CPH Post

News

DTU scientists propose solution to city pollution problems

Team develops technology to reduce NOx emissions


Technbology could remove up to 300kg more NOx per bus every year (Photo: Colourbox)

June 11, 2014
09:51

by Philip Tees


Hydrogen tablets could reduce emissions of mono-nitrogen oxides (NOx) from city buses by up to 270 tonnes a year, the engineering trade magazine Ingeniøren reports.

Practically all buses and lorries are equipped with catalytic converters that reduce the emission of the toxic NOx gasses, but a 2012 report from the International Council on Clean Transportation found that emissions were still up to four times the permitted limit.

Status quo not good enough
It is now believed the catalytic converters only function properly when the exhaust fumes are over 200 degrees Celsius, which is seldom the case when the vehicle makes regular stops.

The hydrogen tablet, developed by a team from Denmark’s Technical University (DTU), could solve this problem by allowing the process to occur at lower temperatures.

Tue Johansen, the technical head of Amminex, a company that develops catalytic converters based on hydrogen tablet technology, told Ingeniøren that the technology could remove up to 300kg more NOx per bus every year (a total of 270 tonnes) if it was installed on all of Movia’s vehicles.

 “All that’s required to change the existing vehicle approval rules is political will,” he said.



Related stories



Latest Comments

I know a few Danes that were deported from the states so i support this. ;-)

(Juliousbass "the Future of Bass" on October 22, 2014 21:00)

Culture vultures

(Juliousbass "the Future of Bass" on October 22, 2014 20:55)

This is so cool. Funerals with the horse drawn hearses are always so sad &...

(Buzzy Sørensen on October 22, 2014 15:39)

Fraud seems to be an integral part of the Vestas business model. Allegations...

(Bill Jones on October 22, 2014 14:05)

This Brit has a long way to go before he is integrated in Denmark, and...

(Nicholas Gunder on October 22, 2014 13:43)

He has to defend a 12000 DKK spend? That is a joke.

(Andrei Grigorian on October 22, 2014 12:50)

I am against the new rules . It will destroy lots of green card holders life

(Sumon Das on October 22, 2014 10:54)

Ebola is a serious threat to the health and well-being of people aroubd the...

(Calvin Bernhardt on October 22, 2014 10:26)

Prayers to the families.

(Calvin Bernhardt on October 22, 2014 10:19)

Sad, but still a reality in Naestved.

(Calvin Bernhardt on October 22, 2014 10:10)