Impacts of Woody Biochar Particle Size on Porosity and Hydraulic Conductivity of Biochar-Soil Mixtures: An Incubation Study

Esmaeelnejad, Leila; Shorafa, M; Gorji, M.; Hosseini, Seiyed Mossa

doi:10.1080/00103624.2017.1383414

Cited by 38 publications

(27 citation statements)

References 19 publications

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“…A 140‐day incubation period had a nonsignificant effect on both runoff and soil loss. The properties of biochar‐added soil were altered by the amount of biochar added and the incubation time (Abujabhah et al, ; Esmaeelnejad et al, ; Jien & Wang, ). However, the biochar‐added soil was a complex system.…”

Section: Discussionmentioning

confidence: 99%

“…The biochar was crushed, passed through a 2‐mm sieve, and mixed thoroughly (Asai et al, ; Jien & Wang, ; Li et al, ; Li et al, ; Sadeghi et al, ). Although the effects of biochar particle size on soil properties have been reported (Esmaeelnejad, Shorafa, Gorji, & Hosseini, ; Nocentini, Certini, Knicker, Francioso, & Rumpel, ; Obia, Borresen, Martinsen, Cornelissen, & Mulder, ; Obia, Mulder, Martinsen, Cornelissen, & Borresen, ), in most cases, a biochar particle size of less than 2 mm was widely used in practice because it was similar to the soil particle size (Hseu et al, ; Jien & Wang, ; C. H. Lee et al, ; Z. G. Li et al, 2017; Sadeghi et al, ). To ensure a similar particle size distribution for different treatments, the crushed, passed, and thoroughly mixed biochar was evenly divided into three parts for the subsequent experiments.…”

Section: Methodsmentioning

confidence: 99%

“…The incubation time influences the properties of biochar‐added soil (Abujabhah et al, ; Esmaeelnejad et al, ; Jien & Wang, ) and may subsequently alter soil erodibility. The incubation experiment was conducted in the United States Department of Agriculture–Agricultural Research Service (USDA‐ARS) National Soil Erosion Research Laboratory in West Lafayette, IN.…”

Section: Methodsmentioning

confidence: 99%

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Rainfall simulation experiments indicate that biochar addition enhances erosion of loess‐derived soils

et al. 2019

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Biochar addition to soil has increasingly demonstrated the potential to improve soil and mitigate climate change. However, the effects of biochar additions for sloping cropland amendments and soil erosion remain unclear. In this study, experiments with simulated rainfall (25, 50, 75, and 100 mm hr‐1) were conducted on a soil box (0.45‐m length × 0.3‐m width) to assess the effects of different biochar addition rates (2%, 5%, and 8% [wt/wt]) and incubation time (i.e., 140 days) on runoff, soil loss, and interrill erodibility. The soil and biochar were loess‐derived Miami soil and commercial charcoal made from seasoned oak and hickory hardwoods, respectively. Compared with the control soil, biochar addition decreased the total runoff by 2.4–10.8% (p > 0.05) and significantly increased the total soil loss and interrill erodibility (p < .05) by 20.8–50.8% and 20.4–29.2%, respectively. The changes in runoff, soil loss, and interrill erodibility were ruleless with an increase in the rate of biochar addition from 2% to 8%. The differences in runoff, soil loss, and interrill erodibility were nonsignificant among most biochar‐added treatments. After a 140‐day incubation period, total runoff and soil loss increased by 1.5–6.2% and 5.7–10.3%, respectively, and interrill erodibility increased for the 2% biochar addition and decreased for the 5% and 8% biochar additions. However, nonsignificant differences in runoff, soil loss, and interrill erodibility were observed before and after incubation. Our results implied that biochar addition to soil could increase the risk of erosion on sloping croplands, and thus, one should exercise caution when amending soil with biochar on sloping croplands.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Rainfall simulation experiments indicate that biochar addition enhances erosion of loess‐derived soils

et al. 2019

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“…The wood-derived BioC was also characterized by scanning electron microscopy (SEM) ( Figure 1). organic compounds of BioC [37]; these functional groups indicate that BioC has favorable sorption properties.…”

