UPN “Veteran” Yogyakarta does not apply a sustainable solid waste management system. Waste is only carried out by storing, collecting, and transporting to TPA Piyungan. The purpose of this study was to determine the generation, composition and characteristics of waste and to provide recommendations for sustainable waste management strategies on the UPNVY campus. The method of measuring waste generation and composition refers to SNI 19-3964-1994. Waste characteristics were analyzed by proximate test and ultimate test. The results of the survey and measurements showed that the waste generation at UPNVY was 135.45 kg/day covering Campus I Condong catur at 96.66 kg/day and Campus II Babarsari at 37.79 kg/day. The composition of waste consists of organic waste (24.840%), paper (23.499%), soft plastic (7.450%), hard plastic (5.673%), plastic bag (9.129%), metal (1.294%), glass (1.392%), hazardous waste (0.512%), other waste (9.289%), and residue (16.922%). The proximate test showed that the highest moisture content was in food waste, the highest volatile content and calorific value were found in hard plastic. Meanwhile, the lowest ash content in soft plastic and the lowest fixed Carbon content was owned by plastic bag. For the ultimate test, plastic waste has the highest C and H content. The recommended sustainable waste management strategies are waste reduction and sortation; provision of sorted trash cans, processing of organic waste into compost; and construction of 3R TPS.

Desa Kalibeber merupakan salah satu desa di Kabupaten Wonosobo yang memiliki manifestasi panas bumiberupa mata air panas. Interaksi yang terjadi antara batuan dengan larutan hidrotermal dapat mengakibatkanterubahnya mineral yang dapat mempengaruhi karakteristik mata air panas. Penelitian ini bertujuan untukmengetahui karakteristik dan suhu bawah permukaan air panas bumi di daerah penelitian. Metode yangdigunakan adalah survei dan pemetaan, uji laboratorium dan analisis geokimia air. Hasil penelitian menunjukkanbahwa mata air panas memiliki karakteristik yaitu termasuk tipe mata air tahunan, debit kelas V, mata air panasdengan suhu 39oC, tipe air bikarbonat serta batuan pada lokasi penelitian belum mengalami alterasi. Potensimata air berdasarkan kualitas mata air secara fisik yaitu, tidak berbau, tidak berasa dan berwarna kuning. Suhubawah permukaan sekitar 172oC yang termasuk entalpi sedang sehingga fluida panas bumi hanya dapatdigunakan secara langsung.Kata Kunci: Panas Bumi, Mata Air Panas; Karakteristik; Suhu; Geokimia