ANALISIS KINERJA MIXED BED PADA PLTU PT YTL JAWA TIMUR: STUDI KAPASITAS TUKAR ION, STRUKTUR MIKROSKOPIS, DAN THROUGHPUT RESIN
DOI:
https://doi.org/10.33795/distilat.v12i3.7995Keywords:
mixed bed, resin degradation, resin fouling, resin penukar ionAbstract
PLTU PT YTL Jawa Timur memanfaatkan air laut sebagai sumber utama air proses, yang kemudian diolah melalui sistem mixed bed menggunakan resin penukar ion untuk menghasilkan air demineral. Penelitian ini bertujuan untuk menganalisis kondisi resin dalam unit mixed bed 01 guna mengidentifikasi adanya resin degradation dan resin fouling sebagai penyebab penurunan performa sistem. Metode yang digunakan adalah pengambilan sampel resin dari beberapa titik mixed bed, dilanjutkan dengan analisis mikroskopis dan perhitungan kapasitas tukar ion (TEC), serta throughput eksperimental dan aktual. Variabel utama yang dianalisis adalah kapasitas tukar ion resin kation dan anion serta efisiensi penurunan ion terlarut. Hasil menunjukkan bahwa resin kation mengalami degradasi sebesar 21% dan resin anion sebesar 7%, ditandai dengan keretakan dan pecahnya struktur resin, terutama pada resin kation. Namun demikian, tidak ditemukan tanda-tanda fouling pada resin berdasarkan hasil observasi visual dan mikroskopis. Selain itu, throughput aktual yang mendekati 20.000 ton lebih besar dari desain awal 6.500 ton, menunjukkan bahwa penurunan performa bukan disebabkan oleh degradasi resin.
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