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Microalgal bioremediation of food-processing industrial wastewater under mixotrophic conditions: Kinetics and scaleup approach

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Title Microalgal bioremediation of food-processing industrial
wastewater under mixotrophic conditions: Kinetics and scaleup
approach
 
Creator Gupta , Suvidha
Pandey, R A
Pawar, Sanjay
 
Subject Industrial Wastewater Treatment & Disposal
Industrial Wastewater Reuse Recycle Recovery
Environmental Biotechnology
Chemistry, Chemical Technology
 
Description The Chlorella microalgae were mixotrophically
cultivated in an unsterilized and unfiltered raw foodprocessing
industrial wastewater. Both inorganic carbon
(CO2-air) and organic carbon (wastewater) were provided
simultaneously for microalgae growth. The aim of the
study is to find out the utilization rates of total organic
carbon (TOC) and chemical oxygen demand (COD) under
mixotrophic conditions for a given waste water. About
90% reduction in TOC and COD were obtained for all
dilutions of wastewater. Over 60% of nitrate and 40% of
phosphate were consumed by microalgae from concentrated
raw wastewater. This study shows that microalgae
can use both organic and inorganic sources of carbon in
more or less quantity under mixotrophic conditions. The
growth of microalgae in food-processing industrial wastewater
with all studied dilution factors, viz. zero (raw), 1.6
(dilution A), and 5 (dilution B) suggests that the freshwater
requirement could be reduced substantially (20%–60%).
The degradation kinetics also suggests that the microalgae
cultivation on a high COD wastewater is feasible and
scalable.
 
Publisher Springer
 
Date 2016
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/637/1/Springer%20article%20Suvidha1.pdf
Gupta , Suvidha and Pandey, R A and Pawar, Sanjay (2016) Microalgal bioremediation of food-processing industrial wastewater under mixotrophic conditions: Kinetics and scaleup approach. Frontiers of Chemical Science and Engineering, 10 (4). pp. 499-508. ISSN 2095-0187
 
Relation http://link.springer.com/article/10.1007/s11705-016-1602-2
http://neeri.csircentral.net/637/