The Experts below are selected from a list of 66 Experts worldwide ranked by ideXlab platform
Vincent Nduka Ojeh - One of the best experts on this subject based on the ideXlab platform.
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Effect of Gas Flaring on Soil and Cassava Productivity in Ebedei, Ukwuani Local Government Area, Delta State, Nigeria
Journal of Environmental Protection, 2013Co-Authors: Morrison Ifeanyi Atuma, Vincent Nduka OjehAbstract:The threat to human, fauna and flora life posed by pollution due to gas flaring cannot be over-emphasized. Gas flared often resulted in some environmental degradation, one of such influence is soil pollution and poor crop yield. This study examined the effect of gas flaring on soil and cassava productivity in Ebedei, Ukwuani LGA, Delta State. For the purpose of data collection, five (5) experimental sites were systematically selected around the flare site in Ebedei and a control site at Obiaruku. Soil samples were collected at surface 0 - 10 cm and 10 - 20 cm at distance of 50 m, 100 m, 150 m, 200 m and 250 m apart respectively away from the Bund Wall of the flare. The data generated were analysed using multiple regression and paired t-test analyses. The study revealed that the soils found in Ebedei have high composition of sand and soil temperature and are acidic. The soil electrical conductivity, Phosphorous, Nitrogen, Potassium and Sodium were very low. More so, the yield of cassava increases with a corresponding increase in distances from flare site. The first hypothesis revealed that there is significant variation in soil nutrients as distance increases from gas flare sites. This is evident from F value of 234.99 which is greater than the critical table value of 4.39. Furthermore, as flare distance increases, so also the organic carbon, electrical conductivity and Nitrogen increase. The second hypothesis revealed that there is a significant difference in cassava yield at gas-flared area and the non-flared area which is evident at t (6.032) is greater than the critical table (1.895) at P 0.05. It is therefore recommended that Government and FEPA should enact environmental Policies and revisit and review existing environmental and oil drilling laws in Nigeria with a view of updating them to international and environmental friendly standards.
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Sustainable Development and Gas Flaring Activities: a Case Study of Ebedei Area of Ukwuani LGA, Delta State, Nigeria
Resources and Environment, 2012Co-Authors: Vincent Nduka OjehAbstract:The impact of gas flaring on the sustainable development was examined. The presence crude oil and natural gas is expected to serve as socio-economic driver of accelerated sustainable development of an area but the situation of oil producing areas of Nigeria is a far cry from the expected. Data was collected from eight (8) experimental sites around the gas flaring station including Obiaruku (control site), which has no gas-flaring station. Temperature and concentrations of air quality indices were determined. The temperature and air quality measurements in Ebedei were made, at least, 50 meters away from the Bund Wall of the flare. The data were analysed using the Multiple Regression and bivariate correlation. Results revealed that there is a significant relationship between ambient temperature and the gases (CO, NO2, SO4 and CH4) flared in Ebedei at F value of 20.069 which is greater than the critical value of 9.12. An increase in flared gases results to a corre- sponding increase in temperature. Strong negative relationship exists between distance from the Bund Wall of the flare and temperature at r=0.855. Recommendations: (FEPA) should constantly monitor and evaluate the level of damages done by gas flaring to ensure compliance and sustainability of the environment.
Tian Shao-wei - One of the best experts on this subject based on the ideXlab platform.
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Safety Analysis of LNG Storage Tank
Petro-chemical Equipment, 2020Co-Authors: Tian Shao-weiAbstract:At the development stage,LNG safe storage is very important.Based on the characteristics of LNG,various technical requirements of LNG for the safe storage was analyzed,such as Bund Wall,design pressure,material etc.Some suggestions for constructing of the single containment metal tank were given.
Zhao Zhoume - One of the best experts on this subject based on the ideXlab platform.
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Discussion on Design of Bund Wall in LNG Tank Farm
2020Co-Authors: Zhao ZhoumeAbstract:The determination of effective volume and shape in design of Bund Wall in LNG tank farm as well as selection and proportion of concrete material are discussed with an engineering example. Suggestions for improving resistance of the Bund Wall to low temperature and high temperature are proposed.
