期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 365, 期 -, 页码 519-530出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2018.11.037
关键词
Adsorption; Clay; Lead; Honeycomb monoliths; Water depollution
资金
- Ministry of Economy and Competitiveness of Spain (MINECO/FEDER) [MAT2013-40823-R, MAT2013-42934-R]
- Junta de Andalucia [FQM-110]
Different natural Moroccan clays were used as adsorbents for the removal of lead from aqueous solution. The study was performed not only employing the starting clays in the form of powder but also after their extrusion as honeycomb monoliths, this representing the major novelty of this work respect to the current state-of-art. The experiments were done in batch conditions with continuous stirring and using a recirculated flow, respectively. In addition to an exhaustive characterization of the clays by means of X-ray fluorescence, X-ray diffraction, thermogravimetric analysis, laser granulometry, N-2 physisorption, infrared spectroscopy, SEM-EDS and evaluation of the cation exchange capacity, special attention was paid to the influence on the lead adsorption of variables such as adsorbent dosage, pH, contact time with the adsorbate and initial concentration of lead. Considering the cheap and abundant character of the raw materials, their easy processing (no additives were required for their extrusion) and the time and energy save due to no need for further modification through chemical/thermal activation, the obtained results (with retention over 90% for 30 ppm of lead) demonstrated the potential of the proposed design as low cost solution that may be competitive versus other technologies for water depollution, especially in developing regions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据