Nature of cross-linking matters for the conditional removal of CV from wastewater by interpenetrating network hydrogels

Nowadays purification of dye-loaded water bodies is a serious problem due to presence of coloured effluents in water released from industries. Researchers are continuously striving to develop such an economical method for wastewater treatment to make the water free from carcinogenic substances. Therefore, a novel approach has been applied for the removal of harmful dyes from wastewater by fabricating a superabsorbent interpenetrating network (IPN) hydrogels. The chemical and physical cross-linked hydrogels were successfully used for the removal of toxic dye crystal violet and found that N, NMODIFIER LETTER PRIME-methylenebisacrylamide (MBA) cross-linked hydrogel has a maximum adsorption capacity of 109.10 mg/g as compared to Fe3+ cross-linked hydrogel having an adsorption value of 106.57 mg/g. Both the IPN hydrogels follow pseudo-second-order kinetics and show three phases in the sorption mechanism due to the presence of macro-pores, meso-pores, and micro-pores in their structure. The percent removal calculated after several recycling process shows a decrease of < 10% in its removal efficiency indicating a better impact upon the economy.

Automated summary

Nowadays, the purification of dye-loaded water bodies is a significant issue due to the presence of colored effluents in industrial wastewater. In this study, researchers successfully developed an economical method using superabsorbent interpenetrating network (IPN) hydrogels to remove harmful dyes from wastewater. The IPN hydrogels exhibited high adsorption capacity and efficient recycling performance.