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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 21, No. 5, 2017, pp. 985-990
Bioline Code: ja17113
Full paper language: English
Document type: Research Article
Document available free of charge

Journal of Applied Sciences and Environmental Management, Vol. 21, No. 5, 2017, pp. 985-990

 en Analysis of Microbiological and Physiochemical Properties of Top Soil from Municipal Dumpsites in Benin City
OSHOMA, CE; IGBETA, B & OMONIGHO, SE

Abstract

The effect of disposing municipal waste on soil was evaluated by analyzing the microbiological and enzyme activity of soil samples at three different locations, from five municipal waste dumpsites and compared with soil samples from a farmland which serves as the control. Soil microbial load, physicochemical parameters and enzyme activities were determined using standard procedure. The highest heterotrophic bacterial count (1.02 ± 0. 4 × 10 7 cfu/g) was recorded from New Benin market Dumpsite (sampling point A) while the least (3.25 ± 0.4 ×10 4 cfu/g) was from the control (sampling point C). The result obtained showed that there was significant difference (p> 0.05) in the Heterotrophic bacteria and fungi count between the control and the soil samples from the various locations of the dumpsites. The bacteria identified were Acinetobacter species, Micrococcus luetus check for this species in other resources , Pseudomonas aeruginosa check for this species in other resources , Serratia check for this species in other resources species, Bacillus subtilis check for this species in other resources , Klebsiella check for this species in other resources species, Staphylococcus aureus check for this species in other resources , Arthrobacter check for this species in other resources species, Escherichia coli check for this species in other resources and Streptococcus feacalis check for this species in other resources , while fungi identified were Aspergillus niger check for this species in other resources , Trichoderma check for this species in other resources species, Penicillium check for this species in other resources species, Fusarium check for this species in other resources species, Mucor check for this species in other resources species, Saccharomyces check for this species in other resources species, Rhizopus check for this species in other resources species. Pseudomonas aeruginosa was the most prevalent bacterial isolate (20.3 %) while Streptococcus feacalis was the least isolate (3.1 %). Aspergillus niger was the most prevalent fungi isolate and Fusarium species the least isolated fungi. The enzymatic profile revealed that Oba market and Satana market had the highest Dehydrogenase and Urease activities with the values of 23.70 ± 16.32 mg/g/6h and 97.90 ± 14.93 mg/g/24h respectively. The physicochemical parameter measured in this study showed that the soil samples were acidic (5.60 ± 0.17 – 6.23 ± 0.35) and sandy (72.20 ± 4.11 - 90.60 ± 0.00 %). Trace amount of zinc (0.10 ± 0.00 – 1.53 ± 1.02 mg/kg), lead (< 0.01 – 1.23 ± 0.17 mg/kg) and copper (0.01 ± 0.00 – 0.80 ± 0.10 mg/kg) was observed in both the control soil and the test samples. The result showed that although municipal waste dump is an unsustainable practice, it has a positive impact on the quality of the soil samples examined.

Keywords
Microbiological; Enzymatic; Municipal Waste Dumpsites; Soil; Benin City.

 
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