Potential reduction of greenhouse gas emissions from campus waste: An integrated 4R framework (reduce, reuse, recycle, replace)Andik Irawan, Dicky Adi Tyagita, Wendy Triadji Nugroho, Arif Wahyudiono, Sahrul Ramadan, M. Syahrul Alvian and Endar HidayatBIO Web Conf., 210 (2026) 04002DOI: https://doi.org/10.1051/bioconf/202621004002