PENGARUH KONSENTRASI NAOH TERHADAP KAPPA REDUCTION PADA PROSES OXYGEN DELIGNIFICATION DI PT. TOBA PULP LESTARI, TBK
DOI:
https://doi.org/10.61844/jtkm.v4i2.1139Kata Kunci:
Dissolving pulp, Kappa number, NaOH, Oxygen delignificationAbstrak
Industri pulp dan kertas merupakan sektor strategis yang berkontribusi signifikan terhadap perekonomian Indonesia, salah satunya melalui produksi dissolving pulp dengan kandungan selulosa tinggi. Penelitian ini bertujuan untuk mengkaji pengaruh variasi konsentrasi NaOH terhadap penurunan nilai Kappa, serta menganalisis hubungannya dengan viskositas dan tingkat kecerahan (brightness) pulp pada proses oxygen delignification. Pengujian dilakukan di PT. Toba Pulp Lestari Tbk dengan metode standar, nilai Kappa ditentukan menggunakan TAPPI T236, viskositas diukur dengan metode larutan tembaga etilendiamin (CuEn), dan brightness dianalisis menggunakan standar ISO 2470. Hasil penelitian menunjukkan bahwa peningkatan konsentrasi NaOH menurunkan nilai Kappa dan meningkatkan brightness, namun diikuti penurunan viskositas. Kondisi optimum dicapai pada konsentrasi NaOH sebesar 11%, dengan nilai Kappa 4.4, brightness 48,9% ISO dan viskositas 16,3 mPa·s. Dengan demikian, konsentrasi 11% NaOH dianggap paling efektif dalam meningkatkan efisiensi delignifikasi tanpa mengorbankan kualitas pulp.
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Referensi
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