The bioremediation of water and soil, from heavy metal (HM) contamination, is a continuing worldwide demand. Chitosan, as a promising bioactive polymer, was produced from grown fungal (Cunninghamella elegans) mycelia and had a molecular weight of 112 kDa and a deacetylation degree of 87%. Sodium tripolyphosphate was applied for the synthesis of chitosan nanoparticles (NCt) from fungal chitosan (Cts); the particle size of produced NCt was in range of 5-45 nm. The produced biopolymers were used for HM absorption, Pb and Cu at concentration range of 100-300 ppm, from aqueous solution and soil matrix. Both Cts and NCt had high adsorption capacity toward the examined HM, with higher affinity as adsorbents to Pb than to adsorb Cu from water or after amendment of soil matrix. The produced NCt particles were highly effective than bulk Cts for the remediation and biosorption of contaminant metals, Pb and Cu. Both Cts and NCt could be effectually applied as amendments in HM-contaminated soils for their bioremediation.
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http://dx.doi.org/10.1016/j.ijbiomac.2018.07.103 | DOI Listing |
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