Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
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

Ford foundation funds higher education redesign
2005-06-23

 

The Ford Foundation has pledged a grant of almost R280 000 for redesigning higher education delivery at three campuses in the Free State.

According to Prof Magda Fourie, Vice-Rector: Academic Planning at the University of the Free State (UFS), the three campuses that will be affected by the strategic reconfiguration of higher education delivery are the Qwaqwa campus at Phuthaditjhaba and the Vista campus of the UFS in Bloemfontein and the Welkom campus of the Central University of Technology (CUT).

Prof Fourie says the three campuses were all affected by the restructuring of higher education, in line with the National Plan for Higher Education.

The Qwaqwa campus of the UFS that was part of the former University of the North was incorporated into the UFS in January 2003.  Likewise the Bloemfontein campus of the former Vista University was incorporated into the UFS in January 2004.

The Welkom campus of the CUT was also part of the former Vista University and was incorporated into the CUT in January 2004.

“These incorporations pose a challenge in that we have to think creatively about the best ways of using these three campuses to service the higher education, training, skills development and human resource needs of the Free State,” Prof Fourie said.

“The grant from the Ford Foundation will primarily be used to draw up strategic funding proposals for the three campuses.  The Qwaqwa campus of the UFS is a priority to us given the poverty and unemployment in a largely rural area of the Free State,” said Prof Fourie.

“A detailed consultation process will be undertaken in the Qwaqwa campus sub-region which will hopefully result in a comprehensive and a coherent suite of higher education activities being established on this campus,” said Prof Fourie.

“It is envisaged that the Qwaqwa campus will become a centre of excellence in the area of rural development.  This vision is based on a focused integration of the core functions of a university – teaching, research, and community service – around the issue of rural development,” said Prof Fourie.

Prof Fourie said that various educational offerings including among others short courses, bridging and foundation programmes, and degrees could be offered, with a particular focus on providing courses of relevance to students from the local rural community and students from elsewhere with an interest in focusing on rural development studies.

She said the redesign of the three affected campuses is being managed as a project of the Free State Higher Education Consortium (FSHEC) consisting of all the higher education institutions operating in the Free State.

“The aim of the project is to establish how the Qwaqwa and Vista campuses of the UFS and the Welkom campus of the CUT can be used effectively to meet regional education and training needs, to serve the strategic priorities of the two higher education institutions and contribute to the sustainable development and poverty alleviation of the region,” she said.

The planning for the Vista campus of the UFS is still in an early stage.  “We are looking at the possibility of developing this campus into a hub of education and training opportunities for Bloemfontein and Free State region.  Further plans will be communicated later in the year,” said Prof Fourie.

Media release

Issued by:  Lacea Loader
   Media Representative
   Tel:  (051) 401-2584
   Cell:  083 645 2454
   E-mail:  loaderl.stg@mail.uovs.ac.za

23 June 2005
 

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept