Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Sheldon J.B. Duff"'
Publikováno v:
PeerJ, Vol 2, p e402 (2014)
The cost of enzymes makes enzymatic hydrolysis one of the most expensive steps in the production of lignocellulosic ethanol. Diverse studies have used commercial enzyme cocktails assuming that change in total protein concentration during hydrolysis w
Externí odkaz:
https://doaj.org/article/d6764bb78f174eaea537d1db17d184da
Autor:
Xiaotao Bi, Di Li, David Kuan, Swati Yewalkar, Tong Wu, Sheldon J.B. Duff, Andrew Johnson, Dusko Posarac, Heli Wang
Publikováno v:
Waste Disposal & Sustainable Energy. 1:199-206
Microalgae can be cultivated for producing high-valued products through the production of enzymes to offset the cost of CO2 sequestration, providing financial incentives. The viability of algae in the photobioreactor needs to be monitored to ensure b
Publikováno v:
ACS Sustainable Chemistry & Engineering. 5:9701-9708
Enzyme recycling by adsorption from supernatant to fresh substrate is a promising strategy to reduce enzyme expenses and the production cost of lignocellulosic ethanol. The study was performed using oxygen-delignified wheat straw, and the effect of l
Publikováno v:
The Canadian Journal of Chemical Engineering. 93:640-647
This study explored the effects of the major growth parameters for Synechococcus elongatus PCC7942 for the purpose of maximizing cell growth. Preliminary studies in shake flasks revealed that an optimization of components in BG-11 growth medium resul
Autor:
Jan-Hendrik Hehemann, Dusko Posarac, Heli Wang, Swati Yewalkar, Francis E. Nano, Xiaotao Bi, Layne A. Woodfin, Sheldon J.B. Duff, Di Li, Sheila Potter
Publikováno v:
Frontiers of Environmental Science & Engineering. 11
The gene for the catalytic domain of thermostable endo-β-1,3-glucanase (laminarinase) LamA was cloned from Thermotoga maritima MSB8 and heterologously expressed in a bioengineered Synechococcus sp. PCC 7002. The mutant strain was cultured in a photo
Publikováno v:
Energy & Fuels. 25:1900-1905
Discharge of process water into tailings ponds is associated with many mining operations, including that of bitumen. These tailings ponds can be used to grow organisms, such as algae, which, in turn, fix CO2 and degrade unwanted dissolved components.
Autor:
Sheldon J.B. Duff, Jacky K.S. Chan
Publikováno v:
Bioresource Technology. 101:3755-3759
Levoglucosan (1,6-anhydro-beta-d-glucopyranose) and other anhydrosugars can be produced in significant quantities during fast pyrolysis of lignocellulosic material. Levoglucosan can be extracted and hydrolyzed to produce fermentable glucose, however
Publikováno v:
Journal of Environmental Engineering and Science. 7:327-333
Runoff is generated at log yards when precipitation comes into contact with logs, wood debris, and equipment at outdoor wood processing, sorting and storage facilities. Log yard runoff, which can be toxic and have high levels of biochemical oxygen de
Publikováno v:
Enzyme and Microbial Technology. 42:259-264
The hemicellulose-derived sugars in spent sulfite liquor (SSL), a process stream of the sulfite pulping process, may be fermented to ethanol. Low nutrient concentration, the presence of inhibitors, and a large proportion of xylose limit fermentation
Publikováno v:
Ecological Engineering. 31:132-139
Microbial degradation is the major mechanism for removal of organic carbon from woodwaste leachate in surface flow constructed wetlands. To explore the relations of microbial biomass and heterotrophic production with hydraulic and organic loading rat