1
|
Li F, Rui X, Amenorfenyo DK, Pan Y, Huang X, Li C. Effects of Temperature, Light and Salt on the Production of Fucoxanthin from Conticribra weissflogii. Mar Drugs 2023; 21:495. [PMID: 37755108 PMCID: PMC10532545 DOI: 10.3390/md21090495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 09/03/2023] [Accepted: 09/15/2023] [Indexed: 09/28/2023] Open
Abstract
Fucoxanthin is a natural active substance derived from diatoms that is beneficial to the growth and immunity of humans and aquatic animals. Temperature, light and salinity are important environmental factors affecting the accumulation of diatom actives; however, their effects on the production of fucoxanthin in C. weissflogii are unclear. In this study, single-factor experiments are designed and followed by an orthogonal experiment to determine the optimal combination of fucoxanthin production conditions in C. weissflogii. The results showed that the optimum conditions for fucoxanthin production were a temperature of 30 °C, a light intensity of 30 umol m-2 s-1 and a salinity of 25. Under these conditions, the cell density, biomass, carotenoid content and fucoxanthin content of C. weissflogii reached 1.97 × 106 cell mL-1, 0.76 g L-1, 2.209 mg L-1 and 1.372 mg g-1, respectively, which were increased to 1.53, 1.71, 2.50 and 1.48 times higher than their initial content. The work sought to give useful information that will lead to an improved understanding of the effective method of cultivation of C. weissflogii for natural fucoxanthin production.
Collapse
Affiliation(s)
- Feng Li
- College of Fisheries, Guangdong Ocean University, Zhangjiang 524088, China; (X.R.); (D.K.A.); (Y.P.); (X.H.)
| | | | | | | | | | - Changling Li
- College of Fisheries, Guangdong Ocean University, Zhangjiang 524088, China; (X.R.); (D.K.A.); (Y.P.); (X.H.)
| |
Collapse
|
2
|
Bhandari M, Kumar P, Bhatt P, Simsek H, Kumar R, Chaudhary A, Malik A, Prajapati SK. An integration of algae-mediated wastewater treatment and resource recovery through anaerobic digestion. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 342:118159. [PMID: 37207460 DOI: 10.1016/j.jenvman.2023.118159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/24/2023] [Accepted: 05/10/2023] [Indexed: 05/21/2023]
Abstract
Eutrophication is one of the major emerging challenges in aquatic environment. Industrial facilities, including food, textile, leather, and paper, generate a significant amount of wastewater during their manufacturing process. Discharge of nutrient-rich industrial effluent into aquatic systems causes eutrophication, eventually disturbs the aquatic system. On the other hand, algae provide a sustainable approach to treat wastewater, while the resultant biomass may be used to produce biofuel and other valuable products such as biofertilizers. This review aims to provide new insight into the application of algal bloom biomass for biogas and biofertilizer production. The literature review suggests that algae can treat all types of wastewater (high strength, low strength, and industrial). However, algal growth and remediation potential mainly depend on growth media composition and operation conditions such as light intensity, wavelength, light/dark cycle, temperature, pH, and mixing. Further, the open pond raceways are cost-effective compared to closed photobioreactors, thus commercially applied for biomass generation. Additionally, converting wastewater-grown algal biomass into methane-rich biogas through anaerobic digestion seems appealing. Environmental factors such as substrate, inoculum-to-substrate ratio, pH, temperature, organic loading rate, hydraulic retention time, and carbon/nitrogen ratio significantly impact the anaerobic digestion process and biogas production. Overall, further pilot-scale studies are required to warrant the real-world applicability of the closed-loop phycoremediation coupled biofuel production technology.
Collapse
Affiliation(s)
- Mamta Bhandari
- Environment and Biofuel Research Lab (EBRL), Department of Hydro and Renewable Energy, Indian Institute of Technology (IIT) Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Pushpendar Kumar
- Applied Microbiology Lab (AML), Centre for Rural Development and Technology, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, 110016, India.
| | - Pankaj Bhatt
- Department of Agricultural & Biological Engineering, Purdue University, W. Lafayette, IN, USA
| | - Halis Simsek
- Department of Agricultural & Biological Engineering, Purdue University, W. Lafayette, IN, USA
| | - Ravindra Kumar
- Department of Physics, Janta Vedic Mahavidyalaya, Baraut (Baghpat), UP, 250611, India
| | - Aman Chaudhary
- Environment and Biofuel Research Lab (EBRL), Department of Hydro and Renewable Energy, Indian Institute of Technology (IIT) Roorkee, Roorkee, Uttarakhand, 247667, India
| | - Anushree Malik
- Applied Microbiology Lab (AML), Centre for Rural Development and Technology, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, 110016, India
| | - Sanjeev Kumar Prajapati
- Environment and Biofuel Research Lab (EBRL), Department of Hydro and Renewable Energy, Indian Institute of Technology (IIT) Roorkee, Roorkee, Uttarakhand, 247667, India.
| |
Collapse
|
3
|
Ranganathan P, Pandey AK, Sirohi R, Tuan Hoang A, Kim SH. Recent advances in computational fluid dynamics (CFD) modelling of photobioreactors: Design and applications. BIORESOURCE TECHNOLOGY 2022; 350:126920. [PMID: 35240273 DOI: 10.1016/j.biortech.2022.126920] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/24/2022] [Accepted: 02/25/2022] [Indexed: 06/14/2023]
Abstract
The development of photobioreactor is important for sustainable production of renewable fuels, wastewater treatment and CO2 fixation. For the design and scale-up of a photobioreactor, CFD can be used as an indispensable tool. The present study reviews the recent status of computational flow modelling of various types of photobioreactors, involving fluid dynamics, light transport, and algal growth kinetics. An integrated modelling approach of hydrodynamics, light intensity, mass transfer, and biokinetics in photobioreactor is discussed further. Also, this reviews intensified system to improve the mixing, and light intensity of photobioreactors. Finally, the prospects and challenges of CFD modelling in photobioreactors are discussed. Multi-scale modelling approach and development of low-cost efficient computational framework are the areas to be considered for modelling of photobioreactor in near future. In addition, it is necessary to use process intensification techniques for photobioreactors for improving their hydrodynamics, mixing and mass transfer performances, and algal growth productivity.
Collapse
Affiliation(s)
| | - Ashutosh Kumar Pandey
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea; Centre for Energy and Environmental Sustainability, Lucknow-226 029, Uttar Pradesh, India
| | - Ranjna Sirohi
- Centre for Energy and Environmental Sustainability, Lucknow-226 029, Uttar Pradesh, India; Department of Chemical & Biological Engineering, Korea University, Seoul 136713, Republic of Korea
| | - Anh Tuan Hoang
- Institute of Engineering, HUTECH University, Ho Chi Minh city, Vietnam
| | - Sang-Hyoun Kim
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea.
| |
Collapse
|