Interaction of arsenic with biochar in soil and water: A critical review

Vithanage, Meththika; Herath, Indika; Joseph, Stephen; Bundschuh, Jochen; Bolan, Nanthi; Ok, Yong Sik; Kirkham, M.B.; Rinklebe, Jörg

doi:10.1016/j.carbon.2016.11.032

Cited by 320 publications

(99 citation statements)

References 102 publications

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“…Sasmita et al [31] made similar observation in a 15-day incubation experiment using rice husk biochar and attributed the reduction in the soil exchangeable Al to the liming effect from biochar. Also, the reduction of the exchangeable H + + Al 3+ content by biochar could be due to the formation of Al complex by the oxidized organic functional groups such as carboxylic and phenolic at the biochar surface as pointed out by Vithanage et al [35].…”

Section: Soil Exchangeable Bases and Exchangeable Aciditymentioning

confidence: 93%

Biochar and/or Compost Applications Improve Soil Properties, Growth, and Yield of Maize Grown in Acidic Rainforest and Coastal Savannah Soils in Ghana

Mensah

Frimpong

2018

International Journal of Agronomy

157

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Use of biochar for soil fertility improvement is gaining popularity due to its potential to improve soil quality, increase crop yield, and sequester carbon from the atmosphere-biosphere pool into the soil. A 40-day pot experiment was carried out to investigate the effects of corncob biochar and compost applied alone (at a rate of 2%, w/w) or in combination (1% of each, thus 1% compost + 1% biochar) on soil physicochemical properties, growth, and yield of maize on two soils of contrasting pH and texture collected from the Rainforest and Coastal Savannah agroecological zones of Ghana. Biochar and compost applied alone or in combination significantly increased soil pH, total organic carbon, available phosphorus, mineral nitrogen, reduced exchangeable acidity, and increased effective cation exchange capacity in both soils. Additionally, combined application and single application biochar or compost additions increased the plant height, stem girth, and dry matter yields of two maize (local ("ewifompe") and hybrid (Obaatanpa)) varieties used in the study. e study showed that biochar applied alone or in combination with compost offers the potential to enhance soil quality and improve maize yield.

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Section: Soil Exchangeable Bases and Exchangeable Aciditymentioning

confidence: 93%

Biochar and/or Compost Applications Improve Soil Properties, Growth, and Yield of Maize Grown in Acidic Rainforest and Coastal Savannah Soils in Ghana

Mensah

Frimpong

2018

International Journal of Agronomy

157

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“…Variations in temperature and heating duration caused complex and non-linear behavior of As(III) aq and As(V) aq . This likely reflects the varying extent and form(s) of As species incorporation/retention in char residues (Vithanage et al, 2017), contrasting effects of changes in pH (Dixit and Hering, 2003), competing interactions between solid-phase As(V) reduction/re-oxidation, as well as changes in the magnitude of As Ex formation.…”

Section: Enhanced Mobilization Of As(iii) On Re-wettingmentioning

confidence: 99%

Fire Promotes Arsenic Mobilization and Rapid Arsenic(III) Formation in Soil via Thermal Alteration of Arsenic-Bearing Iron Oxides

2019

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Arsenic in oxic surface soils readily associates with Fe(III) oxide minerals such as ferrihydrite and goethite, predominantly as As(V). Fires are a common feature in many landscapes, creating high-temperature soil conditions which drive thermal transformation of these As(V)-bearing minerals. However, it is unknown whether fire-induced transformation of ferrihydrite and goethite can alter the mobility of As, or alter As(V) speciation (e.g., via pyrolysis induced electron-transfer generating the more mobile and toxic inorganic As(III) species). Here, we subject an organic-rich soil (∼15% organic C) mixed (4:1) with As(V)-bearing ferrihydrite and goethite (total As of 2.8-3.8 µmol g −1), to various temperatures (200-800 • C) and heating durations (5-120 min) and examine the consequences for As and Fe via X-ray absorption spectroscopy, X-ray diffraction, 57 Fe Mössbauer spectroscopy and selective extracts. We show that heating transformed both ferrihydrite and goethite to mainly maghemite at temperatures >400 • C and tended to increase exchangeable surface-complexed As (As Ex) in ferrihydrite yet decrease As Ex in goethite. We demonstrate for the first time that ferrihydrite and goethite-bound As(V) can be rapidly reduced to As(III) during heating of organic-rich soil. Electrons were readily transferred to both Fe(III) and As(V), with reduction of As(V) to As(III) peaking at intermediate temperatures and time periods (maxima of ∼88% for ferrihydrite; ∼80% for goethite). Although As(III) formation was fast (within 5-10 min at temperatures >400 • C), it was followed by partial re-oxidation to As(V) at higher temperatures and longer time intervals. Additionally, combusted As-bearing ferrihydrite and goethite soil-mixtures display greatly enhanced (2-3 orders of magnitude) mobilization of inorganic As(III) aq species upon re-wetting with water. Mobilization of As(III) aq was positively correlated with solid-phase As(III) formation and was greater for goethite than ferrihydrite. These findings challenge the current prevailing view that As(V) reduction to As(III) in soil is mainly limited to waterlogged conditions and suggest that moderate-temperature fires of short duration in oxic soils, may generate substantial labile As(III) species and lead to a pulse of As(III) aq mobilization upon initial rainfall and re-wetting. Further investigation is recommended to explore the consequences for arsenic cycling in fire-prone natural landscapes and agricultural systems which involve controlled-burn practices.

