Insight into interaction between biochar and soil minerals in changing biochar properties and adsorption capacities for sulfamethoxazole

Zhao, Zhendong; Zhou, Wenjun

doi:10.1016/j.envpol.2018.11.013

Cited by 65 publications

(21 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, when pyrolysis occurred along with the soil, the organic compounds were bound to the mineral phase, maintaining the original porosity of the soil, and thus the mixture of biomass with clayey soil resulted in a higher SSA (Table 2). Similar results were found by enriching biochar with clay minerals (Li et al, 2015;Zhao and Zhou, 2019).…”

Section: Physicochemical Properties Of Biocharssupporting

confidence: 84%

“…The contents of C and H were higher in Ri (C = 502.50 g kg −1 and H =34.81 g kg −1 ) and Cf (C = 560.50 g kg −1 and H = 41.14 g kg −1 ) compared to Ri + S, Ri + C, Cf + S, and Cf + C samples (C = 228-281 g kg −1 and H 18.07-5.97 g kg −1 ) ( Table 3), because of the diluent effect of the mineral fraction (Chia et al, 2014;Zhao and Zhou, 2019). C retention ratio was higher in Ri + S, Ri + C, Figure 1.…”

Section: Elemental Composition Of Biocharsmentioning

confidence: 99%

See 1 more Smart Citation

Variation in the properties of biochars produced by mixing agricultural residues and mineral soils for agricultural application

et al. 2020

View full text Add to dashboard Cite

The research and application of biochars enriched with minerals have increased in recent years; however, the mineral fraction used consists of specific minerals, such as clay minerals and synthesized compounds. In this work, the effects of adding two specific soil types (sandy and clayey) to rice and coffee husks in order to generate biochars via pyrolysis was investigated. Chemical, physical–chemical, thermal, spectroscopic and crystallographic analyses were conducted on the produced biochars. The study confirmed that the presence of mineral soils during the pyrolysis process increases the yield, C retention ratio, and specific surface area. It also decreases the pH, cation exchange capacity (CEC), nutrient content, and carbon-to-nitrogen ratio of biochars. However, the biochars produced by mixing coffee husks and mineral soils still demonstrate a capacity to increase the pH and the CEC of tropical soils. In addition, increased C retention demonstrates an environmental benefit of this biochar production method. Biomass pyrolysis combined with clayey soil results in a biochar with a higher degree of aromaticity and higher thermal stability when compared to biomass pyrolysis alone. These characteristics give the biochar a recalcitrant character, without the necessity for steps related to the synthesis of specific mineral compounds, which reduces the economic and energy cost of the process.

show abstract

Section: Physicochemical Properties Of Biocharssupporting

confidence: 84%

Section: Elemental Composition Of Biocharsmentioning

confidence: 99%

Variation in the properties of biochars produced by mixing agricultural residues and mineral soils for agricultural application

et al. 2020

View full text Add to dashboard Cite

show abstract

“…1) on the oxidized surface (Knicker, 2011). This oxidation consequently increased the polarity, which enhances its water solubility and its interaction with the mineral phase (Cheng et al, 2008;Fang et al, 2014;Pignatello et al, 2015;Zhao and Zhou, 2019;Zimmerman, 2010).…”

Section: Effect Of Oxidation On Pyom Mobility and Reactivitymentioning

confidence: 99%

Vertical mobility of pyrogenic organic matter in soils: a column experiment

et al. 2020

View full text Add to dashboard Cite

Abstract. Pyrogenic organic matter (PyOM) is a major and persistent component of soil organic matter, but its mobility and cycling in soils is largely unknown. We conducted a column experiment with a topsoil and subsoil of a sand and a sandy loam to study the mobility of highly 13C labeled ryegrass PyOM (>2.8 at. %), applied as a layer on a 7 cm long soil column, under saturated conditions. Further, we used fresh and oxidized PyOM (accelerated aging with H2O2) to identify changes in its migration through the soil with aging and associated surface oxidation. Due to the isotopic signature, we were able to trace the PyOM carbon (PyOM-C) in the soil columns, including density fractions, its effect on native soil organic carbon (nSOC) and its total export in percolates sequentially sampled after 1000–18 000 L m−2. In total, 4 %–11 % of the added PyOM-C was mobilized and <1 % leached from the columns. The majority of PyOM-C was mobilized with the first flush of 1000 L m−2 (51 %–84 % of exported PyOM-C), but its export was ongoing for the sandy soil and the loamy subsoil. Oxidized PyOM showed a 2–7 times higher mobility than fresh PyOM. In addition, 2-fold higher quantities of oxidized PyOM-C were leached from the sandy soil compared to the loamy soil. Besides the higher mobility of oxidized PyOM, its retention in both soils increased due to an increased reactivity of the oxidized PyOM surfaces and enhanced the interaction with the soil mineral phase. Density fractionation of the upper 0–2.3 cm, below the PyOM application layer, revealed that up to 40 % of the migrated PyOM was associated with the mineral phase in the loamy soil, highlighting the importance of mineral interaction for the long-term fate of PyOM in soils. The nSOC export from the sandy soil significantly increased by 48 %–270 % with addition of PyOM compared to the control, while no effect was found for the loamy soil after the whole percolation. Due to its high sorption affinity towards the soil mineral phase, PyOM can mobilize mineral-associated soil organic matter in coarse-textured soils, where organo-mineral interactions are limited, while finer-textured soils have the ability to re-adsorb the mobilized soil organic matter. Our results show that the vertical mobility of PyOM in soils is limited to a small fraction. Aging (oxidation) increases this fraction but also increases the PyOM surface reactivity and thus its long-term retention in soils. Moreover, the migration of PyOM affects the cycling of nSOC in coarse soils and thus influences the carbon cycle of fire-affected soils.

show abstract

“…In comparison to activated charcoal, biochar has a non-carbonized fraction that interacts with soil contaminants like glyphosate. Soil minerals can increase the surface area and pore size of biochar, which in turn increase the adsorption capacity of biochars for organic pollutants like glyphosate [37]. Biochar application can reduce the bioavailability and leachability of organic pollutants in soils through adsorption and other physicochemical reactions [38].…”

Section: Biochar's Potential Role As a Sorbent For Organic Pollutantsmentioning

confidence: 99%

Glyphosate Resistance of Chloris virgata Weed in Australia and Glyphosate Mobility Are Connected Problems

Sharma¹

2020

Sorption in 2020s

View full text Add to dashboard Cite

The purpose of this review paper is to address two major aspects of glyphosate application on farmers' fields. The first aspect is the development of glyphosate resistance in weeds like Chloris virgata, and the second aspect is glyphosate mobility, which is directly controlled by soil sorption processes and indirectly by molecule degradation processes. This is a global problem, as excessive glyphosate residues in groundwater, drinking water, and urine of subsistence farmers from intensive agricultural localities have been reported, which can pose a risk to human health. Approaches like biochar as a possible strategy to control glyphosate leaching and crop competition as a cultural method to control glyphosate-resistant weed like Chloris virgata can be the potential solutions of the glyphosate resistance and glyphosate mobility.

show abstract

Insight into interaction between biochar and soil minerals in changing biochar properties and adsorption capacities for sulfamethoxazole

Cited by 65 publications

References 52 publications

Variation in the properties of biochars produced by mixing agricultural residues and mineral soils for agricultural application

Variation in the properties of biochars produced by mixing agricultural residues and mineral soils for agricultural application

Vertical mobility of pyrogenic organic matter in soils: a column experiment

Glyphosate Resistance of Chloris virgata Weed in Australia and Glyphosate Mobility Are Connected Problems

Contact Info

Product

Resources

About