@ARTICLE{Hu_Xiangyang_Simultaneous_2022,
 author={Hu, Xiangyang and Wang, Bao and Yan, Gengsheng and Ge, Bizhou},
 volume={48},
 number={3},
 pages={37-47},
 journal={Archives of Environmental Protection},
 howpublished={online},
 year={2022},
 publisher={Polish Academy of Sciences},
 abstract={An organobentonite modified with an amphoteric surfactant, tallow dihydroxyethyl betaine (TDHEB), was used as an adsorbent to simultaneously remove Cu(II) and phenol from wastewater. The characteristic of the organobentonite (named TDHEB-bentonite) was analyzed by X-ray diffraction, Fourier-transform infrared spectra and nitrogen adsorption-desorption isotherm. Batch tests were conducted to evaluate the adsorption capacities of TDHEB-bentonite for the two contaminants. Experiment results demonstrated that the adsorption of both contaminants is highly pH-dependent under acidic conditions. TDHEB-bentonite had about 2.0 and 5.0 times higher adsorption capacity toward Cu(II) and phenol, respectively, relative to the corresponding raw Na-bentonite. Adsorption isotherm data showed that the adsorption processes of both contaminants were well described by Freundlich model. Kinetic experiment demonstrated that both contaminants adsorption processes correlated well with pseudo-second-order model. Cu(II) had a negative impact on phenol adsorption, but not vice versa. Cu(II) was removed mainly through chelating with the organic groups (-CH2CH2OH and -COO-) of TDHEB. Otherwise, partition into the organic phase derived from the adsorbed surfactant was the primarily mechanism for phenol removal. Overall, TDHEB-bentonite was a promising adsorbent for removing Cu(II) and phenol simultaneously from wastewater.},
 type={Article},
 title={Simultaneous removal of phenol and Cu(II) from wastewater by tallow dihydroxyethyl betaine modified bentonite},
 URL={http://www.czasopisma.pan.pl/Content/124074/PDF/Archives%20vol%2048_3pp37_47.pdf},
 doi={10.24425/aep.2022.142688},
 keywords={simultaneous adsorption;, bentonite;, tallow dihydroxyethyl betaine;, Cu(II);, phenol;},
}