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  3. Guar gum-crosslinked-Soya lecithin nanohydrogel sheets as effective adsorbent for the removal of thiophanate methyl fungicide

Guar gum-crosslinked-Soya lecithin nanohydrogel sheets as effective adsorbent for the removal of thiophanate methyl fungicide

  • Int J Biol Macromol. 2018 Jul 15;114:295-305. doi: 10.1016/j.ijbiomac.2018.03.093.
Gaurav Sharma 1,  Amit Kumar 2,  Kunjana Devi 3,  Shweta Sharma 3,  Mu Naushad 4,  Ayman A Ghfar 4,  Tansir Ahamad 4,  Florian J Stadler 5
Affiliations

Affiliations

  • 1 College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab. for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen 518060, PR China; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China; School of Chemistry, Shoolini University, Solan 173212, Himachal Pradesh, India. Electronic address: gaurav8777@gmail.com.
  • 2 College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab. for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen 518060, PR China; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China; School of Chemistry, Shoolini University, Solan 173212, Himachal Pradesh, India.
  • 3 School of Chemistry, Shoolini University, Solan 173212, Himachal Pradesh, India.
  • 4 Department of Chemistry, College of Science, Bld.#5, King Saud University, Riyadh 11451, Saudi Arabia.
  • 5 College of Materials Science and Engineering, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Nanshan District Key Lab. for Biopolymers and Safety Evaluation, Shenzhen University, Shenzhen 518060, PR China. Electronic address: fjstadler@szu.edu.cn.
PMID: 29572143 DOI: 10.1016/j.ijbiomac.2018.03.093
Abstract

Rapid increase in use of fungicides for the agricultural and industrial purposes has marked the deterioration of water resources which ultimately affects the human life. Accordingly, various attempts have been made in the removal of these noxious compounds. In the same context, we are presenting biopolymers based nanohydrogel sheets; guar gum-crosslinked-Soya lecithin nanohydrogel sheets (GG-crosslinked-SY NHS) used for the effective removal of a fungicide; thiophanate methyl from aqueous solution. Guar gum and soya lecithin were employed as the biopolymers in the fabrication of nanohydrogel sheets due to their non- toxic nature, easy availability, cheapness and significant properties. Due to the presence of highly reactive functional groups onto the surface of GG-crosslinked-SY NHS, good adsorption results have been obtained. Maximum adsorption capacity of 59.205mg/g was observed with 20mg GG-crosslinked-SY NHS and 25ppm thiophanate methyl solution concentration as calculated from the Langmuir isotherm. Results showed that neutral pH favoured the adsorption process. Kinetics results were indicative of the physical interactions between the thiophanate methyl and GG-crosslinked-SY NHS surface. Thermodynamic results have shown the spontaneous and endothermic adsorption process.

Keywords

Adsorption; Biopolymers; Guar gum; Nanohydrogel sheets; Thiophanate methyl.

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