Homegrown Initiatives to #BeatPlasticPollution

31 JUL 2023
Tonnes of plastic waste in Singapore compressed into cubes

Beating plastic pollution in our own way

Every year, the United Nations celebrates World Environment Day to raise awareness for specific environmental issues and encourage people to take action.

This year’s theme? #BeatPlasticPollution.

By now, you’d have seen the videos of straws up sea turtle’s noses and gawked at the size of the Great Pacific Garbage Patch – which is approx 2,225.31 times the size of Singapore. Maybe you read about how  microplastics are already in our bodies. Or how marine mammals choke on one-time-use disposable plastic bags.

Closer to home, Singapore generates about 1,000,000 tonnes of plastic waste every year. At the same time, only about 6% is recycled. You might be wondering: in the grand scheme of things – can tech play a part to #BeatPlasticPollution?

Well, we’ve got some answers.

BINgo bins

One of the biggest problems with recycling in Singapore is poor recycling habits. For example, when people put items contaminated with food waste into bins, it can contaminate the entire batch of recyclables and make it impossible to recycle.

Other examples of poor recycling habits include:

  • Putting recyclables in the wrong bins. For example, putting plastic bottles in the paper bin or putting metal cans in the plastic bin.

  • Not rinsing out recyclable containers. Food residue can attract pests and contaminate other recyclables.

  • Putting non-recyclable items in recycling bins. This includes items such as plastic bags, styrofoam, and nappies.

Enter BINgo bins – a collaboration between FairPrice Group and A*STAR.

They’re smart bins that utilise AI, IoT, and smart sensors to encourage correct recycling and improve recycling rates. How? By employing automated sorting technology and sensors to ensure that only suitable materials are accepted. Currently, a prototype BINgo machine has been set up at AMK Hub, and additional prototypes will gradually be installed at NEX and FairPrice Hub. These machines will remain at the locations for a duration of up to one year until October 2023.

From Plastic to Roads

Traditionally, roads are made of bitumen – a viscous liquid produced from the distillation of crude oil. But maybe that will change in the future.

Magorium, a Singapore-based start-up, has developed technology to recycle plastic waste into a material that can be used to lay roads. It can currently recycle six types of plastic into what it calls NEWBitumen (maybe a homage to NEWater?).

The recycled plastic actually replaces part of the bitumen mix, meaning less bitumen is needed, saving costs and reducing the environmental impact of road construction. In addition, it also makes roads more durable and water-resistant.

The start-up has already paved a few green roads in Singapore, including driveways at locations like Bukit Timah Road, Marymount and Changi.

Recycling made free and ezi

Why do people not recycle? Two reasons immediately stand out. Time and money.

Well, an app called Ezi by Sembcorp tackles both head-on. Ezi is an app that makes recycling free and convenient, allowing residents to have their recyclables collected from their doorstep for free – as long as they have at least 5 kg worth of recyclables. In addition, Ezi rewards users based on the prevailing price of recyclables.

How does it work? You’d be surprised. Turns out, Ezi works with good ol’ Karang Guni when it comes to the collection – about 100 of them. And just like the good ol’ days, people will also receive some payment for their stuff. Save money, while reducing plastic pollution; pretty hard to argue against that!

Enter the Reverse Vending Machine

You all know the vending machine. But have you met its eco-friendly sibling, the Reverse Vending Machine?

Reverse Vending Machines (RVMs) are machines that allow people to recycle their empty drink containers (aluminium cans or plastic bottles) in exchange for rewards. What rewards? For every 10 empty drink containers deposited in a single transaction, users can choose from one option from the range of non-monetary rewards below:

  • STAR$, which can be used to redeem eCapitaVouchers and deals on the CapitaStar App, or directly offset shopping and dining transactions across CapitaLand malls

  • ActiveSG credits, which can be used at all ActiveSG facilities

  • Free rides on Anywheel bicycles

Under the spirit of environmental stewardship, users can also opt not to be rewarded.

While the RVMs first made their appearance in 2018 as part of a collab between NEA and beverage company F&N in two locations in Singapore, they soon grew in popularity. For reference, NEA collected over 200,000 beverage containers in the first year of the program. But by 2020, the NEA had expanded the RVM program to 50 locations. The result? Over 1 million beverage containers were collected.

From plastic to power

It’s easy to recycle PET plastic bottles, but other plastic garbage like food containers, styrofoam, and bags are harder to recycle. (Have you tried washing them? They always seem to stay oily).

Right now, we burn them or bury them in landfills, which pollutes both the water and soil. However, scientists from Nanyang Technological University (NTU) have figured out a way to turn plastic trash – collected from the ocean, no less – into hydrogen, using a process that involves high heat known as pyrolysis.

With this new method, scientists can transform plastic garbage into two things: hydrogen and carbon nanotubes. Both are useful byproducts. Carbon nanotubes are a solid form of carbon with many industrial applications, including their use in electronics, materials science, energy, medicine, and other areas.

Hydrogen can be used to produce electricity and power things like the batteries in electric cars, and it only leaves behind water when used – this is better known as hydrogen fuel cell technology.

If anything, they’ve shown that it’s possible to convert all non-recyclable plastics into fuel and valuable materials. Who says recycling is a waste of time?

Conclusion

While Singapore grapples with an undeniable plastic issue, it’s definitely not a lost cause. These diverse initiatives are an encouraging reminder that every one of us, individually and collectively, can play a significant role in combatting plastic pollution. Why not start by trying out some of the initiatives listed here?