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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

“Every journey begins with the first steps” – Marguerite van der Merwe
2016-07-08

Description: Marguerite van der Merwe Tags: Marguerite van der Merwe

Marguerite van der Merwe, recipient of University of the
Free State Chancellor’s Medal, with Chancellor
Dr Khotso Mokhele, at the Winter Graduation ceremony.

Photo: Johan Roux

Marguerite van der Merwe has dedicated her life to the enrichment and increased quality of life for others. At the University of the Free State’s Winter Graduations on 30 June 2016, Van der Merwe and her brother, Anthony Douglas Osler, were both honoured with Chancellor’s Medals for exceptional service to South Africa and the world beyond our borders. In the early 1980s, she learned about the Alexander Technique and her life since then has been about perfecting the technique and sharing it with others. The Alexander Technique teaches people of any age, gender, occupation or interest, how to be posture-aware and perfect, how to be aware and alert, and how to be calm and discriminating, all of which are part of a practical teaching to integrate these qualities consciously into all our daily human activities.  

She walks the walk

She understood the Alexander Technique to be the perfect way to develop the body both physically and mentally, as it develops the higher mental faculties like focus, attention, awareness, consciousness, discrimination, and unfolding of the psyche, thus developing the human potential holistically as a spiritual way of being. She received her training for the technique in Cape Town and London, thereafter she published The Art of Walking, a guide to the Alexander Technique.

Van der Merwe is an internationally-certified teacher of the Alexander Technique, has been offering this work and its application in the spheres of health, education, and performance skills for 30 years, both nationally and internationally.

Van der Merwe says that the South African higher education system should encompass a holistic approach to teaching and educating. Education should envisage a modern vision of education that supports the evolution of the potential of the human being as a holistic system – a competent, skilled, caring, kind individual, developed in physical, mental, emotional and sensorial aspects. She believes that students thus educated will model ‘wholeness’ and ‘humanness’ as they take their place in society, business, education, and entrepreneurship.

Enriching women’s potential

Apart from The Art of Walking, Van der Merwe published EVE-OLUTION, a book to inspire women to listen to their intuition, and empower women to repossess their bodily wisdom, freedom, and authenticity. Van der Merwe proclaims that it is important to liberate women to take charge of their own bodies, minds, and souls. The purpose of the book is to ensure that young women soak up wisdom and encouragement and for older women to express their wisdom, which needs to be respected and listened to.

“Females and feminine roles in society and family are being liberated and acknowledged in the actions of many women as we stand for equal opportunity, equal power, and equality in many fields,” says Van der Merwe.
“Our young women in business and the higher education fraternity, for one, are strong in their views, beautiful in their presence, outspoken in leadership,” Van der Merwe concluded.

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