Mechanism of remediation of U(VI) contaminated simulated soil by AC‐nHAP gel microsphere as PRB combined electrokinetic technology

IF 1.5 3区 化学 Q3 CHEMISTRY, ANALYTICAL
Shukui Zhou, Yuewu Yang, Hui Tang, Yi Duan, Huashan Yuan, Jiaqing Yan, Xiuming Yu, Yihao Li
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引用次数: 0

Abstract

This study investigates the efficacy of activated carbon-nano-hydroxyapatite (AC-nHAP) gel microspheres, composed of sodium alginate and AC-nHAP, as permeable reactive barrier (PRB) fillers for electrokinetic remediation of uranium-contaminated soil. The optimum configuration with 3 g each of AC and nHAP achieved a uranium removal efficiency of 82.31%, surpassing pure electrokinetic remediation by 18.15%. The porous structure of the microspheres facilitated uranium immobilization via complexation, precipitation, and adsorption mechanisms, effectively reducing the leaching toxicity to 0.068 mg/L. These findings underscore the potential of AC-nHAP gel microspheres as PRB fillers in enhancing the efficacy of EK remediation for heavy metal-contaminanted soil.

AC - nHAP凝胶微球作为PRB联合电动技术修复U(VI)污染模拟土壤的机理
研究了由海藻酸钠和AC-nHAP组成的活性炭-纳米羟基磷灰石(AC-nHAP)凝胶微球作为可渗透反应屏障(PRB)填料对铀污染土壤的电动修复效果。最优配置下,AC和nHAP各3 g,铀去除率为82.31%,比纯电动修复高出18.15%。微球的多孔结构通过络合、沉淀和吸附等机制促进铀的固定化,有效地将浸出毒性降至0.068 mg/L。这些发现强调了AC-nHAP凝胶微球作为PRB填料在提高EK对重金属污染土壤修复效果方面的潜力。
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来源期刊
CiteScore
2.80
自引率
18.80%
发文量
504
审稿时长
2.2 months
期刊介绍: An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.
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