用锰矿去除沿海水产养殖源水中的 Fe2+:批量实验和突破曲线建模。

IF 2.5 4区 环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL Water Environment Research Pub Date : 2024-11-01 DOI:10.1002/wer.11147
Jianhua Wang, Wenchao Feng, Jian Lu, Jun Wu, Wenxin Cao, Jianbai Zhang, Cui Zhang, Bing Hu, Wensheng Li
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引用次数: 0

摘要

沿海养殖源水中过量的 Fe2+ 会严重影响水产养殖的发展。本研究利用锰砂,通过柱实验研究了近海养殖源水中Fe2+的去除潜力和机理。伪一阶动力学模型能较好地描述 Fe2+ 的去除过程,R2 在 0.9451-0.9911 之间。在 120 分钟内,99.7%以上的 Fe2+ 可被去除,而去除率(k)受低初始 Fe2+ 浓度、高温和低 pH 值的正向影响。Logistic 生长(S 型生长)模型能更好地拟合色谱柱出水中 Fe2+ 的浓度变化(R2>0.99)。Bohart-Adams、Yoon-Nelson 和 Thomas 模型可以拟合 Fe2 突破曲线(R2>0.95)。反应后锰砂表面出现了形状不规则的光滑切片,而柱实验后锰砂表面的铁含量显著增加。此外,反应后锰砂表面主要形成了 FeO(OH)。实践点:锰矿可去除沿海养殖源水中的 Fe2+。伪一阶动力学模型较好地描述了 Fe2+ 的去除过程。反应后锰砂表面主要形成 FeO(OH)。
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Removal of Fe2+ in coastal aquaculture source water by manganese ores: Batch experiments and breakthrough curve modeling.

Excessive Fe2+ in coastal aquaculture source water will seriously affect the aquaculture development. This study used manganese sand to investigate the removal potential and mechanism of Fe2+ in coastal aquaculture source water by column experiments. The pseudo-first-order kinetic model could better describe Fe2+ removal process with R2 in the range of 0.9451-0.9911. More than 99.7% of Fe2+ could be removed within 120 min while the removal rate (k) was positively affected by low initial concentration of Fe2+, high temperature, and low pH. Logistic growth (S-shaped growth) model could better fit the concentration variation of Fe2+ in the effluent of the column (R2>0.99). The Fe2 breakthrough curve could be fitted by Bohart-Adams, Yoon-Nelson, and Thomas models (R2>0.95). Smooth slices with irregular shapes existed on the surface of manganese sand after the reaction while Fe content increased significantly on the surface of manganese sand after the column experiment. Moreover, FeO (OH) was mainly formed on the surface of manganese sand after the reaction. PRACTITIONER POINTS: Fe2+ in coastal aquaculture source water could be removed by manganese ores. The pseudo-first-order kinetic model better described the Fe2+ removal process. FeO (OH) was mainly formed on the surface of manganese sand after the reaction.

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来源期刊
Water Environment Research
Water Environment Research 环境科学-工程:环境
CiteScore
6.30
自引率
0.00%
发文量
138
审稿时长
11 months
期刊介绍: Published since 1928, Water Environment Research (WER) is an international multidisciplinary water resource management journal for the dissemination of fundamental and applied research in all scientific and technical areas related to water quality and resource recovery. WER''s goal is to foster communication and interdisciplinary research between water sciences and related fields such as environmental toxicology, agriculture, public and occupational health, microbiology, and ecology. In addition to original research articles, short communications, case studies, reviews, and perspectives are encouraged.
期刊最新文献
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