Applications of chitin- and chitosan-derivatives for the detoxification of water and wastewater—a short review. Adv Colloid Interf Sci

Laboratory of Applied Environmental Chemistry, Department of Environmental Sciences, University of Kuopio, FI-50100 Mikkeli, Finland.
Advances in Colloid and Interface Science (Impact Factor: 7.78). 11/2009; 152(1-2):26-38. DOI: 10.1016/j.cis.2009.09.003
Source: PubMed


Chitin and chitosan-derivatives have gained wide attention as effective biosorbents due to low cost and high contents of amino and hydroxyl functional groups which show significant adsorption potential for the removal of various aquatic pollutants. In this review, an extensive list of chitin- and chitosan-derivatives from vast literature has been compiled and their adsorption capacities for various aquatic pollutants as available in the literature are presented. This paper will give an overview of the principal results obtained during the treatment of water and wastewater utilizing chitin and chitosan-derivatives for the removal of: (a) metal cations and metal anions; (b) radionuclides; (c) different classes of dyes; (d) phenol and substituted phenols; (e) different anions and other miscellaneous pollutants. The review provides a summary of recent information obtained using batch studies and deals with the various adsorption mechanisms involved. It is evident from the literature survey that chitin- and chitosan-derivatives have shown good potential for the removal of various aquatic pollutants. However, still there is a need to find out the practical utility of such developed adsorbents on commercial scale.

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    • "In its natural form chitin is not very useful; however, its deacetylated derivative called chitosan can have many applications [16]. Chitosan and its derivatives have been reported to be suitable for purification of water and wastewater [17]. Chitosan has high adsorption capacity for metal ions because of its ability to form chelate compounds. "
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    ABSTRACT: Industrial processes are responsible for heavy metal releases into the environment. Removal of excessive heavy metals has become a major concern, therefore, new economical and efficient methods of water treatment are now being explored. The experiments described in this paper relate to the removal of heavy metal cations from water. The adsorption process was carried out in a packed column containing foamed chitosan. Initially, a method of production of the foamed structure was developed. Subsequently, the foamed structure was properly prepared for testing. The adsorption process was continuous with constant ion concentration at the column inlet. Parameters such as sorption capacity of the chitosan bed, as well as influence of the initial ion concentration and feed flow rate were investigated. The Bohart–Adams model was used to describe the sorption dynamics.
    Desalination and water treatment 08/2015; 1-9. DOI:10.1080/19443994.2015.1085907 · 1.17 Impact Factor
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    • "It is mainly extracted from the shells of crustaceans such as crabs, shrimp, and lobsters [19] [20]. Chitin and its derivatives, in particular chitosan, have shown a significant adsorption potential for the removal of various pollutants especially heavy metals, dyes, and phenol [21] [22]. Indeed, it includes within its structure biopolymer more functional groups (carboxyl, alcool, amino group…) that can create interactions with different chemical entities such as orthophosphate ions. "
    Desalination and water treatment 07/2015; DOI:10.1080/19443994.2015.1073179 · 1.17 Impact Factor
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    • "Natural chitosan has been modified by a number of techniques to improve SOPs adsorption capacity as well as application potential in water treatment. Different kinds and shapes of chitosan such as magnetite-immobilized chitin, beads of chitosan–sodium alginate , functional chitosan, membranes, microspheres, gel beads and films were prepared and examined for eliminating various contaminants from the aquatic environment (Bhatnagar and Sillanpää, 2009). After modification, surface area and morphology of chitosan has become much more favorable for SOPs abatement. "
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    ABSTRACT: Specific organic pollutants (SOPs) such as phenolic compounds, PAHs, organic pesticides, and organic herbicides cause health and environmental problems due to their excessive toxic properties and poor biodegradability. Low-cost biosorbents are considered as a promising alternative for conventional adsorbents to remove SOPs from water. These materials have several advantages such as high sorption capacities, good modifiability and recoverability, insensitivity to toxic substances, simple operation in the treatment processes. However, previous reports on various types of biosorbents for removing SOPs are still moderately fragmented. Hence, this paper provides a comprehensive review on using typical low-cost biosorbents obtained from lignocellulose and chitin/chitosan for SOPs adsorption. Especially, their characteristics, biosorption mechanism together with utilization for eliminating SOPs are presented and discussed. The paper also gives a critical view regarding future applications of low-cost biosorbents in SOPs-contaminated water treatment. Copyright © 2015 Elsevier Ltd. All rights reserved.
    Bioresource Technology 02/2015; 182. DOI:10.1016/j.biortech.2015.02.003 · 4.49 Impact Factor
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