W. Hicks - One of the best experts on this subject based on the ideXlab platform.
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Contemporary and relict processes in a coastal acid sulfate soil sequence: macroscopic and geomorphic features
2020Co-Authors: B. P. Thomas, Rob Fitzpatrick, R. H. Merry, W. Hicks, Mark D. Raven, Glen OsmondAbstract:Two 4D mechanistic process models were developed to explain the evolution of soil-landscapes in two adjacent and contrasting coastal regions in Barker Inlet, South Australia containing sulfidic materials and sulfuric horizons. Pedological (morphology), geomorphic, micromorphological, mineralogical (XRD), electron microscopic (SEM and TEM) and geochemical (XRF, ICP, automated redox monitoring) investigations were conducted on soil-sequences in the following two adjacent study sites: • tidal mangrove soils with sulfidic material (Histic-Sulfidic Intertidal Hydrosols). Recent changes in tidal regime has contributed to a marked increase in supply of nutrients and organic matter causing strongly reducing conditions to develop, which has lead to mangrove deaths; and • a similar tidal region where seawater was excluded in 1954 when a Bund Wall was constructed for industrial and agricultural land reclamation. Loss of tidal inundation has caused the formation of sulfuric horizons overlying sulfidic material leading to degraded soils (Sulfuric Hypersalic Hydrosols) and waters in the drained area. The 4D mechanistic models were developed to illustrate the major geomorphic stages in soil-landscape evolution at different spatial scales. Superimposed on this framework are detailed chemical and physical changes that occur when tidal influences are altered or excluded in these environments. The models also pinpoint how and where acidity and contaminants such as heavy metals and oxyhydroxysulfates are produced in soil layers, their movement and spatial distribution in these settings. This information provides a better understanding of soil-landscape processes to underpin future management of these systems.
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MANAGING COASTAL ACID SULFATE SOILS: THE EAST TRINITY EXAMPLE
2020Co-Authors: W. Hicks, Rob Fitzpatrick, Greg BowmanAbstract:Between 1971 and 1975, a tropical estuarine wetland of some 700 ha at East Trinity, Cairns, north Queensland, was drained by construction of a Bund Wall and floodgates for the production of sugar cane (Figure 1). Crop yields were below expectation and problems were thought to be drainage and salt removal. Maximum planting of sugar cane occurred in 1981 and planting ceased in 1998. The land was sold for further development in the late 1980s and was eventually held by receivers until purchased by the Queensland government in 2000. Following the abandonment of much of the area for sugar cane production there was strong local debate on land use options through the 1980s and 1990s. There were a number of community and political divides, options ranged from full urban development to uncontrolled reflooding. The CSIRO has a long history of involvement with East Trinity, with research into both production and environmental issues. The Division of Environmental Mechanics initially investigated production problems in 1976. This study concentrated on drainage and salt removal and it was several years before acid sulfate soils (ASS) were identified. The Division of Soils and the Queensland Department of Primary Industries mapped the area including the acid sulfate soils during their joint Wet Coast soil survey. From 1995 to 1998, the area was a coastal ASS reference site as part of CSIRO’s Coastal Zone Project. Following the 1995-1998 CSIRO study that confirmed the environmental hazard posed by the ASS on the site (Hicks et al. 1999), a workshop was held in Cairns to present the findings. This further fuelled the debate. The issue was resolved in 2000 when the Queensland government purchasing the land from the receivers and commenced the East Trinity Property Remediation and Management Project, including an “Acid Sulfate Soil Remediation Action Plan”. In 2001, the Natural Heritage Trust funded a consortium to demonstrate the management and rehabilitation of the ASS (2001 to 2003). The CSIRO was part of the consortium investigating aspects of site remediation. CSIRO’s role in this project was to develop the monitoring and evaluation framework and investigate the effect of reflooding on the soil chemistry and sediment, pore water interactions (Hicks & Fitzpatrick 2003). Site remediation works are ongoing.
Morrison Ifeanyi Atuma - One of the best experts on this subject based on the ideXlab platform.
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Effect of Gas Flaring on Soil and Cassava Productivity in Ebedei, Ukwuani Local Government Area, Delta State, Nigeria
Journal of Environmental Protection, 2013Co-Authors: Morrison Ifeanyi Atuma, Vincent Nduka OjehAbstract:The threat to human, fauna and flora life posed by pollution due to gas flaring cannot be over-emphasized. Gas flared often resulted in some environmental degradation, one of such influence is soil pollution and poor crop yield. This study examined the effect of gas flaring on soil and cassava productivity in Ebedei, Ukwuani LGA, Delta State. For the purpose of data collection, five (5) experimental sites were systematically selected around the flare site in Ebedei and a control site at Obiaruku. Soil samples were collected at surface 0 - 10 cm and 10 - 20 cm at distance of 50 m, 100 m, 150 m, 200 m and 250 m apart respectively away from the Bund Wall of the flare. The data generated were analysed using multiple regression and paired t-test analyses. The study revealed that the soils found in Ebedei have high composition of sand and soil temperature and are acidic. The soil electrical conductivity, Phosphorous, Nitrogen, Potassium and Sodium were very low. More so, the yield of cassava increases with a corresponding increase in distances from flare site. The first hypothesis revealed that there is significant variation in soil nutrients as distance increases from gas flare sites. This is evident from F value of 234.99 which is greater than the critical table value of 4.39. Furthermore, as flare distance increases, so also the organic carbon, electrical conductivity and Nitrogen increase. The second hypothesis revealed that there is a significant difference in cassava yield at gas-flared area and the non-flared area which is evident at t (6.032) is greater than the critical table (1.895) at P 0.05. It is therefore recommended that Government and FEPA should enact environmental Policies and revisit and review existing environmental and oil drilling laws in Nigeria with a view of updating them to international and environmental friendly standards.