双层元素硫化脱反应堆,以控制硫酸盐生成和硫化物排放,通过双点输入和内部循环再循环
Yunpeng Shen1, Guanghua Zhao2, Dongjin Wan2
1College of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China.
Bioresource technology
|December 11, 2024
概括
元素硫自和混合脱反应堆有效地去除了酸盐. 具有两入口和内部循环的双层反应堆将硫酸盐和硫化物等副产品降到最低.
科学领域:
- 环境微生物学环境微生物学
- 水处理技术水处理技术.
- 生物地质化学循环是什么
背景情况:
- 酸盐污染对水生生态系统和人类健康构成风险.
- 生物脱是一种可持续的水处理方法.
- 优化反应堆设计和运行对于有效的酸盐去除至关重要.
研究的目的:
- 评估双层设计的元素硫自和混合脱反应堆的性能.
- 研究双入口和内部循环对酸盐去除效率和副产品产生的影响.
- 为了确定关键的微生物群落和功能基因参与了脱过程.
主要方法:
- 构建和运行元素硫自无反应堆 (SADR) 和具有双层配置的木块和S0混合无无反应堆 (WSMDR).
- 实施双入口和内部循环系统.
- 对脱率,硫酸盐生产和硫化物排放的分析.
- 使用16S rRNA基因测序和与功能基因相关的微生物社区分析.
主要成果:
- 无论是SADR还是WSMDR,都表现出有效的酸盐去除率,分别为66-114和70-104g-N/m3·d.
- 硫酸盐产量低于理论值 (5.5-5.9和3.2-4.5毫克SO42−/毫克减少N对于SADR和WSMDR).
- 没有检测到硫化物排放,包括Chlorobium,Chlorobaculum和Chlorobiaceae在内的微生物群落发挥了关键作用.
结论:
- 双层反应堆设计有两个入口和内部循环是有效的酸盐去除.
- 这种配置最大限度地减少了不必要的副产品的产生,提高了基于硫的脱的实际适用性.
- 微生物社区结构和功能基因丰富性对于高效的脱性能至关重要.
更多相关视频
08:34A Dual-Functional Electroactive Filter Towards Simultaneously SbIII Oxidation and Sequestration
Published on: December 5, 2019
5.5K
08:05Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O
Published on: October 7, 2020
6.1K
相关概念视频
Sulfur Assimilation
Sulfur is an essential element in biological systems, contributing to synthesizing key biomolecules, including amino acids such as cysteine and methionine, and cofactors such as coenzyme A and biotin. Microorganisms primarily assimilate sulfur as sulfate (SO₄²⁻) from the environment, which must undergo a series of biochemical transformations before it can be incorporated into cellular components. As sulfate is highly oxidized, it must undergo assimilatory sulfate reduction to...
Preparation and Reactions of Sulfides
4.7K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
4.7K
Anoxygenic Photosynthesis
Anoxygenic photosynthesis is a phototrophic process that captures light energy to drive carbon fixation without producing molecular oxygen. Unlike oxygenic photosynthesis, which utilizes water as an electron donor and releases oxygen, anoxygenic phototrophs use alternative electron donors such as hydrogen sulfide (H₂S), elemental sulfur (S⁰), or thiosulfate (S₂O₃²⁻). This process is carried out by diverse groups of bacteria, including purple bacteria, green...
The Sulfur Cycle
43.7K
Sulfur, an important element in the chemical makeup of proteins, is recycled through the atmosphere and aquatic and terrestrial environments. Found in the atmosphere as sulfur dioxide (SO2), sulfur is released by decaying organisms, weathered rocks, geothermal vents, volcanos, and burning fossil fuels. It is deposited into the ecosystem, cycled through the biotic community, and either released back into the atmosphere as gas or deposited in marine sediment for long-term storage and eventual...
43.7K
Precipitation and Co-precipitation
1.7K
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...
1.7K
