Chemical and process

134_CHEM_PROCESS_LOGO_REVThe Chemical and Process Engineering division is a group for members working in the chemical, biochemical and process engineering sectors, providing CPD and networking events for engineers in these areas.

Chemical and Process Videos

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Chemical and Process News

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Chemical and Process in the Engineers Journal

Novel methods of synthesising quantum dot materials

For quantum dot (QD) materials to perform well in devices such as solar cells, the nanoscale crystals in them need to pack together tightly so that electrons can hop easily from one dot to the next and flow out as current. MIT researchers have now made QD films in which the dots vary by just one atom in diameter and are organised into solid lattices with unprecedented order. Subsequent processing pulls the QDs in the film closer together, further easing the electrons’ pathway. Tests using ...

Energy-saving UCD technology breathes life into wastewater treatment

Chemical engineers at University College Dublin (UCD) have developed new technology to save energy in wastewater treatment. Conventionally, bubbles of oxygen are forced through wastewater to support bacteria that remove nutrients and contaminants, but this wastes energy. Prof Eoin Casey and his research group at UCD’s School of Chemical and Bioprocess Engineering have developed an alternative technology: membranes that diffuse or ‘breathe’ oxygen and thereby directly support biofilms of ...

Catalyst handling - mitigating hazards relating to inert entry

Some catalysts require un/loading under inert conditions to exclude air and avoid pyrophoric ignition, catalyst damage or polythionic stress corrosion cracking of stainless-steel reactor internals. Nitrogen is most commonly used for this purpose, but its use poses an extreme risk of asphyxiation to personnel. Sadly, there have been numerous fatalities by asphyxiation during inert-entry activities in the hydrocarbon processing industry (HPI), even when the work is being carried out by ...

Chemical engineers could strip wine of sulphites for just a few cent per bottle

Winemakers have added sulphites to preserve their products since the time of the Roman Empire. Sulphites, a class of compounds including sulfur dioxide and sulphite salts, act as antioxidants and antibacterial compounds. They can occur naturally in the winemaking process or can be added by producers to preserve freshness and boost flavour in a vintage. But, according to the US Department of Agriculture, "People who have an intolerance to sulphites can experience symptoms including chest ...

Bioburden control and process closure in bulk biopharmaceuticals

This article is based on a presentation given at a recent Engineers Ireland seminar on biopharmaceuticals in Ireland, ‘A Global Perspective: Facility Design, Trends & Positioning for Growth’. It will outline the importance of process closure in biopharmaceutical production and how to undertake a risk assessment, process closure analysis, to support both a process design and operational procedures. Before examining process closure, one must understand the importance of bioburden control in ...

Novel microparticle means multiple doses of vaccine can be delivered with just one injection

Chemical engineers at Massachusetts Institute of Technology (MIT) have invented a new three-dimensional fabrication method that can generate a novel type of drug-carrying particle that could allow The new microparticles resemble tiny coffee cups that can be filled with a drug or vaccine and then sealed with a lid. The particles are made of a biocompatible, US Food and Drug Administration-approved polymer that can be designed to degrade at specific times, spilling out the contents of the ...

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