Correlation between surface energy and uptake behavior of radiation-grafted methacrylic acid-g-LDPE

Chaudhari, C. V.; Dubey, K.A.; Goel, Narendra S.; Bhardwaj, Y.K.; Varshney, Lalit

doi:10.1007/s00289-012-0767-1

Cited by 10 publications

(1 citation statement)

References 28 publications

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“…Water pollution due to the effluent discharged from dye, textile, metal finishing, and associated industry is an area of serious concern [1][2][3][4]. Such contamination leads to high level of toxic metal ions, high COD and BOD, and coloration of the wastewater stream which creates havoc with marine life and associated food chain [5].…”

Section: Introductionmentioning

confidence: 99%

Sorption of acid and basic dyes on radiation-grafted Teflon scrap: equilibrium and kinetic sorption studies

et al. 2016

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Mutual radiation grafting technique using Co-60 gamma radiation has been used to graft glycidylmethacrylate (GMA) to Teflon scrap. Cationic and anionic adsorbents were prepared from GMA-grafted Teflon scrap (GMA-g-Teflon) by converting epoxy ring into sulphonic acid and triamine groups by doing suitable chemical reactions at elevated temperatures. The converted grafted product was studied for its dye uptake properties from manufactured aqueous dye solution. Uptake of basic dyes namely, Basic red 29 (BR-29) and anionic dye namely, Remazol brilliant blue-1 (RB-1) was investigated. Langmuir and Freundlich adsorption models were used to analyze equilibrium adsorption, while kinetics of adsorption was analyzed using pseudo-first-order, pseudo-second-order models. The equilibrium adsorption of BR-29 and RB-1 was better explained by Langmuir adsorption model. Separation factor (R L ) was found to be in the range 0 \ R L \ 1, indicating favorable adsorption of basic and acidic dyes. Higher coefficient of determination (or regression) (r 2 ) and better agreement between q e,cal (calculated) and q e,exp (experimental) values were obtained for pseudo-second-order kinetic model.

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