Engineering
Researchers at CU Boulder have developed a new membrane water filtration system based around air bubbles that can help address water scarcity issues around the world.
Jul 25, 2023
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61
Engineering
The ocean isn't just impacted by climate change—it may also be part of the solution to reversing it.
Jul 24, 2023
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20
Engineering
Effectively extracting valuable resources from water could go a long way toward enhancing national security while also helping the environment. Two recent studies from the lab of Prof. Menachem Elimelech offer perspectives ...
Jul 24, 2023
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34
Energy & Green Tech
Promising new hydrogen fuel cell technology has up to 50% higher performance than current state-of-the-art technology, with improved durability. The grooved electrode design advance may help optimize next-generation fuel ...
Jun 27, 2023
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67
Engineering
Umeå University researchers have made a breakthrough that may make hydrogen—a clean, CO2-free fuel—more affordable. The team has developed a new method that improves how hydrogen gas is produced from water and electricity, ...
Jun 8, 2023
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210
Energy & Green Tech
Increasing awareness of emerging environmental and climate change effects has expedited the global commercialization of clean energy. Naturally, the demand for powering up several small-scale and low power devices has increased. ...
May 24, 2023
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4
Energy & Green Tech
Seawater's mix of hydrogen, oxygen, sodium and other elements makes it vital to life on Earth. But that same complex chemistry has made it difficult to extract hydrogen gas for clean energy uses.
Apr 11, 2023
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800
Engineering
In the coming decades, renewable energy sources such as solar and wind will increasingly dominate the conventional power grid. Because those sources only generate electricity when it's sunny or windy, ensuring a reliable ...
Apr 10, 2023
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34
Engineering
The purification of various water resources, such as rain, seawater, groundwater, river water, sewage, and wastewater, into potable or usable water is a high-energy process. But what if electricity could be generated during ...
Feb 23, 2023
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71
Computer Sciences
Ralph Lydic, professor in the UT Department of Psychology, and Dmitry Bolmatov, a research assistant professor in the UT Department of Physics and Astronomy, are part of a UT/ORNL research team studying how bio-inspired materials ...
Jan 9, 2023
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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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