Karbon Aktif Teraktivasi ZnCl2 sebagai Adsorben Logam Fe(III) Di Limbah Laboratorium Universitas Negeri Gorontalo

Siti Hadijah Lamato Bempa, Wiwin R Kunusa

Abstract


Limbah laboratorium kimia merupakan limbah B3 mengandung unsur logam berat seperti besi (Fe) yang dihasilkan dari aktivitas praktikum dan penelitian. Penelitian ini bertujuan menganalisa kemampuan karbon aktif ampas tebu teraktivasi ZnCl2 sebagai adsorben logam Fe(III) pada limbah laboratorium Universitas Negeri Gorontalo. Karbon aktif dikarakterisasi kadar air, kadar abu, daya adsorpsi, serta analisis FTIR, SEM, XRD. Aplikasi menggunakan metode adsorpsi dengan pengompleks 0,5 mL KSCN 2M ditambah 0,3 mL HNO3 4M dan absorbansi diukur dalam Spektrometer UV-Visible. Nilai absorbansi dari hasil pengukuran larutan standar dengan variasi konsentrasi 0.1, 0.3, 0.5, 0.7 dan 1 ppm, larutan induk Fe 100 ppm diperoleh persamaan regresi li nier y = 0.0721x + 0.0135 nilai regresi (R2) = 0.9988(λMax) 490 nm dengan nilai absorbansi (A) tertinggi yakni 0.043. Hasil penelitian menunjukkan karbon aktif teraktivasi ZnCl2 efektif dalam mengadsorpsi logam Fe(III) di limbah laboratorium dengan kadar teradsorpsi sampel A 88.36%, sampel B 94.10%, sampel C 92.36%, sampel D 90.19%, sampel E 91,49%, sampel F 90.91% dan sampel G 95.76%.

Keywords


Adsorpsi, Karbon Aktif, Logam Fe(II), UV-Vis, Limbah Laboratorium

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References


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DOI: https://doi.org/10.34312/jambchem.v2i1.7055

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