Bioremediation of wastewaters from local textile industries

Abdullahi AJAO; Sunday AWE

doi:https://doi.org/10.38061/idunas.498825

Article Details

Bioremediation of wastewaters from local textile industries

Authors:

Abdullahi AJAO | Sunday AWE

Publisher:

Izmir University of Democracy

Main Topics:

Ecology

Journal:

Natural and Applied Sciences Journal 2018 Vol.1 Issue 2, pp.16-25

Document Type:

Article

Publication Date:

12/2018

Document Language:

English

Document ID (Org No.):

2000609468

Frequency:

Bi-Annual

pISSN:

2645-9000

DOI:

https://doi.org/10.38061/idunas.498825

Abstract:

 


 The present study evaluates the bioremediation potential of indigenous bacterial species isolated from dye-contaminated soil samples from small dyeing outlet located in Ilorin. The water pollution index was estimated based on the physicochemical characteristics and heavy metal concentrations of the raw (Day 0) and treated textile wastewater such as pH, biochemical oxygen demand-5, chemical oxygen demand, total suspended solids and total dissolved solid with mean values of 8.85±0.45 mg/L, 1200±21.3 mg/L, 2440±31.3 mg/L, 1660±17.2 mg/L and 2650±28.1 mg/L respectively, similarly, Lead was the most abundant heavy metal detected in the sample while Cadmium concentration was the lowest with the mean values of 3.52±0.00 mg/L and 2.18±0.00 mg/L respectively. The bacterial strain with highest dye decolorization capacity was screened and identified as Bacillus licheniformis ZUL012.The isolate was consequently used for the bioremediation of the wastewater over a period of 10 days. The results showed an incredible reduction in the  physiochemical characteristics and heavy metal concentrations of the textile wastewater in the following ranges (8.85-6.55), (1200-300) mg/L, (2440-518) mg/L, (1660-666) mg/L and (2650-920) mg/L with the highest removal efficiency of 75 %, 78 %, 60%, 65%,  recorded for biochemical oxygen demand, chemical oxygen demand, total suspended solid, total dissolved solid, respectively while that of heavy metals such as lead, cadmium, chromium and nickel were 80 %, 60 %, 67 %, 72 % reduction, respectively. Laccase and Azoreductase activities tend to decrease as the pH gradually moved towards acidic condition during the bioremediation process. Toxicity of the treated effluent was assessed using Maize and Bean seed germination test. Conclusively, these research findings can serve as a framework for the outlet design of wastewater treatment plant for local textile outlets.

.

 


 The present study evaluates the bioremediation potential of indigenous
bacterial species isolated from dye-contaminated soil samples from small dyeing
outlet located in Ilorin. The water pollution index was estimated based on the
physicochemical characteristics and heavy metal concentrations of the raw (Day
0) and treated textile wastewater such as pH, biochemical oxygen demand-5,
chemical oxygen demand, total suspended solids and total dissolved solid with
mean values of 8.85±0.45 mg/L, 1200±21.3 mg/L, 2440±31.3 mg/L, 1660±17.2 mg/L
and 2650±28.1 mg/L respectively, similarly, Lead was the most abundant heavy
metal detected in the sample while Cadmium concentration was the lowest with
the mean values of 3.52±0.00 mg/L and 2.18±0.00 mg/L respectively. The bacterial
strain with highest dye decolorization capacity was screened and identified as Bacillus licheniformis ZUL012.The
isolate was consequently used for the bioremediation of the wastewater over a
period of 10 days. The results showed an incredible reduction in the  physiochemical characteristics and heavy
metal concentrations of the textile wastewater in the following ranges
(8.85-6.55), (1200-300) mg/L, (2440-518) mg/L, (1660-666) mg/L and (2650-920)
mg/L with the highest removal efficiency of 75 %, 78 %, 60%, 65%,  recorded for biochemical oxygen demand,
chemical oxygen demand, total suspended solid, total dissolved solid,
respectively while that of heavy metals such as lead, cadmium, chromium and
nickel were 80 %, 60 %, 67 %, 72 % reduction, respectively. Laccase and
Azoreductase activities tend to decrease as the pH gradually moved towards
acidic condition during the bioremediation process. Toxicity of the treated
effluent was assessed using Maize and Bean seed germination test. Conclusively,
these research findings can serve as a framework for the outlet design of
wastewater treatment plant for local textile outlets.

.

Article Details

Bioremediation of wastewaters from local textile industries

Authors: Abdullahi AJAO | Sunday AWE

Publisher: Izmir University of Democracy

Main Topics: Ecology

Journal: Natural and Applied Sciences Journal 2018 Vol.1 Issue 2, pp.16-25

Document Type: Article

Publication Date: 12/2018

Document Language: English

Document ID (Org No.): 2000609468

Frequency: Bi-Annual

pISSN: 2645-9000

DOI: https://doi.org/10.38061/idunas.498825

Issues

Authors:

Abdullahi AJAO | Sunday AWE

Publisher:

Izmir University of Democracy

Main Topics:

Ecology

Journal:

Natural and Applied Sciences Journal 2018 Vol.1 Issue 2, pp.16-25

Document Type:

Article

Publication Date:

12/2018

Document Language:

English

Document ID (Org No.):

2000609468

Frequency:

Bi-Annual

pISSN:

2645-9000

DOI:

https://doi.org/10.38061/idunas.498825