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Published on: March 21, 2014
Plasma-enhanced modification of polysaccharides for wastewater treatment: A review
Cesar Mario Laureano-Anzaldo1, Martín Esteban González-López1, Aida Alejandra Pérez-Fonseca1
1Departamento de Ingeniería Química, CUCEI, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico.
Abstract:
In this work, novel polysaccharide-based sorbents modified with plasma technologies are discussed. Plasma selectively modifies the surface properties by generating specific moieties, enhancing adsorption performance, and the physical-chemical properties of the material without modifying its bulk properties. Among plasma technologies, cold plasma is more suitable and energy-efficient, since thermal-sensitive materials could be modified using this technology. Besides, atmospheric-pressure plasma systems possess the required features to scale-up plasma technologies for surface modification of sorbents. Moreover, a big challenge is the semi-continuous operation to modify sorbents as it would decrease overall process costs. Due to its low-cost and extensive availability, polysaccharide-based sorbents are promising substrates for plasma-enhanced modification to develop highly efficient adsorbents. The development of polysaccharide-based materials includes modified cellulose, chitosan, or lignocellulosic materials with functionalities that increase adsorption capacity and selectivity towards a specific organic or inorganic pollutant.
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