ABSTRACT
Microbial and Physicochemical quality of soil receiving cassava effluent in Umudike, Abia state was studied. Soils from five different contaminated areas and pristine soils were analysed using standard microbiological methods. The mean bacterial count of contaminated soil ranged from 3.77±4.51cfu/g to 5.77±6.11cfu/g while that of the pristine soil ranged from 6.10±4.36cfu/g to 8.77±4.51cfu/g. The mean fungal count of contaminated soil ranged from 6.67±1.16cfu/g to 11.00±1.00cfu/g while the pristine soils range from 11.00±1.00cfu/g to 17.33±1.16cfu/g. It showed that the pristine soils of both the fungal and bacterial count were high compared to the contaminated soil. Results of microbial flora shows six fungal genera in the soils which are Aspergillus species, Penicillium, Rhizopus species, Mucor, Yeast, Fusarium and nine bacterial genera in the soils which includes Klebsiella species, Staphylococcus species, Proteus, Bacillus species, Escherichia coli, Streptococcus species, Enterobacter, Micrococuus species and Pseudomonas. The percentage occurrence of bacterial isolates had the highest for Proteus and Bacillus (100%) and the lowest were Escherichia coli, Enterobacter and Streptococcus which had (20%). The highest percentage occurrence of fungal isolates was Aspergillus, Yeast and Penicillium (100%) and had the lowest for Fusarium and Mucor (20%). Physicochemical analyses were carried out: Cyanide content was 125.16±4.46, Organic calcium 1.14±0.01, Organic matter 2.53±0.12, pH 6.67±0.58, Sodium 3.13±0.46, Potassium 1.73±0.12, Phosphorus 55.7±5.32. The effect of cassava waste water on soil microorganisms was adverse. The waste water contains toxic hydrocyanic acid which inhibits the activity of microorganisms to a large extent. It was observed that there is a possibility of using this cassava waste water tolerant species for bioremediation of such contaminated soils.
Table of Contents
TITLE PAGE i
CERTIFICATION ii
DEDICATION iii
ACKNOWLEDGEMENT iv
TABLE OF CONTENTS v
LIST OF TABLES ix
LIST OF FIGURES x
ABSTRACT xi
CHAPTER ONE
1.0 INTRODUCTION 1
1.1 Aim of study 2
1.2 Objectives of the study 2
CHAPTER TWO
2.0 LITERATURE REVIEW 3
2.1 Soil 3
2.2 Soil Profile 3
2.3 The microbial community of the soil ecosystem 5
2.4 Ecological significance of soil microrganisms 5
2.5 Cassava 6
2.6 Cassava cultivation 7
2.7 Cassava Fermentation 8
2.8 Cassava waste water 11
2.9 Value adding of cassava waste products 11
2.10 Microorganisms associated with cassava waste water 12
2.10.1 Bacteria 12
2.10.2 Fungi 13
CHAPTER THREE
3.0 Materials and Methods 15
3.1 Study Area 15
3.2 Collection of samples 15
3.3 Sample preparation 15
3.3 Isolation of bacterial isolates 16
3.1.4 Characterization and identification of bacterial isolates 16
3.4.1 Gram staining 16
3.4.2 Spore staining 17
3.4.3 Motility test 17
3.5 Biochemical tests 17
3.5.1 Catalase test 17
3.5.2 Oxidase test 18
3.5.3 Methyl red test 18
3.5.4 Urease test 18
3.5.5 Indole test 19
3.5.6 Carbohydrate utilization test 19
3.6 Isolation of fungal isolates 20
3.7 Characterization of fungal Isolates 20
3.8 Determination of Physicochemical parameters 20
CHAPTER FOUR
4.0 Result 21
CHAPTER FIVE
5.0 Discussion 29
5.1 Conclusion 31
5.2 Recommendation 31
REFERENCES
NWOSU, N (2020). MICROBIAL ANALYSIS OF SOIL RECEIVING CASSAVA WASTE WATER IN UMUDIKE, ABIA STATE. Mouau.afribary.org: Retrieved Nov 13, 2024, from https://repository.mouau.edu.ng/work/view/microbial-analysis-of-soil-receiving-cassava-waste-water-in-umudike-abia-state
NWOSU, NWOSU. "MICROBIAL ANALYSIS OF SOIL RECEIVING CASSAVA WASTE WATER IN UMUDIKE, ABIA STATE" Mouau.afribary.org. Mouau.afribary.org, 30 Apr. 2020, https://repository.mouau.edu.ng/work/view/microbial-analysis-of-soil-receiving-cassava-waste-water-in-umudike-abia-state. Accessed 13 Nov. 2024.
NWOSU, NWOSU. "MICROBIAL ANALYSIS OF SOIL RECEIVING CASSAVA WASTE WATER IN UMUDIKE, ABIA STATE". Mouau.afribary.org, Mouau.afribary.org, 30 Apr. 2020. Web. 13 Nov. 2024. < https://repository.mouau.edu.ng/work/view/microbial-analysis-of-soil-receiving-cassava-waste-water-in-umudike-abia-state >.
NWOSU, NWOSU. "MICROBIAL ANALYSIS OF SOIL RECEIVING CASSAVA WASTE WATER IN UMUDIKE, ABIA STATE" Mouau.afribary.org (2020). Accessed 13 Nov. 2024. https://repository.mouau.edu.ng/work/view/microbial-analysis-of-soil-receiving-cassava-waste-water-in-umudike-abia-state