Removal of Heavy Metals from Wastewater Using Crab shells
Removal of Heavy Metals from Wastewater Using Crab shells
Removal of Heavy Metals from Wastewater Using Crab shells
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H NHCOCH 3<br />
O<br />
OH H H H<br />
H O O<br />
CH 2 OH<br />
CH 2 OH<br />
O O<br />
OH<br />
H<br />
H NHCOCH 3<br />
H<br />
H NHCOCH 3<br />
OH H<br />
O O<br />
CH 2 OH<br />
Chitin<br />
H NH 2<br />
O<br />
OH H H H<br />
H O O<br />
CH 2 OH<br />
CH 2 OH<br />
O<br />
OH<br />
H NH 2<br />
H<br />
O<br />
H<br />
H NH 2<br />
OH H<br />
O<br />
CH 2 OH<br />
O<br />
Chitosan<br />
O<br />
H<br />
OH<br />
OH<br />
H H H<br />
H O O<br />
CH 2 OH<br />
CH 2 OH<br />
O<br />
OH<br />
H OH<br />
H<br />
O<br />
H<br />
H OH<br />
OH H<br />
O<br />
CH 2 OH<br />
O<br />
Cellulose<br />
Figure 1.1 Chemical Structure <strong>of</strong> Chitin, Chitosan and Cellulose.<br />
Source: Lin, Shan-Yang; Perng, R. Chem. Pharm. Bull. 1992, 40,<br />
1058-1060