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

Financial planners graduate
2011-06-10

 
Adv. Wessel Oosthuizen, Director of the CFPL, and Gerhard Meyer, Chairperson of the Board of Directors, Financial Planning Institute of Southern Africa.
Photo: Stephen Collett

At this year’s graduation ceremony, the Centre for Financial Planning Law (CFPL) at our university awarded 377 diplomas (305 to students in the Postgraduate Diploma in Financial Planning, and 72 to students in the Advanced Postgraduate Diploma in Financial Planning).

Three students in the Advanced Postgraduate Diploma passed the diploma with distinction. They are David Grant, Stephen Grizic and Yashika Rambujan. Ruan Schroder, Daniel Venter and Adri Viljoen passed the Postgraduate Diploma with distinction. Adri Viljoen is also the overall top student in the Postgraduate Diploma, while David Grant is the overall top student in the Advanced Postgraduate Diploma.
 
During another highlight at this event, Adv. Wessel Oosthuizen, Director of the UFS’s CFPL, was awarded the Chairman's Award for outstanding lifetime contribution to the Financial Planning Industry. This award is made by the Chairman of the Board of Directors of the Financial Planning Institute of Southern Africa to a person who has made a significant and extraordinary contribution to the financial planning industry. As this is only the second year that the award is being made, it is an exceptional honour.
 
For five years, the UFS was the only institution to offer a full qualification in order to become a Certified Financial Planning Professional. The university is still the largest institution in this regard. The Centre for Financial Planning Law (CFPL) at the UFS is also the only institution in South Africa to offer the Advanced Postgraduate Diploma in Financial Planning Law, which is a purely specialisation diploma.
 
To date, the CFPL at our universityhas awarded 3 657 Postgraduate Diplomas and 659 Advanced Postgraduate Diploma in Financial Planning.

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