Degradation Potentials Of Tropical Soil Bacteria On Detergents

Obinna C Nwinyi,Phoebe O Umane

doi:10.1088/1755-1315/665/1/012071

Obinna C Nwinyi, Phoebe O Umane

Open Access

https://doi.org/10.1088/1755-1315/665/1/012071

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Abstract

Detergents are chemicals of high environmental importance owing to their production volumes. They are mainly released into the environment through wastewater pathway and it could severely affect the soil environment. In this study, we examined the degradation potentials of soil bacteria in liquid culture media induced with detergents. Using conventional enrichment methods, via contaminated soil slurry enrichment with selected alkyl-benzene sulphonates (detergents), we obtained pure bacteria species capable of using alkyl-benzene sulphonates as the sole source of carbon and energy. From the morphological and biochemical characterization and comparison with respect to the standard reference organisms, the bacteria isolates were presumably Corynebacterium, Pseudomonas, and Bacillus species. Different concentrations 5.0, 10.0 15.0, and 20.0 w/v of the branded detergents were prepared as sole carbon and energy and screened against our bacteria species to determine their physiological gradient fluxes after 96hours of incubation. Data obtained showed an increase in Optical density (OD) as well as increases in pH flux values. The mean OD data obtained ranged between 0.017- 0.818, with a pH of 7.47-8.95. From this study, tropical soils possess unique bacteria species capable of utilizing alkyl-benzene sulphonates (detergents).

Highlights

Detergents are cleaning products derived from synthetic organic chemicals that are meant for waterbased laundry or dishwashing processes [1]
Increase in the turbidity (Optical density OD) fluxes and pH changes, when compared with the initial values after experiment setup may be regarded as utilization of the detergents (Omo and Sunlight) as carbon and energy sources by the bacteria species
Within the period of incubation 0-96 hours, Corynebacterium species exhibited an increase in pH (7.69-8.57) as well as a corresponding increase in the turbidity OD

Summary

INTRODUCTION

Detergents are cleaning products derived from synthetic organic chemicals that are meant for waterbased laundry or dishwashing processes [1]. It has advantages over soaps because it’s readily produced from petrochemical sources; and its efficient when used in acid or hard waters. The commercial detergents, contain between 10 and 20% surfactants, and other components which include but not limited to perfume, enzymes bleach and dyes [3]. Biodegradation describes how organic (carbon-containing) detergent ingredients, enzymes, and fragrances, are mineralized into carbon dioxide, water, and other compounds by the action of microorganisms such as bacteria. The bacteria utilize surfactants as substrates for energy, carbon sources or electrons. Biodegradation of surfactant in the environment are influenced by several factors.

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DISCUSSION