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23 November 2021 | Story Leonie Bolleurs | Photo Tania Allen
Dr Jana Vermaas and Ketshepileone Matlhoko are working on research that leaves your washing clean and fresh without the use of any detergents, which is also beneficial to the environment.

Cold water or hot water? Omo or Skip? Laundry blues is a reality in most households and when you add stains to the equation, then what was supposed to be part of your weekly household routine, becomes frustrating and time consuming. 

Researchers at the University of the Free State (UFS) are conducting research that is putting a whole new environmentally friendly spin on laundry day.

Sustainability and environmental conservation

Dr Jana Vermaas, Lecturer in the Department of Sustainable Food Systems and Development at the UFS, is passionate about textiles and sustainability – almost a decade ago, she conducted a study on the efficacy of anolyte as a disinfectant for textiles.

She describes the process: “During electrochemical activation, a dilute solution of natrium chloride/salt passes through a cylindrical electrolytic cell where the anodic and cathodic chambers are separated. Two separate streams of electrochemically activated water are produced. Anolyte as water was produced at the positive electrode and has a low pH, high oxidation-reduction potential and contains dissolved chloride, oxygen, and hydroxyl radical. It also has an antimicrobial effect.”

The benefits of this process are in line with her enthusiasm for environmental conservation. 

According to Dr Vermaas, the amount of water and chemicals used to clean textile articles is massive. “Chemicals used to disinfect, for example, hospital laundry, are hazardous. Not all laundries in the industry have a closed loop system or try to remove the chemicals before the wastewater is discarded.”

“Different amounts of detergents have various effects on our fauna and flora. Due to their low biodegradability, toxicity, and high absorbance of particles, detergents can reduce the natural water quality, cause pH changes in soil and water, lead to eutrophication (too many nutrients), reduce light transmission, and increase salinity in water sources.”

“But with the catholyte and anolyte process, water returns to its original status, which means that the water solution becomes inactive again after production where it existed in a metastable state while containing many free radicals and a variety of molecules for 48 hours. Thus, no chemicals are left in the wastewater. The water can therefore be recycled, not as potable water but, for example, to flush toilets or to water plants.

“We should do what we can to save water,” she says. 

Should you, like Dr Vermaas, also feel strongly about protecting the environment and want to obtain one of these machines that leaves your washing clean and fresh without the use of any detergents, you will be able to find such an appliance in South Arica. However, it does not come cheap. “It is a bit costly for residential use, but might be more accessible in the future,” states Dr Vermaas, who is of the opinion that it is a more sustainable option for commercial laundries.

Detergency properties and colourfastness 

Recently, more research has been conducted on this topic, but with a focus on the detergency properties of the catholyte to clean different textile fibres (natural and synthetic). Catholyte, she explains, is water produced at the negative electrode with a high pH, low oxidation-reduction potential, containing alkaline minerals. It also has surface active agents that increase the wetting properties, and it is an antioxidant. 

“A master’s student in the department, Ketshepileone Matlhoko, will be submitting her dissertation at the end of November on the possibility of using the catholyte as a scouring agent to clean raw wool,” says Dr Vermaas. 

The department is also conducting studies to investigate the influence of both catholyte and anolyte on colourfastness.

*Graphic: Production of electrolysed water (Nakae and Indaba, 2000). Diagram: Supplied



News Archive

Miss Deaf SA inspires UFS teachers with her life story
2009-11-26

Pictured from the left, are: K. Botshelo, Vickey Fourie (Miss Deaf SA) and A. Morake.

Vicki Fourie, Miss Deaf SA 2009 and Miss Deaf HESC, recently visited the University of the Free State to motivate aspiring Foundation Phase teachers by sharing her life story with them.

When Vicki was two years old, her parents found out that she couldn’t speak. Two possible explanations were that she had had an ear infection or speech problems. They took her to a specialist and after a brain scan they found out that Vicki had 97% hearing loss in both ears.

Hearing aids were required and Vicki’s father, Pastor Gerhard Fourie from the Christian Revival Church (CRC) enrolled her in a kindergarten school for deaf children, Carel Du Toit in Cape Town.

However, even though Carel Du Toit’s slogan is ‘Where Deaf Children Learn to Speak’, it was because of her mother’s efforts that Vicki is able to communicate effectively with hearing people today.

Bonita Fourie would sit with her child every single day and teach her how to pronounce words phonetically and how to read lips. It is because of that that Vicki is not dependent on sign language at all.

When she was seven years old, her parents enrolled her in an English A.C.E. school. Even though Vicki’s home language is Afrikaans, her parents decided to go against the norm by placing her in an English school (most deaf/hard of hearing people cannot learn a second language). Today Vicki is fluent in both languages.

“I used to think that my hearing aids are just a normal thing you put on, like using glasses for reading,” she said. “I still think that way. People always come up to me and say, ‘It’s amazing how easily you adapt to hearing people. You have no stumbling blocks or holdbacks.’

“To me it’s interesting because my reaction is always this: ‘God gave me this situation, and I have made the best of it. I’ve overcome it, and therefore I can go forward in life’. We were born not to survive, but to thrive. I detest the attitude of, ‘I’m a victim, so the world owes me something’. The world owes nobody anything! We can be victorious over our own circumstances. It is possible. My name’s meaning is testifies to this: “Vicki” comes from the word “Victory”. I was meant to be victorious, and not a victim.”

Vicki, who is now 20, has achieved so much in life. She did ballet, hip-hop, modern dancing, drama (she even went to America for her dramatic monologue and poetry recitation), and she has published over 70 magazine articles, nationally and internationally. Her dreams are to write books one day, become a TV presenter, and motivate and inspire people all over South Africa through public speaking.

When one hears this story, one cannot help but be surprised by her success. It makes you realize that anything is possible when you see the potential in a child, and then do everything in your power to develop it and draw it out. When you believe in the child that you are educating, that child will sense it and blossom like a flower.

“Courage isn’t a gift, it is a decision,” Vicki said. “There will always be things that try to hold you back. The key to working with any child is to be patient, patient, and patient! Teachers play a huge role in equipping children for the future. It is a big responsibility, but it can be done.”
 

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