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Home > Archives > Volume 20, No 11 (2022) > Article

DOI: 10.14704/NQ.2022.20.11.NQ66275

Effect of the Waste of Al-Furat State Company for Chemical Industries on some properties of agricultural soils

Abbas Saber Sarwan Al-Wataifi, Shahd Fawzi Hadi Al-Yasiri

Abstract

The current study included a statement of the impact of industrial and chemical wastes of the Al-Furat State Company on the pollution of water, soil, and its crops with heavy metals, and a study of some chemical properties affecting the behavior of heavy elements.Cultivated soils were selected located between longitudes 32° 45` 098``-32° 74` 938`` north, and two latitudes between 44° 16` 562``-44° 29` 653`` east in the Al-Mussaib district, north of Babylon.As for the extract of the study soil samples and irrigation water, the interaction degree values at the surface depth ranged between 7.90-8.40 for the water irrigated by the drainage, which has a mean reaction of 7.8, and ranged between 7.34-8.05 for the soils irrigated with regular irrigation.The electrical conductivity values ranged between 0.82-1.69 and 0.9-1.20 dS.m-1, respectively, for normal and drainage water.The soil content of heavy metals under the current study gave the highest concentrations of vanadium 40.56, zinc 75.36, nickel 77.51, chromium 32.59, and copper 89.03 mg.kg-1 for the areas irrigated with the company’s drainage water. As for the soils irrigated with regular irrigation water, they gave lower concentrations of heavy elements. Heavy elements also recorded the highest values for soil of the first region Ss1 and then soil of the fifth region Ss5 at the surface depth. The interaction of the control soil was 7.86 and 7.73, respectively, for the two depths of the current study. The electrical conductivity for soils of surface depth ranged from 1.91-3.23 and 1.08-2.28 dS.m-1, and for soils of 60-90 cm depth, between 2.46- 3.09 and 1.04-2.93 dS.m-1in the drainage and normal irrigation waters in which the electrical conductivity ranged Between 0.82-1.69 and 0.9-1.20 dS.m-1Respectively. This indicates a high electrical conductivity in the surface soil sample Ss1, and it increased in the sample soil Su1 in the area near the company’s headquarters, possibly due to the accumulation of some salts from the company’s waste resulting from the manufacture of caustic soda, and sodium hypochlorite, and this was confirmed by the results of the electrical conductivity of the drainage water, which was higher than normal irrigation water.In the study soil as a control, the electrical conductivity was 2.40 and 3.15 dS.m- 1 respectively, and with normal irrigation water with electrical conductivity 1.93 dS.m-1, it may have increased the electrical conductivity of the control soil. It appears from the results of electrical conductivity values that there is an accumulation of salts at a depth of 60-90 cm higher than the surface depth soil, due to the movement of water resulting from repeated irrigation operations of crops that carry with them a quantity of salts to the lower layers. As for the content of heavy elements in the soils of the current study, which ranged from vanadium at the surface depth soil between 23.78-40.56, zinc 29.33-75.36, nickel 37.01-77.51 mg.kg-1, and irrigated with the company’s drainage water, which also had chromium between 20.04-32.59 and copper 43.24-89.03 mg.kg-1 for the soil of the same depth. For soils irrigated with normal irrigation water, the content of elements was between 16.19-27.71, 18.04- 41.07 for zinc, 25.33-40.47 for nickel, as well as for chromium 14.06-25.21 and copper 22.81-76.58 mg kg-1.

Keywords

Waste, Al-Furat State Company, Chemical Industries, agricultural soils

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