The Experts below are selected from a list of 5121 Experts worldwide ranked by ideXlab platform
Navid R. Moheimani - One of the best experts on this subject based on the ideXlab platform.
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Tetraselmis suecica culture for CO2 bioremediation of untreated flue gas from a coal-fired power station
Journal of Applied Phycology, 2016Co-Authors: Navid R. MoheimaniAbstract:The accumulation of atmospheric CO2, primarily due to combustion of fossil fuels, has been implicated in potential global climate change. The high rate of CO2 bioremediation by microalgae has emerged as a favourable method for reducing coal-fired power plant emissions. However, coal-fired power station flue gas contains other chemicals such as SOx which can inhibit microalgal growth. In the current study, the effect of untreated flue gas as a source of inorganic carbon on the growth of Tetraselmis in a 1000 L industrial-scale split-cylinder internal-loop airlift photobioreactor was examined. The culture medium was recycled after each harvest. Tetraselmis suecica grew very well in this airlift photobioreactor during the 7-month experiment using recycled medium from an electroflocculation harvesting unit. Increased medium SO42− concentration as high as 870 mg SO42− L−1 due to flue gas addition and media recycling had no negative effect on the overall growth and productivity of this alga. The potential organic biomass productivity and carbon sequestration using an industrial-scale airlift PBR at International Power Hazelwood, Gippsland, Victoria, Australia, are 178.9 ± 30 mg L−1 day−1 and 89.15 ± 20 mg ‘C’ L−1 day−1, respectively. This study clearly indicates the potential of growing Tetraselmis on untreated flue gas and using recycled medium for the purpose of biofuel and CO2 bioremediation.
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Tetraselmis suecica culture for CO_2 bioremediation of untreated flue gas from a coal-fired power station
Journal of Applied Phycology, 2016Co-Authors: Navid R. MoheimaniAbstract:The accumulation of atmospheric CO_2, primarily due to combustion of fossil fuels, has been implicated in potential global climate change. The high rate of CO_2 bioremediation by microalgae has emerged as a favourable method for reducing coal-fired power plant emissions. However, coal-fired power station flue gas contains other chemicals such as SO_x which can inhibit microalgal growth. In the current study, the effect of untreated flue gas as a source of inorganic carbon on the growth of Tetraselmis in a 1000 L industrial-scale split-cylinder internal-loop airlift photobioreactor was examined. The culture medium was recycled after each harvest. Tetraselmis suecica grew very well in this airlift photobioreactor during the 7-month experiment using recycled medium from an electroflocculation harvesting unit. Increased medium SO_4 ^2− concentration as high as 870 mg SO_4 ^2− L^−1 due to flue gas addition and media recycling had no negative effect on the overall growth and productivity of this alga. The potential organic biomass productivity and carbon sequestration using an industrial-scale airlift PBR at International Power Hazelwood, Gippsland, Victoria, Australia, are 178.9 ± 30 mg L^−1 day^−1 and 89.15 ± 20 mg ‘C’ L^−1 day^−1, respectively. This study clearly indicates the potential of growing Tetraselmis on untreated flue gas and using recycled medium for the purpose of biofuel and CO_2 bioremediation.
Azizah Endut - One of the best experts on this subject based on the ideXlab platform.
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effects of different salinities and ph on the growth and proximate composition of nannochloropsis sp and Tetraselmis sp isolated from south china sea cultured under control and natural condition
International Biodeterioration & Biodegradation, 2014Co-Authors: Helena Khatoon, Norazira Abdu Rahman, Sanjoy Banerjee, Nazurah Harun, Siti Suhada Suleiman, Nur Hazwani Zakaria, Fathurrahman Lananan, Siti Hajar Abdul Hamid, Azizah EndutAbstract:Nannochloropsis sp. and Tetraselmis sp. are widely used in aquaculture as a source of protein, lipid and carbohydrate. The growth and proximate composition of microalgae could be affected by different culture conditions especially salinity, temperature and light. Thus, this study was aimed to compare the growth and proximate composition of Nannochloropsis sp. and Tetraselmis sp. cultured in different salinities and pH under different culture conditions. In this study Nannochloropsis sp. and Tetraselmis sp. were isolated from South China Sea and cultured at different salinities of 20, 30 and 40 ppt and different pH of 5.5, 7.5, 8.5 and 9.5 under natural and control condition until stationary phase. Results showed that Nannochloropsis sp. and Tetraselmis sp. had significantly higher (p < 0.05) cell density, lipid and carbohydrate content under control condition at 30 ppt. However, protein content was significantly higher (p < 0.05) in Nannochloropsis sp. when cultured under natural condition at 30 ppt. High cell density, protein, lipid and carbohydrate content was obtained when cultured at pH 7.5 and 8.5 for both species. The output of this study could be considered for Nannochloropsis sp. and Tetraselmis sp. cultivation to provide appropriate levels of protein, lipid and carbohydrate as feed supplement for aquaculture organisms.
