Research Papers/Topics in Environmental Chemistry

Evaluation Of Chlorpyrifos Ethyl Elisa Kit And Assessment Of Use And Spatial Distribution And Temporal Trend Of Selected Organophosphate And Carbamate Pesticides Residues In Water, Sediment A

ABSTRACT Heavy seasonal use of specific organophosphate and carbamate in the catchment area of Lake Naivasha is a potential cause of pollution of sediment, water and fish in the lake. However, there is lack of data on the potential pollutants, their levels in the aquatic ecosystem and monitoring strategy. The objectives of this study were to identify the commonly used pesticides and the timing of their application in Lake Naivasha catchment area through a survey; to evaluate the per...

Survey Of Levels Of Some Heavy Metals In Soil, Sugarcane And Some Sugarcane Products From Muhoroni And South Nyanza Sugar Companies Nucleus Estates, Kenya.

ABSTRACTSugarcane is an important cash crop in Kenya. Due to its economic value, efforts are in progress to increase its production. The efforts include intense use of fertilizers, besides the use of high-yielding varieties. The intense use of fertilizers adds heavy metals to the sugarcane growing soils. The sugarcane plants can bioaccumulate heavy metals from soils to levels above safe limits. Metal levels in soil and factors such as soil pH and soil organic matter (SOM) influence levels of ...

Assessment of Atmospheric Particulates in Port Harcourt And Omuku Towns in Rivers State, Nigeria

ABSTRACT Port Harcourt and Omoku are two densely populated towns in Rivers State. This may not be unconnected with the presence of such attractive features as tertiary institutions, oil and gas companies, very large daily markets, free electric power supply (as in Omoku) among others. In the light of the above, it is expected that industrial effluents, domestic waste discharge, automobile emissions, gas flaring etc generate atmospheric aerosols which dissolve to form particulates as po...

Phytochemical And Nutritional Evaluation of Cucurbita maxima And Citrullus lanatus in Wistar Rats

ABSTRACT      Fruits and vegetables are eaten world over and serve as nutrient supplements. This study compared the nutritional and phytochemical contents of the pulp of C. lanatus dried at 45°C and C. maxima dried at 45°C and 100°C and their effect on the biochemical, haematological, histopathological and growth performance parameters of Wistar rats after feeding with 5% and 10% ratios. The results showed that proximate composition of C. lanatus and most espec...

Design and construction of bio-gas for household use

ABSTRACT: The designed air driven engine is an economic friendly engine which operates with the aid of a compressed air. in principle, an air driven engine uses the expansion of compressed air to drive the pistons of an engine. an bio gas driven engine is a pneumatic actuator that creates useful work by expanding compressed gas. there is no mixing of fuel with gas as there is no combustion. An gas driven engine makes use of compressed gas technology for its operation the compressed a...

Heat Activated Persulfate Oxidation of Dye Solutions

ABSTRACTThis study investigates the decolourization of reactive blue 4 textile dye solution by heat activated persulfate. Synthetic textile dyes have been found to be non-biodegradable, toxic and carcinogenic and thus potentially harmful to both the environment and living organisms when improperly discharged to the environment. A lot of attention have been given to Azo dyes which make up approximately 60% of the reactive dyes with limited study conducted on other classes of reactive dyes such...

An Assessment of Pollution and Effects on Human, Animals, Plants and The Environment in Nigeria (Lagos State)

ABSTRACTPollution is the introduction of waste into the atmosphere making it impossible to make life onearth possible to sustain. Pollution is the introduction of a contaminant into the environment. Alot of anthropocentric activities have contributed to the gradual degradation of the ecosystem.However, they  are measures   that  can bring   sanity   and  recovery the wounded ecosystem. Incourse   of   this   study,&nbs...

Compound Parabolic Concentrators for Solar Water Heat Pasteurization: Numerical Simulation

Many people in less developed countries drink water with microbial contamination, which leads to the annual death of 5 million children. Although some people currently boil water, all microbes that cause disease in humans do not survive at temperatures >65oC, which solar water pasteurizers can easily produce. These pasteurizers are similar to box solar cookers, and typically have a small rectangular reflector. The objective of this work is to calculate the increase in output due to compound p...

Viability of Small-Scale Arsenic-Contaminated Water Purification Technologies for Sustainable Development in Pakistan

Drinking arsenic-contaminated water leads to a series of health problems that has limited development for the largely poor rural people of Pakistan who are unable to afford bottled water, centralized treatment plants, or expensive water filter systems. This paper reviews the available appropriate technologies for the removal of arsenic in drinking water to assist in just sustainable development in Pakistan. Several technologies were found to be both technically- and economically- viable and s...

Environmental Impacts of Distributed Manufacturing from 3-D Printing of Polymer Components and Products

Although additive layer manufacturing is well established for rapid prototyping the low throughput and historic costs have prevented mass-scale adoption. The recent development of the RepRap, an open source self-replicating rapid prototyper, has made low-cost 3-D printers readily available to the public at reasonable prices (

Open-Source Photometric System for Enzymatic Nitrate Quantification

Nitrate, the most oxidized form of nitrogen, is regulated to protect people and animals from harmful levels as there is a large over abundance due to anthropogenic factors. Widespread field testing for nitrate could begin to address the nitrate pollution problem, however, the Cadmium Reduction Method, the leading certified method to detect and quantify nitrate, demands the use of a toxic heavy metal. An alternative, the recently proposed Environmental Protection Agency Nitrate Reductase Nitra...

Solar photovoltaic powered on-site ammonia production for nitrogen fertilization

Ammonia synthesis is the most important step for nitrogen-fertilizer production and consumes approximately 1% of the world’s energy production and energy-related greenhouse gas emissions. In addition to the concomitant emissions caused by ammonia and nitrogen fertilizer synthesis, centrally produced fertilizer that must be distributed to farms also harms the environment because of the embodied energy of transportation. An environmentally-optimal nitrogen fertilizer system would be distribut...

Energy Payback Time of a Solar Photovoltaic Powered Waste Plastic Recyclebot System

The growth of both plastic consumption and prosumer 3-D printing are driving an interest in producing 3-D printer filaments from waste plastic. This study quantifies the embodied energy of a vertical DC solar photovoltaic (PV) powered recyclebot based on life cycle energy analysis and compares it to horizontal AC recyclebots, conventional recycling, and the production of a virgin 3-D printer filament. The energy payback time (EPBT) is calculated using the embodied energy of the materials maki...

DETERMINATION OF ARSENIC, ANTIMONY, SELENIUM AND PHYSIOCHEMICAL PARAMETERS IN GROUNDWATER WITHIN IBADAN METROPOLIS

DETERMINATION OF ARSENIC, ANTIMONY, SELENIUM AND PHYSIOCHEMICAL PARAMETERS IN GROUNDWATER WITHIN IBADAN METROPOLISONI TAIWO OLIWAFUNMILAYOTABLE OF CONTENTSABSTRACTCHAPTER ONEINTRODUCTIONGround Water Quality Assessment   11.1.1 Significance of Water Quality Assessment 11.2 Groundwater Pollution         21.2.1 Sources of Water Pollution 51.3 Effects of Water Pollution         91.4 Sources of Arsenic, Selenium, Antimony in Groundwater  ...

Evaluation of polycyclic Aromatic Hydrocarbons and Selected Heavy Metals Levels in Water around Zaakpon, Rivers State

                      AbstractPolycyclic aromatic hydrocarbons, heavy metals and physiochemical parameters were measured in water samples from zaakpon community. The results shows that most of the parameters in water were within safe limits except turbidity, potassium and Phosphate while PAHs concentrations in water were below detection limit


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