Blocks made from sewage cut CO2

Aaron Morby 5 years ago
Share

Yorkshire Water has teamed up with Leeds University to trial house blocks made from incinerated sewage ash.

Picture 6

The blocks combine ash from incinerated sewage with vegetable oil to make blocks which are classified as carbon-negative because the oil comes from plants which have sucked out C02 from the atmosphere.

The university spin-out company Encos has been specialising in alternatives to traditional building methods and the new blocks are being developed for commercial use.

During a patented process standard oils undergo a number of complex chemical reactions which transform it from a viscous liquid into a solid binding matrix.

Masonry units incorporating the binders and manufactured at the Encos laboratories have successfully passed crucial industry tests including fire, freeze-thaw and compressive strength.

The firm has also produced bricks and slips using the process.

The products were also successfully used in the construction of several ‘test walls’ including one at Poundbury – the urban development project built on land owned by the Duchy of Cornwall.

Jon Brigg, a spokesman for Yorkshire Water, said the bricks and blocks were classed as carbon negative because the plants used to make the vegetable oil have absorbed CO2 from the atmosphere.

He said: “We are always looking for ways in which we can make the best use of our waste to have a positive impact on our environment, and this project is a great way to reuse incinerated sludge ash which has traditionally been sent to landfill.

“With new building regulations coming into force in the next few years home builders will need to reduce the embedded carbon cost of all new homes – the bricks and blocks will provide a perfect alternative to traditional house bricks.”

A scale production plant is in design and is planned for operation in 2012.

Encos masonry blocks and bricks have been calculated to achieve a reduction of 160% and 120% respectively in greenhouse gas emissions, compared to traditional clay bricks and concrete blocks.

Latest news

Wolseley to close 80 branches axing 800 jobs

Plumbing and builders' merchant chain to streamline UK business
18 hours ago

Wates links-up with Trafford Housing Trust to transform eysore

First scheme for new joint venture in the North West
11 hours ago

Skanska to start next £70m phase of Helical Bar Old Street site

Skanska confirmed on The Tower at The Bower originally earmarked for John Sisk
18 hours ago

Green light for next King’s Cross offices phase

Major 500,000 sq ft crescent-shaped office scheme approved
19 hours ago

Newlon starts race for £200m new-build framework

London housing association plans to build 2,000 homes by 2022
17 hours ago

Aldi to build 70 new stores next year

Budget supermarket chain aims to invest £300m in UK stores
1 day ago

Morrison Utility Services promotes Jim Arnold to chief executive

Charles Morrison steps up to become chairman of utility contractor
2 days ago

SES wins £43m M&E job at military rehab centre

M&E works secured at Defence and National Rehabilitation Centre at Stanford Hall
19 hours ago

Crossrail faces demo over “missing” pay

Civils operatives claim high tech site access system is not registering all hours worked
2 days ago

J S Wright lands £4m building services package

Specialist to start in December on Brentford resi site
2 days ago

Wates appoints B&K director to head Midlands team

John Carlin joins Wates after 24 years with Bowmer and Kirkland
2 days ago

Green light for £200m Manchester Kampus scheme

Demolition work to start this Autumn for 500 private rented flats project
2 days ago

Arup blames Brexit for planned job cuts

Consultation starts on redundancies at London building division
2 days ago

Surrey Uni seeks builder for £34m student hall

More student accommodation planned after O'Hare & McGovern bags first scheme
2 days ago

Focus on Northern homes pays dividends for Gleeson

Owning a Gleeson home "cheaper than council house rent"
2 days ago

BBC starts hunt for contractor to rebuild Eastenders set

Procurement race starts for £15m revamp of Albert Square
4 days ago

London South Bank Uni unveils £500m development plan

University starts hunt for developer to deliver 10-year plan
2 days ago

Lakehouse job losses could hit 170

Redundancy programme continues at Essex contractor
5 days ago

Contractor hunt starts for £185m mixed-use Manchester job

Green light from planners for twin resi towers and office block
5 days ago

Mobile crane explodes causing fireball on M40

Highway contractors are planning to resurface the damaged part of the M40 today
5 days ago

Morgan Sindall on recruitment drive for £750m highways deal

Recruitment events in East Anglia next week: Register now
5 days ago

John Sisk front runner for £28m Manchester PRS flats

Finance secured for developer Mulbury's 135-home Port Street project
5 days ago

Near-miss for Crossrail workers as train hits power cable

Investigation launched after construction train rips electricity panel from tunnel wall
5 days ago

Nationwide Platforms md takes Ardent chief executive role

Jeremy Fish joins Ardent to steer expansion drive
5 days ago

Kier posts loss after £116m raft of one-off costs

Kier counts cost of Caribbean closure and Mouchel and May Gurney integration
6 days ago

Council set to tender £26m Dover leisure centre

Contractor due to be appointed next August for new Whitfield swimming and sports complex
5 days ago

Betting Spy: Leicester a big price to beat misfiring Man Utd

Spurs, Everton and Man City can land a 5/1 treble
5 days ago

Willmott Dixon unveils off-the-shelf police cell design

Contractor works with Canadian architect to draw up modular cell block design
5 days ago

Celebrity hosts confirmed for Construction Enquirer Awards

Comedian Russell Kane and TV architecture expert George Clarke to host big night: Last few tables remaining
6 days ago

Highways workers move to new coloured hard hat regime

Days numbered for green and yellow hard hats
6 days ago