IMMOBILIZATION AND REDUCTION OF LEAD (II) CONCENTRATION IN HIGHLY CONTAMINATED SOIL APPLIED WITH PEANUT HULL BIOCHAR

Year 2018, Volume: 2 Issue: 1, 44 - 51, 15.06.2018

Jessie Sabıjon Derby Polıquıt

Abstract

Biochar
produced from waste biomass is increasingly being recognized as a green,
cost-effective amendment for environmental remediation. The study was conducted
to determine the effectiveness of biochar in immobilizing and reducing
concentration of heavy metal particularly Lead (Pb) in contaminated soil.
Biochar prepared from peanut hull was incubated with contaminated soils at
rates of 0, 2.5, 5.0 and 10g kg^-1 soil by weight for 55 days.
Sub-sampling also was done at 25, 40, 50 and 55 days after incubation to
determine the Pb reduction effect of biochar with time. Lead concentration was
thoroughly quantified by following the aqua-regia leaching method at Soil
Pedological Laboratory, Department of Agronomy and Soil Science, Visayas State
University, Visca, Baybay City, Leyte. Results revealed that biochar was
significantly increases the phosphorus content of the soil which enhances its
effectiveness in immobilizing and reducing Pb concentration. Moreover, the
effectiveness was enhanced with increasing incubation time from day 0 to day 55
and biochar rates (0 g to 10 g kg^-1 soil). However, no significant
differences in the pH and organic matter content of the soil were observed
after addition of peanut hull biochar. After 55 days of incubation, soils
treated with the highest rate of 10g kg^-1 soil biochar showed the
highest reduction in Pb concentrations in aqua - regia leaching method. This is
due to the high phosphorus originally contained in biochar reacted with soil Pb
to form insoluble hydroxypyromorphite Pb₅(PO₄)₃(OH)
which was presumably responsible for soil Pb immobilization. The results
highlighted the potential of peanut hull biochar as one of the unique amendment
for immobilization of heavy metal particularly lead in contaminated soil. 

Keywords

Peanut hull biochar, lead immobilization

References

• Ahmad, M., Lee, s. s., Lim, J. E., Lee, S. E., Cho, J. S., Moon, D. H., Hashimoto, Y., Ok, Y. S. 2014. Speciation and phytoavailability of lead and antimony in a small arms range soil amended with mussel shell, cow bone and biochar: EXAFS spectroscopy and chemical extractions. Chemosphere 95, 433–441. Ahmad, S., Ghafoor, A., Akhtar, M. E., and Khan, M. Z. 2013. Ionic displacement and reclamation of saline-sodic soils using chemical amendments and crop rotation, Land Degrad. Develop., 24, 170–178. Ahmad, M., Usman, A. R. A., Lee, S.S., Kim, S. C., Joo, J. H., Yang, J. E., OK, Y. S. 2012c. Eggshell and coral wastes as low cost sorbents for the removal of Pb2+, Cd2+ and Cu2+ from aqueous solutions. J. Ind. Eng. Chem. 18, 198–204. Bornemann LC, Kookana RS, Welp G. 2007. Differential sorption behaviour of aromatic hydrocarbons on charcoals prepared at different temperatures from grass and wood. Chemosphere 67:1033–1042. Cao, X., Ma, L., Liang, Y., Gao, B., Harris, W. 2011. Simultaneous immobilization of lead and atrazine in contaminated soils using dairy-manure biochar. Environ. Sci. Technol. 45, 4884–4889. Ghosh, U., Luthy, R. G., Cornelissen, G., Werner, D., Menzie, C., A. 2011. In-situ sorbent amendments: a new direction in contaminated sediment management. Environ. Sci. Technol. 45, 1163–1168. Lehmann, J., Joseph, S., 2009. Biochar for environmental management: an introduction. In: Lehmann, J., Joseph, S. (Eds.), Biochar for Environmental Management Science and Technology. Earthscans, UK, pp. 1–12. Lim, J.E., Ahmad, M., Usman, A.R.A., Lee, S.S., Jeon, W.T., OH, S.E., Yand, J.E., OK, Y.S. 2013. Effects of natural and calcined poultry waste on Cd, Pb and As mobility in contaminated soil. Environ. Earth Sci. 69, 11–20. Nelson, D. W. and L. E. Sommers. 1982. Total carbon, nitrogen, and organic matter. In: A.L. Page, R.H. Miller and D.R. Keeney (eds). Methods of soil analysis: Part 2. Chemical and Microbial Properties. Agron. Monogr. 9. (2nd ed). ASA and SSSA, Madison, WI. 539-579. Okatan, V., Polat, M., Aşkın, M.A., Çolak, A.M., 2015. Determination of some physical properties of currant (Ribes spp.), Jostaberry (Ribes × Nidigrolaria Bauer) and goosberry (Ribes grossularia L.) cultivars. Ziraat Fakültesi Dergisi - Süleyman Demirel Üniversitesi 10, 83–89. Okatan, V. (2018). Phenolic compounds and phytochemicals in fruits of black mulberry (Morus nigra L.) genotypes from the Aegean region in Turkey. Folia Hort, 30(1), 93-101. Park, J.H., Choppala, G.K., Bolan, N.S., Chung, J.W., Cuasavathi, T. 2011. Biochar reduces the bioavailability and phytotoxicity of heavy metals. Plant Soil 348, 439–451. PCARR. 1980. Standard Methods of Analysis for Soil, Plant Tissue, Water and Fertilizer. Farm and Systems Res. Div. Philippine Council for Agriculture and Resources Research, Los Banos. 164 pp. Quayle, W. C. 2010. Biochar potential for soil improvement and soil fertility. IREC Newsletter. Large Area No. 182. http:www.irec.org.au/farmer_f/pdf_182/Biochar %2.0_20means%20of%storing%20carbon.pdf. Rakowska, M., Kupryianchyk, D., Harmsen, J., Grothenius, T., Koelmans, A.A. 2012. In situ remediation of contaminated sediments using carbonaceous materials. Environ. Toxicol. Chem. 31, 693–704. Roy, M. and Mcdonald, L. M. 2013. Metal uptake in plants and health risk assessments in metal contaminated smelter soils, Land Degrad. Develop., doi:10.1002/ldr.2237, in press. Sohi, S. P., 2012. Carbon storage with benefits. Science 338, 1034–1035. Usman, A.R.A., Lee, S.S., Awad, Y.M., Lim, K.J., Yang, J.E., OK, Y.S., 2012. Soil pollution assessment and identification of hyperaccumulating plants in chromate copper arsenate (CCA) contaminated sites, Korea. Chemosphere 87, 872–878. Vacca, A., Bianco, M. R., Murolo, M., and Violante, P. 2012. Heavy metals in contaminated soils of the Rio Sitzerri floodplain (Sardinia, Italy): characterization and impact on pedodiversity, Land Degrad. Develop., 23, 250–364. Zanzi, R., Sjostrom, K., and Bjornborn, E. 2002. Rapid pyrolysis of agricultural residues at high temperature. Biomass Bioenergy 23, 357–366. Zheng, R., Zheng, C., Ccao, C., Wang, X., Huang, Y., Xiao, B., and Sun, G. 2013. Effect of Biochars from Rice husk, Bran and Straw on Heavy Metal Uptake by Pot Grown Wheat Seedling in a Historically Contaminated Soil. Bioresources.com. 8 (4), 5965 – 5982.