Advanced Journal of Environmental Science and Technology

Advanced Journal of Environmental Science and Technology ISSN 2756-3251, Vol. 16 (5), pp. 001-006, May, 2025. Available online at www.internationalscholarsjournals.org © International Scholars Journals

Full Length Research Paper

Water Quality Assessment of Shanomi Creek, Niger Delta: Physicochemical Parameters, Heavy Metals, and Bacterial Contaminants

Igbinosa E. O.1*, Uyi O. O.2, Odjadjare E. E.3, Ajuzie C. U.1, Orhue P. O.4 and Adewole E. M.4

1Department of Microbiology, Faculty of Life Sciences, University of Benin, PMB 1154, Benin City, Nigeria.
2Animal and Environmental Biology Department, Faculty of Life Sciences, University of Benin,
PMB 1154 Benin City, Nigeria.
3Department of Basic Sciences, Faculty of Basic and Applied Sciences, Benson Idahosa University, PMB 1100,
Benin City, Nigeria.

4Department of Microbiology, Faculty of Natural Sciences, Ambrose Alli University, PMB 14, Ekpoma, Nigeria.

Accepted 23 March, 2025

The physicochemical and microbial qualities of Shanomi creeks in the Niger Delta of Nigeria were assessed between January and October 2011. The temperature across sampling stations ranged between 26 and 27.7°C, while pH varied from 7.49 to 8.74. Turbidity ranged from 176.62-189.96 NTU and conductivity varied between 360.45 and 454.88 µS/cm. The concentrations of other physicochemical parameters were as follows: BOD (6.39-7.64 mg/L) COD (84.25-97.27 mg/L); ammonia (26.83-33.98 mg/L); nitrate (37.25-43.89 mg/L); nitrite (37.35-41.75 mg/L); and phosphate (28.83-37.85 mg/L). The relative dominance of metals in the water followed the sequence: Al > Zn > Cu > Fe > Mn > Cd > Pb > Hg > As. Feacal and total coliform densities ranged from 1.05 × 102 to 4.25 × 103 (cfu/mL) and 1.56 × 102 to 6.40 × 104 (cfu/mL) respectively. The study reveals that the water under study was heavily polluted and of serious threat to the aquatic biota and public health.

Key words: Aquatic biota, contamination, pollution, public health, microbial indicators, toxic effects.
 

Advanced Journal of Environmental Science and Technology ISSN 2756-3251, Vol. 16 (5), pp. 001-013, May, 2025. Available online at www.internationalscholarsjournals.org © International Scholars Journals

Full Length Research Paper

Groundwater Recharge Assessment in the Thiaroye Sandy Aquifer, Senegal: Combining WTF, CMB, and Isotopic Techniques

Ousmane Coly Diouf1*, Seynabou Cissé Faye1, Mathias Diedhiou1, Mariama Kaba1, Sérigne Faye1, Cheikh Bécaye Gaye1, Abdoulaye Faye1, Andreas Englert2 and Stefan Wohnlich2

1Geology Department, Faculty of Sciences and Techniques, University Cheikh Anta Diop, Dakar, B.P. 5005, Dakar-Fann, Senegal.

2Department of Applied Geology, Ruhr University of Bochum, Universitaetsstr. 150, D-44801 Bochum, Germany.

Accepted 21 March, 2024

The quaternary sandy sediments which cover most part of the Cap Vert peninsula bear considerable groundwater resources. The aquifer lying beneath a densely populated suburb zone is encountered with major issues such as induced recharge from anthropogenic surface derived pollution and rising water table to ground surface. The present study was aimed at investigating the recharge in the unconfined aquifer of Thiaroye zone using both water table fluctuation (WTF), chloride mass balance (CMB) methods and environmental isotopes. Seasonal fluctuations of groundwater in response to precipitation are monitored during time period (2010 to 2011) using “Thalimede Orpheus mini” recorders in two piezometers (P3-1 and PSQ1) as well as long term record. Chemical and isotopic characterization of groundwater, rainfall and the unsaturated zone were also carried out using a network of 48 points consisting of 8 rainfall stations, 10 unsaturated zone profiles and 30 dug wells, boreholes and piezometers. The concentrations of chloride in rainwater are between 3.2 and 53.4 mg/L. These unsaturated zone profiles range from 65 and 572 mg/L. The recharge obtained by WTF method ranged between 18 and 144 mm during the rainy season (June to October), whereas the recharge given by CMB method ranged between 8.7 and 73 mm/year. The Thiaroye aquifer recharge obtained from these different methods also showed relatively similar range values. In this study, the WTF method applied computes both infiltration from rainwater and domestic waste water, while the CMB method estimates potential recharge from rainwater. Therefore, in the urban area, the CMB method cannot be applied due to the chloride input from waste water infiltration.

Key words: Thiaroye basin, recharge, isotopes, chloride mass balance (CMB), quaternary sandy aquifer (Dakar).

Advanced Journal of Environmental Science and Technology ISSN 2756-3251, Vol. 16 (5), pp. 001-008, May, 2025. Available online at www.internationalscholarsjournals.org © International Scholars Journals

Full Length Research Paper

Assessing the Environmental Toxicity of Treated Effluent from a Lagos Textile Industry

Odjegba V. J.* and Bamgbose N. M.

Department of Botany, University of Lagos, Akoka, Lagos, Nigeria.

