Biosintesis nanopartikel emas (AuNP) menggunakan ekstrak Sargassum horneri (SH) dinilai lebih ekonomis dan terbukti menghasilkan nanopartikel emas yang berperan sebagai katalis dalam degradasi zat warna. Oleh karena itu, produksi nanopartikel emas perlu dikembangkan dalam skala industri. Penelitian ini bertujuan untuk mengetahui kelayakan proyek biosintesis nanopartikel emas menggunakan ekstrak Sargassum horneri dalam skala industri. Metode evaluasi ekonomi menggunakan analisis terhadap beberapa parameter evaluasi ekonomi seperti Gross Profit Margin (GPM), Break Even Point (BEP), Cumulative Net Present Value (CNPV), Payback Period (PBP), dan Profitability Index (PI). Hasil penelitian menunjukkan bahwa pada skala industri, jumlah produksi Nanopartikel Emas dalam setahun adalah 132 L. Total harga yang dibutuhkan untuk produksi nanopartikel emas dalam setahun adalah USD 8.573.006,05, dengan penjualan tahunan USD 13.200.000, sehingga total biaya adalah USD 4.626.993,95 USD per tahun. Dalam kondisi ideal, analisis PBP menunjukkan bahwa proyek akan menguntungkan pada tahun ke-3, dan analisis PI menunjukkan bahwa biaya modal awal dapat diperoleh kembali dari tahun ke-3. Analisis terhadap beberapa kondisi tidak ideal menunjukkan bahwa kerugian proyek dapat terjadi. Berdasarkan evaluasi ekonomi, proyek ini dapat dilakukan dengan mengantisipasi kerugian yang akan terjadi akibat perubahan beberapa kondisi ideal.
This study aims to design and analyze the design of a batch-type reactor to optimize the production of gold nanoparticles on an industrial scale. The method used in the design of this reactor is the computational analysis of the reactor calculations, including stirring and mass balance as initial calculations using the Microsoft Excel application manually. The calculation results show that the designed reactor specifications have a reactor volume of 21.7335 ft3, cylinder height of 13.4612 in, a height of solution in the cylinder of 8.9046 in, vessel diameter of 73.2984 in, design pressure of 9.9978 psig, impeller length of 9.1840 in, shaft length of 10.5418 in, with stirring power 62.5228 Hp. Reactor design analysis is an important stage in the design of production processes on an industrial scale, where the specification results from the designed reactor can be used not only to adjust the reactor to the product but also to be used as a reference for production costs. The results of computational analysis and calculations performed on the reactor design in this study can be used as a reference and can be applied in the design of reactor performance analysis as a learning media, including operating mechanisms in the production process.
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