Elemental content of coffee waste biochar under different temperatures of pyrolysis
DOI:
https://doi.org/10.33292/ost.vol2no2.2022.79Keywords:
Biochar, Element content, Coffee waste, Temperature of pyrolysisAbstract
One abundant waste in the coffee shop industry is coffee powder or bean waste due to the expired. To control the coffee waste can be convert to be biochar which is useful for soil amendment. The purpose of this study was to determine the chemical properties of biochar derived from Coffee Waste. Producing biochar was done by burning the Coffee Waste using a furnace with a temperature of 250°C and 350°C, then ground and sieved with a size of 355 micrometers carried out at the Research Center for Limnology and Water Resources. Chemical property analysis using X-Ray Fluorescence Spectrometer (XRF) at Lampung Advanced Characterization Laboratory- BRIN. Based on the results of the analysis using XRF showed that the highest content in terms of the macronutrient of biochar is Potassium (K2O) around 83%, then Phosphor (P2O5) around 5%, and Sulfur (SO3) around 2-3%, then Magnesium (MgO) around 1.2-1.3%. That content only represents proportion of element, further analysis is needed to measure the concentration.
Salah satu limbah yang melimpah di industri kedai kopi adalah limbah bubuk atau biji kopi akibat kadaluwarsa. Untuk mengendalikan limbah kopi dapat dikonversi menjadi biochar yang berguna untuk pembenah tanah. Tujuan dari penelitian ini adalah untuk mengetahui sifat kimia biochar yang berasal dari Limbah Kopi. Pembuatan biochar dilakukan dengan cara membakar Limbah Kopi menggunakan tanur dengan suhu 250°C dan 350°C, kemudian digiling dan diayak dengan ukuran 355 mikrometer yang dilakukan di Puslit Limnologi dan Sumber Daya Air. Analisis sifat kimia menggunakan X-Ray Fluorescence Spectrometer (XRF) di Lampung Advanced Characterization Laboratory-BRIN. Berdasarkan hasil analisis menggunakan XRF menunjukkan bahwa kandungan makronutrien tertinggi dari biochar adalah Kalium (K2O) sekitar 83%, kemudian Fosfor (P2O5) sekitar 5%, dan Belerang (SO3) sekitar 2-3%, kemudian Magnesium (MgO) sekitar 1,2-1,3%. Kandungan tersebut hanya mewakili proporsi unsur, analisis lebih lanjut diperlukan untuk mengukur konsentrasinya.
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