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Study on cellulose microfilaments based composite spheres: Microwave-assisted synthesis, characterization, and application in pollutant removal.
Li, Yuan; Xiao, Huining; Pan, Yuanfeng; Zhang, Min; Ni, Shuzhen; Hou, Xiaobang; Hu, Erfeng.
Afiliación
  • Li Y; Department of Chemical Engineering, University of New Brunswick, 15 Dineen Dr, Fredericton, NB, E3B 5A3, Canada.
  • Xiao H; Department of Chemical Engineering, University of New Brunswick, 15 Dineen Dr, Fredericton, NB, E3B 5A3, Canada. Electronic address: hxiao@unb.ca.
  • Pan Y; Guangxi Key Lab of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, 100 Daxue Rd, Nanning, 530004, China. Electronic address: panyf@gxu.edu.cn.
  • Zhang M; Department of Chemical Engineering, University of New Brunswick, 15 Dineen Dr, Fredericton, NB, E3B 5A3, Canada.
  • Ni S; Department of Chemical Engineering, University of New Brunswick, 15 Dineen Dr, Fredericton, NB, E3B 5A3, Canada.
  • Hou X; Department of Environmental Science and Engineering, North China Electric Power University, 689 Huadian Rd, Baoding, 071003, China.
  • Hu E; Key Laboratory of Energy Resource Utilization from Agriculture Residue, Chinese Academy of Agricultural Engineering, Beijing 100125, China.
J Environ Manage ; 228: 85-92, 2018 Dec 15.
Article en En | MEDLINE | ID: mdl-30212678
A novel study of synthesizing the temperature-responsive polymer grafted cellulose filaments/Poly (N-isopropylacrylamide) (NIPAM) spheres (P-MCCBs) was carried out for the removal of dyes and heavy metal ions. The novelty of the presented work consists of the application of the nano-sized pore-forming agent (Calcium Carbonate) and the introduction of a temperature-responsive monomer (NIPAM) while preparing the adsorbents. In addition, the spherical adsorbents were synthesized through an in-situ free radical polymerization using a microwave-assisted heating approach. The morphology, chemical structure, pH, and thermal sensitivity of P-MCCBs were characterized properly. The adsorption and desorption behaviors of dyes and heavy metal ions on P-MCCBs were also investigated. The results showed that P-MCCBs exhibited a fast adsorption rate, the adsorption equilibrium reached within 80 min and 40 min for MB and Pb2+, respectively (25 °C). Moreover, around 5-8% and 20% of adsorbed MB and Pb2+ were released at the temperature above 45 °C. The adsorption kinetics followed pseudo-second-order model, and the desorption process was fit well using Higuchi and Korsmeyer-Peppas models. These results indicated that P-MCCBs could be served as a novel material for controllable adsorption and desorption processes of various contaminants.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Citoesqueleto de Actina / Celulosa Idioma: En Revista: J Environ Manage Año: 2018 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Reino Unido

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Citoesqueleto de Actina / Celulosa Idioma: En Revista: J Environ Manage Año: 2018 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Reino Unido