scholarly journals Assessment of the Physicochemical Parameters of Bodo Creek, Rivers State, Nigeria: A Pre-spill, Post-spill and Post-clean-up Review

2021 ◽  
Vol 25 (8) ◽  
pp. 1505-1512
Author(s):  
D.K. Nkeeh ◽  
A.I. Hart ◽  
E.S. Erondu ◽  
N. Zabbey
Keyword(s):  
Oil Spill ◽  
Physicochemical Parameters ◽  
Oil Spills ◽  
Oxygen Demand ◽  
Total Hardness ◽  
Before And After ◽  
The Difference ◽  
Temperature Levels ◽  
High Level ◽  
Rivers State

Water bodies are a source of ecosystem services such as water supply, production, recreation, and aesthetics. In 2008, two major oil spills took place in Bodo creek. A major challenge with the assessment and monitoring of an environment is the lack of baseline data. However, Bodo Creek has been studied extensively. This paper, therefore, reviews pre-spill, post-spill, and post-clean-up studies on physicochemical parameters in Bodo Creek. This paper revealed that the difference in the levels of the physicochemical parameters including pH, salinity, dissolved oxygen (DO), biochemical oxygen demand (BOD), and temperature in Bodo Creek, before and after the oil spill was not statistically significant (P > 0.05); other physicochemical parameters examined in this paper are alkalinity, total hardness, chemical oxygen demand (COD) and total dissolved solids (TDS). This paper also revealed that pH and temperature were higher in the post-cleanup study, while DO and conductivity were higher in the pre-cleanup study. BOD was significantly higher in the post-spill study than the pre-spill study, indicating a high level of pollution as a result of the oil spill. This review also shows that there are higher pH and temperature levels in post-clean-up studies than the pre-cleanup studies. Pre-clean-up DO and conductivity were higher than the levels in the post-clean-up study.

scholarly journals Oil Spill Detection Using Satellite Imagery

2021 ◽  
Vol 2 (4) ◽  
pp. 1-1
Author(s):  
Amber Bonnington ◽  
◽  
Meisam Amani ◽  
Hamid Ebrahimy ◽  
◽  
...  
Keyword(s):  
Change Detection ◽  
Oil Spill ◽  
Deep Water ◽  
Oil Spills ◽  
Detection Method ◽  
Oil Spill Detection ◽  
New Development ◽  
Before And After ◽  
The Difference ◽  
Remote Sensing Techniques

<span>Since oil exploration began, oil spills have become a serious problem. When drilling for oil, there is always a risk of an oil spill. With the new development of technology over the years, oil spill detection has become much easier making the clean-up of a spill to happen much faster reducing the risk of a large spread. In this study, remote sensing techniques were used to detect the Deep-water Horizon oil spill through a change detection method. The change detection method allows the viewer to determine the difference of an area before and after an oil spill as well as detect the irregular difference on a surface. To confirm the effectiveness of change detection method, two approaches were used each showing the differences in the images before and after the spill allowing the size and shape to be identified. The swipe tool in the ArcGIS software was used to visually show the changes. The difference tool was also used to both visually and statistically to investigate the difference before and after the Deep-water Horizon oil spill event.</span>

Some Physicochemical Parameters of Wastewater from an Oil Industry at Point of Discharge in Port Harcourt, Rivers State, Nigeria

2020 ◽  
Vol 6 (2) ◽  
pp. 23-28
Author(s):  
O. A. F Wokoma ◽  
◽  
O. S Edori ◽  
Keyword(s):  
Physicochemical Parameters ◽  
Oxygen Demand ◽  
Aquatic Organisms ◽  
Oil Industry ◽  
World Health ◽  
Port Harcourt ◽  
Water Association ◽  
Wastewater Samples ◽  
Health Organization ◽  
Rivers State

