Investigation into arsenic retention in arid contaminated soils with biochar application
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The contamination of arsenic (As) in soil and groundwater has posed serious hazards to food chain and ecosystem. The aim of the present study was to assess the impacts of different biochar (rice husk biochar and plant biowaste biochar at 10 and 20 t ha−1) on the retention and immobilization of As in wheat. For this purpose, soil and herbage samples were collected in the vicinity of Gujranwala, Pakistan, and characterized for different physicochemical parameters. Pot experiment was carried out on wheat plant to check the effect and uptake of As (at two concentrations, i.e., 10 and 15 mg L−1) from irrigation water as affected by biochar. The results of the collected samples showed a minimum concentration of As and maximum concentration of lead (Pb) in Gujranwala City. Moreover, iron (Fe), chromium (Cr), and manganese (Mn) were the dominant elements in the sampling area. The application of biochar increased the plant biomass of wheat as compared to control. Among the studied biochars, the application of plant biowaste biochar significant increased the retention and immobilization of As at a higher level (15 mg L−1). However, the rich husk performs better at lower As level (10 mg L−1). Both the studied amendments increased the immobilization of As but plant biowaste biochar was more effective. The plant waste biochar could be used to improve agricultural production in polluted soil by minimizing the risk of food chain contamination.
KeywordsBiochar Arsenic retention Contaminated soil Wheat
The authors acknowledge the University of Gujrat, Gujrat for the provision of support.
The authors are thankful to the Higher Education Commission, Pakistan, for the funding.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflicts of interest.
- Argos M, Kalra T, Rathouz PJ, Chen Y, Pierce B, Parvez f, Islam T, Ahmed A, Rakibuz-zaman M, Hassan R, Sarwar G, Slavkovich V, Geen A, Graziano j, Ahsan H (2010) Arsenic exposure from drinking water, and all-cause and chronic-disease mortalities in Bangladesh (HEALS): a prospective cohort study. Lancet 376(9737): 252–258CrossRefGoogle Scholar
- Bergqvist C (2011) Arsenic accumulation in various plant types. Department of Botany, Stockholm University, Sweden, PhD DissertationGoogle Scholar
- Blakemore LC, Searle PL, Daly BK (1987) Methods for chemical analysis for soils. NZ Soil Bureau Scientific report 80:78–79Google Scholar
- Flogeac K, Guillon E, Aplincourt M, Marceau E, Stievano L, Beaunier P, Frapart Y (2005) Characterization of soil particles by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR), and transmission electron microscopy (TEM). Agron Sustain Dev 25:345–353CrossRefGoogle Scholar
- Hina K (2013) Application of biochar technologies to wastewater treatment. Massey University, New Zealand, PhD DissertationGoogle Scholar
- Shankar S, Shanker U, Shikha (2014) Arsenic contamination of groundwater: a review of sources, prevalence, health risks, and strategies for mitigation. Sci World J 18Google Scholar