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10 June 2025 | Story Leonie Bolleurs | Photo Supplied
Anita Venter
According to Dr Anita Venter, eco-bricks help prevent further environmental degradation, a theme often highlighted by World Environment Day.

Students filling plastic bottles with tightly packed wrappers, chips packets, and cling wrap until they are sturdy may not look like revolutionaries, but that is exactly what they are. This Eco-Bricks initiative is a grassroots effort that transforms plastic waste into construction material, sparking environmental change from the ground up. From there, the possibilities multiply – from benches to buildings, and from awareness to action.

It is not just about just stuffing bottles; it is about shifting mindsets.

Dr Anita Venter, Lecturer in the Centre for Development Support at the University of the Free State (UFS), believes eco-bricks directly address the urgent need for solutions to plastic pollution. “By taking plastic out of the waste stream and giving it a new, useful life, we're actively participating in ecosystem restoration and preventing further environmental degradation, a theme often highlighted by World Environment Day.”

However, the Eco-Bricks project is doing more than managing waste. “Beyond this practical application, it serves as a powerful community development tool, empowering individuals to take control of waste management and fostering a vital environmental consciousness.”

And while we can dream of a plastic-free world, Dr Venter is grounded in today’s realities. “So, my approach is that I'd rather have plastic contained safely within a bottle – repurposed in a regenerative way – than seeing it break down into nano-plastics, poisoning our earth. This project is about finding practical solutions within our current reality.”

 

A no-cost solution 

Dr Venter does not lead from a podium; she is mentoring from the sidelines. “I'm primarily involved in mentoring our student champions. They are the real drivers, facilitating the eco-brick training peer-to-peer. It's about empowering them to spread the knowledge and skills, rather than me being the sole instructor. It’s a beautiful ripple effect.”

And ripple it does. “These initiatives continue in their communities, and that truly warms my heart,” she says. The students are taking the lessons home, creating a chain reaction of action and awareness. “It’s not just about building bricks; it’s about inspiring continued action.”

The concept’s biggest success story? Thousands of eco-bricks being used by the Natural Building Collective in the Western Cape for formalised buildings. Proof that what was started by students can reshape entire landscapes.

“I see eco-bricks as an incredible community development tool. What’s beautiful about it is that it’s a no-cost activity. Anyone who wants to start a community development initiative can pick it up, and they immediately reap the dual benefits of cleaning their environment and taking control of their own waste management. It’s very empowering on a grassroots level.”

 

Regeneration starts here

Dr Venter, who has been part of the initiative since 2013, sees it as integral to her broader environmental work as climate activist focusing on research related to housing, informal settlement upgrading, culture, socio-ecological development, regenerative design, and art. She is quick to connect plastic pollution to the deeper ecological crisis we face. “Plastic is a monumental environmental problem, rapidly leading to biodiversity collapse, which I honestly believe is a far more pressing issue than even the climate crisis itself. It’s stark – babies are now born with plastic in their tiny bodies, and these microplastics are found in every human organ. It’s a pervasive crisis.” 

With students and community leaders now steering the project, she is hopeful about the future: “The beauty of something so accessible and practical is that it doesn’t need top-down direction; it flourishes from the ground up as people recognise its value and adopt it.”

Dr Venter’s commitment to making waste meaningful goes well beyond the Eco-Bricks initiative. In the project What Remains Through Time, Slowness and Stillness, waste is transformed into meaningful art, and communities step into the role of co-creators. 

Using post-natural building techniques, the project incorporates both waste and natural materials, marrying ecological restoration with social transformation. Sites such as the Oliewenhuis Art Museum, Bloemfontein National Hospital, and Sekoele Holistic Living Arts Centre serve as hubs where participants can engage hands-on, learning new skills while strengthening their communities.

According to Dr Venter, the main activities at Oliewenhuis are from June to September this year. Here, the focus is on community collaboration and regenerative art that goes far beyond constructing physical spaces. “We’re aiming to break down social barriers and make art truly accessible and inclusive within public spaces. It’s as much about building community as it is about building structures,” she says.

So, what can you do?

Start where you are. Join an eco-brick or art-for-regeneration initiative. “Go beyond sustainability! We need to regenerate, to ‘renew, restore, revitalise’,” says Dr Venter. Attend a training event. Share what you learn. “That’s how we create real, lasting change – through shared knowledge and empowered action.”

News Archive

Research helps farmers save with irrigation
2017-02-15

Description: Irrigation research Tags: Irrigation research

Marcill Venter, lecturer in the Department of
Agricultural Economics at the University of the
Free State, has developed the mathematical
programming system, Soil Water Irrigation
Planning and Energy Management in order to
determine irrigation pump hours.
Photo: Rulanzen Martin

Her advice to farmers is that they should make sure they are aware of the total cost (investment and operating costs) of an irrigation system. In most cases the investment cost is low, but the operating cost over the lifetime of the system is high.

“It is very important to have a look at the total cost and to install the most economic system,” says Marcill Venter, lecturer at the University of the Free State (UFS), who has done research on the economic sustainability of water-pipe systems.

Irrigation systems important components for farming
This research comes at a time when many farmers are relying on their irrigation systems due to persistent drought and low rainfall during 2016. South Africa has also experienced an abnormal increase in electricity tariffs in recent years. Due to tariff increases which threaten the future profitability of irrigation producers, the Water Research Commission (WRC) has launched and financed a project on the sustainable management of irrigation farming systems. “I had the opportunity to work on the project as a researcher,” says Venter.

The heart of every irrigation system is the water pipes that bring life to crops and livestock, and this is what Venter’s research is about. “Water pipes are part of the whole design of irrigation systems. The design of the system impact certain factors which determine the investment and operating costs,” she says.

Mathematical system to help farmers
Venter and Professor Bennie Grové, also from the Department of Agricultural Economics at the UFS, designed the Soil Water Irrigation Planning and Energy Management (SWIP-E) programming model as part of the WRC’s project, as well as for her master’s degree. “The model determines irrigation pump hours through a daily groundwater budget, while also taking into account the time-of-use electricity tariff structure and change in kilowatt requirements arising from the main-line design,” says Venter. The model is a non-linear programming model programmed in General Algebraic Modeling System (GAMS).

Design of irrigation system important for sustainability

The main outcome of the study is that the time-of-use electricity tariff structure (Ruraflex) is always more profitable than the flat-rate structure (Landrate). The interaction between the management and design of a system is crucial, as it determines the investment and operating costs. Irrigation designers should take the investment and operating cost of a system into account during the design process. The standards set by the South African Irrigation Institute (SAII) should also be controlled and revised.

Water-pipe thickness plays major role in cost cuts
There is interaction between water-pipe thickness, investment and operating costs. When thinner water pipes are installed, it increases the friction in the system as well as the kilowatt usage. A high kilowatt increases the operating cost, but the use of thinner water pipes lowers the investment cost. Thicker water pipes therefore lower the friction and the kilowatt requirements, which leads to lower operating costs, but thicker pipes have a higher investment cost. “It is thus crucial to look at the total cost (operating and investment cost) when investing in a new system. Farmers should invest in the system with the lowest total cost,” says Venter.

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