Abstract:
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This research aimed to investigate the reclamation potential of
three plants residue as adsorbents materials of saline water. Salinity of
ground water constituted a serious problem in Khartoum state, it the water
efficient use of water for drinking and agricultural activities. In Soba area
most the farms converted to poultry production as a results of low water
quality, while in Hattab area agricultural activities were hampered for the
same reason despite wells availability. Water samples with different salinity
levels were collected from Hattab in North Khartoum (EC=10.45 dS/m) and
Soba area in South Khartoum (EC =3.65dS/m). The plants residues used
were wheat (Triticum aestivum) stems, Date palm (Phoenix dactylifera)
leaves and Groundnut (Arachis hypogaea) peel. The plant residues were
proceed by three methods, the first with oven at 170°C, the second with
muffle furnace at 350C° and the third with chemical treatment and converted
to crude fiber. Different diameter of polyvinyl chloride (PVC) pipes were
filled with the plant residues to form filters. the oven dried materials was
introduced in large sized PVC pipes while muffle furnace materials fiber
were transferred into small PVC pipes. . Successive 10 additions of 100 ml
saline water from the two levels were passed through columns filters.
Electrical conductivity (EC) of collected leachates was read. The results
showed that wheat stem was superior to other plants residue in the reducing
water salinity at both level, Date palm leaves was more efficient in reducing
water salinity at lower salinity level (from 3.65 to 2.7 dS/m) as compared to
high salinity level (from 54.01 to 8.0dS/m).The Groundnut peel had good
results when dried by muffle furnace at lower salinity. Oven dried treated
residues performed better than muffle furnace and crude fiber in Hattab
sample, while in Soba sample treatments of muffle furnace dried and crude
fiber were showed good capacity to reduce water salinity. This study
recommended use of crop residues in reclamation of saline water inIV
developing countries as low cost adsorbent materials and they are
economically and environmentally feasible |