Phytoremediation of heavy metals contaminated soils by forest tree species

Nik M. Majid, . and Shibli N.M., . and M.S. Noor Azhar, . and A. Arifin, . (2011) Phytoremediation of heavy metals contaminated soils by forest tree species. [Proceedings Paper]

This paper highlights phytoremediation potential of high value forest tree species. Results of two timber species were presented to provide an overall picture of value added forest rehabilitation activity and potential commercialization of phytoremediation technique in rehabilitating heavy metals contaminated soil. The problems associated with contaminated soils and waste management in Malaysia are complex because of the quantity and nature of the waste materials. The study was conducted in two phases i.e. screening of suitable plant species under greenhouse conditions treated with different levels of sludge contamination. A pilot study in the field was also conducted on a sewage sludge disposal site. Results showed that Acacia mangium is the most promising species for phytoremediation. This species can tolerate high concentrations of heavy metal fast-growing and accumulate high amounts of heavy metals in the harvestable parts. Under greenhouse conditions the accumulation of Zn and Cd in the aboveground parts ranged from 185.60 - 269.24mg/kg and 1.16 2.66mg/kg respectively. In field condition A. mangium also showed similar potential as observed in the greenhouse. A. mangium was expected to produce about 75 t/ha/year harvestable biomass which would be able to remove 745.8 and 44.6 kg/ha/year estimated Zn and Cd respectively by pruning. Thus an amount of about 745.8kg/ha/year of Zn and 44.6kg/ha/year of Cd was estimated would be removed by pruning.

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Abstract

This paper highlights phytoremediation potential of high value forest tree species. Results of two timber species were presented to provide an overall picture of value added forest rehabilitation activity and potential commercialization of phytoremediation technique in rehabilitating heavy metals contaminated soil. The problems associated with contaminated soils and waste management in Malaysia are complex because of the quantity and nature of the waste materials. The study was conducted in two phases i.e. screening of suitable plant species under greenhouse conditions treated with different levels of sludge contamination. A pilot study in the field was also conducted on a sewage sludge disposal site. Results showed that Acacia mangium is the most promising species for phytoremediation. This species can tolerate high concentrations of heavy metal fast-growing and accumulate high amounts of heavy metals in the harvestable parts. Under greenhouse conditions the accumulation of Zn and Cd in the aboveground parts ranged from 185.60 - 269.24mg/kg and 1.16 2.66mg/kg respectively. In field condition A. mangium also showed similar potential as observed in the greenhouse. A. mangium was expected to produce about 75 t/ha/year harvestable biomass which would be able to remove 745.8 and 44.6 kg/ha/year estimated Zn and Cd respectively by pruning. Thus an amount of about 745.8kg/ha/year of Zn and 44.6kg/ha/year of Cd was estimated would be removed by pruning.

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Item Type:	Proceedings Paper
Additional Information:	3 tables; 11 ref. QH 541.5 R27 I61 2011
AGROVOC Term:	Phytoremediation
AGROVOC Term:	Forest trees
AGROVOC Term:	Species
AGROVOC Term:	Acacia mangium
AGROVOC Term:	Heavy metals
AGROVOC Term:	Contamination
AGROVOC Term:	Malaysia
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:13
URI:	http://webagris.upm.edu.my/id/eprint/11226

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