was cultivated with light at different wavelengths () and irradiation intensities () by applying a coloured tape (CT) as a simple, inexpensive light filter. was cultivated in a standard medium using blue (CT), green (CT), red (CT), yellow (CT) and white (CT) CT to filter the light, as well the unfiltered light (U). The influence of and on specific growth rate (), nutrient removal efficiency (% RE of total nitrogen, TN, and phosphorus, TP), CO fixation rate () and lipid productivity () were evaluated. The highest biomass concentration of 2.26 g L was measured for CT with corresponding , TN and TP , and values of 0.95 d, 92% and 100%, 0.67 g L d and 83.6 mg L d, respectively. The normalised and for U were significantly lower than in CT of 33-50% and 75%, respectively. The corresponding non-normalised parameter values for CT were significantly lower at 0.45 d, 0.18 g L, 15% and 37%, 0.03 g L d and 1.2 mg L d. Results suggest a significant impact of and , with up to a 50% increase in growth and nutrient RE from optimising these parameters.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1080/09593330.2018.1437778 | DOI Listing |
J Environ Manage
November 2024
Department of Civil and Environmental Engineering, Seoul National University, 151-744, Seoul, South Korea. Electronic address:
The feasibility of microalgae-based biofuel production is still unclear due to the high cost and energy consumption. In order to be competitive with traditional fuels, the price per unit biofuel produced should be reduced by improving microalgal cells quality for higher biofuels productivity as well as enhancing microalgae other advantages such as wastewater treatment (WWT) and CO bio-fixation. In this research, the synergistic effect of iron (Fe) and zinc (Zn) addition to municipal wastewater (MWW) on Chlorella sorokiniana Pa.
View Article and Find Full Text PDFJ Environ Manage
July 2024
Department of Bioprocess Engineering and Biotechnology, Federal University of Paraná, Centro Politécnico, CP 19011, Curitiba, PR, 81531-908, Brazil.
Microalgae-mediated industrial flue gas biofixation has been widely discussed as a clean alternative for greenhouse gas mitigation. Through photosynthetic processes, microalgae can fix carbon dioxide (CO) and other compounds and can also be exploited to obtain high value-added products in a circular economy. One of the major limitations of this bioprocess is the high concentrations of CO, sulfur oxides (SOx), and nitrogen oxides (NOx) in flue gases, according to the origin of the fuel, that can inhibit photosynthesis and reduce the process efficiency.
View Article and Find Full Text PDFBioresour Technol
February 2024
School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China. Electronic address:
Urban areas remarkably affect global public health due to their emissions of greenhouse gases and poor air quality. Although urban areas only cover 2% of the Earth's surface, they are responsible for 80% of greenhouse gas emissions. Dense buildings limit vegetation, leading to increased air pollution and disruption of the local and regional carbon cycle.
View Article and Find Full Text PDFBioresour Technol
August 2023
Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China; Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates. Electronic address:
To improve the CO dissolution and carbon fixation in the process of microalgae capturing CO from flue gas, a nanofiber membrane containing iron oxide nanoparticles (NPsFeO) for CO adsorption was prepared, and coupled with microalgae utilization to achieve carbon removal. The performance test results showed that the largest specific surface area and pore size were 8.148 m g and 27.
View Article and Find Full Text PDFSci Total Environ
August 2023
School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia. Electronic address:
Bio-coatings serve as artificial scaffolds for immobilizing microalgae to facilitate cell concentration and harvesting. It has been used as an additional step to enhance the natural microalgal biofilm cultivation and to promote new opportunities in artificially-immobilize cultivation technology of microalgae. This technique is able to enhance biomass productivities, enable energy and cost saving, water volume reduction and ease of biomass harvesting since the cells are physically isolated from the liquid medium.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!