Microwave Controlled the Green Synthesis of Acrylamide Graft Copolymers of Azadirachita indica Gum for the Wastewater Management

Author(s): Rishabha Malviya*, Pramod Kumar Sharma, Susheel Kumar Dubey

Journal Name: Current Applied Polymer Science

Volume 2 , Issue 2 , 2018

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Graphical Abstract:


Background: Water pollution due to rapid industrialization becomes a critical issue. Presence of industrial dye in water is a major concern for scientific community.

Objective: The objective of the study was to synthesise acrylamide graft copolymers of Azadirachita indica (neem) gum and characterized the prepared hydrogel as a flocculating agent and ineffective removal of cationic dye methylene blue from aqueous solution.

Methods: Various batches of acrylamide graft copolymers were synthesized using microwave irradiation and evaluated for their potential to reduce turbidity when added in 1%w/v solution of kaoline (artificial wastewater). Application of graft copolymers in the removal of methylene blue from aqueous solution was also evaluated.

Results: Batch N7 prepared using 0.5%w/v solution of ceric ammonium nitrate and 10 times microwave exposure showed lowest shelf caused turbidity at the concentration level of 0.2%w/v. N7 also showed a significant reduction in the turbidity when added in 1%w/v solution of kaoline. At the dose level of 0.4g/l, N7 showed the maximum removal of methylene blue i.e. 93.04 (±3.3%). Adsorption isotherm studies carried out at 25±2°C and pH 7 showed best fit to the Langmuir isotherm model with a regression coefficient of 0.962. Adsorption of methylene blue from aqueous solution followed Pseudo second-order kinetics model with regression coefficient 0.991. Intraparticle diffusion model easily predicts that intraparticle diffusion was not rated limiting step for adsorption of methylene blue.

Conclusion: From the study, it can be concluded that acrylamide grafted neem gum polysaccharide can be effectively used for the treatment of wastewater.

Keywords: Acrylamide graft copolymers, adsorption, Azadirachita indica gum, cationic dye, flocculating agent, methylene blue.

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Article Details

Year: 2018
Page: [130 - 149]
Pages: 20
DOI: 10.2174/2452271602666180517093813
Price: $58

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