Wastewater samples were collected from an oil industry at the point of discharge for a period of two years, from January 2018 – December 2019. The wastewater samples were analyzed for different physicochemical parameters such as temperature, turbidity, total dissolved solids (TDS), total suspended solids (TSS), conductivity, pH, alkalinity, salinity, total hydrocarbon content (THC), biochemical oxygen demand (BOD) and chemical oxygen demand (COD) to examine their conformity to fulfill requirements as recommended by World Health Organization (WHO), Federal Ministry of Environment (FME) and Drinking Water Association (DWA). The results indicated that all the parameters in the discharged wastewater were within acceptable limits of the regulatory bodies. The field data showed that the investigated firm conformed to the law by carrying out proper procedures before discharging the effluents into the public drain and river. Therefore, the release of wastewater from the industry doesn't constitute a danger to the environment as well as aquatic organisms. Keywords: Physicochemical parameter, wastewater discharge, oil industry, environment, contaminants

scholarly journals Sleeve Gastrectomy vs. Fundus Resection in Bariatric Surgery (Animal Study)

2020 ◽  
Vol 21 (6) ◽  
Author(s):  
Alimohammad Bananzadeh ◽  
Seyed Vahid Hosseini ◽  
Hajar Khazraei ◽  
Mohammad Mehdi Lashkarizadeh ◽  
Leila Ghahramani ◽  
...  
Keyword(s):  
Bariatric Surgery ◽  
Weight Loss ◽  
Sleeve Gastrectomy ◽  
Body Weight Loss ◽  
Test Results ◽  
Significant Difference ◽  
Before And After ◽  
Total Ghrelin ◽  
The Difference ◽  
High Level

Background: Bariatric surgery has resulted in body weight loss, which claimed by surgery removal specific parts of the stomach with enzyme or sleeve gastrectomy. Objectives: The aim of this study is to determine weight loss and endocrine changes by 12-week fundus resection and sleeve gastrectomy in rabbits. Methods: Twenty-one rabbits, weighing 2.5 - 3.5 kg, were divided into three groups (n = 7): sleeve gastrectomy, experimental fundus resection, and sham group. The weight of rabbits and total ghrelin and leptin levels in the plasma before and after surgery were measured in 12 weeks. Statistical analyses were performed using the Kruskal-Walis test for comparison of the means between the groups, and the difference after months in one group was assayed by Friedman test. Results: The results showed sleeve gastrectomy had a significant weight loss after one month when compared to fundus resection and sham-operated controls (P = 0.008). There was no significant difference in the ghrelin levels after these surgeries, but leptin levels decreased significantly after the fundectomy (P = 0.025). Conclusions: Sleeve gastrectomy is more efficient than the fundus resection in weight loss. It could be suggested as a new option in metabolic disorders due to the high level of leptin.

scholarly journals Optimization on Emergency Materials Dispatching Considering the Characteristics of Integrated Emergency Response for Large-Scale Marine Oil Spills

2019 ◽  
Vol 7 (7) ◽  
pp. 214 ◽  
Author(s):  
Song Li ◽  
Manel Grifoll ◽  
Miquel Estrada ◽  
Pengjun Zheng ◽  
Hongxiang Feng
Keyword(s):  
Emergency Response ◽  
Oil Spill ◽  
Large Scale ◽  
Oil Spills ◽  
Marine Oil ◽  
Emergency Managers ◽  
Distribution Point ◽  
Dispatching Algorithm ◽  
Marine Oil Spills ◽  
The Difference

Many governments have been strengthening the construction of hardware facilities and equipment to prevent and control marine oil spills. However, in order to deal with large-scale marine oil spills more efficiently, emergency materials dispatching algorithm still needs further optimization. The present study presents a methodology for emergency materials dispatching optimization based on four steps, combined with the construction of Chinese oil spill response capacity. First, the present emergency response procedure for large-scale marine oil spills should be analyzed. Second, in accordance with different grade accidents, the demands of all kinds of emergency materials are replaced by an equivalent volume that can unify the units. Third, constraint conditions of the emergency materials dispatching optimization model should be presented, and the objective function of the model should be postulated with the purpose of minimizing the largest sailing time of all oil spill emergency disposal vessels, and the difference in sailing time among vessels that belong to the same emergency materials collection and distribution point. Finally, the present study applies a toolbox and optimization solver to optimize the emergency materials dispatching problem. A calculation example is presented, highlighting the sensibility of the results at different grades of oil spills. The present research would be helpful for emergency managers in tackling an efficient materials dispatching scheme, while considering the integrated emergency response procedure.

