Greener Journal of Environment Management and Public Safety Vol. 2 (5), pp. 189-194, September 2013.
Manuscript Number: 110113939
Risk Assessment of Raw Effluents Discharged From an Industrial Estate in Lagos, Southwestern Nigeria
Department of Geography and Environmental Sciences, University of Hertfordshire, Hatfield, AL10 9AB, United Kingdom.
Email: omotayoayeni @ yahoo.com
An industrial area was selected for geo-environmental studies in Lagos due to the discharge of raw effluents into the open drains. Effluent samples were collected from nine sites and taken to the analyzing laboratory for chemical analysis. The concentrations of constituent elements were determined using Inductively Coupled Plasma (ICP) and Optical Electro Spectrometer (OES) standard methods. The results obtained for toxic heavy metals show mean concentrations in the order of abundance given as Fe>Mn>Zn>Cu>Pb>Cd.
Physico-chemical parameters, such as electrical conductivity (EC), total dissolved solids (TDS), temperature, pH and elemental composition were obtained and the trend of abundance of elements is given as Na>Ca>Mg>K>P. The coefficient of determination r2= 0.9967 obtained for EC and TDS shows a good positive correlation coefficient between the two parameters while temperature and pH varied anomalously. This study reveals that the concentrations of toxic heavy metals and physico-chemical parameters were significantly higher than the permissible limits of WHO which could pose a huge adverse effect to man and the environment. Therefore, the polluting industries have the duty-of-care to manage their effluent disposal in order to safeguard the aesthetic integrity of the environment and to ensure public safety.
Keywords: risk assessment, raw effluents, industrial estate, heavy metals, pollution, health, environment.
Call for Papers
Call for Scholarly Articles
Authors from around the world are invited to send scholary articles that suits the scope of this journal. The journal is currently open to submissions and will process and publish articles monthly in two yearly issues.
The journal is centered on quality and goes about its processes in a very timely fashion. Seasoned editors/reviewers will be consulted to review each article(s), profer quality evaluations and polish the articles with expertise before publication.
Simply send your article(s) as an e-mail attachment to firstname.lastname@example.org or email@example.com.
Call for Books
You are also invited to submit your books for online or print publication. We publish books related to all academic subject areas. Submit as an e-mail attachment to firstname.lastname@example.org.