Suppression of Chlorantraniliprole Sorption on Biochar in Soil–Biochar Systems

Abstract

The sorption behavior of chlorantraniliprole (CAP) by biochar and effect of soil extracts on sorptivity in soil-biochar systems were examined. The results showed that biochar amendment could enhance the sorption of CAP in soils. The values of K F increased significantly when the soils were amended with 0.5 % BC850, which were from 1.54 to 196.5. The indigenous sorptivity of biochar was suppressed after it was applied to the soils. The degree of biochar sorptivity attenuation in different soil-biochar systems varied with the properties of soil water soluble matters. Sorption of CAP by biochar from the five soil extracts was found to be lower than that from a CaCl2 solution. The calculated K d values at C w of 0.01 mg kg(-1) for biochar sorption of CAP from CaCl2 solution were 21.4-26.6 times of that from soil extracts. Aging of biochar in soil extract reduced CAP sorption by up to 85 %.

Impact of Simulated California Rice-Growing Conditions on Chlorantraniliprole Partitioning

“…biochar into Chinese soils ( f om and percent clay were 0.012−0.046 and 12−56%, respectively) increased the Log K F of CAP from 0.18 to 2.29. 34,35 A significant increase in sorption was seen between 15 and 35 °C (P = 0.0326), while no significant change was observed between sorption at 25 °C and both 15 and 35 °C, consistent with previous observation that high temperature will enhance the sorption of organic compounds to rice field soils. 36 Therefore, the soil−water partitioning of CAP could be significantly impacted by early growing season temperature fluctuations, however, as the temperature stabilizes to daily fluctuations between 18−22 °C, it is not expected to impact the sorption of CAP to California rice field soils.…”

Adsorption of Cadmium on Degraded Soils Amended with Maize-Stalk-Derived Biochar

“…The inhibition and acceleration effect is one of the most critical factors when considering the biochar amendment to enhance the sorption and reduce the immobilization of soil contaminants. Generally, it is hard to calculate the sorption capacity of two sorbents though mechanical addition due to the inhibition or acceleration effect in bisorbents [ 43 ]. The sorption inhibition or acceleration effect of the soil–biochar system is influenced by the properties of sorbate pollutant (inorganic or organic, polar or nonpolar, aromatic or aliphatic), biochar (pyrolysis temperature and feedstocks), and soil (types, SOM content) [ 26 ].…”

Organochlorine POPs sequestration strategy by carbonaceous amendments of contaminated soils: Toward a better understanding of the transfer reduction to laying hens

“…Regarding biochars, BC2 displayed a higher surface area than BC1 (281 ± 11 m 2 g −1 vs 31 ± 2 m 2 g −1 respectively), confirming that higher pyrolysis temperature produces biochars with higher surface areas (Chen et al, 2008, Delannoy et al, 2018, Khalid et al, 2020, Park et al, 2015, Yang et al, 2019. In addition, Oak 700 and Knotweed 700 displayed different characteristics such as specific surface area (281 ± 11 m 2 g −1 vs 196 ± 6 m 2 g −1 respectively), mesoporosity (absence of mesoporosity vs 0.03 cm 3 g −1 respectively) and pore width (100% of relative pore distribution between 20 nm and 300 nm vs >97% lower than 20 nm), indicating the role of raw material in generating different porous characteristics and confirming that BC originating from wood material present higher porosities than those originating from herbaceous material (Behazin et al, 2015, Keiluweit et al, 2010, Wang et al, 2015.…”