THE EFFECTS OF MICRO- AND NANOHYDROXYAPATITE APPLICATION IN METAL CONTAMINATED SOIL ON METAL ACCCUMULATION IN IPOMOEA AQUATICA AND SOIL METAL BIOAVAILABILITY

Azlan, Kamari and Norjan, Yusof and Che Fauziah, Ishak and Esther, Phillip and Galuh, Yuliani (2014) THE EFFECTS OF MICRO- AND NANOHYDROXYAPATITE APPLICATION IN METAL CONTAMINATED SOIL ON METAL ACCCUMULATION IN IPOMOEA AQUATICA AND SOIL METAL BIOAVAILABILITY. Proceeding of International Conference On Research, Implementation And Education Of Mathematics And Sciences 2014,. (Submitted)

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Abstract

The potential of microhydroxyapatite (MHA) and nanohydroxyapatite (NHA) to immobilise heavy metals in a 25-year old active firing range soil was investigated. The effects of immobilisation were evaluated in terms of metal accumulation in water spinach (Ipomoea aquatica) and soil metal bioavailability. A pot trial was conducted by amending firing range soil with MHA and NHA at application rates of 0%, 1% and 3% (w/w). Both amendments increased biomass yield and reduced plant metal uptake. The bioconcentration factor (BCF) values of the metals were in the order of Zn > Cu > Pb. The bioavailable fraction of Cu, Pb and Zn in firing range soil decreased significantly (p < 0.05) following MHA and NHA treatments. No toxicity symptoms were observed in water spinach over the pot trial. Therefore, MHA and NHA are two promising immobilising agents for the remediation of metal contaminated land.

Item Type: Article
Uncontrolled Keywords: Contaminated soil, heavy metal, soil stabilisation, water spinach, microhydroxyapatite, nanohydroxyapatite
Subjects: Prosiding > ICRIEMS 2014 > CHEMISTRY & CHEMISTRY EDUCATION
Divisions: Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Jurusan Pendidikan Kimia > Kimia
Depositing User: Eprints
Date Deposited: 06 Nov 2014 02:23
Last Modified: 06 Nov 2014 02:23
URI: http://eprints.uny.ac.id/id/eprint/11337

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