Among the selected startups was AraBat, a company focused on recycling lithium-ion batteries. AraBat developed a bio-based technology that recovers valuable metals such as nickel and cobalt from spent batteries, utilizing plant waste like citrus peels instead of traditional toxic chemicals. This approach offers a more environmentally friendly alternative to conventional battery recycling methods, reducing the reliance on hazardous materials and minimizing pollution.

Another standout was Aruna Revolution, which is tackling the issue of plastic waste in menstrual products. Aruna Revolution designed a compostable menstrual pad made from agricultural by-products. The company aims to provide a high-performing, eco-conscious alternative to conventional pads, which often contain plastics and harmful chemicals that persist in the environment for extended periods.

CarbonBridge, another participant, is developing bioreactors. The specific application and technology behind CarbonBridge's bioreactors were not detailed, but bioreactors are generally used to cultivate cells or microorganisms for various purposes, including biofuel production, wastewater treatment, and carbon capture.

TechCrunch's Startup Battlefield serves as a platform for early-stage companies to gain exposure, attract investment, and connect with industry experts. The clean tech and energy category highlights the growing importance of innovation in addressing climate change and promoting sustainable practices. The competition provides a valuable opportunity for these startups to showcase their technologies and contribute to a cleaner, more sustainable future.