Optimisation of bioflocculant production by a biofilm forming microorganism from poultry slaughterhouse wastewater for use in poultry wastewater treatment

Poultry slaughterhouse wastewater contains nutrients that are sufficient for microbial growth; moreover, the wastewater has microorganisms which can be harnessed to perform specific functions. Additionally, these microorganisms can grow either in planktonic (free floating) mode or sessile (attached)...

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Bibliographic Details
Published in:Water science and technology 2016-04, Vol.73 (8), p.1963-1968
Main Authors: Dlangamandla, C, Dyantyi, S A, Mpentshu, Y P, Ntwampe, S K O, Basitere, M
Format: Article
Language:English
Subjects:
Abattoirs
Alkanes
Alzheimer's disease
Amines
Analytical methods
Animal wastes
Animals
Bacteria
Biochemistry
Biofilms
Biofloc technology
Biotechnology
Clay
Comamonas
Comamonas - physiology
Experiments
Flocculation
Fourier analysis
Fourier transforms
Free floating
Functional groups
Indication
Industrial Waste
Infrared analysis
Infrared spectroscopy
Kaolin
Kaolin - chemistry
Microbiological strains
Microorganisms
Mineral nutrients
Nutrients
Optimization
pH effects
Poultry
Proteins
Spectroscopic analysis
Spectroscopy, Fourier Transform Infrared
Temperature
Waste Disposal, Fluid - methods
Waste Water - chemistry
Wastewater
Wastewater treatment
Water Pollutants, Chemical
Water treatment
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Summary:Poultry slaughterhouse wastewater contains nutrients that are sufficient for microbial growth; moreover, the wastewater has microorganisms which can be harnessed to perform specific functions. Additionally, these microorganisms can grow either in planktonic (free floating) mode or sessile (attached) mode. This study focused on the optimisation of bioflocculant production by quantifying flocculation activity, determined using kaolin clay (4 g/L), by isolates prevalent in poultry slaughterhouse wastewater. Subsequent to their identification and characterisation, six bacterial strains were initially isolated from the poultry wastewater. Although all the isolated microorganisms produced bioflocculants under different conditions, i.e. pH and temperature, the strain that produced bioflocculants with a higher flocculation activity was isolate BF-3, a Comamonas sp., achieving a flocculation activity of 93.8% at 32.9 °C and pH 6.5. Fourier transform infrared spectroscopy (FTIR) analysis of the bioflocculant of the isolate, showed the presence of hydroxyl, carboxyl, alkane and amine functional groups, an indication that the bioflocculant was a protein constituent.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2016.047