Wireless self-powered ammonia leakage monitor system developed for ammonia-energy ships
Due to its zero carbon, safe storage, and high energy density, liquid ammonia is a promising marine fuel in the shipping industry.
May 6, 2022
0
22
Engineering
Due to its zero carbon, safe storage, and high energy density, liquid ammonia is a promising marine fuel in the shipping industry.
May 6, 2022
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22
Energy & Green Tech
A new approach to battery design could provide the key to low-cost, long-term energy storage, according to Imperial College London researchers.
May 3, 2022
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583
Energy & Green Tech
The need for negative emissions technologies to address our climate crisis has become increasingly clear. At the rate that our planet is emitting carbon dioxide—adding about 50 gigatons every year—we will have to remove ...
Apr 21, 2022
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32
Energy & Green Tech
Flow batteries are promising for energy storage due to their high safety, high reliability, long cycle life, and high efficiency.
Mar 28, 2022
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4
Energy & Green Tech
Anion exchange membranes (AEMs) are semipermeable fuel cell components that can conduct anions but reject cations and gases. This enables the partition of substances that could chemically react with one another, thus allowing ...
Engineering
Having trouble hearing? Just turn up your shirt. That's the idea behind a new "acoustic fabric" developed by engineers at MIT and collaborators at Rhode Island School of Design.
Mar 16, 2022
2
147
Engineering
Solar electricity is produced almost entirely by panels, or modules, constructed with light-absorbing cells made from silicon. Silicon is the industry standard because it is reliable and inexpensive, with structure and performance ...
Mar 4, 2022
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86
Engineering
Boiling water can leave dark mineral deposits on the inside surface of your once-shiny aluminum kettle—nothing a little vinegar and baking soda can't scrub away.
Feb 16, 2022
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92
Engineering
Scientists from Graduate School of Systems and Information Engineering at the University of Tsukuba introduced a new technique for detecting when a hydrogen fuel cell is experiencing reduced efficiency due to periods of excess ...
Feb 10, 2022
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9
Energy & Green Tech
University of Delaware (UD) engineers have demonstrated a way to effectively capture 99% of carbon dioxide from air using a novel electrochemical system powered by hydrogen.
Feb 3, 2022
4
3185
A membrane is a layer of material which serves as a selective barrier between two phases and remains impermeable to specific particles, molecules, or substances when exposed to the action of a driving force. Some components are allowed passage by the membrane into a permeate stream, whereas others are retained by it and accumulate in the retentate stream.
Membranes can be of various thickness, with homogeneous or heterogeneous structure. Membrane can also be classified according to their pore diameter. According to IUPAC, there are three different types of pore size classifications: microporous (dp < 2nm), mesoporous (2nm < dp < 50nm) and macroporous (dp > 50nm). Membranes can be neutral or charged, and particles transport can be active or passive. The latter can be facilitated by pressure, concentration, chemical or electrical gradients of the membrane process. Membranes can be generally classified into three groups: inorganic, polymeric or biological membranes. These three types of membranes differ significantly in their structure and functionality.
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