The Science Of ...

The Science of Waste-to-Energy: Producing 5% of Cape Town's gas

This week Bruce Whitfield looks at the Science of Waste-to-Energy with Egmont Ottermann CEO at New Horizons Energy.

Their plant in Cape Town was designed to be a true landfill alternative. They turn 500 tons of waste a day and turn it into bio-gas.

Cape Town produces 6-7000 tons of waste a day and the plant processes 10% of that total.

They work with Waste-Mart who collect the refuse and waste throughout Cape Town.

We take out all the stuff that does not go into a processor, like sofas and engine blocks...mattresses and computers. We have to separate the recyclables from the non-recyclables. That happens in a mechanical process.

Egmont Ottermann CEO at New Horizons Energy

The recyclables then go into a traditional municipal refuse facility. They get sent on to recycling companies.

The non-recyclables get put into a press.

I want you to imagine a garlic press. But not the size of a garlic press in your kitchen. This is slightly bigger and works at 280 bar ( 280 times the atmosphere) which is a lot of pressure.

Egmont Ottermann CEO at New Horizons Energy.

This press squeezes out all the organics that we can extract from this solid waste. It then goes into anaerobic digesters...it's a thick nice gooey juice. And the bugs love this juice. we produce a biogas which is a mixture of CO2 and methane. We split that and we produce liquefied CO2 at a food grade quality and produce biomethane which is compressed and used as a liquid petroleum gas - an LPG alternative.

Egmont Ottermann CEO at New Horizons Energy.

They produce 5% of Cape Town's gas requirement and they produce a good fertiliser.

Listen to the interview with Egmont Ottermann of New Horizons Energy below:


This article first appeared on 702 : The Science of Waste-to-Energy: Producing 5% of Cape Town's gas


Recommended

by NEWSROOM AI

CapeTalk welcomes all comments that are constructive, contribute to discussions in a meaningful manner and take stories forward.

However, we will NOT condone the following:

  • Racism (including offensive comments based on ethnicity and nationality)
  • Sexism
  • Homophobia
  • Religious intolerance
  • Cyber bullying
  • Hate speech
  • Derogatory language
  • Comments inciting violence.

We ask that your comments remain relevant to the articles they appear on and do not include general banter or conversation as this dilutes the effectiveness of the comments section.

We strive to make the CapeTalk community a safe and welcoming space for all.

CapeTalk reserves the right to: 1) remove any comments that do not follow the above guidelines; and, 2) ban users who repeatedly infringe the rules.

Should you find any comments upsetting or offensive you can also flag them and we will assess it against our guidelines.

CapeTalk is constantly reviewing its comments policy in order to create an environment conducive to constructive conversations.

Read More
How the 'creative economy' mines ideas, and turns them into money

How the 'creative economy' mines ideas, and turns them into money

Bruce Whitfield interviews The Loerie Awards CEO Andrew Human about the science of creativity and the creative economy.

The future of mining, South Africa’s lifeblood (and employer of 500 000 people)

The future of mining, South Africa’s lifeblood (and employer of 500 000 people)

The Money Show’s Bruce Whitfield interviews Jan-Adriaan du Plessis, Associate Director of Strategy and Operations at Deloitte.

How playing board games (we’re not kidding!) can make your business victorious

How playing board games (we’re not kidding!) can make your business victorious

The Money Show’s Bruce Whitfield interviews board game junky and famed speaker Richard Mulholland.

Emotional intelligence – not IQ – will keep your job safe from AI... for now

Emotional intelligence – not IQ – will keep your job safe from AI... for now

EQ will soon be one among the most sought-after attributes required of jobseekers. Refilwe Moloto interviews Joni Peddie.

VAT rate goes up to 15% on Sunday (yet remains among the world's lowest)

VAT rate goes up to 15% on Sunday (yet remains among the world's lowest)

The Money Show’s Bruce Whitfield interviews Charles de Wet, partner at PwC.

Sleep is a very productive way to spend your time (and it combats Alzheimer’s)

Sleep is a very productive way to spend your time (and it combats Alzheimer’s)

Sleep is as vital for complex life as food, water and oxygen. Bruce Whitfield interviewed FAB Quotient's Joni Peddie.

Popular articles
Ebrahim Rasool geared up to reclaim Western Cape to the ANC

Ebrahim Rasool geared up to reclaim Western Cape to the ANC

The ANC has announced that former premier of the Western Cape Ebrahim Rasool will head up the WC's 2019 election campaign.

I still drive a 2000 Camry. I don’t like debt - Chris Schutte (Astral Foods CEO)

I still drive a 2000 Camry. I don’t like debt - Chris Schutte (Astral Foods CEO)

The Money Show’s Bruce Whitfield interviews Schutte about his attitude to money (hopes and fears, successes and failures, etc.).

Heavy rains expected for Cape Town on Monday evening

Heavy rains expected for Cape Town on Monday evening

SA Weather Service statement says the drought-ridden province will be getting much-needed rain but warns of localised flooding.

'David Copperfield revealed his signature trick, but it won't sink his career'

'David Copperfield revealed his signature trick, but it won't sink his career'

Cape Town magician Stuart Lightbody says that the magicians' code should protect the wonder of magic more than the actual secrets.

Elsies CPF calls for WC govt to declare state of emergency on Cape Flats

Elsies CPF calls for WC govt to declare state of emergency on Cape Flats

The Elsies River CPF says the state of emergency should include special promulgations such as curfews, lockouts and lockdowns.

Highly-criticised world athletics body's rule could end Caster Semenya's career

Highly-criticised world athletics body's rule could end Caster Semenya's career

She faces ongoing complaints from rivals about having an "unfair advantage" on the track, but how fair is this proposed IAAF rule?

'I wasn't thinking rationally', says woman who ducked R 1 300 restaurant bill

'I wasn't thinking rationally', says woman who ducked R 1 300 restaurant bill

Sacha Geere came forward to pay a R 1 300 tab that she skipped over the weekend and explains her side of the widely-shared story.