The production of H2 was studied using a packed bed reactor with polyurethane foam acting as support material. Experiments were performed using mixed microflora under non sterile conditions. The system was initially operated with synthetic wastewater as the sole substrate. Subsequently, cheese whey permeate was added to the system at varying organic loading rates (OLR). The performance of the reactor was evaluated by applying a continuous decrease in OLR. As a result, a significant decrease in H2 yields (HY) was observed with the decrease in OLR from 18.8 to 6.3 g chemical oxygen demand (COD)/L d. Microbial analysis demonstrated that the prevalence of non-hydrogen producers, Sporolactobacillus sp. and Prevotella, was the main reason for low HYs obtained. This behavior indicates that the fermentation under non-sterile conditions was favored by high concentrations of substrate by creating an adverse environment for nonhydrogen producer organisms.
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http://dx.doi.org/10.1080/10934529.2013.838885 | DOI Listing |
Sci Rep
January 2025
Department of Nuclear and Renewable Energy Sources, Ural Federal University, Yekaterinburg, 620002, Russia.
The present investigation assessed the viability of utilizing a powdered clam shell in continuous adsorption to eliminate nickel ions from simulated wastewater. The breakthrough curves (BTC) were analyzed by altering the Q (inlet flow rate) in a glass column (ID 5 cm, H 35 cm) with a multi-port and filled with the powdered clamshell adsorbent (PCSA). The PCSA's nickel adsorption efficiency was maximum (87.
View Article and Find Full Text PDFEnviron Sci Technol
January 2025
Zhejiang Key Laboratory of Clean Energy Conversion and Utilization, Science and Education Integration College of Energy and Carbon Neutralization, Zhejiang University of Technology, Hangzhou 310014, China.
J Chromatogr A
December 2024
Biopharm Drug Substance Development, GSK, King of Prussia, PA 19406, US.
PLoS One
December 2024
UCL Institute of Ophthalmology, London, United Kingdom.
Photoreceptors (PRs) are metabolically demanding and packed at high density, which presents a challenge for nutrient exchange between the associated vascular beds and the tissue. Motivated by the ambition to understand the constraints under which PRs function, in this study we have drawn together diverse physiological and anatomical data in order to generate estimates of the rates of ATP production per mm2 of retinal surface area. With the predictions of metabolic demand in the companion paper, we seek to develop an integrated energy budget for the outer retina.
View Article and Find Full Text PDFJ Colloid Interface Sci
December 2024
College of Electrical and Information Engineering, Hunan University, Changsha 410082, China.
Ammonia is a promising alternative energy to fossil fuels for reducing CO emissions. Plasma catalysis technology for ammonia production using clean energy is gaining attention. Introducing catalysts to the plasma increases ammonia synthesis rates, but the effect of catalyst particle movement in the plasma region, such as in a fluidized-bed reactor, is less explored.
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