Journal of Food: Microbiology, Safety & Hygiene
Open Access

The production and application of bioflocculants and their nanoparticles in dairy wastewater treatment

Joint Event on International Conference on Food Safety & Regulatory & 3^rd International Conference on Water Microbiology, Water Sustainability and Reuse Technologies

December 03-04, 2018 | Chicago, USA

Adeleke R Oluwakamiye

University of Ibadan, Nigeria

Posters & Accepted Abstracts: J Food Microbiol Saf Hyg

Abstract :

One of the most pervasive and challenging problems faced by dairy industries is the availability of clean water, reclamation of wastewater and its discharge. This challenge requires modern biotechnological and the fast-growing nanotechnological approaches as robust and newest methods of treating and purifying water at lower cost with less energy in production industries, while at the same time minimizing the use of chemical flocculants and the deleterious health and environmental effects. Bioflocculants, and its silver and magnetic nanoparticles were produced and applied in dairy wastewater treatment. The flocculating activity of all the isolates ranged from 12.14-85.39 % in which Bacillus subtilis B2 had the highest flocculating efficiency (85.40%). The best three with high flocculating efficiencies were selected for further studies and production of nanoparticles. They were Bacillus subtilis B2 (85.39%), Fusarium sp. F6. (81.30%) and Bacillus licheniformis B5 (70.88 %). The application of the bioflocculant nanoparticles brought about a reduction in BOD, COD, TSS, TDS, pH, Salinity, Conductivity and turbidity with percentage reduction ranging from 1.11% - 44.17% for BOD, 16.12â??71.44% for COD, 7.61â??83.70% for TSS, 2.02%â??74.94% for TDS, 4.8â??6.2 for pH, 2.38%-85.20% for salinity, 15.25%-85.69% for conductivity and for turbidity 2.56%-85.09%. Metal content reduction ranged from 2.91%-71.46% for Fe, 6.15%-95.38% for Cu and 12.57%-97.96% for Zn. Fourier transform infrared spectroscopy revealed the carboxyl (COH) and hydroxyl (OH) group that gave rise to reduced and stable nanoparticle bioflocculants. Scanning electron micrograph showed their crystalline fluffy structures, dendritic nature in different shapes and sizes.

Biography :

Adeleke R Oluwakamiye is a first-year PhD student in the Biotechnology and Industrial Microbiology program, University of Ibadan, Nigeria. where she is working to proffer solution to the seemingly unending problem faced by industries in the reuse and discharge of wastewater. She is interested in employing a biotechnological and nanotechnological approach in mitigating and recycling wastewater discharge from factories/industries.

E-mail: rachaeloluwakamiye@yahoo.com