CD Skripsi

Penentuan Model Kesetimbangan Adsorpsi Ion Pb(Ii) Menggunakan Regenerated Spent Bleaching Earth (Rsbe)

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ABSTRACT
Spent bleaching earth (SBE) is a waste produced by the bleaching unit in the palm oil
refinery industry. One of the efforts to tackle SBE waste is regenerated into
regenerated spent bleaching earth (RSBE) which can be used as an adsorber of
heavy metals in water waste such as Pb(II) from industry. This study aims to
determine the characteristics of the SBE and RSBE, the adsorption equilibrium time,
the adsorption capacity of the RSBE with variations in the concentration of Pb(II) ion
and the adsorption temperature and determine the appropriate adsorption isotherm
model. In this study, SBE was regenerated by extracting oil by soxletation at 72oC for
5 hours with n-hexane solvent, followed by washing with 3% HCl and then physically
activated at 470oC for 12 hours. A total of 1 gram of RSBE was mixed with Pb(II)
solution with a volume of 100 ml at various concentrations (20, 30 and 40 ppm) and
adsorption temperatures (40, 50 and 60°C). The results showed that the
characteristics of RSBE increased compared to SBE, the surface area increased from
15,94 m2/g to 165,88 m2/g, the average pore diameter increased from 2,63 nm to 6,90
nm and the total pore volume also increased from 0,05 cc/g to 0,21 cc/g. The
absorption of Pb(II) ion by RSBE reaches equilibrium after 150 minutes contact time
and the adsorption that occurs follows the Langmuir isotherm adsorption model with
a correlation coefficient (R2) value of 0,9935 and a maximum absorbing capacity
value of 4,29 mg Pb(II)/g RSBE that occurs at variations in the concentration of 40
ppm and a temperature of 60°C.
Keywords: adsorption, adsorption isotherm, Pb(II) ion, RSBE, SBE.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

07 02. 120 (0060)

Penerbit

Pekanbaru : Universitas Riau – Fakultas Teknik – Teknik Kimia., 2020

Deskripsi Fisik

ix, 77 hlm.; ill.: 29 cm

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

07 02. 120 (0060)

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 KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Daus

Versi lain/terkait

Lampiran Berkas

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