Utilisation of tris(hydroxymethyl)aminomethane as a gas carrier in microalgal cultivation to enhance CO2utilisation and biomass production

RSC Advances ◽  
2016 ◽  
Vol 6 (4) ◽  
pp. 2703-2711 ◽  
Author(s):  
Zhong-Liang Sun ◽  
Sheng-Zhang Xue ◽  
Cheng-hu Yan ◽  
Wei Cong ◽  
De-Zhu Kong
Keyword(s):  
Carbon Source ◽  
Biomass Production ◽  
Flue Gases ◽  
Limiting Factor ◽  
Microalgal Cultivation ◽  
Culture Systems ◽  
Microalgal Culture

CO2supplementation is usually a limiting factor in microalgal culture systems, especially when flue gases are used as the carbon source.

scholarly journals Mutants affecting histidine utilization inAspergillus nidulans

1975 ◽  
Vol 25 (2) ◽  
pp. 119-135 ◽  
Author(s):  
Meryl Polkinghorne ◽  
M. J. Hynes
Keyword(s):  
Carbon Source ◽  
Nitrogen Source ◽  
Sole Carbon Source ◽  
Nitrogen Sources ◽  
Limiting Factor ◽  
Sole Nitrogen Source ◽  
Wild Type ◽  
Exogenous Substrate ◽  
Growth Properties ◽  
Type Strains

SUMMARYWild-type strains ofAspergillus nidulansgrow poorly onL-histidine as a sole nitrogen source. The synthesis of the enzyme histidase (EC. 4.3.1.3) appears to be a limiting factor in the growth of the wild type, as strains carrying the mutantareA102 allele have elevated histidase levels and grow strongly on histidine as a sole nitrogen source.L-Histidine is an extremely weak sole carbon source for all strains.Ammonium repression has an important role in the regulation of histidase synthesis and the relief of ammonium repression is dependent on the availability of a good carbon source. The level of histidase synthesis does not respond to the addition of exogenous substrate.Mutants carrying lesions in thesarA orsarB loci (suppressor ofareA102) have been isolated. The growth properties of these mutants on histidine as a sole nitrogen source correlate with the levels of histidase synthesized. Mutation at thesarA andsarB loci also reduces the utilization of a number of other nitrogen sources. The data suggest that these two genes may code for regulatory products involved in nitrogen catabolism. No histidase structural gene mutants were identified and possible explanations of this are discussed.

Denitrification with corncob as carbon source and biofilm carriers

2012 ◽  
Vol 65 (7) ◽  
pp. 1238-1243 ◽  
Author(s):  
Guochao Li ◽  
Jie Chen ◽  
Tao Yang ◽  
Jianqi Sun ◽  
Shenglu Yu
Keyword(s):  
Reaction Time ◽  
Carbon Source ◽  
Nitrate Nitrogen ◽  
Batch Reactor ◽  
Oxygen Demand ◽  
Limiting Factor ◽  
Nitrate N ◽  
Biofilm Carrier ◽  
Laboratory Reactor ◽  
Control Batch

In this research the agricultural by-product corncob was investigated as a carbon source as well as a biofilm carrier to remove organic matter, expressed as chemical oxygen demand (COD) and nitrate nitrogen (nitrate-N), from wastewater in a batch laboratory reactor. The performance of a reactor with corncob as the carbon source and the biofilm carrier was compared with a control batch reactor with suspended plastic carriers and glucose as the sole carbon source. With 60 vol% of corncob carriers inside the reactor, a soluble COD/N ratio of 4.2 g COD g N−1 was enough for total denitrification, nearly half of the control reactor (9.5 g COD g N−1), at 23 h reaction time. The specific denitrification rate decreased with increasing soluble COD consumption for both reactors. Nitrate and COD removal efficiencies decreased with shorter retention times, with accentuated effects in the reactor. This study suggested corncob as a feasible carbon source and that reaction time was a limiting factor with corncob used as the carbon source for denitrification.

scholarly journals Scaling-up sustainable Chlorella vulgaris microalgal biomass cultivation from laboratory to pilot-plant photobioreactor, towards biofuel

2018 ◽  
Vol 21 (1) ◽  
pp. 37-42 ◽  
Keyword(s):  
Chlorella Vulgaris ◽  
Pilot Plant ◽  
Specific Growth ◽  
Scaling Up ◽  
Microalgal Biomass ◽  
Microalgal Cultivation ◽  
The Poor ◽  
Microalgal Culture ◽  
Mode Of Operation ◽  
Specific Growth Factor

