相关实验视频

Updated: Jun 9, 2025

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

探索来自大米皮和甜菜纸的生物炭中重金属的特征和可能的生态风险

Farzad Moradi-Choghamarani¹, Farshid Ghorbani²

¹Department of Environmental Sciences, Faculty of Natural Resources, University of Kurdistan, P.O. Box: 416, Sanandaj, Iran.

Environmental monitoring and assessment

|October 29, 2024

概括

来自大米和甜菜纸的生物炭可以增加重金属,除了. 热解降低了金属的可用性,但可能无法消除风险,尤其是.

科学领域:

环境科学环境科学
土壤科学土壤科学
生物质的价值化生物质的价值化

背景情况:

从农业废物,如大米 (RH) 和甜菜纸 (SBP) 中生产生物炭是废物管理的一种方法.
这些原料可能富含重金属 (HM),造成潜在的环境风险.
了解热解过程中的HM行为对于安全的生物炭应用至关重要.

研究的目的:

调查有关重金属的RH和SBP生物炭的特性和环境危害.
评估原料类型和热解温度对HM分数和植物可用性的影响.
评估与这些生物炭相关的生态毒性和潜在的生态风险.

主要方法:

在原始生物质 (RH,SBP) 和衍生生物炭中分析重金属度和分量.
改变热解温度以研究它们对HM转化和植物可用性的影响.
计算潜在的生态风险指数 (PERI),以评估环境危害.

主要成果:

600°C的热解使生物炭中的HM总度因降水而增加了10-14%,除了 (通过挥发减少3-7%).
HM 分数从F1+F2转移到F3+F4,表明生态毒性降低,但Cr和Cd F1/F2 分数仍然存在.
升高的热解温度通常会降低HM的植物可用性 (10-92%),但Cr和Cd的植物可用性意外地增加,提高PERI值.
所有样本都显示出非常高的PERI (>800),主要是由于的毒性. 除了外,PERI值很低 (7-13).除了外,PERI值很低 (7-13).

结论:

丰富HM生物质的热解可以改变HM物种化和降低植物可用性,但它可能无法消除环境风险,特别是.
HM分量的转化和植物可用性的变化取决于原料和热解温度.
由驱动的高PERI值突出了污染生物质衍生生物炭安全应用的局限性.

关键词:

农业废物农业废物生物炭是一种生物炭.重金属是一种重金属.热解是一种热解过程.有关门的限制.

更多相关视频

A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging

A Method to Preserve Wetland Roots and Rhizospheres for Elemental Imaging

Published on: February 15, 2021

Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae

Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae

Published on: July 10, 2015

相关概念视频

Types of Toxins

Types of Toxins

Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...

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.