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Effects of different salinities and pH on the growth and proximate composition of Nannochloropsis sp. and Tetraselmis sp. isolated from South China Sea cultured under control and natural condition
International Biodeterioration & Biodegradation, 2014Co-Authors: Helena Khatoon, Norazira Abdu Rahman, Sanjoy Banerjee, Nazurah Harun, Siti Suhada Suleiman, Nur Hazwani Zakaria, Fathurrahman Lananan, Siti Hajar Abdul Hamid, Azizah EndutAbstract:Nannochloropsis sp. and Tetraselmis sp. are widely used in aquaculture as a source of protein, lipid and carbohydrate. The growth and proximate composition of microalgae could be affected by different culture conditions especially salinity, temperature and light. Thus, this study was aimed to compare the growth and proximate composition of Nannochloropsis sp. and Tetraselmis sp. cultured in different salinities and pH under different culture conditions. In this study Nannochloropsis sp. and Tetraselmis sp. were isolated from South China Sea and cultured at different salinities of 20, 30 and 40 ppt and different pH of 5.5, 7.5, 8.5 and 9.5 under natural and control condition until stationary phase. Results showed that Nannochloropsis sp. and Tetraselmis sp. had significantly higher (p
John A. Diemar - One of the best experts on this subject based on the ideXlab platform.
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The evaluation of twelve algal species as food for juvenile Sydney rock oysters Saccostrea commercialis (Iredale & Roughley)
Aquaculture, 1992Co-Authors: Wayne A. O'connor, John A. Nell, John A. DiemarAbstract:Juvenile Sydney rock oysters (Saccostrea commercialis) were fed diets composed of either one of twelve algal species or one of eleven algal species in combination with Skeletonema costatum. When used as the sole diet for 21 days, the diatoms Skeletonema costatum, Chaetoceros calcitrans. Chaetoceros gracilis and Thalassiosira pseudonana produced the greatest live weight increase in spat. When Skeletonema costatum was fed in combination with the remaining eleven algal species for 19 days, diets including Chaetoceros gracilis, Tetraselmis chui and Tetraselmis suecica produced the highest live weight increases. These findings indicated differences in the food value of several algal species to larvae and spat of the Sydney rock oyster.
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the evaluation of twelve algal species as food for juvenile sydney rock oysters saccostrea commercialis iredale roughley
Aquaculture, 1992Co-Authors: Wayne A Oconnor, John A. Nell, John A. DiemarAbstract:Juvenile Sydney rock oysters (Saccostrea commercialis) were fed diets composed of either one of twelve algal species or one of eleven algal species in combination with Skeletonema costatum. When used as the sole diet for 21 days, the diatoms Skeletonema costatum, Chaetoceros calcitrans. Chaetoceros gracilis and Thalassiosira pseudonana produced the greatest live weight increase in spat. When Skeletonema costatum was fed in combination with the remaining eleven algal species for 19 days, diets including Chaetoceros gracilis, Tetraselmis chui and Tetraselmis suecica produced the highest live weight increases. These findings indicated differences in the food value of several algal species to larvae and spat of the Sydney rock oyster.
Helena Khatoon - One of the best experts on this subject based on the ideXlab platform.