<p>Unicellular microalgal culture represents a new opportunity for producing significant biofuel quantities in the future along with other specialty products, due to several major advantages microalgae species present when compared to conventional crops, including much faster growth rates, cultivation in a variety of environments and photobioreactor systems, and almost 100% recycling of nutrients. In the current research, the scaling-up of the cultivation of Chlorella vulgaris microalgae to a 4 m3 pilot-plant photobioreactor is examined, compared to the performance of a 25 L automated laboratory bioreactor. Beyond the size and configuration, the main differences of the two bioreactors are the mode of operation, the illumination nature and depth, the temperature, and pH. Specifically, temperature and illumination are naturally varying from day to day and season to season into the pilot-plant photobioreactor that is set inside a greenhouse. The specific growth factor appears to be higher for microalgal cultivation in the laboratory bioreactor. It is also found that the growth kinetics is severely slowed down during the winter months. This is primarily due to the low temperatures and the poor illumination observed during winter.</p>

scholarly journals Utilization of fruit peels as carbon source for white rot fungi biomass production under submerged state bioconversion

2016 ◽  
Vol 28 (2) ◽  
pp. 143-151 ◽  
Author(s):  
Olorunnisola Kola Saheed ◽  
Parveen Jamal ◽  
Mohammed Ismail Abdul Karim ◽  
Md. Zahangir Alam ◽  
Suleyman Aremu Muyibi
Keyword(s):  
Carbon Source ◽  
Biomass Production ◽  
White Rot Fungi ◽  
White Rot

Root morphological plasticity and biomass production of two Chinese fir clones with high phosphorus efficiency under low phosphorus stress

2011 ◽  
Vol 41 (2) ◽  
pp. 228-234 ◽  
Author(s):  
Pengfei Wu ◽  
Xiangqing Ma ◽  
Mulualem Tigabu ◽  
Chen Wang ◽  
Aiqin Liu ◽  
...  
Keyword(s):  
Biomass Production ◽  
Morphological Traits ◽  
Southern China ◽  
Chinese Fir ◽  
Phosphorus Efficiency ◽  
Sand Culture ◽  
Root Surface Area ◽  
Limiting Factor ◽  
P Deficiency ◽  
P Supply

Available P is the major growth-limiting factor in southern China where Chinese fir ( Cunninghamia lanceolata (Lamb.) Hook.) plantations are increasingly established. Planting P-efficient clones is a viable option to enhance productivity of Chinese fir plantations. Two Chinese fir clones with high P efficiency (M1 and M4) were chosen as the research materials and their adaptive responses to low P stress were examined. The increment in root morphological traits and biomass production of these clones was measured by a sand culture experiment with a heterogeneous P supply. For both clones, P starvation resulted in significantly higher root surface area and root volume but not root length. For clone M4, the mean root diameter was also larger under P deficiency than under normal P supply. Interestingly, the root morphological traits varied substantially within the same root system where the starved roots had higher values for all morphological traits than the nonstarved ones. Phosphorus starvation did not affect shoot and root biomass or the root to shoot ratio, but the whole-plant biomass increment was large under P deficiency for clone M4. In conclusion, the adaptation to low P stress in these clones is attributed to increased P acquisition and utilization efficiencies.

scholarly journals Improvement of biomass production by Lactobacillus reuteri using double-carbon source cultivation strategy

2021 ◽  
Author(s):  
Shanmugaprakasham Selvamani ◽  
Roslinda Abd Malek ◽  
Solleh Ramli ◽  
Daniel Joe Dailin ◽  
Vijai Kumar Gupta ◽  
...  
Keyword(s):  
Carbon Source ◽  
Biomass Production ◽  
Lactobacillus Reuteri ◽  
Cultivation Strategy

scholarly journals Effect of Nutrients on Biomass Production of Helminthosporium Tetramera A Leaf Spot Pathogen of Sugarcane (Saccharum Officinarum)

2021 ◽  
Vol 04 (05) ◽  
Author(s):  
Dr. Abhijeet Bajeerao Pawar ◽  
Keyword(s):  
Carbon Source ◽  
Liquid Medium ◽  
Biomass Production ◽  
Leaf Spot ◽  
Saccharum Officinarum ◽  
Cobalt Nitrate ◽  
Barium Nitrate ◽  
Mycelial Biomass ◽  
Growth Variation ◽  
And Control

Abstract : Helminthosporium tetramera was a pathogen of Saccharum Officinarum, was isolated from diseased Saccharum Officinarum, leaves from Nashik district and used for the present study. Pathogen was grown on the Czapek-Dox liquid medium substituting or adding different carbon, nitrogen to study biomass production. The growth as dry mycelial biomass was observed on the 8th day of incubation period. A grate extent of growth variation was observed on different carbon, nitrogen. Among the carbon source, fructose shows maximum biomass while glucose with minimum biomass. From nitrogen source cobalt nitrate and barium nitrate shows maximum and control condition with minimum biomass was recorded.

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