IT’S OFTEN said that necessity is the mother of invention.
If ever that maxim was borne out in our times, it would be in the case of the new plastic-sorting machine recently developed by students at Central Luzon State University (CLSU).
In a country where plastic waste has become a national shame, it’s a beacon of hope.
The problem is stark
The Philippines generates an estimated 2.7 million tons of plastic waste annually. Of that, around 20 percent leaks into our oceans — our mountains of islands and coastline make the issue even worse.
Seven of the world’s top 10 rivers for plastic pollution are in the Philippines. In short: we are among the worst in mis-managed plastic waste and yet our infrastructure for sorting and recycling is weak.
And yet, rather than wait, the young minds at CLSU said: “We’ll sort it.”.
The new plastic sorting machine, developed through a collaboration of the university’s Institute for Climate Change and Environmental Management (ICCEM), the Department of Information Technology, the ASKI Foundation and Coca‑Cola, has been soft launched as of March 2025. It can categorize polyethylene-terephthalate (PET) bottles into five classifications (Clean, Not Clean, Good Plastic, Blue and Reject).
Why I believe this matters
* Automating the MRFs – In many barangays our materials recovery facilities (MRFs) rely heavily on manual sorting.
It’s labor-intensive, error-prone and slow. A machine that does the sorting more reliably can raise the quality of recyclables, reduce contamination, and improve downstream recycling.
* Scaling potential – A locally designed machine means we are not wholly dependent on imported equipment. It also stimulates local innovation and keeps cost and maintenance closer to home.
* Supports the circular economy – With better sorting, more plastic has a pathway from “waste” back into “resource”. In a country where only about 28 % of key plastic resins were recycled in 2019 and the material-value loss is upwards of US$890 million per year.
* Youth and education: This invention came from students. That means a culture of innovation is alive; for me it signals we can entrust the next generation with technical solutions — not just policymakers. (To be continued)/PN