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effects of different salinities and ph on the growth and proximate composition of nannochloropsis sp and Tetraselmis sp isolated from south china sea cultured under control and natural condition
International Biodeterioration & Biodegradation, 2014Co-Authors: Helena Khatoon, Norazira Abdu Rahman, Sanjoy Banerjee, Nazurah Harun, Siti Suhada Suleiman, Nur Hazwani Zakaria, Fathurrahman Lananan, Siti Hajar Abdul Hamid, Azizah EndutAbstract:Nannochloropsis sp. and Tetraselmis sp. are widely used in aquaculture as a source of protein, lipid and carbohydrate. The growth and proximate composition of microalgae could be affected by different culture conditions especially salinity, temperature and light. Thus, this study was aimed to compare the growth and proximate composition of Nannochloropsis sp. and Tetraselmis sp. cultured in different salinities and pH under different culture conditions. In this study Nannochloropsis sp. and Tetraselmis sp. were isolated from South China Sea and cultured at different salinities of 20, 30 and 40 ppt and different pH of 5.5, 7.5, 8.5 and 9.5 under natural and control condition until stationary phase. Results showed that Nannochloropsis sp. and Tetraselmis sp. had significantly higher (p < 0.05) cell density, lipid and carbohydrate content under control condition at 30 ppt. However, protein content was significantly higher (p < 0.05) in Nannochloropsis sp. when cultured under natural condition at 30 ppt. High cell density, protein, lipid and carbohydrate content was obtained when cultured at pH 7.5 and 8.5 for both species. The output of this study could be considered for Nannochloropsis sp. and Tetraselmis sp. cultivation to provide appropriate levels of protein, lipid and carbohydrate as feed supplement for aquaculture organisms.
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Effects of different salinities and pH on the growth and proximate composition of Nannochloropsis sp. and Tetraselmis sp. isolated from South China Sea cultured under control and natural condition
International Biodeterioration & Biodegradation, 2014Co-Authors: Helena Khatoon, Norazira Abdu Rahman, Sanjoy Banerjee, Nazurah Harun, Siti Suhada Suleiman, Nur Hazwani Zakaria, Fathurrahman Lananan, Siti Hajar Abdul Hamid, Azizah EndutAbstract:Nannochloropsis sp. and Tetraselmis sp. are widely used in aquaculture as a source of protein, lipid and carbohydrate. The growth and proximate composition of microalgae could be affected by different culture conditions especially salinity, temperature and light. Thus, this study was aimed to compare the growth and proximate composition of Nannochloropsis sp. and Tetraselmis sp. cultured in different salinities and pH under different culture conditions. In this study Nannochloropsis sp. and Tetraselmis sp. were isolated from South China Sea and cultured at different salinities of 20, 30 and 40 ppt and different pH of 5.5, 7.5, 8.5 and 9.5 under natural and control condition until stationary phase. Results showed that Nannochloropsis sp. and Tetraselmis sp. had significantly higher (p
Hareb Mohammed S.j. Al-jabri - One of the best experts on this subject based on the ideXlab platform.
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A feasibility study of utilizing hydrothermal liquefaction derived aqueous phase as nutrients for semi-continuous cultivation of Tetraselmis sp.
Bioresource technology, 2019Co-Authors: Probir Das, Mahmoud Thaher, Mohammad Abdulquadir, Shoyeb Khan, Afeefa Kiran Chaudhary, Hareb Mohammed S.j. Al-jabriAbstract:Abstract The feasibility of substituting 50% nutrients by aqueous phase liquid (APL), derived from hydrothermal liquefaction of Tetraselmis sp. biomass, in a semi-continuous cultivation of Tetraselmis sp. was studied. Growth experiments were conducted in indoor photobioreactor and outdoor raceway tank for three consecutive cycles. At the end of exponential growth pahse, 75% of the culture was harvested, and the supernatant was returned to the cultivation system. For control cultures, fresh nutrients were added; however, for the experimental cultures, an appropriate volume of APL was added to replace half of the nutrients. Either indoor or outdoor, the growth rate and biomass yield in APL-added cultures were either equal or slightly better compared to control culture; although APL had little to no effect on the metabolite content of Tetraselmis sp., metabolites profile of Tetraselmis sp. varied between APL-added and control cultures. Nevertheless, 50% nutrients requirements for microalgae cultivation could be replaced by APL.
