The fuel consumption rate rises and is expected to increase continuously, causing fuel supplies to be depleted and this condition forces the community to find alternative sources of fuel such as bio-briquettes. The waste of canary shells is widespread in Indonesia and can be used as an alternative energy source of bio-briquette making. There is a need for study on the influence of raw materials bio-briquette mixture of coal and canary shells against the value of calories produced. Bio-briquette making in this study have been done using canary shell and coal with a composition: (250 gr coal/canary shell: 12.5 tapioca starch: 50 ml water). Before briquette making, the canary shell samples are pirolysed and a grain-size reduction is performed on both of coal and canary shells. Canary shell and coal bio-briquettes are made with four variations (types). The types of bio briquette are: type I of bio-briquette with a composition of 250 gr (coal) + 12.5 gr (tapioca starch) + 50 ml (water). Type II of bio-briquette with a composition of 250 gr (canary shell) + 12.5 gr (tapioca starch) + 50 ml (water). Type III of bio-briquette with a composition of 62.5 gr canary shell + 62.5 gr coal + 12.5 gr (tapioca starch) + 50 ml (water). Bio-briquette type IV consist of 93.75 gr (canary shell) + 31.25 (coal) + 12.5 gr (tapioca starch) + 50 ml (water). After preparation, all bio briquettes are analyzed to determine the caloric value. The results of the study shows bio-briquette type I has a caloric value of 5,539 kcal/g, bio-briquette type II produces the highest calorie value of 6,354 kcal/g, and bio-briquette type III is 6,020 kcal/g. Further more bio-briquette Type IV indicate caloric value of 6,096 kcal/g. Bio-briquette type IV is the most recommended in the utilization because of the goal of this study is to use canary shell as an alternative fuel.

Air Asam Tambang (AAT) merupakan dampak lingkungan penting dari kegiatan pertambangan, baik tambang bijih maupun tambang batubara yang terokdidasi dengan mineral sulfida. Isu ini menjadi semakin penting apabila penanganan Air Asam Tambang tidak dilakukan dengan baik maka akan menjadi beban pada masa pascatambang. Material yang digunakan dalam proses pengolahan air asam tambang adalah bahan yang memiliki alkalinitas seperti batu gamping namun fly ash atau abu sisa pembakaran batubara berpotensi memiliki kadar alkalinitas dan selama ini hanya dianggap sebagai limbah B3 karena bisa menjadi kontaminan pencemar, maka dari itu dilakukan penelitian untuk mengkaji lebih dalam mengenai potensi pemanfaatan fly ash sebagai bahan penetral. Pada penelitian ini fly ash digunakan sebagai bahan utama, studi ini bertujuan untuk melakukan analisis kandungan fly ash untuk proses penetralan air asam tambang dan untuk mengkaji karakteristik dari fly ash berkaitan denga kandungannya. Percobaan ini menganalisis kandungan fly ash dengan bebeberapa pengujian yaitu uji sifat fisik ( distribusi ukuran partikel, SEM-EDS) dan pengujian sifat kimia (XRF, XRD, Uji Statik). Hasil penilitian ini menunjukan fly ash dapat dijadikan salah satu alternatif bahan penetral asam karena memiliki nilai ANC yang tinggi 337,88 kgH2SO4/ton dan kandungan Total Sulfur yang rendah 0,37%. Nilai pH paste dan NAG pH menunjukan bahwa fly ash sangat reaktif dan ukuran butir fly ash yang kecil menunjukan bahwa semakin kecil ukuran butir, maka semakin besar luas permukaan sampel untuk kontak dengan air asam tambang. Hal ini menyebabkan sampel fly ash semakin reaktif atau sangat mudah bereaksi dengan air asam tambang yang digunakan dalam proses penetralan. Dari hasil pengujian mineral dan unsur dengan keterdapatan kandungan alumunium oksida, gypsum dan mineral yang mengandung kapur diindikasikan fly ash memiliki sifat alkalinitas.

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Advances in technology for making maps based on satellite imagery make it very easy for users, including in the fields of geology and mining. As a cadet majoring in Mining geology at the Applied Techno Aviation Vocational School in Makassar, you should know and be able to use GPS and be able to process the data into a map using QGIS software, but on the other hand, there are no GPS tools and software in schools. Therefore, the UMI Community Service Institute (LPkM) through its novice service provider held a GPS Training for Making Maps Using QGIS Software. The method applied is to provide materials and training in a blended system, then monitoring and evaluation are carried out. The cadets can understand and use GPS, understand the basic concepts of maps, and can create maps using QGIS software after attending the training. The value of Sig.(2-tailed) was 0.0000.04, proving that there was a difference between before and after the training, so it can be concluded that the training had a positive impact on increasing the cadets' understanding regarding the use of GPS and QGIS.