Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Levi Straka"'
Autor:
McKenna Farmer, Fabrizio Sabba, Zhen Jia, Patrick Dunlap, James Barnard, Cindy Dongqi Qin, Levi Straka, Joseph A. Kozak, Leon Downing, George Wells
Publikováno v:
ACS ES&T Water.
Autor:
Bruce E. Rittmann, Levi Straka
Publikováno v:
Algal Research. 32:210-220
With changing light intensities, microalgae exhibit the inter-connected phenomena of photoacclimation, photodamage, and photodamage repair. Together they result in unique growth responses to changes in light intensity. In this work, we experimentally
Autor:
Levi Straka, Bruce E. Rittmann
Publikováno v:
Algal Research. 31:232-238
Microalgae naturally are exposed to changing light conditions. While a higher light intensity can promote a faster growth rate, it also can cause photodamage that leads to a temporary or semi-permanent decline in growth rate. We developed a model of
Publikováno v:
Algal Research. 30:94-100
The presence of heterotrophic bacteria in microalgal cultures can dilute the microalgal content of the harvested biomass, compete for nutrients, and be associated with culture crashes. Being able to detect and quantify heterotrophic bacteria would be
Autor:
Bruce E. Rittmann, Levi Straka
Publikováno v:
Biotechnology and Bioengineering. 115:507-511
The viability of large-scale microalgae cultivation depends on providing optimal growth conditions, for which a key operational parameter is culture density. Using Synechocystis sp. PCC 6803, we conducted a series of fixed-density, steady-state exper
Autor:
Levi Straka, Bruce E. Rittmann
Publikováno v:
Journal of Applied Phycology. 29:1877-1882
Microalgae biofuel production, a possible source of carbon-neutral energy, requires phosphorus (P), a limited resource. This study investigates the relationship between specific growth rate of the cyanobacterium Synechocystis sp. PCC 6803 and P avail
Autor:
Bruce E. Rittmann, Levi Straka
Publikováno v:
Algal Research. 21:223-226
An inherent complication in the relationship between light intensity (LI) and microalgae growth rate is that light attenuates through a culture due to its absorption by biomass. While a biomass's specific extinction coefficient (e describing how rapi
Publikováno v:
ISME J
Anaerobic ammonia-oxidizing (Anammox) bacteria (AnAOB) rely on nitrite supplied by ammonia-oxidizing bacteria (AOB) and archaea (AOA). Affinities for ammonia and oxygen play a crucial role in AOA/AOB competition and their association with AnAOB. In t
Autor:
Levi Straka, Bruce E. Rittmann
Publikováno v:
Biotechnology and bioengineering. 116(2)
In photobioreactors and natural systems, microalgae are subjected to rapidly changing light intensities (LI) due to light attenuation and mixing. A controlled way to study the effect of rapidly changing LI is to subject cultures to flashing light. In
Autor:
Mari Winkler, Levi Straka
Publikováno v:
Current opinion in biotechnology. 57
This review summarizes strategies for biological nitrogen removal (BNR) and recovery from wastewater. The most commonly used BNR technology nitrification/denitrification is also the most energy intensive, even though there are lower energy options, i