PETROLEUM PRODUCED (FORMATION) WATER INDUCED CHANGES IN BACTERIAL QUALITY AND SOIL ENZYMATIC ACTIVITIES IN A FARMLAND IN EGBEMA SOUTHERN NIGERIA

Autores

  • Victor Oluoha Nwaugo
  • Reginald Azuonye Onyeagba
  • Nelson Azu
  • Okoro Nworie

DOI:

https://doi.org/10.7213/reb.v29i66.22751

Palavras-chave:

Petroleum-produced water, Soil bacterial diversity, Soil enzymes

Resumo

The effects of petroleum-produced water (PPW) in bacterial population and soil enzymatic activities in cassava farmland in Egbema were investigated. Results obtained showed that the flow carried away soil, silt, organic matter, and total phosphorus and nitrogen creating areas with different impacting degrees. This resulted in lower bacterial prevalence and diversity in heavily impacted soil that increased in moderately impacted. In the lightly impacted soil the results were above the control. Most affected were the nitrifying bacteria followed by the coliforms and the hydrocarbon utilizing bacteria. In other hand, total heterotrophic bacteria were the least affected. Urease has presented 5.8 times higher activity in the lightly impacted soil and 5.4 times in the control than the 0.62 mg NH3-N/g/24 h observed in the heavily impacted soil. Dehydrogenases have showed 5.2 times more activity in the lightly impacted soil with only 4.71 mg/g/6 h in the heavily impacted soil. Hydrogen peroxidase and polyphenol-oxidase have shown similar pattern in all impacting situation. Alkaline phosphatase did not show any significant change in activity while the change in activity of acid phosphatase was very low. PPW therefore affected bacterial quality and soil enzymatic activities adversely when in high quantity but when in low quantity encouraged higher bacterial diversity and soil enzymatic activities.

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Publicado

2007-11-24

Como Citar

Nwaugo, V. O., Onyeagba, R. A., Azu, N., & Nworie, O. (2007). PETROLEUM PRODUCED (FORMATION) WATER INDUCED CHANGES IN BACTERIAL QUALITY AND SOIL ENZYMATIC ACTIVITIES IN A FARMLAND IN EGBEMA SOUTHERN NIGERIA. Estudos De Biologia, 29(66). https://doi.org/10.7213/reb.v29i66.22751

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