锶
膜
吸附
材料科学
化学工程
纳米复合材料
陶瓷
核化学
化学
冶金
复合材料
有机化学
生物化学
工程类
作者
Dema A. Almasri,Ahmad Kayvani Fard,Gordon McKay,Віктор Кочкодан,Muataz Ali Atieh
标识
DOI:10.1016/j.jwpe.2020.101538
摘要
In this paper activated carbon (AC) was doped with iron oxide (Fe2O3) nanoparticles and characterized and tested for its adsorptive efficiency towards strontium by varying the contact time, pH and strontium concentration in the feed solutions. The modified adsorbent (AC-Fe) proved to be far more effective than raw AC for strontium adsorption. Based on these results, novel hybrid ceramic membranes were prepared by incorporating AC and AC-Fe nanocomposites into an alumina (Al2O3) matrix via mixing-casting-sintering method. The pristine Al2O3, Al2O3/AC, and hybrid Al2O3/AC/Fe membranes were characterized and tested for strontium rejection. The incorporation of AC-Fe nanocomposites into the Al2O3 membrane matrix notably affected the average pore size, hydrophilicity and adsorption capabilities of the prepared membranes. The Al2O3/AC/Fe membrane was shown to be far superior relative to the pristine Al2O3 membrane and the Al2O3/AC membrane in terms of flux and strontium removal efficiencies at various pH values and strontium concentrations in the feed. Approximately 90 % of strontium was removed at a pH 7 and at a feed concentration of 2 mg/L. The Al2O3/AC/Fe membrane, when tested with real treated sewage effluent, exhibited more than 80 % removal of strontium from wastewater.
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