Fecal and Coliform Levels as Indicative Factors in Deterioration of the Water Quality of

2014 ◽  
Vol 10 (1) ◽  
Author(s):  
EUKENE OPORTO BENSIG ◽  
MARY JOYCE L. FLORES ◽  
FLEURDELIZ F. MAGLANGIT
Keyword(s):  
Water Quality ◽  
Surface Waters ◽  
Physicochemical Parameters ◽  
Oxygen Demand ◽  
Aquatic Ecology ◽  
Total Dissolved Solids ◽  
Biological Oxygen Demand ◽  
Indicator Bacteria ◽  
The Difference

The use of surface waters such as rivers for domestic, agricultural andindustrial purposes have made them vulnerable to pollution leading to impairedwater quality. The water quality of Lahug River in Cebu City was evaluated usingcoliforms as indicators, in relation with physicochemical parameters such as biological oxygen demand (BOD), conductivity, dissolved oxygen (DO), nitrate,pH, phosphate, salinity, temperature, total dissolved solids (TDS) and totalsuspended solids (TSS). Sampling was done once a month from November 2011to April 2012 in three stations covering the upstream, midstream and downstream.The multiple tube fermentation technique was used for the analysis of coliforms.The level of these indicator bacteria increased from the upstream towards thelower reaches of the river especially in the months of February to April; however,the difference in values across time was not significant. This implies that therewas a continuous fecal pollution in the river. There were no statistically significantcorrelations between FCs and TCs with the physicochemical parameters. Anegative relationship was observed among FCs and TCs with pH, TSS, DOand nitrate (p>0.05). These results suggest the presence of sewage and organicpollutants in the river.Keywords: Aquatic Ecology, water quality, coliform, physicochemical parameters,experimental design, Philippines

DAMAGE ASSESSMENT IN COASTAL HABITATS: LESSONS LEARNED FROM EXXON VALDEZ

1993 ◽  
Vol 1993 (1) ◽  
pp. 695-697 ◽  
Author(s):  
Thomas A. Dean ◽  
Lyman McDonald ◽  
Michael S. Stekoll ◽  
Richard R. Rosenthal
Keyword(s):  
Optimal Design ◽  
Oil Spill ◽  
Damage Assessment ◽  
Oil Spills ◽  
Lessons Learned ◽  
Exxon Valdez ◽  
Before And After ◽  
And Control ◽  
Alternative Designs ◽  
The Impact

ABSTRACT This paper examines alternative designs for the monitoring and assessment of damages of environmental impacts such as oil spills. The optimal design requires sampling at pairs of impacted (oiled) and control (unoiled) sites both before and after the event. However, this design proved impractical in evaluating impacts of the Exxon Valdez oil spill on nearshore subtidal communities, and may be impractical for future monitoring. An alternative design is discussed in which sampling is conducted at pairs of control and impact sites only after the impact.

scholarly journals One-Point Cellulose Adsorbents for Water Purification

2019 ◽  
Vol 6 (4) ◽  
pp. 01-15
Author(s):  
Yakubu AZEH ◽  
Yohanna Bello Paiko ◽  
Gimba Alfred
Keyword(s):  
Treatment Time ◽  
Fixed Bed ◽  
Oxygen Demand ◽  
Industrial Effluents ◽  
Total Hardness ◽  
Fixed Bed Column ◽  
Physico Chemical ◽  
Before And After ◽  
Biological Contaminants ◽  
Wastewater Quality

