聚基酸盐和零价铁的合,以加强酸盐污染的处理,在透反应屏障及其下降度含水层内

相关实验视频

Updated: Jul 6, 2025

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide

Published on: June 28, 2019

Wenhao Yu¹, Tianyuan Zheng¹, Bo Guo²

¹Key Lab of Marine Environmental Science and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, PR China; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao 266100, China.

|January 5, 2024

概括

使用铁碳水凝的透反应屏障有效地去除地下水中酸盐. 下降水层在这个过程中发挥着重要作用,由聚基酸盐的溶解有机碳增强.

科学领域:

环境科学环境科学
地质化学地质化学
微生物学微生物学

背景情况:

地下水中的酸盐污染对环境和健康构成重大风险.
透反应屏障 (PRB) 是用于现场地下水整治的工程系统.
PRB通常使用碳和铁基材料来促进脱.

研究的目的:

为了评估铁碳水凝 (ICH) 作为PRB填充剂用于酸盐补救的有效性.
调查PRB和下降度水层中的酸盐去除.
为了确定聚基酸盐 (PHB) 与微量零价值铁 (mZVI) 的比例对脱的影响.

主要方法:

实验室列测试使用ICH进行,具有不同的PHB:mZVI重量比.
地下水中酸盐度在PRB内和下坡水层中得到监测.
进行了微生物社区分析,以确定占主导地位的细菌种群.

主要成果:

下降水层对酸盐的总去除有显著的贡献 (19.5%32.5%).
在ICH中PHB:mZVI比率较高,增加了下坡水层对酸盐去除的贡献.
微生物分析显示,在PRB中,异质型/异质型细菌下降和自型/减铁细菌占主导地位,其丰富程度与PHB:mZVI比率相关.

结论:

下降水层在PRB中介的酸盐去除中起着至关重要的作用,特别是当从PHB中提供溶解的有机碳时.
ICH PRB 证明了有效的酸盐整治,其性能受PHB:mZVI比率的影响.
这些发现支持开发成本有效的PRB,用于营养废物管理和预防二次污染.

关键词:

水層水層是指水層中的水層.脱化过程中的脱.地下水的地下水.在现场补救补救.透的反应屏障是可以透过的.

更多相关视频

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent

Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent

Published on: February 21, 2017

A Dual-Functional Electroactive Filter Towards Simultaneously SbIII Oxidation and Sequestration

A Dual-Functional Electroactive Filter Towards Simultaneously SbIII Oxidation and Sequestration

Published on: December 5, 2019

相关概念视频

Precipitation and Co-precipitation

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...

Coagulation

Coagulation

Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...

Bioremediation

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.

Corrosion

Corrosion

The degradation of metals due to natural electrochemical processes is known as corrosion. Rust formation on iron, tarnishing of silver, and the blue-green patina that develops on copper are examples of corrosion. Corrosion involves the oxidation of metals. Sometimes it is protective, such as the oxidation of copper or aluminum, wherein a protective layer of metal oxide or its derivatives forms on the surface, protecting the underlying metal from further oxidation. In other cases, corrosion is...