Adsorptive membrane treatment technologies may not have a low energy footprint

Adsorption is a low energy water and wastewater treatment technology. Thus, would the combination of adsorption and membrane treatment technologies lead to a low energy treatment system? The answer depends on the pore size of the membrane used in adsorptive membrane technologies, where the membrane surface serves as adsorbent for the sorption of heavy metals … More Adsorptive membrane treatment technologies may not have a low energy footprint

Energy requirement of forward osmosis membrane processes may not be lower than that of reverse osmosis

Forward osmosis is a relatively new membrane process for wastewater treatment. Specifically, it entails the addition of a volatile solute (such as ammonium carbonate) to the permeate side of the membrane for inducing the diffusion of water molecules across the membrane down a water concentration gradient. The volatile solute would be subsequently removed from the … More Energy requirement of forward osmosis membrane processes may not be lower than that of reverse osmosis

Total synthesis for expanding the repertoire of bond forming reactions in synthetic organic chemistry

In synthetic organic chemistry, total synthesis of a compound refers to the use of multiple reactions for deriving a target compound using, as inputs, simple molecules commonly available. The task is therefore immense, and serves as a critical test for the ingenuity of the researchers in brainstorming new bond forming reactions able to couple two … More Total synthesis for expanding the repertoire of bond forming reactions in synthetic organic chemistry

Approach to chemical engineering education at the undergraduate level

The chemical engineering science approach that focuses on molecular understanding of various processes important to chemical engineering remains the most popular approach by which chemical engineering departments around the world teach the subject. However, chemical engineering practice and design typically relies on a style of analysis different from the molecular-based chemical engineering science approach. How … More Approach to chemical engineering education at the undergraduate level

Mass transfer resistance in chemical engineering

Mass transfer resistance is a metaphor for enabling students to better understand the molecular behaviour of liquids near gas bubbles or solids.   Specifically, due to intermolecular force of attraction, a thin layer of liquid would be permanently attracted to the surface of a gas bubble or solid particle. This layer of liquid, for example, … More Mass transfer resistance in chemical engineering

Different fractions from a polymerisation reactor

Polymers such as those used in clothing and the foam layer of running shoes are manufactured through a polymerisation reaction, most commonly free radical polymerisation. Hence, depending on how the reaction is tuned and controlled, different grades of polymers would predominate in the products stream coming out of the reactor.   However, irrespective of the … More Different fractions from a polymerisation reactor

Industrial chemistry and chemical engineering

We are surrounded by plastics, disposable drinks bottles, and clothing made of synthetic materials such as polyesters. But, where do these materials come from? The common notion would be chemical engineering. The answer is correct, but what is chemical engineering?   Chemical engineering is a discipline that evolved from industrial chemistry in the early 1900s. … More Industrial chemistry and chemical engineering