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Phytoremediation of Agricultural Land Polluted with Heavy Metals in Wadi-Alsamin- Hebron.

Prepared By:

Land Research Center Presented By: Murad Alhousani


Project Title: Soil Pollution Treatment in Wadi AlsaminHebron Area Implemented By: Land Research Center. Supervised By: Berziet University Dr. Jamil Harb Funded By: GEF /SGP/UNDP (Ref.No. PAL10 _ 71645)


LRC Profile: Palestinian NGO, Non - Profit established in 1986 as part of Arab Studies Society. Programs: 1. Human Right Program . 2. Natural Resource Management Program. 3. Researches & Studies Program .


Background


WW stream pass through: 18 Palestinian communities


Wastewater Stream Length: 44 km Width: 10 – 20 m Affect: 6,846 Agricultural Dun.


Wastewater Stream Sources: 1. Palestinian Domestic Wastewater 2. Palestinian Industrial Wastewater 3. Wastewater from Israeli Settlements

Wastewater stream daily discharge 13,000 m3


Research Objectives  To evaluate the pollution level by heavy metals in the polluted soil. To investigate the extent of plant efficiency in remediation of the polluted soil in the study area.


Material & Method


Methodology 1.Field Survey. Including “ Soil Analysis�. 2.Selection of Local Phytoremediation Plants. 3.Experimental Design. 4.Measurements of Heavy Metals. 5.Data Analysis.


1. Field Survey, Including “ Soil Analysis” • • • •

Interviews with Stakeholders. Determination of Targeted areas. Soil Sampling. Measurements of Heavy Metals Content.


2. Selection of Local Phytoremediation Plants • Corn and Tobacco were selected according to : • Literature review • Local Varieties


3. Experimental Design


Experimental Design – Ex. Of Field Plot


4.Measurements of Heavy Metals “Soil & Plant”


5. Data Analysis


Results


1. Heavy metals content in Soil (mg/kg) 10 – 50

300 – 1000

20– 200

10– 50

10 – 30

Levels1

Cr

Mn

Zn

Ni

Pb

HP

173.7a

53.3a

68.0a

21.5a

0.0a

MP

147.0ab

48.7a

ND

7.5a

0.0a

SP

121.3b

44.3a

ND

5.0a

47.0a

O.S

101.3c

531.7b

86.2a

47.0b

0.0a

•HP: High polluted, MP; Medium polluted; SP: Slightly polluted, O.S: Outside Stream Area. •Typical Trace element content in soil. ADRIANO(2001), KABATA-PENDIAS (2000).


Bioaccumulation Factor “BF” of Corn and Tobacco Plant

Cr

Mn

Zn

Ni

Pb

Levels

Corn

Tobacco

Corn

Tobacco

Corn

Tobacco

Corn

Tobacco

Corn

Tobacco

HP

0.04a 0.03a 0.28ab 0.44a 1.57a 1.57a 0.24a

0.07a

0.00

0.00

MP

0.12a 0.04a

0.33a 0.40ab 0.00

0.00

2.96a

0.34a

0.00

0.00

SP

0.20a 0.04a

0.35a

0.49a

0.00

0.8a

0.12a

0.00

0.00

O.S

0.18a 0.13a

0.11b

0.17b 0.95a 0.91a 0.45a

0.19a

0.00

0.00

0.00

•HP: High polluted, MP; Medium polluted; SP: Slightly polluted, O.S: Outside Stream Area.


Conclusion • Corn plant is more efficient for extraction of Cr, and Ni metals, whereas the tobacco plant is better for Mn metals. • This study clearly confirm that cultivation of soil exposed to untreated wastewater effluent lead to bioaccumulation of toxic metals in edible crops. • Further studies are still necessary for improving phytoremediation of polluted soil.


Thanks For Listening & Attention


مراد الحوساني/مركز ابحاث الاراضي