CHAPTER ONE
INTRODUCTION
1.0 INTRODUCTION
Atmospheric emission of methane (CH4) associated with animal waste are worldwide problem and may contribute to a detrimental impact on the environment.
CH4 are important green house gases that are produced anthropogenic ally but mainly by plant, animal waste and from natural geothermal source. Other green house gases include CO2, NH3.
‘Greenhouse’ gases are gases that have a molecular structure such that they obstruct the radiation of heat from the earth, thus acting like the glass or membrane over a greenhouse.

The gases that are most effective at absorbing this radiated heat are carbon dioxide, methane, nitrous oxide, hydro fluorocarbons and sculpture hexafluoride.
The above ‘greenhouse’ gases have differing abilities to absorb the heat radiated from the earth and are assigned factors (their ‘global warning potential’) based on their absorbing ability relative to that of carbon dioxide.

The factors depend on the lifetime over which the effect of the gases is assessed.

A gas which is quickly removed from the atmosphere may initially have a large effect but over a longer period the effect will be much less important.
1.1 BACKGROUND OF STUDY
Waste products are valuable resources as fertilizer and suitable to be applied to crops and pastures.

However When concentrated into relatively small geographical area or applied in excessive amounts, waste can have detrimental environmental effects.

This can results in enhanced CO2, CH4 and NS0 emission to the atmosphere influencing global warming and destruction of the ozone layer (mosier, 1998). These gases have long atmospheric lifetimes, are consequently fairly well mixed and therefore of global as well as local or regional importance.

They represent a most serious threat to global climate in terms of greenhouse effect and their overall radioactive forcing from pre industrial time to date were estimated as 1.85,0.15 and 0.1.2Wm-2 respectively.

Anthropogenic sources account for 70% of the total annual release of CH4, 16% of which coming from production of waste (IPCC, 1994). Soil microbial processes accesses account for 65% of the total N2) source strength (5 to 5 TG year-1).

These researches measured the emission of NH3 using ToxiRAE pro and modeling to estimate emission by Gabi 6 tools.
1.2 STATEMENT OF THE PROBLEM
Scientist agree that even a small increase in the global temperature would led to significant climate and whether changes, affecting cloud cover, precipitation, wind patterns, the frequency and severity of storms, and the duration of season.
I. Rising temperature would raise sea levels as well, reducing supplies if fresh wash water as flooding occurs along coastlines world and salt water reaches inland.
II. Many of the world endangered species would become extinct as raise in temperature would change their habitat.
III. Millions of people also will be affected especially poor people who live in precarious locations or depend on land for sustenance living.
IV. Certain vector bam diseases carried by animals or insects such as malaria would become wide spread as warmer conditions expand their range.
1.3 AIMS AND OBJECTIVES:
1.3.1 AIM
The aim of the project is to model trace gas pollution from Ilorin animal waste dumpsite.

1.3.2 OBJECTIVES:
i. Pollution locator (animal waste)
ii. To quantity emission rate of trace gases from animal waste dump site in Ilorin
iii. To understand better trace gases emission level from pollution and its effect on global warning
iv. To model trace gas pollution from Ilorin animal waste dumpsite