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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

Khayalami residence launches first in-house library
2016-04-21

Description: 2016 KL News Khayalami library  Tags: Khayalami residence launches first in-house library in the country
Bongani Mtotoba (left) and Sinoxolo Gcilitshana (right) at the first-ever 24 hour in-house library at Khayalami residence. The librarian and Deputy Residence Head respectively hope to revive the culture of reading on our Bloemfontein Campus.
Photo: Valentino Ndaba

“It is said that reading means to the brain what exercise means to the body. For that reason, we want to bring back the culture of reading to our students who are, after all, the future replacement of the leadership of our wounded and broken country,” said Sinoxolo Gcilitshana, Deputy Residence Head, and Prime of Khayalami.

Titles such as A Life Ever Lasting by Miranda Hearn, To Live Free by William Wilberforce, Powers of Darkness Powers of Light by John Cornwell, and Character Counts by Charles Dyer are among the 228 inspirational books on the shelves of Khayalami residence’s library. Tuesday 12 April 2016 was a proud moment for the residence as it launched the first library in the country located within a university residence on the Bloemfontein Campus of the University of the Free State.

Last year, Dimpho Jasa, a resident at Khayalami, approached Sinoxolo, who then held the Residence Committee (RC): Academics portfolio, with an idea of forming a book club. Sinoxolo had suggested that a library be established in order to make the book club sustainable. That conversation served as a foundation of the 24 hour in-house library.

“We started with five books last year,” said Sinoxolo, “and ever since we sent the message out, the Vice-Chancellor and Rector, Prof Jonathan Jansen has been supporting us together with the Vice-Rector, Prof Nicky Morgan, as well as the Dean of the Faculty of Education, Prof Sechaba Mahlomaholo, and the Head of the Department of English, Prof Helene Strauss.”  

Now, more than 170 young men have access to a growing library that is expected to hold 1500 books by September, when Sinoxolo steps down as the Prime. According to Bongani Mtotoba, the RC: Academics and librarian, some residents have made pledges to help expand the collection. “The response has been quite positive from the guys,” he said.

Borrowers are required to submit a book review upon returning the book. This feedback will be compiled by the English Department into a book available to the public.

Khayalami’s pioneering spirit has also seen the residence run a successful writing competition in 2015. It has since been introduced to the rest of the East College, and now will take place annually.  

For more information on how to donate books or enter the writing completion, contact Sinoxolo on 0783332203 or semsinoxolo@hotmail.com.

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