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Physico-chemical Investigation On Dumpsite Leachate
[A CASE STUDY OF ILORIN METROPOLIS] -
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3.3 Sample collection
• The samples were collected using plain bottles.
• They were divided into two, drops of nitric acid were added to part of the divided samples to avoid adsorption of the metals to the container wall.
• The samples were transported to the laboratory with cooler and ice pack so as to maintain the temperature of the samples and also to avoid loss of nitric acid by heat.
3.4 Raw Leachate analysis
3.4.1 Determination of COD
Reagent:
- COD standard solution
- COD digestion reagents
- Potassium Acid phthalate
- Sulphuric acid
- Mercuric acid
- Ultra-pure water
PROCEDURE:
1. 50ml of sample was homogenies for 2 minutes in a blender 0 to 15,000 mg/l. The homogenized sample was into a 100ml beaker and it was stirred with a magnetic stirrer.
2. The COD reactor was turned on and it was preheat to 1500c. The plastic shield was placed in front of the reactor.
Caution: ensure Safety devices are in place to protect analyst from splattering should reagent leaking occur.
3. The cap of a COD digestion reagent vial was removed for the appropriate range.
4. The vial was held at angle 450. 2.00ml (0.2 ml for the 0 to 15,000 mg/l) of sample was pipetted into the vial.
5. The vial cap was replaced slightly. The COD vial was rinsed with ultrapure water and the vial was wiped and cleaned with a paper towel.
6. The vial was held by the cap and over a sink. It was inverted gently several times to mix the contents. The vial was placed in the preheated COD reactor.
7. The blank was prepared by repeating steps 3 to 6 substituting 2.00ml (0.2ml for the 0 to 15,000mg/l range) ultra-pure water for the sample
8. The vials was heated for 2 hours
9. The reactor was off. The vial was waited to cool to 1200c at about 20 minutes.
10. Each vial was inverted several times while still warm. The vials was placed into a rack and waited until the vials have cooled to room temperature.
3.4.2 Determination of BOD
Reagents
1. Phosphate buffer solution (1ml each)
2. Magnesium sulphate sodium
3. Calcium chloride solution
4. Ferric chloride solution
5. H2SO4
6. NaOH
7. Sodium sulphite solution
8. Nitrification inhibitor (2-chloro-6-(trichloro methyl) pyridine
9. Glucose glutamic acid solution
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ABSRACT - [ Total Page(s): 1 ]ABSTRACT COMING SOON ... Continue reading---
CHAPTER ONE - [ Total Page(s): 3 ]6 Significance of the study This study is important because it serves as a medium through which numerous problems associated with the waste dumpsite can be address. This is also necessary because it is hoped that through its outcome, the magnitude of the environmental contamination in the study area will be highlighted. The outcome of the study may also give the government to appreciate waste management strategies and controls measures over indiscriminate dumping of waste. Furtherm ... Continue reading---
CHAPTER TWO - [ Total Page(s): 11 ]Usually, the main reason for the presence of heavy metals in landfill leachate is the lack of awareness among the people. A lot of hazardous waste such as clinical bandages, batteries and medicine are found in the refuse sent to landfills (Hamidi et al., 2003). Also, heavy metals such as iron, manganese, zinc, chromium, lead, copper and cadmium are present in high concentrations in the landfill leachate. These minerals can cause pollution to groundwater, surface water and reservoirs (Aziz et al. ... Continue reading---
CHAPTER FOUR - [ Total Page(s): 4 ]Superscripts a, b and c show that the values are significantly different while all the values bearing the same letter shows there no significant difference. The pH for Okefomo was 7.63 ± 0.16, Sawmill was 8.71 ± 0.15 and Irewolede was 7.79 ± 0.33 respectively. When pH of the three locations were compared, Okefomo and Irewolede were not significantly different while Sawmill was found to be different from both Okefomo and Irewolede (p ... Continue reading---
CHAPTER FIVE - [ Total Page(s): 2 ]CHAPTER FIVE5.0 DISCUSSION, CONCLUSION AND RECOMMENDATIONS5.1 Discussion of FindingsThe thrust of the study was on the physico-chemical component on dump leachate sample in Ilorin metropolis at the level of impact on the ambient environment. The findings revealed that turbidity, pH and temperature of leachate in study area show significant value. This means that the values of pH and temperature of leachate in study area are such that can exalt negative influence on people. With respect to ... Continue reading---
REFRENCES - [ Total Page(s): 5 ]REFERENCES:Abanades S., Flamant G. and Gauthier D.,(2001). Modeling of heavy metal vaporization from a mineral matrix, J. of Hazardous Materials, 88(1):75-94. Abdus-Salam, N. and Adekola, F. A. (2005). Physico- chemical characterization of some Nigeriangoethite mineral samples. Ife J. Sci. 7(1), 131 – 137. Abdus-Salam, N. and Adekola, F. A. (2005). The influence of pH and adsorbent concentration on adsorption of lead and zinc on a natural goethite. African J ... Continue reading---
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ABSRACT - [ Total Page(s): 1 ]ABSTRACT COMING SOON ... Continue reading---