Prashant Kumar


Dr. Prashant Kumar is a Senior Lecturer in the Department of Civil and Environmental Engineering at the University of Surrey, and can be contacted by email: [email protected]

Road vehicles are known to be the largest contributor to the airborne nanoparticles in polluted urban environments. The heavy duty vehicles (HDV; i.e. truck, diesel buses) are known to be the largest contributor of airborne nanoparticles among road vehicles. Other on-vehicle sources of nanoparticles have not got much attention, but our recent work titled as “Nanoparticle emissions from 11 non-vehicle exhaust sources” published in Elsevier journal Atmospheric Environment and highlighted some interesting stats with respect to sources around us. For instance, each km of distance driven by a HDV produce of the order of 1000 billion (~1015) nanoparticles. One kg of fast wood burning produces nearly the same number of particles as for each km driven by a heavy duty vehicle. About 1 min of cooking on gas can produce the similar particle numbers generated by ~10 min of cigarette smoking or 1 m travel by a HDV.”

This full article can be accessed by clicking here to know more about other potential sources of nanoparticles and their dispersion, related exposure and health impacts, as well as state of current policies, guidelines and technical challenges to regulate them.

Posted in Civil Engineering, Environmental Engineering | Leave a comment

We all have seen various structures around us deteriorating because of several reasons. Air pollution, which is known to affect the human health, also play a crucial role in affecting the health of various materials used in buildings and transport infrastructure. Our recent article titled as “Footprints of air pollution and changing environment on the sustainability of built infrastructure” appeared recently in the Elsevier Journal Science of the Total Environment. This highlights the novel links between these cross-disciplinary topics and propose the way forward for mapping the corrosion in an area. The full article can be accessed by clicking here.

Posted in Civil Engineering, Environmental Engineering | Leave a comment

“Anti–pollution clothing invented” – this was one of the news headlines a few days ago. Well, this is another gift from the emergence of nanotechnology. According to the inventors, “any item of clothing could be treated, but in order for the technology to work you need light. So, for example, you wouldn’t want to coat your underpants”.  Simple but interesting estimates proposed were that if all the 10 million people living in London take one gram of coating out, this would consume 10 ten tons of nitrous oxide in London every day.

Continue reading »

Posted in Civil Engineering, Environmental Engineering, Uncategorized | Leave a comment

First of all, let me take the opportunity to welcome you to the CCE blog as it seems to be me writing this very first blog!

I recently learned that it is rare to have two yolks in an egg (see picture), though we would have seen this some time in our daily lives and just ignored. The probability of happening this is about 1 in 1000. This is even rarer when you break a number of eggs and continuously find these having two yolks. If we believe these statistics, one needs to break about 29000 eggs to find 29 double–yolked eggs, and the chances are extremely slim to find such double–yolked eggs in a row.

Double-yolked eggs (picture taken from Wikimedia)

There is recent news which can be read here or here with a title like ‘British woman cracks open 29 double–yolked eggs in a row’. She bought a tray of 30 eggs from Asda. Out of these 30 eggs, she found 29 of them (except the last one) having double–yolked, making a new world record after beating the previous best of six double–yolked eggs in a row.

This merely seems to be a co–incidence beating the previous statistics, but also leave questions to think about such instances. These eggs would have been picked randomly among several others while packaging and these all happens to be the same type – an interesting instance for probability analysis and open discussions/comments!

Posted in Uncategorized | Leave a comment