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Potential of novel desert microalgae and cyanobacteria for commercial applications and CO_2 sequestration
Journal of Applied Phycology, 2019Co-Authors: Kira Schipper, Mariam Al Muraikhi, Touria Bounnit, Rihab Rasheed, Tasneem Dalgamouni, Hareb Mohammed S.j. Al-jabri, Ghamza Saed H.s. Alghasal, René H. Wijffels, Ime Saadaoui, Maria J BarbosaAbstract:CO_2 fixation by phototrophic microalgae and cyanobacteria is seen as a possible global carbon emissions reducer; however, novel microalgae and cyanobacterial strains with tolerance to elevated temperatures and CO_2 concentrations are essential for further development of algae-based carbon capture. Four novel strains isolated from the Arabian Gulf were investigated for their thermotolerance and CO_2-tolerance, as well as their carbon capture capability. Two strains, Leptolyngbya sp. and Picochlorum sp., grew well at 40 °C, with productivities of 106.6 ± 10.0 and 87.5 ± 2.1 mg biomass L^−1 d^−1, respectively. Tetraselmis sp. isolate showed the highest biomass productivity and carbon capture rate of 157.7 ± 10.3 mg biomass L^−1 d^−1 and 270.8 ± 23.9 mg CO_2 L^−1 d^−1, respectively, both at 30 °C. Under 20% CO_2, the biomass productivity increased over 2-fold for both Tetraselmis and Picochlorum isolates, to 333.8 ± 41.1 and 244.7 ± 29.5 mg biomass L^−1 d^−1. These two isolates also presented significant amounts of lipids, up to 25.6 ± 0.9% and 28.0 ± 2.0% ( w / w ), as well as presence of EPA and DHA. Picochlorum sp. was found to have a suitable FAME profile for biodiesel production. Both Tetraselmis and Picochlorum isolates showed promising characteristics, making them valuable strains for further investigation towards commercial applications and CO_2 capture.
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Optimization of iron dosage for microalgal biomass production as a feedstock for biofuel
Biofuels, 2019Co-Authors: Mahmoud Thaher, Mohammed Abdul Quadir Mohd Abdul Hakim, Hareb Mohammed S.j. Al-jabri, Ghamza Saed H.s. AlghasalAbstract:Biomass and metabolite production of three marine (Tetraselmis sp., Nannochloropsis sp., Chlorocystis sp.) and three freshwater microalgae (Scenedesmus sp., Chlorella sp., Monoraphidium sp.) were s...
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Long-term semi-continuous cultivation of a halo-tolerant Tetraselmis sp. using recycled growth media.
Bioresource technology, 2018Co-Authors: Probir Das, Mahmoud Thaher, Mohammad Abdulquadir, Shoyeb Khan, Afeefa Kiran Chaudhary, Hareb Mohammed S.j. Al-jabriAbstract:Abstract In this study, a halotolerant Tetraselmis sp. was selected for 11-month outdoor semi-continuous cultivation in one sq. m raceway tank in the Qatari desert. A fraction of the culture was harvested using ferric chloride, and the growth media was returned to the tank. The recycling of culture media continued till the culture salinity reached 8% NaCl; 90% culture was then harvested, and the remaining culture fraction was used as inoculum for a new cultivation cycle. The growth of Tetraselmis sp. was not affected by incremental salinity although the intracellular metabolites varied; the average biomass productivity was 17.8 g/m2/d. Harvesting efficiency was slightly affected by the increase in salinity. Iron content in the harvested biomass was in the range of 1.5–3.3%, and acidic solution (pH = 1.48) was able to recover 91.3% iron from the harvested biomass. Nonetheless, Tetraselmis sp. could be grown continuously throughout the year in Qatar’s climate condition.
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A comparative study of the growth of Tetraselmis sp. in large scale fixed depth and decreasing depth raceway ponds.
Bioresource technology, 2016Co-Authors: Probir Das, Mahmoud Thaher, Mohammed Abdul Quadir Mohd Abdul Hakim, Hareb Mohammed S.j. Al-jabri, Ghamza Saed H.s. AlghasalAbstract:In this study, an alternative approach was proposed where excess seawater would be added only during inoculation (DD) rather than daily addition (FD). Growth and metabolite contents of Tetraselmis sp. weren't affected for daily increase of 2% NaCl salinity. Tetraselmis sp. was then cultured in DD and FD pond. In DD pond, initial culture depth was 23.5cm and its depth reduced as no water was added; for FD pond, everyday sterilized seawater was added to maintain 20cm depth. DD pond had higher biomass productivity compared to FD pond, until DD pond was deeper than FD pond; metabolite content and FAME profile of Tetraselmis sp. were also similar in both cultures. Therefore, considering the simplicity in operation, halo tolerant microalgae can be grown in DD pond method.