The protection of our environment from pollution by various industrial wastewater discharges is of great importance that each Industry treats its effluent to meet acceptable limit/design means to reclaim water from industrial effluents for re-use. The study aimed at reclaiming water from wastewater by assessing the performance of two cellulose adsorbents using the fixed-bed column method to treat pharmaceutical/metal wastewater. The study was carried out by determining the physico-chemical and microbiological parameters of wastewater quality before and after treatment using fixed-bed column. Effluent samples were collected and analyzed according to standard methods. The range of percentage reduction in pollution load with respect to treatment time: 30, 120, 360 and 1440 min was 45-52%, 55-64%, 31-43, 25- 45%, 41- 44%, 55-73%, 48- 51%, 48-54%, 56-71% 13-31%, 45-52%, 47-67% from the metal effluent using nanocellulose adsorbent while 14-24%, 18-23%, 4-10%, 28-46%, 16-20%, 24-42%, 14-32%, 42-57%, 32-52%, 36-47%, 37-56%, 8-53% from the pharmaceutical effluent using oxidized cellulose adsorbent for colour, turbidity, conductivity, total hardness, Nitrite, Phosphate, Ammonia, Biochemical Oxygen Demand, Chemical Oxygen Demand, total solids, total suspended solids and total dissolved solids respectively. Up to 99.9 % was achieved by the adsorbents in the removal of biological contaminants. The study concluded that the celluloses adsorbents showed promising potentials as one-point adsorbent that can be used for water reclamation from wastewater by its ability to remediate both physico-chemical and bacteriological contaminants.

scholarly journals Effect of composition and depth of filter-bed on the efficiency of Sand-intermittent-filter treating the Industrial wastewater at Haridwar, India

2021 ◽  
Vol 13 (1) ◽  
pp. 88-94
Author(s):  
Rakesh Bhutiani ◽  
Faheem Ahamad ◽  
Mukesh Ruhela
Keyword(s):  
Physicochemical Parameters ◽  
Industrial Wastewater ◽  
Industrial Development ◽  
Energy Requirement ◽  
Oxygen Demand ◽  
Cost Effective ◽  
Total Hardness ◽  
Uniformity Coefficient ◽  
Sand And Gravel ◽  
Filter Bed

Sand Intermittent Filtration (SIF) is an established technology of wastewater treatment and in recent years it gains renewed interest due to its simplicity and less energy requirement. The aim of the present study was to evaluate the modified filter-bed Reactor using Sand-intermittent-filtration (SIF) for the removal of physicochemical parameters viz dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), total hardness (TH), calcium hardness (CaH), chloride (Cl), turbidity, total solids (TS), total dissolved solids (TDS), and total suspended solids (TSS) of the Industrial wastewater of State Industrial Development Corporation of Uttarakhand Limited (SIDCUL) at Haridwar. The experiments were performed with the composition of the filter-bed having sand and gravel in the ratio of 1:1 (Reactor I); 1:2 (Reactor II) and 2:1 (Reactor III) at the room temperature 300C. Each Reactor was categorized into A, B and C type based on depth of filter-bed (A=10 cm, B=15 cm, C=30 cm). The maximum removal of TS (52.21%), TDS (50.66%), TSS (57.20%), turbidity (67.36%), chloride (28.81%), BOD (39.18%), COD (38.66%), TH (53.40%), and CaH (62.57%) was observed in Reactor II C (soil and gravel- 2:1 and 30 cm depth of bed) using 0.49 mm effective size and 0.49 uniformity coefficient (UC) of the sand. A mixture of sand and gravel in the Reactor II with a ratio of 2:1 yielded better efficiency in comparison to the Reactor I and Reactor III. Thus, SIF technology could be environment-friendly and economically cost-effective for removing various physicochemical parameters from Industrial wastewater.

scholarly journals Temporal Distribution and Characteristic Analysis of Oil Spill in Balikpapan Bay

2021 ◽  
Vol 925 (1) ◽  
pp. 012063
Author(s):  
D A Widiawan
Keyword(s):  
Oil Spill ◽  
Environmental Problem ◽  
Oil Spills ◽  
Temporal Distribution ◽  
Characteristic Analysis ◽  
Oil Pipeline ◽  
Significant Difference ◽  
Before And After ◽  
Multi Temporal ◽  
Oil Characteristics

