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- W2372632789 abstract "Modified bentonites have been used as an adsorbent for environmental remediation. An experiment was designed to examine the adsorption of phenol on bentonites modified by a mixture of amphoteric modifier, dodecyl dimethyl betaine(BS-12), and cationic modifier,hexadecyltrimethylammonium bromide(CTMAB)as influenced by modifier ratios, ionic strength, temperature and pH. Adsorption capacity of phenol on bentonites was in order of 100BS+100CT(100%BS-12+100%CTMAB)100BS+50CT(100%BS-12+50% CTMAB)50BS+100CT(50%BS-12+100%CTMAB)100BS+150CT(100%BS-12+150%CTMAB)50BS+50CT(50%BS-12+50%CTMAB)100BS+25CT(100%BS-12+25%CTMAB)50BS+150CT(50%BS-12+150%CTMAB)50BS+25CT(50%BS-12+25%CTMAB)100BS(100%BS-12)50BS(50%BS-12)CK(unmodified soil). This revealed that the adsorption of phenol on modified bentonites increased with increasing CTMAB ratios at 0~100% of CEC, while decreased slightly at CTMAB ratios greater than 100% of CEC. The phenol adsorption was reduced by elevated temperature and pH, but increased with ionic strength at low concentration ranges. Henry equation could best describe the phenol isotherms. The adsorption of phenol on amphoteric-cationic modified bentonites is a spontaneous physical adsorption process characteristized by both enthalpy decreases and entropy increases." @default.
- W2372632789 created "2016-06-24" @default.
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- W2372632789 date "2014-01-01" @default.
- W2372632789 modified "2023-09-27" @default.
- W2372632789 title "Adsorption of Phenol on Amphoteric-Cationic Modified Bentonites" @default.
- W2372632789 hasPublicationYear "2014" @default.
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