Removal Effect of Atrazine in Co-Solution with Bisphenol A or Humic Acid by Different Activated Carbons

Materials

Xinhui Wei¹  Yongtao Xue¹  Xiufang He¹  Zhansheng Wu²  Xia Yang² 

[1] School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China;School of Environmental and Chemical Engineering, Xi’an Polytechnic University, Xi’an 710048, China;

关键词: activated carbon;    adsorption;    atrazine;    co-solution;    bisphenol A;    humic acids;    NaCl;   

DOI  :  10.3390/ma11122558

来源: DOAJ

【 摘 要 】

Activated carbons (ACs) based on apricot shells (AS), wood (W), and walnut shells (WS) were applied to adsorb atrazine in co-solutions. To study the effect of Bisphenol A (BPA) on the adsorption behavior of atrazine, the adsorption performance of ACs for BPA in single solution was studied. The results demonstrated that the adsorption kinetics of BPA fitted the pseudo-second-order model, the adsorption isotherms of BPA followed the Langmuir model. Meanwhile, the adsorption kinetics of atrazine fitted the pseudo-second-order kinetics model and the isotherm was consistent with the Freundlich model both in single solution and co-solution. In addition, competitive adsorption was observed when atrazine coexisted with BPA or humic acid. For the adsorption capacity, the adsorption amount of ASAC, WAC, and WSAC for atrazine obviously decreased by 18.0%, 30.0%, and 30.3% in the presence of BPA, respectively, which was due to the π−π interactions, hydrophobic interactions, and H-bonds, resulting in the competitive adsorption between atrazine and BPA. This study contributes to the further understanding of the adsorption behavior for atrazine in co-solution.

【 授权许可】

Unknown