Accepted 02 January, 2025

Water pollution caused by industrial effluent discharges has become a worrisome phenomenon due to its impact on environmental health and safety. Textile industries contribute immensely to surface water deterioration and are categorized among the most polluting in all industrial sectors. For this reason, the toxicity of treated textile effluent was assessed in Celossia argentea by exposing them to effluent-polluted surface water from Ibeshe River. In the present study, parameters investigated includes, growth, photosynthetic pigment content, lipid peroxidation, and metal accumulation. The results showed that treated textile effluent from Nichemtex Company, affected the growth, dry biomass, root development and photosynthetic pigment content of C. argentea. The treated effluent caused 41% growth inhibition while the total chlorophyll decreased by 59.87% in relation to the control plants. Furthermore, it also elevated the levels of lipid peroxidation and heavy metals in the plant. It was therefore implicated that treated textile effluent entering Ibeshe River could cause toxic effects on organisms. It was emphasized that using the water for irrigation and as portable water in its present state is unsafe.

Key words: Textile effluent, toxicity, surface waters, growth inhibition, Celosia argentea.
 

Advanced Journal of Environmental Science and Technology ISSN 2756-3251, Vol. 16 (4), pp. 001-006, April, 2025. Available online at www.internationalscholarsjournals.org © International Scholars Journals

Full Length Research Paper

Toxicity of Erythrophleum suaveolens Saponin on Lanistes lybicus: A Study on Freshwater Snail Tissues

Akinpelu, B. A.1, Dare C. A.1, Adebesin F. I.1, Iwalewa E. O.2 and Oyedapo O. O.1*

1Department of Biochemistry, Faculty of Science, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria.
2Department of Phamacology, Faculty of Pharmacy, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria.

Accepted 14 January, 2025

The study investigated the activity of saponin from ethanolic extract of Erythrophleum suaveolens stem bark against freshwater snail, Lanistes lybicus. The crude saponin (4 g) was separated by silica gel using gradient elution with dichloromethane in methanol (100:0 to 0:100) followed by thin layer chromatography using precoated silica gel 60 F254. Fractionated saponins (90:10, 80:20 and 70:30) were employed for snail toxicity using fresh water snails, L. lybicus. The biochemical changes were evaluated in haemolymph, muscle, intestine and hepatopancreas of fresh water snails exposed to sub-lethal dose of fractionated saponins. Elevation of activities of acid and alkaline phosphatase in the intestine and hepatopancreas, haemolymph and total protein level were observed. The activity of acetylcholinesterase was inhibited in the haemolymph, muscle, hepatopancreas and intestine of the snails. The activity of saponin was observed to be dose dependent as mortality increased with relative increase in the saponin concentrations. The study provides considerable scope in exploiting local indigenous plant resources for control of fresh water snails and monitor water pollution.

Key words: Erythrophleum suaveolens, saponin, molluscicidal activity, Lanistes lybicus, pollution, hepatopancreas.

Advanced Journal of Environmental Science and Technology ISSN 2756-3251, Vol. 16 (4), pp. 001-006, April, 2025. Available online at www.internationalscholarsjournals.org © International Scholars Journals

Full Length Research Paper

Utilizing Agama Lizards for Environmental Monitoring: A Study on Heavy Metal Pollution

J. A. O. Oyekunle*, A. S. Adekunle, A. O. Ogunfowokan, M. S. Akanni and O. S. Coker

Department of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria.

Accepted 8 January, 2025

In this study, the suitability of Agama lizard as a biomarker in assessing environmental pollution levels of arsenium (As), barium (Ba), cadmium (Cd), copper (Cu), manganese (Mn), lead (Pb) and zinc (Zn) was investigated. Samples of top soil and agama lizards were taken from five sites within a university community in Nigeria for the study. Soil samples, livers and kidneys from the lizards were subjected to wet acid digestion and levels of heavy metals in the digested samples were determined using an atomic absorption spectrophotometer (AAS). Results of the study showed that the levels of the metals ranged from Cd, 20.4 ± 2.6 μg/g to Zn, 978.6 ± 2.2 μg/g in soil; Cd, not detected to Zn, 42.2 ± 0.3 μg/g in liver; As and Ba, not detected to 47.6 ± 1.0 μg/g Zn in kidney. The inter matrices correlation coefficient values obtained for the heavy metals showed that the kidney of lizards would be more relevant in assessing soil levels of such heavy metals as As, Ba, Cd, Mn and Pb among others.

Key words: Agama lizard, environmental pollution, soil, heavy metals, liver, kidney.
 

Advanced Journal of Environmental Science and Technology ISSN 2756-3251, Vol. 16 (3), pp. 001-005, March, 2025. Available online at www.internationalscholarsjournals.org © International Scholars Journals

Full Length Research Paper

Environmental Pollution Assessment of an Industrial Estate in South-West Nigeria: A Load Estimation Study

Effiong Ukorebi ETIM

Department of Chemistry, University of Ibadan, Ibadan, Nigeria. E-mail: [email protected]. Tel: +234-08033690012.

Accepted 19 January, 2025

The Ota industrial estate being one of the largest in the southwestern Nigerian, contributes significantly to its socio-economic development. This study is design to generate the much needed industrial emission data for efficient environmental monitoring and compliance. The industrial pollution projection survey (IPPS) and rapid pollution inventory survey (RPIS) models developed by the World Bank were used for the estimation of pollution loads. The results showed that a total of 6970 tons/yr of air pollutants (SO2, NO2, CO, VOC and PM), 10800 tons/yr of wastewater pollutants (BOD and TSS) and 1090 tons/yr of toxic pollution (air, land and water) were released into the environment from the industrial estate. Carbon monoxide accounted for the highest air pollution load representing 57.5%. About 64.0% of the total pollution load of the industrial estate was contributed by industries in the basic metal, iron, steel and fabricated metal works sector. There is need for industrial emission monitoring and enforcement for pollution control and abatement. Similarly, efficient and environmentally friendly waste management practices should be adopted within the confines of this all-important industrial estate.

Key words: Industrial pollution projection survey (IPPS), rapid pollution inventory survey (RPIS), models, industrial estate, industrial emission, carbon monoxide.