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Biosorption of Heavy Metals from Mining Influenced Water Onto Chitin Products by Patricio X. Pinto; Souhail R. Al-Abed; David J. Reisman is a Engineering article available to read on EtoBox.

What is Biosorption of Heavy Metals from Mining Influenced Water Onto Chitin Products about?

Mining influenced water (MIW) emanating from mine sites poses a major environmental concern due to its impact on water contamination caused by low pH and the presence of high concentrations of toxic metals. Chitorem SC-20 ® (raw crushed crab shells containing 40% (w/w) CaCO 3 , 30% protein, 20% chitin, 7% moisture, and 3% ash) and Chitorem SC-80 ® (the chitin polymer containing 88% chitin and 12% moisture) were used to evaluate heavy metals removal from MIW. It was found that SC-20 was very effective at neutralizing the strong acidity of MIW, even at loads as low as 1 g/L the equilibrium pH was neutral. At a load of 2 g/L, SC-20 showed a final pH of 7.94 with almost complete (>99.8%) removal of iron (120 mg/L), lead (1.1 mg/L) and zinc (79 mg/L), along with partial removal of cadmium (96% of 1.3 mg/L), cobalt (54% of 0.78 mg/L), copper (42% of 72 mg/L), and manganese (64% of 52 mg/L) from MIW. Metal removal was achieved primarily by neutralization and precipitation mainly due to the dissolution of the CaCO 3 from the SC-20. SC-80 was used to differentiate the effect of alkalinity and the amount of metal adsorption achievable by the chitin polymer. Lead (up to 1.24 mg/g), cadmium (u

Who reads Biosorption of Heavy Metals from Mining Influenced Water Onto Chitin Products?

Author

Patricio X. Pinto; Souhail R. Al-Abed; David J. Reisman

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1385-8947)

Published

2011

Language

EN

Field

Engineering (Physical Sciences)