laboratory, Department of Applied Chemistry, Aligarh Muslim University, Aligarh

来源：

Groundwater for Sustainable Development | 2018年 / 7卷

关键词：

Adsorption; Bionanocomposite; Characterization; Toxic heavy metal;

D O I：

10.1016/j.gsd.2018.03.010

中图分类号：

学科分类号：

摘要：

Ecofriendly bionanocomposite were fabricated and applied as an adsorbent for scavenging Pb(II), Cu(II) and Ni(II) from aqueous solution by batch adsorption studies. Structural characterization were successfully conducted using SEM, EDX, FTIR, XRD and TGA-DTG analysis. The effect of contact time and pH were investigated indicating maximum adsorption were achieved at pH 4,5 and 4; and contact time 60 min, 60 min and 120 min, for Pb(II), Cu(II) and Ni(II), respectively. The point of zero charge for bionanocomposite was found to be 7.5. Adsorption isotherm data were reliably described by the Langmuir model for all metal ions at the temperature range (303–323 K). The monolayer adsorption capacity increases with increasing temperature. The monolayer adsorption capacity at 323 K for Pb(II), Cu(II) and Ni(II) were 530.54, 177.2 and 51.48 mg g−1, respectively. The thermodynamic analysis revealed that the adsorption of metal ions onto bionanocomposite was spontaneous and endothermic with increased randomness at solid/liquid interface. Desorption was best described by HCl for all metal ions. Therefore, the present bionanocomposite (Xanthan Gum/n-acetyl cysteine-Mica) have been proved to be a potential adsorbent that could be applied for the removal of toxic heavy metal from wastewater. © 2018

引用

页码：101 / 108

页数：7

共 37 条

[1]

Ahmad R., Kumar R., Conducting polyaniline/Iron oxide composite: a novel adsorbent for the removal of Amido Black 10B, J. Chem. Eng. Data, 55, pp. 3489-3493, (2010)

[2]

Ahmad R., Haseeb S., Adsorption of Pb(II) on Mentha piperita carbon (MTC) in single and quaternary systems, Arab. J. Chem., (2013)

[3]

Ahmad R., Haseeb S., Black cumin seed (BCS): a non conventional adsorbent for the removal of Cu(II) from aqueous solution, Desalin. Water Treat., (2014)

[4]

Ahmad R., Mirza A., Sequestration of heavy metal ions by Methionine modified bentonite/Alginate (Meth-bent/Alg): a bionanocomposite, Groundw. Sustain. Dev., 1, pp. 50-58, (2015)

[5]

Argin-Soysal S., Kofinas P., Lo Y.M., Effect of complexation conditions on xanthan-chitosan polyelectrolyte complex gels, Food Hydrocoll., 23, pp. 202-209, (2009)

[6]

Auta M., Hameed B.H., Coalesced chitosan activated carbon composite for batch and fixed-bed adsorption of cationic and anionic dyes, Colloids Surf. B: Biointerfaces, 105, pp. 199-206, (2013)

[7]

Badruddoza A.Z.M., Shawon Z.B.Z., Daniel T.W.J., Hidajat K., Uddin M.S., Fe3O4/ cyclodextrin polymer nanocomposites for selective heavy metals removal from industrial wastewater, Carbohydr. Polym., 91, pp. 322-332, (2013)

[8]

Barakat M.A., Kumar R., Synthesis and characterization of porous magnetic silica composite for the removal of heavy metals from aqueous solution, J. Ind. Eng. Chem., (2014)

[9]

Bothara S.B., Singh S., Thermal studies on natural polysaccharide, Asian Pac. J. Trop. Biomed., pp. S1031-S1035, (2012)

[10]

Dong S., Zhang H., Pang Z., Liu Y., Zhang F., Sulfonated modification of cotton linter and its application as adsorbent for high-efficiency removal of lead (II) in effluent, Bioresour. Technol., 146, pp. 512-518, (2013)

← 1 2 3 4 →