Abstract Balikpapan Bay has an oil spill case that attracts many people because it is considered a serious environmental problem and is detrimental to the environment. One of the cases that occurred was the leak of an oil pipeline in Balikpapan Bay due to the wrong anchorage of a ship that occurred on March 31, 2018. Detection of oil spills for three months using Sentinel 1-A satellite data to determine the distribution and analysis of the same oil characteristics from the source of pipe leaks in the Gulf of Balikpapan. The multi-temporal distribution of oil spills in Balikpapan Bay in March, April, and May 2018 has a significant difference in the upstream and mouth of the bay due to a pipe leak on March 31, 2018. Characteristics of upstream oil spills represented by stations 4 and 5 have the anisotropy value is lower than at the mouth of the bay which is represented by stations 1 and 2. The characteristics of the oil spill in Balikpapan Bay have differences before and after the oil spill due to pipe leakage as indicated by the decrease in the anisotropy value.

scholarly journals Impact of Industrial Effluent Discharge on the Physico-chemical Properties of Aleto Stream, Eleme, Rivers State, Nigeria

2020 ◽  
pp. 79-89
Author(s):  
S. L. Gbarakoro ◽  
T. N. Gbarakoro ◽  
W. L. Eebu
Keyword(s):  
Electrical Conductivity ◽  
Industrial Effluent ◽  
Chemical Properties ◽  
Oxygen Demand ◽  
Total Hardness ◽  
Permissible Limits ◽  
Physico Chemical ◽  
Effluent Discharge ◽  
Rivers State ◽  
The Impact

Aim: This research work aimed to determine the impact of industrial effluent discharge on the physicochemical properties of Aleto Stream, Eleme and Rivers State. Study Design: Random sampling technique was applied in this study. The study area was divided into three sites; upstream, downstream all of Aleto Stream and Agbonchia Stream which serves for the control experiment. Water samples for eleven physical and six chemical parameters were collected in a Completely Randomized Design. Place and Duration of Study: This study was carried out on Aleto and Agbonchia streams at Eleme, Rivers State, Nigeria from 2017 to 2018. Methodology: Two samples were collected; one sample at the Aleto stream where the industrial effluent is being channelled into the stream and the other sample was collected from Agbonchia stream, which was used as a control. In the Aleto Stream, sampling was made at two points; point A (upstream) point B (downstream) and each of these points had their Physico-chemical properties tested while only one sample was collected from the Agbonchia Stream. Physico-chemical properties were analyzed in the samples using pH meter for pH, Turbidity meter for turbidity, Conductivity meter for electrical conductivity, phosphate by colourimetric method, total dissolved solids (TDS) and total suspended solids (TSS) by gravimetric method, biochemical oxygen demand (BOD) and chemical oxygen demand (COD) by standard method, chloride, alkalinity, dissolved oxygen (DO), calcium hardness, total hardness by titrimetric method, colour, odour and taste by sensory method. Results: Results obtained on the Physico-chemical properties had varying concentrations of Temperature, Total hardness, Chloride, Alkalinity, DO and Phosphate that were within world health organization (24)  and Federal Ministry of Environment (1991) permissible limits on both upstream and downstream with values ranging from 29.0-23.7oC, 360-125 mg/l, 120-100 mg/l, 36-30 mg/l, 4.9-4.4 mg/l, 1.92-1.2 mg/l respectively while Electrical conductivity, Turbidity, TSS, TDS, Calcium hardness, COD, BOD, Colour, Taste and Odour were above permissible limits on both upstream and downstream with values ranging from 1660-1700 mg/l, 83-112NTU, 82-80 mg/l, 910-914 mg/l, 1590-1900 mg/l, 100-165 mg/l, 4.36-3.88 mg/l respectively. The pH values ranged from 9.0-6.3 mg/l showing a result on the upstream to be alkaline while the downstream was slightly acidic. The increase in the above parameters above their permissible limits is as a result of the impact of industrial effluent discharges drained into the stream. This indicates that the stream is unfit for both human and aquatic inmates. Conclusion: Therefore, proper management of this effluent should be ensured and an acute test with lethal concentration (LC50) as the endpoint is recommended to determine the degree of toxicity of the effluent waste.

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