Production and enhancement of high value phycocyanin pigment from microalgae biofilms cultured on... more Production and enhancement of high value phycocyanin pigment from microalgae biofilms cultured on oilfield and natural gas produced wastewater were investigated. Cyanobacteria isolated from Logan City, Utah, wastewater treatment Lagoons (LLC2) was cultured in produced water using rotating algal biofilm reactors (RABRs). The RABRs were operated under “low” and “high” light conditions and biomass and phycocyanin content were compared. Phycocyanin content was enhanced by growth under low light conditions to a maximum yield of 31.7 mg/g ash-free dry weight (AFDW) biomass for an 87.6% increase in phycocyanin yield. Phycocyanin productivity was equivalent for both the low and high light treatments (327 ± 81 and 305 ± 39 mg/m2/day, respectively), due to the significantly lower AFDW biomass productivity of the low light treatment (2.7 ± 0.4 g/m2-day). An indoor laboratory evaluation of 14 substrata for biofilm growth showed that cotton rope and cotton belt material provided the highest biom...
About ASCE; About Civil Engineering; Donate Now; My ASCE; Shop ASCE. ASCE Join Now. Knowledge & L... more About ASCE; About Civil Engineering; Donate Now; My ASCE; Shop ASCE. ASCE Join Now. Knowledge & Learning: Books & Journals; CE Body of Knowledge; Certification; Codes & Standards; Conferences; Continuing Education; ...
... Slow Rate Sand Filtration Using a Zeolite Surface Amendment. by Daniel Rex McNair and Ronald ... more ... Slow Rate Sand Filtration Using a Zeolite Surface Amendment. by Daniel Rex McNair and Ronald C. Sims pp. 247-253 Purchase Information Permissions for Reuse Document type: Conference Proceeding Paper. Part of: Environmental Engineering (1986). ...
Abiotic interactions of pentachlorophenol (PCP) on manganese oxide surfaces were investigated to ... more Abiotic interactions of pentachlorophenol (PCP) on manganese oxide surfaces were investigated to determine the extent of transformation. The optimal pH and ratio of manganese oxide to PCP were determined. Sorption of PCP on manganese oxide surfaces was quantified at optimal conditions. The effectiveness of utilizing manganese oxide to remediate contaminated subsurface environments was investigated
Abstract A comprehensive field evaluation was conducted of a full-scale prepared bed bioreactor t... more Abstract A comprehensive field evaluation was conducted of a full-scale prepared bed bioreactor to assess performance and rate of treatment to achieve target cleanup levels. Three-dimensional sampling was conducted over a two-year period, and over 300 ...
Molecular oxygen is one of the strongest naturally occurring redox species. In subsurface environ... more Molecular oxygen is one of the strongest naturally occurring redox species. In subsurface environments, oxygen is quickly consumed by microorganisms and is slow to recharge. When oxygen becomes limiting, microorganisms must utilize alternative terminal electron acceptors to mediate growth. Iron and manganese have high redox potentials and are commonly found in the subsurface. Abiotic and microbially mediated reactions are potentially energetically favored by electron transport systems that utilize these metal species. Calculated free energy changes are used to show the potential use of iron and manganese as terminal electron acceptors in the transformation of pentachlorophenol in anaerobic environments. Microbial yields based on free energy liberated from pentachlorophenol transformation are estimated under iron and manganese reducing conditions using a simple bioenergetic growth model. Iron and manganese was extracted from aquifer solids obtained at a Superfund site and mixed with ...
Production and enhancement of high value phycocyanin pigment from microalgae biofilms cultured on... more Production and enhancement of high value phycocyanin pigment from microalgae biofilms cultured on oilfield and natural gas produced wastewater were investigated. Cyanobacteria isolated from Logan City, Utah, wastewater treatment Lagoons (LLC2) was cultured in produced water using rotating algal biofilm reactors (RABRs). The RABRs were operated under “low” and “high” light conditions and biomass and phycocyanin content were compared. Phycocyanin content was enhanced by growth under low light conditions to a maximum yield of 31.7 mg/g ash-free dry weight (AFDW) biomass for an 87.6% increase in phycocyanin yield. Phycocyanin productivity was equivalent for both the low and high light treatments (327 ± 81 and 305 ± 39 mg/m2/day, respectively), due to the significantly lower AFDW biomass productivity of the low light treatment (2.7 ± 0.4 g/m2-day). An indoor laboratory evaluation of 14 substrata for biofilm growth showed that cotton rope and cotton belt material provided the highest biom...
About ASCE; About Civil Engineering; Donate Now; My ASCE; Shop ASCE. ASCE Join Now. Knowledge & L... more About ASCE; About Civil Engineering; Donate Now; My ASCE; Shop ASCE. ASCE Join Now. Knowledge & Learning: Books & Journals; CE Body of Knowledge; Certification; Codes & Standards; Conferences; Continuing Education; ...
... Slow Rate Sand Filtration Using a Zeolite Surface Amendment. by Daniel Rex McNair and Ronald ... more ... Slow Rate Sand Filtration Using a Zeolite Surface Amendment. by Daniel Rex McNair and Ronald C. Sims pp. 247-253 Purchase Information Permissions for Reuse Document type: Conference Proceeding Paper. Part of: Environmental Engineering (1986). ...
Abiotic interactions of pentachlorophenol (PCP) on manganese oxide surfaces were investigated to ... more Abiotic interactions of pentachlorophenol (PCP) on manganese oxide surfaces were investigated to determine the extent of transformation. The optimal pH and ratio of manganese oxide to PCP were determined. Sorption of PCP on manganese oxide surfaces was quantified at optimal conditions. The effectiveness of utilizing manganese oxide to remediate contaminated subsurface environments was investigated
Abstract A comprehensive field evaluation was conducted of a full-scale prepared bed bioreactor t... more Abstract A comprehensive field evaluation was conducted of a full-scale prepared bed bioreactor to assess performance and rate of treatment to achieve target cleanup levels. Three-dimensional sampling was conducted over a two-year period, and over 300 ...
Molecular oxygen is one of the strongest naturally occurring redox species. In subsurface environ... more Molecular oxygen is one of the strongest naturally occurring redox species. In subsurface environments, oxygen is quickly consumed by microorganisms and is slow to recharge. When oxygen becomes limiting, microorganisms must utilize alternative terminal electron acceptors to mediate growth. Iron and manganese have high redox potentials and are commonly found in the subsurface. Abiotic and microbially mediated reactions are potentially energetically favored by electron transport systems that utilize these metal species. Calculated free energy changes are used to show the potential use of iron and manganese as terminal electron acceptors in the transformation of pentachlorophenol in anaerobic environments. Microbial yields based on free energy liberated from pentachlorophenol transformation are estimated under iron and manganese reducing conditions using a simple bioenergetic growth model. Iron and manganese was extracted from aquifer solids obtained at a Superfund site and mixed with ...
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