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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

Outstanding alumni celebrated at the Chancellor’s Distinguished Alumni Awards
2017-08-28

 Description: Outstanding alumni celebrated at the Chancellor’s Distinguished Alumni Awards  Tags: Outstanding alumni celebrated at the Chancellor’s Distinguished Alumni Awards

From the left: Former Miss World and UFS Medical student, Rolene Strauss; Rector and Vice-Chancellor,
Prof Francis Petersen; The Chancellor’s Distinguished Alumnus of the Year,
Vian Chinner; and Chancellor of the UFS, Dr Khotso Mokhele. Photo: Charl Devenish

 

Alumni Awards Photo Gallery 

Alumni are the heart and soul of a university, a legacy that lives on for generations, bringing pride to the alma mater. Each year, the University of the Free State (UFS) through the Chancellor’s Distinguished Alumni Awards, celebrates its outstanding alumni, who have stood out among their peers, making waves in their careers, at home and abroad. The UFS Chancellor, Dr Khotso Mokhele, said the university plays a pivotal role in ensuring that students enjoy a life-long relationship with their alma mater.  He encouraged the UFS management to create opportunities to engage students during their years of study, in order to create this mutually-beneficial relationship into the future.

The Chancellor’s Distinguished Alumnus of the Year Award, the highest honour accorded to an alumnus, recognises the distinguished national or international achievements of its recipient. The award was presented to Vian Chinner, chief executive officer at Xineoh, a performance marketing company he founded in 2014. The company, based in Bloemfontein, with offices in Cape Town, Oregon in the US, and Vancouver in Canada, specialises in applying mathematical modelling and machine learning to optimise conversion in industries including real estate, mortgage banking and e-commerce. It has generated more than $30 million in revenue for its clients.

The Young Alumnus of the Year Award acknowledges the achievements of alumni who graduated within the past decade and was presented to Leah Molatseli, founder and managing director of Lenoma Legal, who graduated with an LLB at UFS in 2010.

The Cum Laude Award is bestowed upon an alumnus in recognition of excellence in any field, whether vocational or voluntary. The awards in this category were presented to three alumni:

David Abbey, Acquisition and Leveraged Finance Deal Maker at Rand Merchant Bank. David graduated with a BCom Accounting (RU) 2007 and a BCom Hons Accounting (UFS) in 2008.

Johan Eksteen, Agricon Pelleting, graduated with an MSc in Sustainable Agriculture in 1998, and received an MBA in 2005, both at the UFS.

Zola Valashiya, Co-founder and director: Debate Afrika and Schools Projects and Campaigns Manager at Corruption Watch. He graduated with an LLB (UFS) in 2014, and Masters of Public Administration (Central European University, Hungary) in 2016. He is a Mandela Rhodes Scholar (2015) and a Young African Leadership Initiative Mandela Washington Fellow (2017) and is presently featured on the Mail & Guardian list of top 200 young South Africans.

The Executive Management Award:
this service award is presented to an individual who has delivered exceptional service to the UFS and is not limited to alumni of the institution, current students and the community at large. The award was presented to Sarina Cronje, Head of Athletics at KovsieSport.

She graduated with a Bachelor of Science (UFS) in 1977 and a Postgraduate Diploma in Higher Education (UFS) in 1983. She is a mother and career woman, whose family carries the same passion and drive for sports that champions are made of.

The Kovsie Ambassador Award is bestowed upon a current student whose achievements have brought him/her distinction, benefited his/her community, and brought credit to the UFS.

Crystal-Donna Roberts graduated with a BA Drama and Theatre Arts (UFS) in 2005. She is an active television, theatre and film actress who has appeared in a multitude of theatre productions in addition to starring in Afrikaans soap opera “7de Laan, Getroud Met Rugby, Montana” and “Vallei van Sluiers” in which she won public favour. She is currently playing the lead role in the internationally acclaimed film, “Krotoa” which has won numerous awards including Best Film at the Harlem International Film Festival in New York. It also won the Award of Excellence at the International Film Festival for Women: Social Issues and Zero Discrimination, and many more.

Franco Smith, Director: Free State Rugby and Assistant Coach: Springboks. He graduated with a BA Human Movement Sciences (UFS) in 1996 and began his career in rugby in 1999 when he was selected for the Free State Under-18 Craven Week team. He became a regular on the Free State Under-20 and the UFS Shimlas teams prior to his Free State Cheetahs debut in 1992. Franco was reappointed backline coach of the Cheetahs and head coach of the Shimlas in 2015. With many accolades to his name an illustrious career in coaching and management over the years, the name Franco Smith should not be foreign to true rugby connoisseurs.

The Rector and Vice-Chancellor, Prof Francis Petersen, congratulated all the award recipients: “I applaud all alumni; you have made the city of Bloemfontein and the whole province proud.” The National Executive Alumni Chairperson, Dr Pieter du Toit, congratulated the award recipients and thanked the leadership of the university as well as the event organisers. 

The awards signify the great esteem with which the UFS holds its alumni and the community that helps to drive its vision, cherish its history and pave the way for more outstanding Kovsies of the future.

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