Publications by authors named "Xingtian Shang"
Article Synopsis
- - A study was conducted to see how different types of biochar (specifically maize and wheat straw) influence the removal of polycyclic aromatic hydrocarbons (PAHs) in contaminated soil when ryegrass is planted for 90 days.
- - Results indicated that wheat straw biochar pyrolyzed at 500°C was particularly effective, achieving a 62.5% reduction in PAH levels, and improved microbial activity and diversity were observed, which helped in the degradation of these harmful compounds.
- - The research also highlighted that the presence of specific bacteria, influenced by biochar, plays a crucial role in PAH degradation, and suggests that using appropriate biochar can enhance both phytoremediation efforts and overall soil health
Article Synopsis
- A 150-day pot experiment evaluated the effectiveness of rice husk and biochar in cleaning soils contaminated with polycyclic aromatic hydrocarbons (PAHs) and heavy metals (HMs), using alfalfa as a plant.
- Rice husk biochar proved to be more effective than rice husk in removing PAHs and immobilizing heavy metals, positively influencing specific bacteria responsible for degrading PAHs.
- The study suggests that combining rice husk biochar with alfalfa could serve as a promising strategy for remediating soils contaminated by both PAHs and heavy metals.
Biochar and ryegrass have been used in the remediation of polycyclic aromatic hydrocarbons (PAHs)-contaminated soils; however, the effects of different biochar application levels on the dissipation of PAHs, bacterial communities, and PAH-ring hydroxylating dioxygenase (PAH-RHDα) genes in rhizosphere soil remain unclear. In this study, enzyme activity tests, real-time quantitative polymerase chain reaction (PCR), and high-throughput sequencing were performed to investigate the effects of different proportions of rape straw biochar (1%, 2%, and 4% (w/w)) on the degradation of PAHs, as well as the associated changes in the soil bacterial community and PAH-RHDα gene expression. The results revealed that biochar enhanced the rhizoremediation of PAH-contaminated soil and that 2% biochar-treated rhizosphere soil was the most effective in removing PAHs.
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