CD Skripsi

Pengaruh Konsentrasi Adsorbat Dan Suhu Pada Adsorpsi Logam PB2+ Dan CU2+ Menggunakan Adsorben Karbon Aktif Tandan Kosong Sawit

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Industrial progress has caused environmental issues such as the generation of liquid waste. Liquid waste from industries contains various harmful chemical compounds that are sparingly soluble, such as lead from pulp and paper industries and copper from electroplating industries. The objective of this research is to determine the optimal adsorbate concentration and temperature for the adsorption of heavy metals Pb2+ and Cu2+, calculating the removal efficiency and adsorption capacity, and determining the adsorption isotherms and thermodynamics.The constant variables used were pH 5, contact time of 60 minutes, adsorbent dosage of 0.5 g/100 mL with stirring speed at 60 rpm. The variables tested in this study were temperature (35°C, 40°C, 45°C) and adsorbate concentration (10, 20, 30, 40 mg/L). The results showed that for both metals, the optimal adsorbate concentration was 10 mg/L and the optimal temperature was 45°C. The highest efficiencies in Pb2+ and Cu2+ adsorption were 85.38% and 81.93%, respectively, with maximum adsorption capacities of 6.5 mg/L and 7.82 mg/L.The adsorption of Pb2+ and Cu2+ fitted well with both Langmuir (Pb2+ R2 range: 0.987-0.997, Cu2+ R2 range: 0.993-0.999) and Freundlich isotherm models (Pb2+ R2 range: 0.990-0.998, Cu2+ R2 range: 0.984-0.996). Thermodynamic analysis indicated spontaneous adsorption with ΔGo values of -30.02 to -32.51 kJ mol-1 for Pb2+ and -31.86 to -35.06 kJ mol-1 for Cu2+. The adsorption was found to be endothermic with ΔHo values of 46.55 kJ mol-1 for Pb2+ and 67.03 kJ mol-1 for Cu2+, and an increase in disorder at the adsorbent-adsorbate interface during the adsorption process with ΔSo values of 248.59 J mol-k-1 for Pb2+ and 321.59 J mol-1k-1 for Cu2+.

Keywords : Adsorption, activated carbon of empty palm fruit bunches, adsorption
isotherm, adsorption thermodynamics

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1907113911

Penerbit

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

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1907113911

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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