CD Skripsi

Penyisihan Logam Cr (Vi) Pada Air Limbah Electroplating Menggunakan Adsorben Hollow Carbon Fiber Dari Daun Akasia (Acacia Mangium Willd)

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Electroplating industry wastewater contains various heavy metals, one of which is hexavalent chromium metal (Cr VI). The high content of Cr (VI) metal ions in wastewater will have an impact on humans such as skin infections and can damage environmental ecosystems. A widely used method to remove Cr(VI) metal ions in wastewater is adsorption. Adsorption is the process of adsorbing a substance on the surface of another substance due to the molecular attractive force that occurs between the adsorbate and the adsorbent. One of the adsorbents that can be used to remove Cr (VI) metal ions is hollow carbon fibre made from Acacia leaves. This study aims to determine the optimum dose and time of removal of Cr (VI) metal ions in electroplating wastewater using hollow carbon fibre adsorbent and determine the kinetics and isotherms. The research was conducted by varying the adsorbent dose of 2; 2.5; 3; 3.5; 4 and 4.5 g/L, and contact time of 5, 10, 15, 30, 60, 90, 120 and 180 minutes. Based on the results of the proximate test, the values of ash, water and fly matter content were 0.17%, 1.79% and 3.79% respectively with a surface area of hollow carbon fibre of 291.507 m2/g. The removal efficiency of Cr (VI) metal ions was found to be 98.89% at an adsorbent dose of 4.5 g/L with a contact time of 120 minutes. The adsorption kinetics model in this study followed the pseudo second order kinetics model with a K2 value of 1.558 g/mg.min-1. The adsorption isotherm followed the Freundlich isotherm model with a KF value of 23.682 (mg/g)(L/mg)1/n and n of 1.0124. The results showed that the hollow carbon fibre of Acacia leaves is effective in removing electroplating wastewater and meets the quality standards.

Keywords: Cr (VI), adsorption, hollow carbon fiber, kinetics, isotherm

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1907111220

Penerbit

Pekanbaru : Universitas Riau - F. Teknik - Teknik Lingkungan., 2024

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1907111220

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK LINGKUNGAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

Vina

Versi lain/terkait

Lampiran Berkas

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