通过生物矿物化从水中去除和
Manjot Kaur1, Navneet Sidhu1, M Sudhakara Reddy2
1Department of Biotechnology, Thapar Institute of Engineering & Technology, Patiala, Punjab, 147004, India.
Environmental monitoring and assessment
|August 7, 2023
概括
这项研究表明,尿溶性细菌Bacillus paramycoides-MSR1有效地从污染水中去除和. 微生物诱导的碳酸沉 (MICCP) 是一项有前途的技术,用于清除水污染.
科学领域:
- 环境微生物学 环境微生物学
- 生物修复技术 生物修复技术
- 水质管理水质管理
背景情况:
- 像 (Cd) 和 (As) 这样的重金属是源自人类活动的有毒环境污染物.
- 污染水对人类健康和生态系统构成重大风险.
- 生物修复为减轻重金属污染提供了一种可持续的方法.
研究的目的:
- 研究尿溶性细菌,特别是Bacillus paramycoides-MSR1的有效性,用于从污染水中生物修复和.
- 评估和对B. paramycoides-MSR1.1.的尿酶活性和碳酸沉的影响.
- 通过微生物诱导的碳酸沉 (MICCP) 来确定这些重金属的去除效率.
主要方法:
- 确定和的最小抑制度 (MIC) 对于B. paramycoides-MSR1.
- 评估不同金属度的人造废水中的尿酶活性和碳酸沉.
- 在化后使用原子吸收光谱 (AAS) 量化金属去除.
- 分析微观结构以确认降水机制.
主要成果:
- 巴西勒斯帕拉米科伊德-MSR1对 (MIC 12.84 μM) 和 (MIC 48.54 μM) 呈现出高耐药性.
- 随着金属度的增加,尿酸活性下降,但碳酸沉量显著 (189 mg/100 ml用于Cd,183 mg/100 ml用于MIC中的As).
- 在168小时的化后, (93.13%) 和 (94.25%) 的去除率超过93%.
结论:
- 巴西勒斯帕拉米科伊德-MSR1有效地从受污染的水中去除和.
- 微生物诱导的碳酸沉 (MICCP) 是这种细菌去除重金属的可行机制.
- MICCP提出了一个有前途的生物修复策略,用于净化污染和的水源.
相关概念视频
Bioremediation
19.0K
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.
19.0K
Precipitation and Co-precipitation
1.9K
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...
1.9K
Coagulation
329
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...
329
Factors Affecting Solubility
33.5K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
33.5K
Extraction: Advanced Methods
485
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
485
Enhanced Elimination of Poison
540
Poison can be effectively removed from the gastrointestinal (GI) tract through various decontamination procedures.
Antidotes serve a crucial role in counteracting the effects of poison by inhibiting enzymes responsible for producing harmful drug metabolites. In some cases, these toxic metabolites can be neutralized by endogenous cosubstrates, which are maintained at specific concentrations to prevent interaction with cellular macromolecules and subsequent cell death.
Renal excretion is the...
Antidotes serve a crucial role in counteracting the effects of poison by inhibiting enzymes responsible for producing harmful drug metabolites. In some cases, these toxic metabolites can be neutralized by endogenous cosubstrates, which are maintained at specific concentrations to prevent interaction with cellular macromolecules and subsequent cell death.
Renal excretion is the...
540


