Green Tech

Plastic sorting technologies encompass various methods to improve recycling efficiency. Initial mechanical steps include shredding and screening, followed by density-based techniques like float-sink tanks and air classification. Sensor-based systems, particularly NIR spectroscopy, offer high accuracy in separating polymers such as PET, HDPE, and PP. Optical and electrostatic methods enhance purity by identifying color, shape, and charge differences. Integrated lines can achieve over 99% purity for PET and PP with a 91% recovery rate. Emerging trends like hyperspectral imaging and AI-enhanced vision improve precision, while best practices emphasize calibration, maintenance, and data monitoring. These technologies support a circular plastics economy by optimizing throughput and economic returns.

Plastic waste has become one of the most pressing environmental challenges of the 21st century. From overflowing landfills to polluted oceans, the wor…