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Details for article 20 of 64 found articles
| Title: |
Environmental Disamenities Produced by Particulate and Gaseous Emissions from Ewekoro Cement Kilns on Some Strata of Aquatic and Terrestrial Ecosystems |
| Author: |
V.F. Olaleye E.A. Oluyemi O.A. Akinyemiju |
| Appeared in: |
Journal of applied sciences |
| Paging: | Volume 5 (2005) nr. 3 pages 428-436 |
| Year: |
2005 |
| Contents: |
Disamenities caused by emissions from Ewekoro cement Kilns were monitored at some terrestrial and aquatic receptor locations. High levels of total suspended particulates (TSP) and atmospheric deposition rates (ADR) were recorded within the factory compared to auxiliary locations outside the factory. The TSP and ADR levels which are location dependent were significantly higher (p<0.05) during the dry periods than in the wet season. Irrespective of seasonal variations the key elements in the emissions were Ca2+ and Fe2+. The concentrations of Zn2+, Mn2+ and Pb+ which were trace elements were significantly higher (p<0.05) in the deposited than in the airborne particulates. An extensive vegetation structure overlap was recorded at the various sites studied. The most abundant flora belongs to the family: Poaceae with nine (9) identified species. Also, prominent at the study sites with four (4) species each was the family: Cyperaceae and Asteraceae. The planktonic flora and fauna of the river systems draining the area were poor with 16 phytoplanktonic and 9 zooplanktonic species. Numerically, the phytoplanktons were dominated by diatoms (Bacillariophyta) with Synedra sp. being the most abundant species. The zooplanktonic fauna dominated by rotifers had Lecane curvicornis as a regular occurrence in all the three catchment rivers. The physico-chemical parameters assayed were significantly higher (p<0.05) in the factory effluent discharges than in water samples from each of the catchment rivers. Seasonal variations inclusive, HCO3-, CO32-, Ca2+ and Mg2+ constituted the ionic component of water samples analysed irrespective of location. Alaguntan river which receives effluents directly from the factory had significantly higher levels (p<0.05) of the assayed ions than the other two rivers draining the cement factory catchment area. |
| Publisher: |
Asian Network for Scientific Information, Pakistan (provided by DOAJ) |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 20 of 64 found articles
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