相关实验视频

Updated: Jul 1, 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

纯净和Fe功能化的生物炭用于在受污染的矿山土壤中同时固定和

Jiayi Li¹, Yurong Gao², Caibin Li³

¹Agronomy College, Shenyang Agricultural University, Shenyang 110866, China; School of Environmental and Chemical Engineering, Foshan University, Foshan 528000, China.

Journal of hazardous materials

|March 9, 2024

概括

铁功能化生物炭 (FBC) 在受污染的土壤中有效地固定 (As) 和 (Sb),促进土壤酶活性和有益的细菌群落. 纯净生物炭 (BC) 显示了中度的As/Sb减少.

科学领域:

环境科学环境科学
土壤科学土壤科学
生物地质化学生物地质化学

背景情况:

(As) 和 (Sb) 是有毒的金属化物,经常共同污染土壤.
生物炭 (BC) 是一个有前途的土壤修改剂,用于污染物修复.
铁功能化生物炭 (FBC) 可能通过额外的机制增强固定.

研究的目的:

评估原始生物炭 (BC) 和Fe功能化生物炭 (FBC) 在修复As-Sb共同污染的土壤中的有效性.
调查BC和FBC对土壤酶活动和细菌群落的影响.
阐明由FBC进行As/Sb固定的机制.

主要方法:

使用As-Sb共同污染的土壤进行化实验,该土壤经过不同度的BC和FBC处理.
使用顺序提取对生物可用As和Sb度的分析.
测量土壤酶活动 (N-乙-β-葡萄糖胺酶,尿素酶).
使用高通量测序评估细菌群体组成.
同时发生的网络分析和部分最小方程路径建模.

主要成果:

与对照组相比,1.5%的FBC显著降低了生物可用性As (13.5%) 和Sb (27.1%).
通过Fe诱导的静电吸引,协调和复杂化,FBC增强了As/Sb的固定.
1.5%的FBC显著增加了N-乙-β-葡萄糖胺酶 (108.2%) 和尿酶 (367.4%) 的活性.
FBC的应用促进了蛋白质细菌,Actinobacteriota,Chloroflexi和Gemmatimonadota的丰富性.
与BC相比,FBC更有效地改善了细菌社区的复杂性.

结论:

在受污染的土壤中,Fe功能化生物炭 (FBC) 优于原始生物炭 (BC) 在污染土壤中的同时As和Sb固定中.
FBC的应用对土壤酶活动产生积极影响,并重组细菌群落,促进土壤健康.
这些发现支持FBC作为修复金属化物共污染土壤的可行修正案.

关键词:

同时发生的网络分析网络分析金属的共同污染微生物社区的微生物社区.修改后的生物碳土壤整治土壤整治土壤整治

更多相关视频

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Published on: November 28, 2014

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...

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.