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We assessed the microbiological reduction of carbon dioxide into methane bioenergy through biochemical reaction by addition of zero valent iron (ZVI) as an alternative electron donor in oil reservoir production waters under strictly anaerobic conditions. Enhanced methane production was observed in all the treatments amended with ZVI compared with the controls. The outcome of the microbial community...
The article presents a model and a simulation study of a new type of hydrokinetic accumulator with increased energy storage density. The basic elements of the accumulator are: a flywheel of variable moment of inertia (due to inflow or outflow of hydraulic fluid) and a variable displacement pump/motor. The first part of the article describes the construction and operation principles of the developed...
In this paper, a structured retrofitting approach (SRA) to the near-optimal design of natural gas (NG) pressure reduction stations (PRSs) is presented. The SRA is designed by considering the waste energy recovery, system integration opportunities and long-term-based objectives to successfully address the entire PRS retrofitting process. The SRA is developed in four phases: pre-retrofit activities,...
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