Indexing

Abstract: This study aim to evaluate the remediation of Physicochemical Properties of Soils Affected by Fuel Spills in Port Harcourt Environment. Four samples from four locations within Port Harcourt environment were investigated for four months. The findings show an increase in SEM values of Temperature (30.25±0.25^oC), Electrical conductivity (0.97±0.11uS/cm), Sulphate (18.73±1.92mg/kg), Total Organic Carbon (0.15±0.001%), Total organic matter (0.26±0.01%), Total hydrocarbon content (47.08±6.71mg/kg) and a decrease in pH (7.60±0.10) in diesel contaminated soils when compared with the SEM values of control. Alternately, the concentration of phosphate and nitrate in both diesel and spent oil contaminated soils reduced when compared with the control indicating a short fall in dissolved nutrients due to microbial activities. Positive remediation was seen in all the treatments used. However, a remediation mixture of 10% Sodium nitrate and 1% Potassium phosphate (10% NaNO₃ + 1% K₃PO₄₎ remediated better and faster than when 10% Ammonium nitrate and 1% Potassium phosphate (10% NH₄NO₃ + 1% K₃PO₄) was used, and was more economical. Thus, establishing the fact that these chemicals can serve as a good option in any remediation process of the soil.

Keywords: Physicochemical, Remediation, Fuel spill, Soils, Environment.

Title: EVALUATION OF REMEDIATION TECHNIQUES OF SOILS AFFECTED BY FUEL SPILLS IN PORT HARCOURT ENVIRONMENT

Author: John, Godson Nnamdi, Onwugbuta, Godpower Chukwuemeka, Oriji, Onuoha., Sam, Edikan Michael.

ISSN 2350-1030

International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)

Paper Publications

Abstract: Evaluation of heavy metals in the environment is important for ensuring human and environmental health. Legislation sets limits on the maximum allowable concentrations of trace metals in the air, water, and food. The aim of this work is to evaluate the level of some heavy metals present in underground water within crude oil polluted site.Water samples were collected from Kegbara-Dere community in Gokana Local Government, they were analysed using the flame Atomic Absorption spectrophotometer method. The pH and total petroleum hydrocarbon were also determined. Result obtained showed Nickel in the polluted site varied from 0.073 – 1.39ppm, whereas in the unpolluted area, the value was 0.016ppm. Copper varied from 3.92 – 9.14ppm in the polluted site and had a value of 1.83ppm in the unpolluted site. Lead varied from 0.35 – 1.39ppm in polluted area and had a value of 0.003ppm in the unpolluted site. The amount of Zinc in the polluted area varied from 4.29 – 9.50ppm and had a value of 5.0ppm in the unpolluted area. The amount of heavy metals in the polluted and unpolluted area exceeded the recommended WHO stipulated limit of 0.001ppm for Lead and Nickel, though the unpolluted site had lesser concentration. The amount of Copper also exceeded 1.3ppm which is the recommended amount by EPA. This could be attributed to the heavy metals present in crude oil finding its way into ground water from crude oil pollution (polluted site)and high level of industrialization in the unpolluted site. Water samples should be properly treated to the WHO standard before consumption to ensure that the population is consuming a healthy portable drinking water.

Keywords: Heavy Metals, Evaluation, Crude Oil, Water, Polluted.

Title: EVALUATION OF THE LEVEL OF HEAVY METALS IN UNDERGROUND WATER FROM CRUDE OIL POLLUTED AREA

Author: Fajoyomi Bridget Uredo-ojo, Michael Joy Ileti, Daodu Bamidele T

ISSN 2350-1030

International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)

Paper Publications

Abstract: A descriptive survey research design and a mixed method research paradigm was employed in this study. Quantitative data collected was analyzed using both descriptive and inferential statistics based on the objectives of the study. The study found the following threshold concepts: Also imposing linear structure, not dividing the equation by coefficient of , not adding half the coefficient of x and being unable to convert the solution to squared form. Considering these concepts, teachers should emphasize these threshold concept during teaching.

Keywords: Comprehension, Performance, Threshold Concepts and Quadratic Equations.

Title: THRESHOLD CONCEPTS IN SOLVING QUADRATIC EQUATIONS USING FACTORIZATION METHOD

Author: G. K., Tonui, K. Ongeti, L. Ayiro

ISSN 2350-1030

International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)

Paper Publications

Abstract: Mathematics is the cornerstone of development of any contemporary society since attaining self-reliance requires creative and problem solving individuals who can identify opportunities in their environment. However, a study on learner’s difficulties in solving quadratic equations would provide a useful framework for improving teaching and learning in secondary school education. The study aimed to establish those difficulties learners’ faces. Vygotzy theory of concept formation guided the study. The study was conducted in Kericho County, Kenya with 384 learners participating in the study. A descriptive survey research design was employed. Learner’s diagnostic test instrument containing quadratic equations was designed based on Bloom’s cognitive domains of learning was administered. Quantitative data collected was analyzed using both descriptive and inferential statistics based on the objectives of the study. The study found the following difficulties: learners confused intercepts and coordinates, finding equation of a line, wrong table values, did not know what roots of a function means, incorrect graph, gave coordinates and using roots to find equation. Considering these difficulties, teachers should put a lot of emphasize on them during teaching.

Keywords: Difficulties, Solving Word and Graphical Problems and Quadratic Equations.

Title: LEARNER DIFFICULTIES IN SOLVING WORD AND GRAPHICAL PROBLEMS IN QUADRATIC EQUATIONS

Author: G. K., Tonui, L. Ayiro, K. Ongeti

ISSN 2350-1030

International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)

Paper Publications

Abstract: According to recent studies, the global energy demand could grow by approximately 50% in the next 25 years [1]. Currently, more than 80% of the world’s energy is produced by burning fossil fuels such as oil, coal, and natural gas. These fuels produce greenhouse gases that are harmful to the environment. Moreover, the energy produced by these sources becomes expensive because of the exhaustion and, thus, the scarcity of these. Solar energy, abundant and non-polluting, can serve as an alternative to these sources and produce a significant contribution to global energy demand.

Renewable energies are an essential asset to solve ecological problems and satisfy the energy needs in constant increase. Among the various renewable energy sources in progress, solar photovoltaic energy, considered clean and inexhaustible, is one of the most promising as the energy of the future to replace other sources of fossil and nuclear energy.

Keywords: fossil energy, greenhouse gases, a global energy, photovoltaic energy, renewable energy.

Title: Short review about the development of organic photovoltaic cells

Author: Abousaad Oumaima

ISSN 2350-1030

International Journal of Recent Research in Physics and Chemical Sciences (IJRRPCS)

Paper Publications