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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

Centre to enhance excellence in agriculture
2008-05-09

 

At the launch of the Centre for Excellence were, from the left, front: Ms Lesego Sejosengoe, Manager: Indigenous Food, Mangaung-University Community Partnership Project (MUCPP), Ms Kefuoe Mohapeloa, Deputy Director: national Department of Agriculture; back: Mr Garfield Whitebooi, Assistant Director: national Department of Agriculture, Dr Wimpie Nell, Director: Centre for Agricultural Management at the UFS, and Mr Petso Mokhatla, from the Centre for Agricultural Management and co-ordinator of the Excellence Model.
Photo: Leonie Bolleurs

UFS centre to enhance excellence in agriculture

The national Department of Agriculture (DoA) appointed the Centre for Agricultural Management within the Department of Agricultural Economics at the University of the Free State (UFS) as the centre of excellence to roll out the excellence model for small, medium and micro enterprises (SMME’s) for farmers in the Free State.

The centre was launched this week on the university’s Main Campus in Bloemfontein.

The excellence model, which is used worldwide, was adapted by the Department of Trade and Industry as an SMME Excellence Model. The DoA then adapted it for agricultural purposes.

“The excellence model aims to assist farmers in identifying gaps in business skills. These gaps will be addressed by means of short courses. It will help to close the gap between the 1st and 4th economy,” said Dr Wimpie Nell, Director of the Centre for Agricultural Management at the UFS.

The UFS – as co-ordinator of the SMME Excellence Model – the DoA, the private sector, municipalities, small enterprise development agencies, and non-governmental organisations will be working together to enhance excellence in agricultural businesses in the Free State.

The benefit of the model is that it changes the mindset of emerging farmers to see agriculture as a business and not as a way of living. Dr Nell said: “We also want to create a culture of competitiveness and sustainability amongst emerging farmers.”

“The Free State is the second province where the model has been implemented. Another four provinces will follow later this year. Altogether 23 officers from the DoA, NGO’s and private sector have already been trained as facilitators by the Centre of Excellence at the UFS,” said Dr Nell.

The facilitator training takes place during four contact sessions, which includes farm visits where facilitators get the opportunity to practically apply what they have learnt. On completion of the training facilitators use the excellence model to evaluate farming businesses and identify which skills (such as financial skills, entrepreneurship, etc.) the farmers need.

The co-ordinator from the Centre of Excellence, Mr Petso Mokhatla, will monitor the facilitators by visiting these farmers to establish the effectiveness of the implementation of the model. Facilitators must also report back to the centre on the progress of the farmers. This is an ongoing process where evaluation will be followed up by training and re-evaluation to ensure that successful establishment of emerging farmers has been achieved.

According to Ms Kefuoe Mohapeloa, Deputy Director from the national Department of Agriculture, one of the aims of government is to redistribute five million hectare of land (480 settled people per month) to previously disadvantaged individuals before 2010. The department also wants to increase black entrepreneurship in rural areas by 10% this year, increase food security by utilising scarce resources by 10%, and increase exports by black farmers by 10%.

“To fulfill these objectives it is very important for emerging farmers to get equipped with the necessary business skills. The UFS was a suitable candidate for this partnership because of its presence in the Accelerated and Shared Growth Initiative of South Africa (ASGISA). With the Jobs for Growth programme, ASGISA is an important extension to the Centre of Excellence and plays a major role in the implementation of the model to improve value-chain management,” said Ms Mohapeloa.

Twenty facilitators will receive training in June and another 20 in October this year. “The more facilitators we can train, the more farmers will benefit from the model,” said Dr Nell.

Media Release
Issued by: Lacea Loader
Assistant Director: Media Liaison
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: loaderl.stg@ufs.ac.za  
8 May 2008

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