soil remediation

To explore highly effective and nonmetallic advanced oxidation process system to alleviate the persistent herbicides contamination in agricultural soils is of great importance. In this study, a significantly graphitized biochar with abundant C = O structure is prepared as non-metallic catalyst (WCGBC800). Different from other traditional amorphous pristine biochar, WCGBC800 can accelerate the electron transfer […]

Dear Tee Cee, What exactly is “biochar”? I see it for sale and talked about as a good thing. How is it made, and what do people do with it? It seems to be some sort of wood-burning process, so I don’t understand how that can be good for the environment. — Laura Dear Laura, […]

Abstract Biochar nanoparticles (BCNPs) and iron mineral nanoparticles (IMNPs), such as ferrihydrite nanoparticles (FHNPs), magnetite nanoparticles (MTNPs), and goethite nanoparticles (GTNPs), are often combined and used in soil remediation. However, the stability and interaction of nanoparticles under various environmental conditions have not been investigated previously. In this study, settling experiments, a semi-empirical model, the Derjaguin–Landau–Verwey–Overbeek […]

Abstract To better understand the amendment effects and mechanisms of aluminum (Al(III)) phytotoxicity mitigation by different regional crop straw biochars, wheat seedling root elongation trials were conducted. The contributions of liming effect, oxygen-containing surface functional group adsorption, and oxyanions precipitation to Al(III) phytotoxicity mitigation by Ca(OH)2, pristine and ash-free canola straw biochar were evaluated. The […]

Abstract Biochar-supported nano-scale zerovalent iron (nZVI/BC) for persulfate (PS) activation has been studied extensively for the degradation of pollutants on the lab scale, but it was rarely applied in practical soil remediation in the field. In this research, we developed a facile ball-milling method for the mass production of nZVI/BC, which was successfully applied to […]

Abstract The application of Fe–Mn-modified biochar for the remediation of Cd-contaminated soil over long time periods has been little studied. In this paper, we describe the performance of coconut-shell-derived biochar modified with ferromanganese in relation to soil Cd stabilization and rice Cd bioaccumulation during a 3-year laboratory study. Different application dosages (0.05–0.5 wt%) and different […]

Abstract Great progress has been made in recent years to alleviate the heavy metal pollution, but the development of low-cost and eco-friendly adsorbents is still challenging. In this work, MgO-loaded biochar, as a potential adsorbent, was successfully synthesized via copyrolysis of corn straw and MgCl2∙6H2O at 600 ℃ and used for heavy metal immobilization in aqueous […]