Section: Methodsmentioning

confidence: 99%

“…Moreover, BioC was characterized by alkaline pH (values: 8.25 and 7.21, measured in H 2 O and CaCl 2 , respectively), which most likely resulted from the presence of alkaline cations [36]. The much higher Q value in relation to the soils indicated the presence of various functional groups in the organic compounds of BioC [37]; these functional groups indicate that BioC has favorable sorption properties.…”

Section: Methodsmentioning

confidence: 99%

Impact of Biochar on Physicochemical Properties of Haplic Luvisol Soil under Different Land Use: A Plot Experiment

2019

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There is limited information regarding the effect of biochar (BioC) on improving the fertility of degraded soils (fallow and grassland), particularly with respect to changes with time. The objective of the study was to evaluate, in a three-year field experiment, the influence of BioC on the physicochemical properties of Haplic Luvisol. BioC, obtained via wood waste pyrolysis at 650 °C, was applied to the soil of subplots under fallow and grassland at rates of 0, 1, 2, and 3 kg·m−2. Soil samples were collected eight times, from 2013 to 2015. Physicochemical characterization was performed for soil and BioC by analyzing density, pH, surface charge, as well as ash and organic carbon content. BioC’s influence on the physicochemical properties of degraded soils was determined by analyzing the changes in pH, specific surface area, radius, and volume of the micropore. The addition of BioC affected analyzed soils to varying degrees. In the case of the fallow, a positive effect on changes in these parameters was observed, particularly at the highest biochar dose and for the last year of the experiment. However, for the grassland, in most cases we observed the opposite trend—for example, pH and specific surface area values decreased with increasing biochar dose. We believe that it is necessary to examine how BioC affects sorption properties of organic matter of fallow and grassland soils, as well as the BioC’s influence on humic acids of these soils as a function on BioC dose and function of time.

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Interactions between flue gas desulfurization gypsum and biochar on water infiltration characteristics and physicochemical properties of saline-alkaline soil

Wang,

Lin,

Liu

et al. 2023

Environ Monit Assess

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The application of flue gas desulfurization gypsum (FGDG) improves the soil structure, reduces soil pH, and accelerates soil salt leaching. Biochar amendment to soil can affect the soil infiltration rate, increase soil porosity, decrease soil bulk density, and enhance the water retention capacity. This study investigated the interactive effect of FGDG and biochar on water infiltration characteristics and physicochemical properties as well as determined the optimal amendment rate as a saline-alkaline soil conditioner. Seven experimental schemes were designed, and the newly reclaimed cultivated soil from Pingtan Comprehensive Experimental Zone in Fujian Province, China, was used in an indoor soil column experiment to simulate soil infiltration. Five models were employed to describe the infiltration process. The power function was used to represent the dynamic process of the wetting front. The conclusions of this study are as follows: (1) there was a reduction in the infiltration capacity of saline-alkaline soil (sandy soil) in each treatment, and the application of FGDG alone had the highest inhibition effect compared to the control (CK). The Kostiakov model provides the best fit for the experimental data of soil cumulative infiltration. (2) All treatments increased the total porosity and water content of saline-alkali soil, with the combined application of FGDG and biochar found to be more effective. (3) The application of FGDG alone or in combination with biochar decreased the pH and increased the electrical conductivity of the saline-alkali soil significantly, with the combined application having the most significant effect. In contrast, soil amended with biochar alone had minimal effect on the pH and EC of the soil. (4) The best improvement ratio was achieved with the F1B2 combination (75 g/kg FGDG + 30 g/kg biochar).

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Impacts of Woody Biochar Particle Size on Porosity and Hydraulic Conductivity of Biochar-Soil Mixtures: An Incubation Study

Cited by 38 publications

References 19 publications

Rainfall simulation experiments indicate that biochar addition enhances erosion of loess‐derived soils

Rainfall simulation experiments indicate that biochar addition enhances erosion of loess‐derived soils

Impact of Biochar on Physicochemical Properties of Haplic Luvisol Soil under Different Land Use: A Plot Experiment

Interactions between flue gas desulfurization gypsum and biochar on water infiltration characteristics and physicochemical properties of saline-alkaline soil

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