Education Policy | Post Primary | Preschool | Primary | Tertiary | Search

 


Waste Product has Potential to Clean Waterways


Waste Product has Potential to Clean Waterways

Old tyres clogging up New Zealand's landfills could be recycled and used to clean up waterways, according to a researcher at The University of Auckland.

Dr Nadhem Hamadi, who graduated this year with a PhD from the Faculty of Engineering, has spent the last four years researching the use of tyres to create an adsorbent material that removes common wastewater contaminants such as pesticides, chromium and colour.

"There are companies in the United States using tyres to create gas and liquids, but no one has been using the solid waste. When I started my research I wanted to do something related to the environment, and I soon realised that old tyres offered a raft of possibilities," he says.

Dr Hamadi found that tyre-derived activated carbon is produced by pyrolysis and activating the tyres. Activated carbon commonly used to remove contaminants from water.

"The carbon we produced has similar properties to commercial varieties on the market and could therefore be economically competitive", he says.

"But the real advantage of this form of activated carbon is that it is obtained from a waste material. Usually coal, coconut shell and wood are used to create activated carbon so this project eliminates the need to deplete those natural resources," he says.

"Scrap tyres are a growing problem around the world and the most common forms of disposal are land filling, followed by stockpiling and incineration. This means we may have a new, environmentally-friendly method of recycling the tyres."

Dr Hamadi says the study was the first of its kind to convert old tyres into activated carbon, but the breakthrough has been to come up with a product that is commercially competitive.

"To convince people that this process is worth it, we needed to trial it against commercial products, and we believe our product is as good, if not better than those already available," he says.

The profitability of using old tyres to produce activated carbon is expected to increase further as the cost of other forms of tyre disposal increases.

Dr Hamadi says the project is the first step towards creating the new product and he hopes a New Zealand company will see the potential and commercialise the process.

"When I started my studies I wanted to do something useful for New Zealand and I hope this leads to an environmental solution," he says.

Dr Hamadi, who is from Basra in Iraq, completed a Bachelor of Engineering in Kuwait and a Master of Engineering in Iraq before immigrating to New Zealand in 1996.

Dr Hamadi conducted his research in the Department of Chemical and Materials Engineering and was supervised by Professor Xiao Dong Chen and Associate Professor Mohammed Farid.


© Scoop Media

 
 
 
 
 
Culture Headlines | Health Headlines | Education Headlines

 

Electronica: Restoring The World’s First Recorded Computer Music

University of Canterbury Distinguished Professor Jack Copeland and UC alumni and composer Jason Long have restored the earliest known recording of computer-generated music, created more than 65 years ago using programming techniques devised by Alan Turing. More>>

ALSO:

Scoop Review Of Books: Almost Getting Away With Murder

The Black Widow by Lee-Anne Cartier: Lee-Anne Cartier is the sister of the Christchurch man found to have been murdered by his wife, Helen Milner, after an initial assumption by police that his death, in 2009, was suicide. More>>

Howard Davis: Triple Echo - The Malevich/Reinhardt/Hotere Nexus

Howard Davis: The current juxtaposition of works by Ralph Hotere and Ad Reinhardt at Te Papa perfectly exemplifies Jean Michel Massing's preoccupation with the transmigration of imagery in a remarkable triple echo effect... More>>

Scoop Review Of Books: Nō Tāu Manawa

Vaughan Rapatahana responds to Fale Aitu | Spirit House by Tusiata Avi: "fa’afetai Tusiata, fa’afetai, / you’ve swerved & served us a masterclass corpus / through graft / of tears & fears..." More>>

9 Golds - 21 Medals: NZ Team Celebrates As Rio 2016 Paralympic Games Close

The entire New Zealand Paralympic Team, led by kiwi sprinter and double gold medallist Liam Malone as flag bearer, are on the bus to the Maracanã Stadium in Rio de Janeiro for the Closing Ceremony of the Rio 2016 Paralympic Games. There, they will celebrate the fantastic successes of the past 10 days. More>>

ALSO:

New Zealand Improv Festival: The Festival Of Moments To Return To The Capital

The eighth incarnation of the New Zealand Improv Festival comes to BATS Theatre this 4-8 October , with a stellar line-up of spontaneous theatre and instant comedy performed and directed by top improvisors from around New Zealand and the world. More>>

ALSO:

Get More From Scoop

 
 

LATEST HEADLINES

 
 
 
 
Education
Search Scoop  
 
 
Powered by Vodafone
NZ independent news