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“…In the terms of environmental remediation, Chen et al (2008) systemically investigated the sorption of organic pollutants by biochar pyrolysis at different temperatures, and they found that the adsorption mechanisms of biochars were evolved from partitioning-dominant at low pyrolytic temperatures to adsorption-dominant at higher pyrolytic temperatures. Since then, many studies have been conducted to investigate the adsorption performance, adsorption mechanism and influencing factors of biochar as adsorbent to remove a wide range of pollutants, such as heavy metals (Cao et al 2009;Vithanage et al 2017;Wang et al 2015c;Wu et al 2018;Zhu et al 2017a), radioactive elements (Chen et al 2019b;Pang et al 2019), nitrogen and phosphorus (Chen et al 2011;Inyang et al 2015), polycyclic aromatic hydrocarbons (Huang et al 2019;Sun et al 2011), dyes (Qiu et al 2009), pesticides (Tang et al 2016), phthalic acid esters (Lu and Chen 2020;Zhang et al 2016), and pharmaceuticals (Frohlich et al 2019). Generally, the physical and chemical properties of biochar are largely affected by feedstock, carbonization methods (i.e., slow pyrolysis, fast pyrolysis, flash pyrolysis, pyrolytic gasification, hydrothermal treatment, and microwave carbonization), and pyrolysis parameters (i.e., temperature, holding time, and heating rate) (Cheah et al 2014;Chen et al 2015;Chu et al 2017;Lee et al 2010;Martin et al 2019;Uchimiya et al 2015;Wen et al 2017;Xiao et al 2014;Xu and Chen 2013).…”

Section: Introductionmentioning

confidence: 99%

Application of biochar-based materials in environmental remediation: from multi-level structures to specific devices

Wang

et al. 2020

Biochar

144

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The development of biochar has triggered a hot-spot in various research fields including agriculture, energy, environment, and materials. Biochar-based materials provide a novel approach against environmental challenging issues. Considering the rapid development of biochar materials, this review serves as a valuable platform to summarize the recent progress on the theoretical investigation and engineering applications of biochar materials in environmental remediation. For a better understanding of the structure-application relationships, the structural properties of biochar from macroscopic and microscopic aspects are summarized. The multilevel structures including elements, phases, surface chemistry, and molecular are highlighted to elucidate the multi-functional properties of biochars. Sorption, catalysis, redox reaction, and biological activity of biochar are briefly illustrated, which influence the transport, transformation, and removal of organic and inorganic pollutants in the environments. According to the multi-level structures and structure-application relationships of biochar, specific biocharbased materials and devices have been designed for practical environmental application. The important progress on the functionalization and device of biochar-based materials, including magnetic biochars, 2D and 3D biochar-based macrostructures, immobilized microorganism on biochar, and biochar-amended biofilters are highlighted. The environmental friendliness and sustainability of biochar-based materials, considering the whole cycle from synthesis to application, are evaluated.

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Interaction of arsenic with biochar in soil and water: A critical review

Cited by 320 publications

References 102 publications

Biochar and/or Compost Applications Improve Soil Properties, Growth, and Yield of Maize Grown in Acidic Rainforest and Coastal Savannah Soils in Ghana

Biochar and/or Compost Applications Improve Soil Properties, Growth, and Yield of Maize Grown in Acidic Rainforest and Coastal Savannah Soils in Ghana

Fire Promotes Arsenic Mobilization and Rapid Arsenic(III) Formation in Soil via Thermal Alteration of Arsenic-Bearing Iron Oxides

Application of biochar-based materials in environmental remediation: from multi-level structures to specific devices

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