A three-year experiment confirms continuous immobilization of cadmium and lead in contaminated paddy field with biochar amendment

Bian, Rongjun; Joseph, Stephen; Cui, Liqiang; Pan, Genxing; Li, Lianqing; Liu, Xiaoyu; Zhang, Afeng; Rutlidge, Helen; Wong, S. C. T.; Chia, Chee; Marjo, Christopher E.; Gong, Bin; Munroe, Paul; Donne, Scott W.

doi:10.1016/j.jhazmat.2014.03.017

Cited by 525 publications

(180 citation statements)

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“…However, a beneficial biochar effect was observed for P soil, since lead SPW concentrations decreased by 68% and 96% when biochar was added at 2% or 5%, respectively. A few studies have described a similar positive effect on SPW Pb concentration when biochar was incorporated to a contaminated soil: Bian et al (2014) applied a wheat straw biochar on a Pb hydroagric stagnic anthosol at three different rates (10, 20 and 40 t.ha -1 ),…”

Section: Accepted M Manuscriptmentioning

confidence: 88%

“…Secondly, biochar diminishes metal(loid) availability, as shown in several studies (Al-Wabel et al, 2014;Bian et al, 2014). In fact, biochar can complex metal ions on its surface, thereby reducing their bioavailability Houben et al, 2013).…”

Section: Accepted M Manuscriptmentioning

confidence: 94%

“…In 2013, Chintala et al observed an increase in pH and EC after application of biochar at 2, 4 and 6% on an acidic soil collected from a cultivated Entisol. This pH increase can be explained by 2 mechanisms: (i) the biochar alkaline pH induces a liming effect that increases the soil pH (Bian et al, 2014); (ii) biochar incorporation to soil releases cations and soil solution acidity is reduced by proton consumption reactions in the soil (Chintala et al, 2013). However, we did not observe any biochar effect on the pH of the SPW collected from the garden soil (G) or the mixture of P and G. These results can be attributed to the fact that both G and PG SPW pH were almost equal (around pH 8) and comparable to biochar pH (8.2).…”

Section: Spw and Technosol Physico-chemical Characteristicsmentioning

confidence: 99%

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Effect of biochar amendments on As and Pb mobility and phytoavailability in contaminated mine technosols phytoremediated by Salix

Lebrun

Macri

Miard

et al. 2017

Journal of Geochemical Exploration

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To cite this version:Manhattan Lebrun, Carmelo Macri, Florie Miard, Nour Hattab-Hambli, Mikael Motelica-Heino, et al.. Effect of biochar amendments on As and Pb mobility and phytoavailability in contaminated mine technosols phytoremediated by Salix. Journal of Geochemical Exploration, Elsevier, 2017Elsevier, , 182, pp.149-156. <10.1016Elsevier, /j.gexplo.2016 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Mining activities lead to widespread environmental pollution of terrestrial ecosystems due to the presence of metal(loid)s in tailings. These contaminated areas present a health risk and hence need to be rehabilitated. Ex situ methods for soil remediation have been used for a long time but are expensive and disruptive to soil. Phytoremediation techniques for the stabilization or extraction of metal(loid)s could be an efficient alternative as they provide a low-cost and environmentally friendly option. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPTHowever, due to the often poor nutrient content of these contaminated soils, amendments must be added to enhance plant growth and to improve phytoremediation efficiency. Biochar, a pyrogenic product, is a promising amendment for assisted phytoremediation. The aims of our study were (i) to evaluate the effect of a pinewood biochar on the physicochemical properties of a former mine contaminated technosol, (ii) to assess the mobility and phytoavailability of As and Pb and (iii) to investigate the remediation potential of three willow species (Salix alba, Salix viminalis and Salix purpurea). A greenhouse experiment was conducted with contaminated technosols amended with biochar and garden soil, single or combined, revegetated with the 3 willow species. The physicochemical properties of soil pore water (SPW) as well as metal(loid) concentrations were determined. Plant growth, Salix organ dry weight and metal(loid) uptake were determined in order to evaluate the phytoremediation potential of the three Salix species studied. Biochar increased the pH and electrical conductivity of SPW. Biochar addition had no effect on As mobility but decreased SPW Pb concentration by 70%. For the three Salix species investigated, biochar addition to the polluted soil induced a better growth and a higher dry weight production. In most modalities tested, the metal(loid)A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPTcontent in the Salix organs increased due to the biochar application. Globally, a positive effect of biochar was noticed on the soil qualities (pH and electrical conductivity increase) and plant growth.Metal(loid)s were mostly confined to the roots. Amon...

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Section: Accepted M Manuscriptmentioning

confidence: 88%

Section: Accepted M Manuscriptmentioning

confidence: 94%

Section: Spw and Technosol Physico-chemical Characteristicsmentioning

confidence: 99%

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Effect of biochar amendments on As and Pb mobility and phytoavailability in contaminated mine technosols phytoremediated by Salix

Lebrun

Macri

Miard

et al. 2017

Journal of Geochemical Exploration

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“…Biochars demonstrate clear potential for the remediation of a variety of organic and inorganic pollutants in soils, and many studies have also affirmed that biochars are good agents for immobilizing soil heavy metals and reducing their accumulation in plants [7]. Biomass such as woody material, green wastes, and animal manures can be used for biochar production.…”

mentioning

confidence: 99%

Effects of Hybrid Giant Napier Biochar on Cadmium Migration in a Cabbage-Soil System Contaminated with Cadmium and Butachlor

He¹,

Pan²,

Yu³

et al. 2017

Pol. J. Environ. Stud.

