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Development of calcium-modified biochar for enhanced phytoremediation of human-induced salt pollutants (HISPs).
- Source :
-
Chemosphere . May2024, Vol. 355, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- Soil salinization is a major environmental hazard that limits land availability. Human-induced salt pollutants (HISPs) are regularly presented in large quantities on the contaminated site (such as brine leakages and salt-water spills), causing a devastating shock with high salt stress to the ecosystem. For instance, Saskatchewan resulted in a 48% drop in wheat production and a 0.3% decline in provincial GDP. As the calcium-modified biochar can potentially ameliorate the negative effects of HISPs on plants and improve the plant, phytoremediation with calcium-modified biochar can have increased detoxification of hazardous pollutants from sites. Therefore, the objective of our study was to develop a biochar-assisted phytoremediation employing diverse approaches to calcium modification for the sustainable removal of HISPs. The co-pyrolyzed calcium biochar achieved a remarkable removal rate of 18.06%, reducing salinity from 9.44 to 7.81 dS/m. During a 90-day long-term phytoremediation, the overall reduction rate of calcium-modified biochar stimulated the germination and growth of Thinopyrum ponticum. The result of post-treatment further indicated that co-pyrolyzed biochar with Ca transferred salt into the plant compared to Ca-coated biochar, which only immobilized HISPs on its surface. These results offer two different treatment approaches for diverse situations involving HISPs contamination, addressing current in-situ spills and providing a calcium-related biochar technology for further research in desalination. [Display omitted] • Ca-coated and Ca-copyrolyzed biochar for phytoremediation of saline soil were investigated. • Ca-modified biochars generated from copyrolysis and coating. • Ca-modified biochars displayed enhanced capability in direct removing salt from brine water • In a 90-day phytoremediation, Ca-modified biochar reduced salinity and improved soil quality • Ca-copyrolyzed and Ca-coated biochar have diverse roles in salt migration into vegetations [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00456535
- Volume :
- 355
- Database :
- Academic Search Index
- Journal :
- Chemosphere
- Publication Type :
- Academic Journal
- Accession number :
- 176588766
- Full Text :
- https://doi.org/10.1016/j.chemosphere.2024.141860