吸附
聚吡咯
响应面法
朗缪尔吸附模型
背景(考古学)
聚合
化学工程
材料科学
复合数
纳米复合材料
比表面积
化学
核化学
复合材料
色谱法
有机化学
催化作用
聚合物
古生物学
工程类
生物
作者
Driss Mazkad,Ayoub El Idrissi,Salah Eddine Marrane,Nour-eddine Lazar,Mohamed El Ouardi,Othmane Dardari,Badr-Eddine Channab,Omar Ait Layachi,Salaheddine Farsad,Amal BaQais,El Mostapha Lotfi,Hassan Ait Ahsaine
标识
DOI:10.1016/j.colsurfa.2024.133172
摘要
The release of liquid effluents containing heavy metals, notably Cr (VI), into the environment is a significant contributor to water pollution. Consequently, there is a growing concern about treating these effluents before their discharge. In this context, our study introduces an innovative approach to produce a novel chloride-doped polypyrrole/Diatomite (Cl-PPy/DT) nanocomposite through in situ polymerization. We examined the physicochemical properties of Cl-PPy/DT using various analytical techniques, including structural, textural, morphological, and thermal analyses, confirming the successful formation of the composite. For Cr (VI) removal via batch adsorption, the efficiency of Cl-PPy/DT surpassed that of Cl-PPy and diatomite by 2.21 and 3.75 times, respectively, at a Cr(VI) concentration of 25 ppm. This suggests a robust synergistic effect between diatomite and Cl-PPy, where both components resist aggregation, resulting in a loose structure and optimal exposure of active sites. Using response surface methodology, we refined adsorption parameters such as contact time, initial metal concentration, and adsorbent quantity. Results indicated that adsorption followed a quadratic polynomial model with high regression parameters (R2 value = 99.6%). Kinetic findings demonstrated that Cr(VI) adsorption on Cl-PPy/DT aligned with the pseudo-second-order model. Moreover, at 25 °C, the Langmuir model effectively correlated with equilibrium data, revealing a maximum adsorption capacity (qmax) of 89.97 mg/g for the Cl-PPy/DT adsorbent. Notably, the adsorbent exhibited renewability and reusability for up to four cycles, indicating its potential for large-scale use as a competitive adsorbent.
科研通智能强力驱动
Strongly Powered by AbleSci AI