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Facile synthesis of xanthan biopolymer integrated 3D hierarchical graphene oxide/titanium dioxide composite for adsorptive lead removal in wastewater.
Bioresour Technol. 2020 Aug; 309:123296.BT

Abstract

Xanthan integrated graphene oxide functionalized by titanium dioxide was successfully prepared through facile, eco-friendly and cost effective ice-templating technique. The three-dimensional (3D) graphene composite demonstrated relatively high temperature stability, chemical functionalities and porous sponge-like structure. The adsorption of lead was favored by high initial concentration and shaking speed at the operational solution pH. The process equilibrium and kinetic adhered to the Langmuir and pseudo-second-order correlations, respectively. The biomass integrated graphene composite showed maximum adsorption capacities ranging from 132.18 to 199.22 mg/g for 30-70 °C. Moreover, it was highly regenerable under mild conditions (0.1 M hydrochloric acid, 30 °C) and used repeatedly while retaining 84.78% of its initial adsorption capacity at the fifth adsorption-regeneration cycle. With comparatively high lead adsorption capacities, adequate recyclability and environmentally friendliness, the as-prepared 3D graphene composite has high application potential in heavy metal-wastewater separation for protection of the environment and human health.

Authors+Show Affiliations

Department of Chemical and Environmental Engineering, University of Nottingham Malaysia, 43500 Semenyih, Selangor Darul Ehsan, Malaysia.Department of Chemical and Environmental Engineering, University of Nottingham Malaysia, 43500 Semenyih, Selangor Darul Ehsan, Malaysia. Electronic address: lai-yee.lee@nottingham.edu.my.Department of Chemical and Environmental Engineering, University of Nottingham Malaysia, 43500 Semenyih, Selangor Darul Ehsan, Malaysia.Department of Chemical and Environmental Engineering, University of Nottingham Malaysia, 43500 Semenyih, Selangor Darul Ehsan, Malaysia.Department of Chemical and Environmental Engineering, University of Nottingham Malaysia, 43500 Semenyih, Selangor Darul Ehsan, Malaysia.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32330800

Citation

Lai, Kar Chiew, et al. "Facile Synthesis of Xanthan Biopolymer Integrated 3D Hierarchical Graphene Oxide/titanium Dioxide Composite for Adsorptive Lead Removal in Wastewater." Bioresource Technology, vol. 309, 2020, p. 123296.
Lai KC, Lee LY, Hiew BYZ, et al. Facile synthesis of xanthan biopolymer integrated 3D hierarchical graphene oxide/titanium dioxide composite for adsorptive lead removal in wastewater. Bioresour Technol. 2020;309:123296.
Lai, K. C., Lee, L. Y., Hiew, B. Y. Z., Thangalazhy-Gopakumar, S., & Gan, S. (2020). Facile synthesis of xanthan biopolymer integrated 3D hierarchical graphene oxide/titanium dioxide composite for adsorptive lead removal in wastewater. Bioresource Technology, 309, 123296. https://doi.org/10.1016/j.biortech.2020.123296
Lai KC, et al. Facile Synthesis of Xanthan Biopolymer Integrated 3D Hierarchical Graphene Oxide/titanium Dioxide Composite for Adsorptive Lead Removal in Wastewater. Bioresour Technol. 2020;309:123296. PubMed PMID: 32330800.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Facile synthesis of xanthan biopolymer integrated 3D hierarchical graphene oxide/titanium dioxide composite for adsorptive lead removal in wastewater. AU - Lai,Kar Chiew, AU - Lee,Lai Yee, AU - Hiew,Billie Yan Zhang, AU - Thangalazhy-Gopakumar,Suchithra, AU - Gan,Suyin, Y1 - 2020/04/06/ PY - 2020/02/29/received PY - 2020/03/30/revised PY - 2020/03/31/accepted PY - 2020/4/25/pubmed PY - 2020/5/27/medline PY - 2020/4/25/entrez KW - 3D graphene/titanium oxide KW - Equilibrium and kinetic KW - Lead adsorption KW - Regeneration KW - Xanthan biopolymer SP - 123296 EP - 123296 JF - Bioresource technology JO - Bioresour. Technol. VL - 309 N2 - Xanthan integrated graphene oxide functionalized by titanium dioxide was successfully prepared through facile, eco-friendly and cost effective ice-templating technique. The three-dimensional (3D) graphene composite demonstrated relatively high temperature stability, chemical functionalities and porous sponge-like structure. The adsorption of lead was favored by high initial concentration and shaking speed at the operational solution pH. The process equilibrium and kinetic adhered to the Langmuir and pseudo-second-order correlations, respectively. The biomass integrated graphene composite showed maximum adsorption capacities ranging from 132.18 to 199.22 mg/g for 30-70 °C. Moreover, it was highly regenerable under mild conditions (0.1 M hydrochloric acid, 30 °C) and used repeatedly while retaining 84.78% of its initial adsorption capacity at the fifth adsorption-regeneration cycle. With comparatively high lead adsorption capacities, adequate recyclability and environmentally friendliness, the as-prepared 3D graphene composite has high application potential in heavy metal-wastewater separation for protection of the environment and human health. SN - 1873-2976 UR - https://www.unboundmedicine.com/medline/citation/32330800/Facile_synthesis_of_xanthan_biopolymer_integrated_3D_hierarchical_graphene_oxide/titanium_dioxide_composite_for_adsorptive_lead_removal_in_wastewater L2 - https://linkinghub.elsevier.com/retrieve/pii/S0960-8524(20)30568-X DB - PRIME DP - Unbound Medicine ER -