Soil emendation with nano-fungal chitosan for heavy metals biosorption.

Int J Biol Macromol

College of Science and Humanitarian Studies, Shaqra University, Qwaieah 11971, Saudi Arabia; Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Egypt.

Published: October 2018

AI Article Synopsis

  • - The bioremediation of soil and water from heavy metal contamination is crucial, and chitosan derived from fungal mycelia shows promise as a solution with a favorable molecular structure.
  • - Chitosan nanoparticles (NCt), synthesized using sodium tripolyphosphate, have particle sizes between 5-45 nm and exhibit a superior capacity for absorbing heavy metals like lead (Pb) and copper (Cu).
  • - Both chitosan and its nanoparticles are effective in removing heavy metals from contaminated environments, with NCt demonstrating a higher efficiency than bulk chitosan, making them valuable for soil and water decontamination efforts.

Article Abstract

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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Source
http://dx.doi.org/10.1016/j.ijbiomac.2018.07.103DOI Listing

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