Cultivation of Chlorella sp. using raw dairy wastewater for nutrient removal and biodiesel production: Characteristics comparison of indoor bench-scale and outdoor pilot-scale cultures

2015 ◽  
Vol 192 ◽  
pp. 382-388 ◽  
Author(s):  
Weidong Lu ◽  
Zhongming Wang ◽  
Xuewei Wang ◽  
Zhenhong Yuan
Keyword(s):  
Nutrient Removal ◽  
Pilot Scale ◽  
Dairy Wastewater ◽  
Biodiesel Production ◽  
Bench Scale ◽  
Chlorella Sp ◽  
Production Characteristics

scholarly journals Exploration of Microalgal Species for Nutrient Removal from Anaerobically Digested Swine Wastewater and Potential Lipids Production

2021 ◽  
Vol 9 (12) ◽  
pp. 2469
Author(s):  
Zhihui Chen ◽  
Yunhua Xiao ◽  
Tan Liu ◽  
Mingmin Yuan ◽  
Gang Liu ◽  
...  
Keyword(s):  
Nutrient Removal ◽  
Lipid Production ◽  
Ammonia Nitrogen ◽  
Biodiesel Production ◽  
Swine Wastewater ◽  
Biomass Composition ◽  
Chlorella Sp ◽  
Growth Performances ◽  
Lipids Production ◽  
Nitrogen Phosphorus

Bio-treatment of anaerobically treated swine wastewater (ADSW) mediated by microalgae has been deemed as a promising strategy. In the present study, six microalgal strains were used to conduct batch experiments in 0~100% ADSW in order to evaluate their potentials for nutrient removal and biodiesel production. Two strains, Chlorella vulgaris FACHB-8 and Chlorella sp. FACHB-31, were selected based on their better growth performances, higher tolerance to wastewater (up to 100%), and better nutrient removal abilities. The capacity of each strain to remove TN, TP, NH4+-N, as well as lipid production and biomass composition in 100% ADSW were further examined. After 15 days of culture, 87.68~89.85%, 92.61~93.68%, and 97.02~97.86% of the nitrogen, phosphorus, and ammonia nitrogen were removed by Chlorella sp. FACHB-31 and C. vulgaris FACHB-8. Their lipid content and lipid productivities were 29.63~33.33% and 18.91~23.10 mg L−1 d−1, respectively. Proteins were both the major biomass fraction followed by lipids and then carbohydrates. Their fatty acid profiles both mainly consisted of C-16:0, C-18:1, C-18:0, and C-18:2. Taken together, our results suggest that C. vulgaris FACHB-8 and Chlorella sp. FACHB-31 are potential candidates for biodiesel production by using ADSW as a good feedstock.

Effect of addition of anaerobic fermented OFMSW (organic fraction of municipal solid waste) on biological nutrient removal (BNR) process: preliminary results

1998 ◽  
Vol 38 (1) ◽  
pp. 327-334 ◽  
Author(s):  
P. Pavan ◽  
P. Battistoni ◽  
P. Traverso ◽  
A. Musacco ◽  
F. Cecchi
Keyword(s):  
Nutrient Removal ◽  
Fermentation Process ◽  
Organic Waste ◽  
Anaerobic Fermentation ◽  
Pilot Scale ◽  
Biological Nutrient Removal ◽  
Organic Fraction ◽  
P Release ◽  
Pure Methanol ◽  
P Removal

The paper presents results coming from experiments on pilot scale plants about the possibility to integrate the organic waste and wastewater treatment cycles, using the light organic fraction produced via anaerobic fermentation of OFMSW as RBCOD source for BNR processes. The effluent from the anaerobic fermentation process, with an average content of 20 g/l of VFA+ lactic acid was added to wastewater to be treated in order to increase RBCOD content of about 60-70 mg/l. The results obtained in the BNR process through the addition of the effluent from the fermentation unit are presented. Significant increase of denitrification rate was obtained: 0.06 KgN-NO3/KgVSS d were denitrified in the best operative conditions studied. -Vmax shows values close to those typical of the pure methanol addition (about 0.3 KgN-NO3/KgVSS d). A considerable P release (35%) was observed in the anaerobic step of the BNR process, even if not yet a completely developed P removal process.

scholarly journals 244 Algae taste preference of Chlorella sp. from dairy wastewater by weaned dairy calves

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 15-15
Author(s):  
Bradley J Heins ◽  
Siane C Luzzi ◽  
Robert D Gardner
Keyword(s):  
Dry Matter ◽  
Taste Preference ◽  
Dairy Wastewater ◽  
Control Treatment ◽  
Central Research ◽  
Solar Panels ◽  
University Of Minnesota ◽  
Chlorella Sp ◽  
Coefficient Of Concordance ◽  
The Difference

Abstract The objective of this study was to evaluate the taste preference of calves fed Chlorella sp. microalgae produced from dairy lagoon wastewater. The study was conducted at the University of Minnesota West Central Research and Outreach Center, Morris, MN, dairy during May 2019. Six Holstein and crossbred dairy heifer calves were fed 0 (control), 30, and 60 g of Chlorella sp. daily in a sequential elimination study. For the 7-d experiment, day 1 to 2 were for diet adaptation and day 3 to 4 were for data collection. During the final 3 days, the primarily consumed treatment was removed to determine the second preferred treatment. The microalgae used in this study was isolated from the dairy wastewater lagoon. The microalgae biomass was produced using outdoor hanging bag bioreactors with Chlorella sp. to recycle the dairy wastewater. The biomass was sterilized and kept frozen at -4°C until fed to calves. Calves were housed individually in hutches with outdoor access under solar panels, with free-choice water. Kendall’s coefficient of concordance was calculated to rank the consumption of the treatments from most to least preferred using JMP 14.3 statistical software. Pairwise comparisons and Tukey adjustment were applied to evaluate the difference between the treatments for total intake. Calves consumed more (P < 0.05) dry matter from control grain (3.4 kg/d) compared to 30 g microalgae grain (2.42 kg/d) and 60 g microalgae grain (1.56 kg/d) during the first 2-d period. During the second 2-d (d 3 and 4) segment, dry matter intake was reduced (P < 0.05) for the 60 g microalgae treatment compared to the control and 30 g microalgae treatment. Five of six calves in this study always ranked the control treatment first (P < 0.05) when given a choice, and ranked the 30 g microalgae second choice. Results indicated that microalgae maybe added to calf starter grains without any adverse effects; however, calves preferred calf starter grains without microalgae.

Biodiesel production on bench scale from different sources of waste oils by using NiZn magnetic heterogeneous nanocatalyst

2021 ◽  
Author(s):  
Joelda Dantas ◽  
Elvia Leal ◽  
António B. Mapossa ◽  
Julyanne R. M. Pontes ◽  
Normanda L. Freitas ◽  
...  
Keyword(s):  
Biodiesel Production ◽  
Heterogeneous Nanocatalyst ◽  
Bench Scale ◽  
Waste Oils ◽  
Different Sources
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