ABSTRACT
Water is a scarce resource. Only 0.03% of the world’s water reserves are available for human activities. Population growth and industrial boom have increased the demand for water, while supply has remained constant. Moreover, inappropriate water management has reduced the amount of available resources (Allegre et al. 2004). As environmental protection is becoming an important global problem, industries are nding novel ways of developing technologies that do not cause environmental problems. There are several techniques used for wastewater treatment. The discharge of
39.1 Introduction .......................................................................................................................... 561 39.2 Preparation and Properties of Chitin and Chitosan .............................................................. 562
39.2.1 Chitin ........................................................................................................................ 562 39.2.2 Chitosan .................................................................................................................... 563
39.3 Modication of Chitin and Chitosan .................................................................................... 563 39.3.1 Modied Chitin and Chitosan .................................................................................. 563 39.3.2 Physical Modication of Chitin and Chitosan ..........................................................564 39.3.3 Chemical Modication of Chitin and Chitosan ........................................................564
