Selection and characterization of microalgae with potential for nutrient removal from municipal wastewater and simultaneous lipid production

2020 ◽  
Vol 129 (5) ◽  
pp. 565-572 ◽  
Author(s):  
Tsuyoshi Aketo ◽  
Yumiko Hoshikawa ◽  
Daisuke Nojima ◽  
Yusuke Yabu ◽  
Yoshiaki Maeda ◽  
...  
Keyword(s):  
Nutrient Removal ◽  
Municipal Wastewater ◽  
Lipid Production

scholarly journals Evaluation of Scenedesmus rubescens for Lipid Production from Swine Wastewater Blended with Municipal Wastewater

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4895
Author(s):  
Joseph Christian Utomo ◽  
Young Mo Kim ◽  
Hyun Uk Cho ◽  
Jong Moon Park
Keyword(s):  
Nutrient Removal ◽  
Municipal Wastewater ◽  
Lipid Production ◽  
Lipid Productivity ◽  
Swine Wastewater ◽  
Practical Feasibility ◽  
Scenedesmus Rubescens

This study examined the feasibility of using non-sterilized swine wastewater for lipid production by an isolated microalga, Scenedesmus rubescens. Different dilution ratios using municipal wastewater as a diluent were tested to determine the suitable levels of microalgal growth in the wastewaters, its nutrient removal, and its lipid production. The highest lipid productivity (8.37 mg/L/d) and NH4+ removal (76.49%) were achieved in swine wastewater that had been diluted to 30 times using municipal wastewater. Various bacteria coexisted in the wastewaters during the cultivation of S. rubescens. These results suggest the practical feasibility of a system to produce lipids from swine wastewater by using microalgae.

Effect of mine wastewater on nutrient removal and lipid production by a green microalga Micratinium reisseri from concentrated municipal wastewater

2014 ◽  
Vol 157 ◽  
pp. 84-90 ◽  
Author(s):  
Min-Kyu Ji ◽  
Akhil N. Kabra ◽  
El-Sayed Salama ◽  
Hyun-Seog Roh ◽  
Jung Rae Kim ◽  
...  
Keyword(s):  
Nutrient Removal ◽  
Municipal Wastewater ◽  
Lipid Production ◽  
Green Microalga ◽  
Mine Wastewater

scholarly journals Autochthonous microalgae cultivation with anaerobic effluent: isolation of strains, survivorship, and characterization of the produced biomass

2019 ◽  
Vol 14 (4) ◽  
pp. 1 ◽  
Author(s):  
Helenice Silva de Jesus ◽  
Servio Tulio Alves Cassini ◽  
Marcos Vinicius Pereira ◽  
Aline Figueredo Dassoler ◽  
Ricardo Franci Gonçalves
Keyword(s):  
Nitrogen Removal ◽  
Nutrient Removal ◽  
Phosphorus Removal ◽  
Municipal Wastewater ◽  
Microalgae Cultivation ◽  
Anaerobic Reactor ◽  
Laboratory Conditions ◽  
Chlorella Sp

Six Chlorophyta strains were isolated from the effluent of an anaerobic reactor treating municipal wastewater and identified as Desmodesmus sp. L02, Chlorococcum sp. L04, Coccomyxa sp. L05, Chlorella sp. L06, Scenedesmus sp. L08 and Tetradesmus sp. L09. The microalgae strains were cultivated in unsterilized wastewater under laboratory conditions to determine their potential to survive under non-sterile conditions. The strains were also cultivated in sterilized wastewater in order to analyze their nutrient removal potential and characterize the produced biomass. Amongst the isolated microalgae, Chlorella sp. L06 had the highest survivorship percentage (90%) for ten days of culture, whilst Desmodesmus sp. L02 had the lowest, not exceeding 1.8% after 24h of inoculation. The dried biomass of the isolates showed an average of 28.7% of protein, 15.4% of lipids and 14.8% of carbohydrates, with Chlorococcum sp. L04 reaching 29.3% of carbohydrates. In terms of nutrients, nitrogen removal varied from 59.2 to 93%, and phosphorus removal ranged from 79.1 to 95.4%, with Tetradesmus sp. L09 being the most efficient strain.

Generic monitoring tools for water characteristics assessment

2003 ◽  
Vol 3 (1-2) ◽  
pp. 351-357
Author(s):  
S. Le Bonté ◽  
M.-N. Pons ◽  
O. Potier ◽  
S. Chanel ◽  
M. Baklouti
Keyword(s):  
Municipal Wastewater ◽  
Principal Component ◽  
Toxic Substances ◽  
Capacity Curves ◽  
Water Characteristics ◽  
Monitoring Tools ◽  
Visible Spectra ◽  
On Line ◽  
Mining Procedure

An adaptive principal component analysis applied to sets of data provided by global analytical methods (UV-visible spectra, buffer capacity curves, respirometric tests) is proposed as a generic procedure for on-line and fast characterization of wastewater. The data-mining procedure is able to deal with a large amount of information, takes into account the normal variations of wastewater composition related to human activity, and enables a rapid detection of abnormal situations such as the presence of toxic substances by comparison of the actual wastewater state with a continuously updated reference. The procedure has been validated on municipal wastewater.

Expenditure on the operation of municipal wastewater treatment plants for nutrient removal

2000 ◽  
Vol 41 (9) ◽  
pp. 281-289 ◽  
Author(s):  
O. Nowak
Keyword(s):  
Nutrient Removal ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
General Scheme ◽  
Operating Costs ◽  
Municipal Wastewater Treatment ◽  
Wastewater Purification ◽  
Labour Costs ◽  
Municipal Wastewater Treatment Plants ◽  
P Removal

Operating costs of Austrian municipal treatment plants are evaluated for 1989/90 and for 1997, respectively. The results indicate that presently the expenses which can be directly connected to wastewater purification, i.e. energy and chemicals for P removal, comprise only about 20% of the total operating costs. Today, in Austria like in other EU countries, the predominating factor is “labour costs”, even at nutrient removal plants. A general scheme for estimating operating costs is presented that can be applied to WWTPs in other parts of the world. In this scheme the important factors relevant to the operating costs are integrated.

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