Year:2022   Volume: 4   Issue: 3   Area:

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  3. ID: 193

Iman A. HAMEED, Haleema Abdul Jabbar ABDUL RAHMAN, Alsaadi ANMAR


This study was conducted to investigate the effect of the sediments of the Hilla River on ‎the characteristics of some the sedimentary soils adjacent to the Hilla River, the sampling ‎sites were chosen in the study area along the eastern side of the Hilla River, which extends ‎from the beginning of its branching from the Euphrates River at the front of the Hilla dam in ‎the province of Babil and along the river in the south, all the way to the back of the Sadr al- ‎Daghara regulator, which is located between the provinces of Babel and Al-Diwaniyah. ‎Fifteen pedons were excavated, distributed in five transects perpendicular to the Hilla ‎River. Each transect contains three pedons and represents a unit of shoulder, basin and ‎depression. The results of soil investigations showed that there is a difference in some soil ‎morphological properties among the studied sites according to the shape of the land, it ‎was noted that there was no difference in the Hue through the wavelength of the studied ‎sites and it was 10YR, with a difference in the Value and Chroma among all the pedons of ‎the study area with depth, and indicates that the same sedimentation source (River Hilla). ‎The predominance of the two types of blocky structures (angular blocky and sub angular ‎blocky) and this shows the effect of the type of sediment. The results of the physical ‎analysis showed a variation in the soil texture for both vertical and horizontal directions ‎with the predominance of silt and sand particles and a decrease in the percentage of clay ‎particles and this depended on the sedimentation speed associated with the proximity or ‎distance of the river. As for the bulk density, its values also have changed as a result of a ‎variation in the volume distribution ratio of soil particles of sand, silt and clay. While the ‎results of the chemical analysis indicated that there is a difference in the chemical ‎properties of soils in all study transects with depth, pH values lie between neutral to ‎moderately basic (6.85-8.19) within the normal range of Iraqi soils, the electrical ‎conductivity ranged between (0.68-36.2 ds m-1) from low salinity soils to very high salinity ‎soils. As for SAR, it was low in sodium in most of the study pedons with depth, reaching ‎‎2.35, (medium to very high in some sites), and the values of the CEC ranged between ‎‎(7.49- 21.45) Cmol Kg-1, As for the soil content of total calcium carbonate (CaCO3), whose ‎values ranged between (6.52-22.17)%, the highest value of the soil content of organic ‎matter reached in most of the surface horizons compared with the subsurface horizons.‎

Keywords: Cyanobacteria, Fatty Acids, Biodiesel Du, Gc, Biodiesel Cn