TY - JOUR
T1 - Acclimation of consortium of micro-algae help removal of organic pollutants from meat processing wastewater
AU - Hu, Xinjuan
AU - Meneses, Yulie E.
AU - Stratton, Jayne
AU - Wang, Bing
N1 - Funding Information:
This study was possible thanks to the financial support of the Daugherty Water for Food Global Institute. The authors would also like to thank Rami Ziara and Bruce Dvorak for the collection of wastewater sample and Fatty Acid Transport, Trafficking and Transcriptional Regulation Laboratory at the University of Nebraska-Lincoln as well as Mark Behrens for providing the microalgae inoculum and cultivation training.
Funding Information:
This study was possible thanks to the financial support of the Daugherty Water for Food Global Institute . The authors would also like to thank Rami Ziara and Bruce Dvorak for the collection of wastewater sample and Fatty Acid Transport, Trafficking and Transcriptional Regulation Laboratory at the University of Nebraska-Lincoln as well as Mark Behrens for providing the microalgae inoculum and cultivation training.
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2019/3/20
Y1 - 2019/3/20
N2 - The purpose of this study was to acclimate and select microalgae species to efficiently remove organic pollutants from meat processing wastewater while accumulating biomass for further processing. Results showed that C. protothecoides, S. obliquus and C. vulgaris and their consortia presented robust growth in synthesized wastewater. Acclimated S. obliquus, C. vulgaris and C. sorokiniana adapted better to the environment in wastewater and achieved significantly (P < 0.05) higher biomass than those without acclimatization. At the end of the nine-day-treatment period, S. obliquus and its consortium with C. vulgaris achieved the highest biomass accumulation (1.7 g/L). However, cultivation periods longer than five days did not significantly (P > 0.05) improve the microalgal removal of chemical oxygen demand (COD) and nutrients under conditions evaluated in this study. Results showed that 74% total phosphate (TP-PO 4 3- ), 52% total nitrogen (TN) and 87% COD were removed from wastewater after five-day microalgae treatment, which was higher than the removal observed in control samples (48% TP-PO 4 3- , 32%TN, 84% COD). Microalgae treatment did not improve COD removal but was able to accelerate the removal rate. A consortium containing three species (S. obliquus + C. vulgaris + C. sorokiniana) was assessed to improve nutrients and COD removal. The consortium achieved higher removal of COD (91%), TN (67%) and TP-PO 4 3- (69%). Therefore, the acclimated consortium of S. obliquus + C. vulgaris + C. sorokiniana can be effectively used in the treatment of heavily polluted meat processing wastewater as primary or secondary treatment option.
AB - The purpose of this study was to acclimate and select microalgae species to efficiently remove organic pollutants from meat processing wastewater while accumulating biomass for further processing. Results showed that C. protothecoides, S. obliquus and C. vulgaris and their consortia presented robust growth in synthesized wastewater. Acclimated S. obliquus, C. vulgaris and C. sorokiniana adapted better to the environment in wastewater and achieved significantly (P < 0.05) higher biomass than those without acclimatization. At the end of the nine-day-treatment period, S. obliquus and its consortium with C. vulgaris achieved the highest biomass accumulation (1.7 g/L). However, cultivation periods longer than five days did not significantly (P > 0.05) improve the microalgal removal of chemical oxygen demand (COD) and nutrients under conditions evaluated in this study. Results showed that 74% total phosphate (TP-PO 4 3- ), 52% total nitrogen (TN) and 87% COD were removed from wastewater after five-day microalgae treatment, which was higher than the removal observed in control samples (48% TP-PO 4 3- , 32%TN, 84% COD). Microalgae treatment did not improve COD removal but was able to accelerate the removal rate. A consortium containing three species (S. obliquus + C. vulgaris + C. sorokiniana) was assessed to improve nutrients and COD removal. The consortium achieved higher removal of COD (91%), TN (67%) and TP-PO 4 3- (69%). Therefore, the acclimated consortium of S. obliquus + C. vulgaris + C. sorokiniana can be effectively used in the treatment of heavily polluted meat processing wastewater as primary or secondary treatment option.
KW - Meat processing wastewater
KW - Microalga consortium
KW - Microalga-bacteria
KW - Wastewater treatment
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U2 - 10.1016/j.jclepro.2018.12.255
DO - 10.1016/j.jclepro.2018.12.255
M3 - Article
AN - SCOPUS:85060891348
SN - 0959-6526
VL - 214
SP - 95
EP - 102
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
ER -