Advances in the removal of emerging contaminants from water mediated by chemically modified biochar
Journal Title: Energy Environmental Protection - Year 2023, Vol 37, Issue 5
Abstract
Emerging contaminants are pollutants with relatively low concentration but high toxicity. They can be enriched in living organisms and transferred to the human body through the food chain, posing a significant threat to environmental ecology and human health. Additionally, the harm caused by emerging contaminants in the environment is latent, hidden and persistent. Therefore, it is of great practical significance to choose appropriate methods to control the risk of emerging contaminants. In the context of "double carbon action" , biochar adsorption for emerging contaminants removal has aroused extensive research interest. However, it should be noted that the original biochar has limitations in many applications, such as weak adsorption capacity, poor selectivity, and low chemical stability. Therefore, it is necessary to modify biochar to improve its application in water treatment. Currently, chemical modification of biochar is the most widely used method of modification. This paper introduces three commonly used chemical modification methods of biochar: acid modification, alkali modification and metal salt/oxide modification. The mechanisms by which these methods enhance the physical and chemical properties of biochar are also discussed. Furthermore, the synergistic mechanism of chemically modified biochar mediated removal of emerging contaminants is analyzed, primarily involving adsorption and advanced oxidation processes. The research progress of chemically modified biochar in the removal of typical emerging contaminants such as PPCPs, EDCs, PFCs and MPs in the past five years is summarized. Finally, this paper proposes future research directions for the chemically modified biochar mediated removal of emerging contaminants to provide a reference for the green and efficient removal of emerging contaminants from water.
Authors and Affiliations
LI Xiting|College of Environmental Science and Engineering, Hunan University, China, Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, China, DONG Haoran*|College of Environmental Science and Engineering, Hunan University, China, Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, China
Keywords
Related Articles
- EP ID EP737998
- DOI 10.20078/j.eep.20230806
- Views 6
- Downloads 0
Surface reconfiguration of pine-based porous carbon enhanced persulfate for removing bisphenol A
Bisphenol A(BPA), one kind of the most widely-used industrial compounds, is persistent in the environment and poses threat to human health and other microorganisms. Consequently, it is of great significance in developing...
Measurement techniques new progress of atmospheric fine particles
Atmospheric fine particle pollution has an important impact on regional environment, global climate and human health, so it has been one of the key and difficult points of air pollution prevention and control. In recent...
A review on development status and prospects of biomass gasification integration with solid oxide fuel cells
China is currently the world′s largest energy consumer, and its energy structure is characterized by being rich in coal, deficient in oil, and having a limited supply of natural gas. The heavy reliance on coal, as a foss...
Research progress in low carbon smelting technology of blast furnace gas cycle coupling carbon capture
The iron and steel industry ranks first in terms of carbon emissions in the industrial sector. The blast furnace process has the highest carbon emissions, which is the carbon emission reduction bottleneck of the steel in...
Numerical simulation analysis of activated carbon injection adsorption in flue gas purification application
Sludge blending has become one of the means to transform the energy structure of coal-fired power plants. Based on the existing coal-fired flue gas system of Zhejiang Jinhua Ningneng Thermal Power Plant, this paper propo...