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Butachlor is an important chloroacetanilide herbicide applied in agriculture all over the world. In China, butachlor is now one of the three most widely utilized herbicides, with a yield of 1×10 4 t per year [1]. The application of butachlor in large quantities IES may cause the contamination of underground water, surfacewater, and paddy soil in China, leading to disruption of the environment and ecosystems [2]. At the same time, anthropogenic activities result in increasing pollution of heavy metals that cannot be degraded and hence accumulate in the environment. Heavy metals threaten soil quality, plant survival, and human health, and their mobility are of global concern [3]. Cadmium (Cd) is a non-essential metal element that may cause damage even at very low levels. Cd in croplands can result in enhanced dietary exposure through Pol. J. Environ. Stud. Vol. 26, No. 2 (2017), 619-625 AbstractWe investigated the effects of high-productivity plant hybrid giant Napier (HGN)-derived biochars prepared at different pyrolysis temperatures on Cd migration in a soil-cabbage system contaminated with Cd and butachlor. The results showed that with the enhancement amount of biochar applied, soil pH and electrical conductivity (EC) increased, whereas the available Cd content dropped significantly (P<0.05). The maximum decreasing value (66.08%) of the available Cd content was observed, while with 5% biochar prepared at 400ºC. Further application of this biochar caused a significant biomass increase and a Cd content decrease of cabbage (P<0.05). Notably, the cabbage biomass even increased to 573.58%. The application inhibited Cd migrations from the soil to the underground part and, successively, the overground part of the cabbage, leading to reduced bioaccumulation of Cd. With 5% biochar prepared at 400ºC, the maximum decrease of the Cd content reached up to 90% in the aboveground part and 70% in the underground part of cabbage, respectively. Hence, the investigation demonstrates that high-productivity HGN-derived biochar can be a good candidate for immobilizing Cd and reducing its bioaccumulation.

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“…Namgay et al (2010) reported that the addition of wood biochar decreased the concentration of As, Cd and Cu in maize shoots. Rongjun et al (2014) also reported the reduction in soil extractable Cd and uptake by rice plants grown in contaminated rice paddy with the application of wheat straw-derived biochar. The potential of biochar in reducing the trace elements and contaminants availability is attributed to its physicochemical properties such as porosity, surface area, pH, cation exchange capacity and organic functional groups.…”

Section: Ajabsmentioning

confidence: 93%

Characterization of Oil Palm Empty Fruit Bunch and Rice Husk Biochars and Their Potential to Adsorb Arsenic and Cadmium

Sari

Ishak

Bakar

2014

American Journal of Agricultural and Biological Sciences

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Biochar as a new soil amendment has a potential in controlling the fate of trace elements in the soil system. However, the production of biochar from different feedstocks and pyrolysis conditions resulted in variable biochar properties which have an influence on trace elements availability. The experimental works are focused on physical and chemical properties of biochars produced from Empty Fruit Bunch (EFB) and Rice Husk (RH) as heavy metals adsorbents. The morphology of EFB biochar comprise rigid structure with uniform pores size. The surface area of biochars ranged between 23.22-46.32 m 2 g −1 , dominated with mesopores. The chemical characterization of biochars revealed high carbon content in EFB biochar compared to RH biochar (54.08 and 7.78%). Both biochars are alkaline in nature (>pH 9) and contain substantial amounts of N, P, K, Ca and Mg. Fourier transform infra-red spectra showed the heterogenic functional groups on EFB biochar surface and domination of silica content in RH biochar. The batch experiment was employed to determine the adsorption capacity of these biochars for As and Cd. The adsorption data were fitted well in Langmuir isotherm with high correlation coefficient (R 2 >0.9) for As and Cd. The q max of EFB biochar for As and Cd was higher than RH biochar. The q max of EFB biochar was 0.4240 and 15.1515 mg g −1 for As and Cd, respectively. In contrast, the q max of RH biochar for As and Cd was only 0.3522 and 3.1908 mg g −1 . The results show that EFB biochar and RH biochar have potentials as good sorbent for As and Cd. Therefore, it can be suggested that the application of these biochars may possibly reduce the trace elements availability in the contaminated soil.

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A three-year experiment confirms continuous immobilization of cadmium and lead in contaminated paddy field with biochar amendment

Cited by 525 publications

References 35 publications

Effect of biochar amendments on As and Pb mobility and phytoavailability in contaminated mine technosols phytoremediated by Salix

Effect of biochar amendments on As and Pb mobility and phytoavailability in contaminated mine technosols phytoremediated by Salix

Effects of Hybrid Giant Napier Biochar on Cadmium Migration in a Cabbage-Soil System Contaminated with Cadmium and Butachlor

Characterization of Oil Palm Empty Fruit Bunch and Rice Husk Biochars and Their Potential to Adsorb Arsenic and Cadmium

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