Publications by authors named "Lezhu Su"
Article Synopsis
- The study showed that Fe-NC cathodes from metal-organic frameworks significantly boosted methane production in a system treating waste activated sludge.
- Fe-NC exhibited excellent properties with a large surface area and enhanced electrochemical performance compared to traditional carbon felt materials.
- The findings suggest that Fe-NC improves the microbial processes involved in methane generation, presenting a promising approach for advancing waste-to-energy techniques in wastewater treatment.
Advanced oxidation processes (AOPs), based on sulfate radical (SO) produced by peroxymonosulfate (PMS), can effectively mineralize refractory organic pollutants. However, the coexistence of anions and natural organic matters in actual wastewater prevents the application of AOPs. A simple one-step method was used to prepare FeS/FeO co-modified biochar materials (FFB) that could activate PMS to degrade quinclorac (QNC) with a removal rate of 100%, even exhibiting optimum degradation of QNC reached 99.
View Article and Find Full Text PDFNeither chemical nor physical adsorption play well in heavy metals remediation in acid soil due to the competing behavior of abundant protons, where stable chelators that can be reused are of significant demand. Herein, biochar with abundant nitro and carboxyl groups is prepared, which can be assembled into self-supporting electrode. Under the catalyzation of electricity, the surface decorated -NO on the biochar can be in situ transformed into -NH.
View Article and Find Full Text PDFOxygen-limited pyrolysis and incineration impact on biochar transport.
Environ Sci Pollut Res Int
October 2023
At present, studies on biochar transport have focused on biochar obtained by oxygen-limited pyrolysis, which may differ from conventional biochar produced by incineration in nature. This work investigated the transport and retention mechanisms of three types of oxygen-limited pyrolytic biochar and three types of traditional biochar in saturated porous media. The results showed that the specific surface area of the three oxygen-limited pyrolysis biochar (180-200 m·g) was higher than that of the traditional biochar (50-60 m·g).
View Article and Find Full Text PDFArticle Synopsis
- - The text discusses the limitations of current photocatalytic materials for controlling food pathogens, which often rely on metals that lack stability and may cause secondary pollution, prompting interest in non-metallic alternatives.
- - A new non-metallic composite called B@RP, made from rice shell biochar and red phosphorus, was created to effectively eliminate bacteria like E. coli through photocatalysis and photothermal effects.
- - B@RP demonstrated impressive performance by completely removing E. coli within 2 hours of exposure to light, maintaining 100% sterilization efficiency after 9 cycles, making it a promising, safe option for the food industry.