Mechanisms of alachlor and pentachlorobenzene adsorption on biochar and hydrochar originating from Miscanthus giganteus and sugar beet shreds

Microbially inoculated chars strongly reduce the mobility of alachlor and pentachlorobenzene in an alluvial sediment

“…Transport of organic compounds through the sediment column showed that the retention time increased with increasing molecular hydrophobicity, indicating that the hydrophobicity of a molecule provides a reasonable parameter for the prediction of its sorption and transport behavior under the conditions investigated. Also, a previous study of the sorption potential of the four selected materials showed that both the raw material (chars from M. giganteus and sugar beet shreds) and the HTC temperature affect the sorption process of alachlor and PeCB (Jevrosimov et al, 2021). The adsorption was found to fit well with the Freundlich isotherm, and it was shown that the adsorption of the studied pollutants on these adsorbents depends on the molecular hydrophobicity.…”

“…Synthesis of biochar and hydrochars was carried out as previously shown (Jevrosimov et al, 2021). The production of biochar included the application of slow pyrolysis of the investigated biomass ( M. giganteus ) at a temperature of 400 °C.…”

“…Pentachlorobenzene has been used in the production of the pesticide quintozene (pentachloronitrobenzene), and in a variety of chlorobenzene mixtures to reduce the viscosity of dielectric fluids. In addition, different sources of PeCB in the environment include various industrial processes and the degradation of other chemicals (Halse et al, 2015; Jevrosimov et al, 2021). It has also been detected in groundwater at concentrations of 0.25–1.7 ng/L (Teijon et al, 2010).…”

“…The adsorption data for different organic compounds on similar carbon‐based materials such as biochar and hydrochar are compared and discussed in detail in a paper by Jevrosimov et al (2021). In general, biochar has been considered a potential surrogate for activated carbon for water treatment and environmental remediation given its low cost and comparative sorptive abilities (Pak et al, 2022; Wang et al, 2022).…”

Batch Pyrolysis and Co-Pyrolysis of Beet Pulp and Wheat Straw

“…Co-pyrolysis studies of Miscanthus giganteus and sugar beet shreds were also performed, examining the adsorption mechanism of alachlor and pentachlorobenzene of chars. The studies demonstrated that biomass conversion temperature affects the production process in terms of chars’ quantity and physicochemical properties [ 36 ].…”