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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

Regional Conference on Trafficking in Human Beings
2007-06-29

Trafficking in Human Beings:
National and International Perspectives

Date: 17th August 2007
Address: CR Swart Auditorium, University of the Free State, Bloemfontein, South Africa.

Every year thousands of children and adults become victims of trafficking and abuse in South Africa and throughout the southern African region. Victims are trafficked for a myriad of reasons: sexual exploitation, including prostitution and pornography; illegal labour, including child conscription; domestic servitude; illegal adoptions; body parts/organs; and forced marriages.

The Unit for Children’s Rights, Department of Criminal and Medical Law, University of the Free State (UFS), together with the Centre for Continuing Legal Education at UFS, will host a Regional Conference on Trafficking in Human Beings. The conference will bring together key role-players from the South African government as well as crucial international non-governmental organizations (NGOs) in the region.

Trafficking in human beings, especially women and children, is a serious violation of the human rights of the victims, as well as an extremely profitable source of income to organized crime, and needs the attention and intervention of both governmental and non-governmental institutions in South Africa.

Speakers will include representatives from the United National Office on Drugs and Crime (UNODC), the International Organization for Migration (IOM), the National Prosecuting Authority (NPA), the South African Law Reform Commission, the Unit for Children’s Rights-UFS, and NGOs Molo Songololo and Terre Des Homes, that work with child trafficking victims in South Africa and around the world.

The media are invited to report on the conference, and interview speakers and presenters Attached find programme. For more info contact the following persons.

1. Beatri Kruger - 051 401 2108 / email: krugerh.rd@mail.ufs.ac.za  
2. Susan Kreston - 051 401 9562 / email: krestons.rd@mail.ufs.ac.za  
3. Elizabeth Snyman – 051 401 2268 / email: snymane.rd@mail.ufs.ac.za  

Programme

Trafficking in human beings:
National & international perspectives


Presented by The Unit for Children’s Rights, Department Of Criminal & Medical Law , Faculty of Law, in Conjunction with The Centre for Continuing Legal Education, University of the Free State.

Funded through the Generosity of the United States Department of State

17 AUGUST, 2007 – CR SWART AUDITORIAM

8:00-8:30 Registration & Tea
8:30-8:45 Opening & Welcome
Prof. JJ Henning, Faculty of Law
8:45-9:40 Overview & Global Perspective
Prof. Susan Kreston - Unit for Children’s Rights, Faculty of Law-UFS

9:40-10:00 TEA

10:00-10:45 International Perspectives & the Role of Organized Crime in Trafficking
Wiesje Zikkenheiner, Associate Expert
United Nations Office on Drugs & Crime, Pretoria
10:45-11:45 Identifying and Assisting Victims of Trafficking
Marija Nikolovska, Project Officer
International Organization for Migration, Pretoria

11:45-12:30 LUNCH

12:30-1:15 Prosecuting Trafficking Without Trafficking Laws
Adv. Nolwandle Qaba, Sexual Offences & Community Affairs Unit
National Prosecuting Authority, Pretoria
1:15-2:15 Recommendations for New Legislation in South Africa
Lowesa Stuurman - South African Law Reform Commission, Pretoria

2:15-2:30 TEA

2:30-2:50 The Role of Terre Des Homes in Fighting Trafficking in Children
Judith Mthombeni– Terre Des Homes, Pretoria
2:50-3:50 Trafficking in Children in South Africa – A Front Line Perspective
Patrick Solomon - Molo Songololo, Cape Town
3:50-4:00 Closing Remarks
Adv. Beatri Kruger
Department of Criminal & Medical Law - UFS

 

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