Sorption of organic synthetic dyes

Comprehensive Analytical Chemistry, Volume 56 ISSN 0166-526X, DOI 10.1016/S0166-526X(10)56011-3 

The above hypercrosslinked samples have been tested under identical conditions for their ability to extract from aqueous solutions three synthetic organic dyes Malachite Green (MG), Methylene Blue (MB), and Direct Bordeaux (DB)  

500% degree of crosslinking logically reduces, parallel with decreasing water regain of these samples. 

The high potential of hypercrosshnked resins for sorption of dyes indicates that the sorbents could be successfully used to recover various dyes from wastewaters of the textile industry, in order to return the valuable chemicals again into the dyeing processes and reduce pollution of the environment. Most dyes can be easily desorbed from hypercrosshnked polystyrene with alcohols or by appropriate acidic or basic aqueous solutions, which is hardly possible in the case of activated carbons. 

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