Iron-loaded activated carbon cloth as CDI electrode material for selective recovery of phosphate.

IF 5.8 3区环境科学与生态学 0 ENVIRONMENTAL SCIENCES

Environmental Science and Pollution Research Pub Date : 2024-11-06 DOI:10.1007/s11356-024-35444-7

Tanzila Sharker, Jayaruwan G Gamaethiralalage, Qiyang Qu, Xinxin Xiao, Jouke E Dykstra, Louis C P M de Smet, Jens Muff

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Abstract

This study investigated the efficacy of oxidised iron-loaded activated carbon cloth (Fe-ACC) for selective recovery of phosphorous. The capacitive deionisation (CDI) technology was employed, for rapid removal of phosphate, with the aim of reducing the reliance on high alkalinity environment for the regeneration of Fe-ACC electrode. Multiple experimental parameters, including applied potential, pH, and co-existing ions, were studied. Additionally, the CDI system was tested on a real water matrix (Lake Ormstrup, Denmark) to elucidate the electrodes' performance on selective recovery of phosphate. About 69 ± 10% of the adsorbed phosphate were released at pH 12 via pure chemical desorption, which was ~ 50% higher than that at pH 9. The CDI system successfully demonstrated the selective removal of phosphate from the lake water. It reduced the concentration of phosphate from 1.69 to 0.49 mg/L with a 71% removal efficiency, while the removal percentages of other anions, namely chloride, sulphate, bromide, nitrite, nitrate, and fluoride, were 10%, 7%, 1%, 1.5%, 4%, and 7%, respectively.

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将铁负载活性碳布作为 CDI 电极材料，用于选择性回收磷酸盐。

本研究调查了氧化铁负载活性碳布（Fe-ACC）选择性回收磷的功效。为了快速去除磷酸盐，采用了电容去离子（CDI）技术，目的是减少 Fe-ACC 电极再生对高碱度环境的依赖。研究了多个实验参数，包括应用电位、pH 值和共存离子。此外，还在真实水基质（丹麦奥姆斯特鲁普湖）上测试了 CDI 系统，以阐明电极在选择性回收磷酸盐方面的性能。在 pH 值为 12 时，约 69 ± 10% 的吸附磷酸盐通过纯化学解吸释放出来，比 pH 值为 9 时高出约 50%。它将磷酸盐的浓度从 1.69 毫克/升降至 0.49 毫克/升，去除率为 71%，而对其他阴离子，即氯化物、硫酸盐、溴化物、亚硝酸盐、硝酸盐和氟化物的去除率分别为 10%、7%、1%、1.5%、4% 和 7%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Environmental Science and Pollution Research 环境科学-环境科学

CiteScore

8.70

自引率

17.20%

发文量

6549

审稿时长

3.8 months

期刊介绍： Environmental Science and Pollution Research (ESPR) serves the international community in all areas of Environmental Science and related subjects with emphasis on chemical compounds. This includes: - Terrestrial Biology and Ecology - Aquatic Biology and Ecology - Atmospheric Chemistry - Environmental Microbiology/Biobased Energy Sources - Phytoremediation and Ecosystem Restoration - Environmental Analyses and Monitoring - Assessment of Risks and Interactions of Pollutants in the Environment - Conservation Biology and Sustainable Agriculture - Impact of Chemicals/Pollutants on Human and Animal Health It reports from a broad interdisciplinary outlook.