How the Moringa can purify water

10 March 2019 | Environment

Next Thursday (14 March), the National Commission on Research, Science & Technology (NCRST) hosts a public lecture presented by Prof Habauka Kwaambwa on the evaluation of antibacterial properties of the Moringa species found in South Africa and Namibia.

The aim of the project was to evaluate the suitability of Moringa plants as both a source of antimicrobial compounds and as biosand filter for the removal of microbial pathogens in water.

Kwaambwa's research involved evaluating the antimicrobial activity of leaves, fresh pods, flowers, seeds and roots of Moringa species against bacterial strains, while developing a new technology of water and wastewater treatment that eliminates the use of chemicals, meaning that it is fully sustainable, cheap and easy-to-use for rural communities.

The latter involved developing a Moringa seed-sand biofilter for water treatment because the use of chemicals is normally expensive and has health and environmental effects associated with them.

Two prototypes of the water treatment system using Moringa seed ­powder have been developed.

Both prototypes have an elevated raw water tank (which serves as a gravitational feed tank for the system), a flocculation tank where the Moringa seed powder extract is added and a settling tank where coagulated/flocculated impurities (including bacteria), settle and the clear water either overflows or is filtered to the next tank.

The second prototype has additional features for sludge removal in the settling tank, as well as sand and carbon filter tanks at the lowest end of the process. Both sand and carbon filters are fitted with backwashing valves fed from the backwashing basin.

The water purification device that couples the filtration capabilities of sand and charcoal (both readily available) with the antimicrobial and flocculating properties of the cationic protein are found in a Moringa seed. This technology eliminates the presence of organic material in the effluent to permit long water storage without bacterial re-growth.

The event takes place at the Namibia Scientific Society at 18:00.

Similar News

 

‘Special agents’ used in fight against cacti

1 week ago - 05 September 2019 | Environment

Windhoek • Tanja BauseFor the first time in 30 years, two insect species were released in Windhoek with the aim of reducing two invasive cacti...

Agriculture in harmony with nature

4 weeks ago - 18 August 2019 | Environment

“Sustainability so often has negative connotations,” says Fabian von Hase. He finds the term “ecological health” more fitting.“Sustainable means that we do less harm to...

Prickly intruders

4 weeks ago - 18 August 2019 | Environment

Windhoek • Theresa Lang Gunhild Voigts carries gardening tools with her wherever she goes. Peek in her car and you will find rakes, saws and...

Be aware!

1 month - 15 August 2019 | Environment

The Ministry of Environment and Tourism together with partners, kick-started awareness activities for the National Clean-Up Day with a clean-up campaign and awareness session targeting...

‘Help save the planet!’

1 month - 11 August 2019 | Environment

Earthlife Namibia urges schools to turn Fridays into days of marching to Parliament and handing over petitions, to raise awareness on saving the planet.In a...

More help for roadworks

1 month - 11 August 2019 | Environment

FNB Namibia's Tourism Division donated N$10 000 toward the Etosha road project aimed at grading, ripping, and if needed, filling roads in the park for...

Nuwe tegnologie in stroperstryd

1 month - 04 August 2019 | Environment

Renosterstropery is 'n baie ernstige probleem, met meer as 1 000 renosters wat volgens die internasionale organisasie Save the Rhino per jaar vanaf 2013 tot...

Working towards a cleaner ­Namibia

1 month - 28 July 2019 | Environment

Walvis Bay • Leandrea Louw The National Solid Waste Management Advisory Panel held a meeting in Walvis Bay to discuss the proposed establishment of a...

AquaVitae Project studies kick off

1 month - 21 July 2019 | Environment

Over the next four years, scientists from different corners of the globe will work together to increase aquaculture production of low-trophic species in and around...

B(r)agging rights!

1 month - 21 July 2019 | Environment

As from next month, Cymot is “going green” by introducing a new carrier bag that is made from 100% Namibian recycled material in all branches...

Latest News

Lewcor buys Elizabeth Bay Mine

3 days ago - 12 September 2019 | Business

Namdeb today announced that it sold its Elizabeth Bay Mine and associated marine assets as a going concern to a member of the Lewcor Group,...

New owner for Bytes Technology

3 days ago - 12 September 2019 | Business

Altron Rest of Africa (Altron ROA), a division of JSE-listed technology company Altron, announced the sale of a minority stake in its subsidiary, Bytes Technology...

Hey millennials, listen up!

3 days ago - 12 September 2019 | Economics

About 30 years ago, purchasing property was a no-brainer. However, millennials have been taught to question everything, including whether real estate is the best investment...

This boy is on fire

3 days ago - 12 September 2019 | Sports

Yolanda Nel With two older brothers that are well-known in the spinning community, it is no wonder their younger brother is following in their footsteps....

Going for gold

3 days ago - 12 September 2019 | Banking

Last night, Bank Windhoek launched their Selekt Gold offering with the aim of providing the market with a relevant, holistic financial solution.The Selekt Gold offering...

Barok uit die boonste rakke

3 days ago - 12 September 2019 | Art and Entertainment

’n Orrelkonsert met die musiek van Bach, Handel en Corelli is Vrydag, 27 September in die Christuskirche te hoor, wanneer die Suid-Afrikaanse konsertorrelis en vakkundige...

The world is your (shopping)...

4 days ago - 11 September 2019 | Business

After introducing the DHL Africa eShop app in April this year, it is now also available in Namibia.Since its launch, the app has seen its...

Think pink!

4 days ago - 11 September 2019 | Health

Breast and cervical cancers remain a serious concern in Namibia, with 2 474 cases of breast cancer that have been reported to the National Cancer...

Commemorate together

4 days ago - 11 September 2019 | Health

World Lymphoma Awareness Day is commemorated on 15 September every year and is dedicated to raising awareness of lymphoma, an increasingly common form of cancer....

Load More