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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

UFS in joint venture with Empowerdex
2006-11-17

The University of the Free State (UFS) today became the first tertiary institution in the country to sign a joint venture agreement with Empowerdex, South Africa’s foremost black economic empowerment (BEE) ratings agency, to train BEE practitioners that will implement BEE across all sectors of the economy.
 
The agreement was signed by Mr Vuyo Jack, Executive Chairman of Empowerdex and Prof Frederick Fourie, Rector and Vice-Chancellor of the UFS.
 
Mr Jack and Mr Chia-Chao Wu, Managing Director of Empowerdex, will be appointed as visiting professors in the UFS School of Management as part of the joint venture.
 
“The joint venture entails the establishment of a transformation office within the Centre for Business Dynamics at the UFS which will administer training programmes and conduct contract research on BEE as well as the establishment of a verification agency within the UFS School of Management,” said Mr Danie Jacobs, Head of the Centre for Business Dynamics at the UFS.
 
“The verification agency within the UFS School of Management will be able to verify the BEE compliance of businesses in the Free State and Northern Cape,” said Mr Jacobs.
 
According to Mr Jacobs, the venture originates from the Department of Trade and Industry’s (DTI) directive to draft codes of good practice for businesses as stated in the Broad Based Black Empowerment Act 53 of 2003. The final codes will be announced shortly and will act as a standard framework for the measurement of broad based BEE across all sectors of the economy.
 
The codes comprise seven elements on which basis points are allocated to a business to determine its level of compliance to BEE. 
 
“The UFS is the only tertiary institution in the country which offers a formal certificate whereby BEE practitioners can be trained in order to ensure that they are competent to measure BEE,” said Mr Jacobs.
 
“Being able to utilise the UFS’ experience and expertise in the field of transformation is of great benefit to us and it will assist us in driving BEE in the country,” said Mr Jack. 
 
According to Mr Jack, the UFS is centrally situated, which will make it easy for BEE practitioners to access the appropriate training course to suit their needs. “The venture will have an impact not only on this region, but on the whole country as the extensive networks of both Empowerdex and the UFS will contribute to us reaching and training BEE practitioners,” said Mr Jack. 
 
The training programmes that will be offered by the transformation office within the UFS Centre for Business Dynamics are the Management Development Programme for BEE and Transformation, the Executive Credit Bearing Short Learning Programme and an online Non-Credit Bearing Short Learning Programme for BEE Specialists. 
 
“The expertise and knowledge that Empowerdex brings to the joint venture is invaluable. Empowerdex pioneered the empowerment methodology and has been actively involved in the drafting of broad based BEE legislation, regulations and transformation charters,” said Mr Jacobs.
 
Media release
Issued by: Lacea Loader
Media Representative
Tel:   (051) 401-2584
Cell: 083 645 2454
17 November 2006
 

Being empowered: Mr Vuyo Jack, Executive Chairman of BEE ratings agency Empowerdex, and Prof Frederick Fourie, Rector and Vice-Chancellor of the University of the Free State (UFS). Empowerdex and the UFS signed an agreement to train practitioners that will implement BEE across all sectors of the economy.

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