#WaterWatch

Graphene-based sieve could convert sea water into drinking water

A group of researchers in the UK has designed a graphene-based sieve capable of removing salt from seawater.

The development could assist in the supply of clean drinking water to millions of people.

The results were released in the journal Nature Nanotechonology.

Dr Rahul Nair who has led the project, explains how the sieve uses a graphene oxide membrane to filter out the salt, with holes in the sieve less than one nanometre in size (0.000001mm).

We have a membrane which you can see and touch, we have made clean water from the saltwater, so this is a reality. The next step is how to do a mass scale production of this membrane.

Dr Rahul Nair, Scientist and research fellow at the University of Manchester

We haven't tested the real sea water, so we artificially created salt water and so the next step would be testing the sea water.

Dr Rahul Nair, Scientist and research fellow at the University of Manchester

We hope to do many tests to analyse the performance of this membrane in coming years, looking for our industrial collaborative to help us in engineering this material to a larger scale.

Dr Rahul Nair, Scientist and research fellow at the University of Manchester

Take a listen to Dr Rahul Nair explain this new discovery:

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
UCT engineering student creates affordable grey water system

UCT engineering student creates affordable grey water system

Nkosinathi Nkomo came up with a system that could turn grey water into usable water amidst the Cape Town water crisis.

This Cape Town man has been off the water grid by harvesting rainwater at home

This Cape Town man has been off the water grid by harvesting rainwater at home

Mechanical engineer Andy Cunninghame has proven that it is possible to save municipal water by harvesting and filtering rainwater.

'City must build trust with Capetonians about the water crisis'

'City must build trust with Capetonians about the water crisis'

Dr David Olivier says City needs to be transparent as a sense of panic in Cape Town increases with the dam levels get worsening.

SAB urges public to stop abusing free water at Newlands Spring

There have been several reports of abuse of the facility, with a number of people tapping far more water than is allowed.

The benefits of aqua aerobics (don't knock it 'til you've tried it)

Water aerobics is becoming an increasingly popular form of working out for people of all shapes, sizes, ages and fitness levels.

BizX: Keeping your garden alive during water restrictions

Disa Irrigation & Landscaping provides property owners with a solution to keep outdoor spaces beautiful amidst he drought.

Popular articles
Estate agent Aida admits it’s the source of SA’s largest data hack ever

Estate agent Aida admits it’s the source of SA’s largest data hack ever

The Money Show’s Bruce Whitfield interviews Stuff magazine’s Toby Shapshak.

UCT engineering student creates affordable grey water system

UCT engineering student creates affordable grey water system

Nkosinathi Nkomo came up with a system that could turn grey water into usable water amidst the Cape Town water crisis.

Meet Whitey Basson (the retail guru who turned Shoprite into a R127bn behemoth)

Meet Whitey Basson (the retail guru who turned Shoprite into a R127bn behemoth)

The Money Show’s Bruce Whitfield interviews the former CEO of Africa’s largest retailer by far.

CT airport shooting attempted hit on gang boss allegedly linked to '28s' -expert

CT airport shooting attempted hit on gang boss allegedly linked to '28s' -expert

A policing expert explains that the airport shooting may be linked to the shooting at a Stellenbosch nightclub this past weekend.

Almost 30 million SA ID numbers compromised after site hacked

Almost 30 million SA ID numbers compromised after site hacked

Independent Marketing Consultant in the Technology Space, Andrew Fraser says this looks like a leak and not a hack.

Cape Town International Airport shooting could be gang related - ACSA

Cape Town International Airport shooting could be gang related - ACSA

The incident happened in the early hours of Wednesday morning.