Scientific innovations advance agri-photovoltaics and crop yields

Researchers are developing new technologies to optimize agricultural productivity and waste management through solar energy and mineral treatments.

In Sweden, scientists are testing agri-photovoltaics using semi-transparent, magenta-colored cadmium telluride thin-film modules. The pink tint allows red and blue light to pass through, enabling broccoli to grow nearly as large as those in open fields while simultaneously generating electricity. Although the broccoli takes 25 days longer to reach comparable size, the plants demonstrate a 4.5-fold increase in radiation use efficiency.

At Peking University, a team led by Lu Anhuai is exploring ‘mineral water photosynthesis.’ By treating irrigation water with natural minerals like birnessite and utilizing sunlight, researchers have seen significant yield increases: 24.7 percent for wheat, 45.7 percent for sugarcane, and up to 109.5 percent for sweet potatoes.

Additionally, a team from the American Chemical Society has developed a solar-powered bin lid insert designed to reduce odors. Using a lens to concentrate sunlight onto a manganese dioxide catalyst, the device can continuously break down acetic acid from rotting food waste for over 40 days.