Yudisputra, Guruh Prasetya (2019) Laju adsorpsi dan pengaruh pH terhadap adsorpsi metilen biru dengan menggunakan biosorben batang Jagung termodifikasi asam sitrat. Undergraduate thesis, Universitas Islam Negeri Maulana Malik Ibrahim.
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Abstract
INDONESIA :
Batang jagung merupakan salah satu sumber biomassa dengan kadar selullosa yang cukup tinggi, sehingga dapat digunakan sebagai biosorben dalam proses adsorpsi. Modifikasi batang jagung bertujuan untuk meningkatkan kemampuan adsorpsi batang jagung. Dalam penelitian ini modifikasi batang jagung menggunakan larutan asam klorida 0,1 M dan asam sitrat 1M. Penelitian ini bertujuan untuk mengetahui kinetika adsorpsi metilen biru, kondisi optimum adsorpsi metilen biru, dan perbedaan gugus aktif batang jagung setelah modifikasi.
Tahapan penelitian ini meliputi preparasi biosorben batang jagung; demineralisasi batang jagung menggunakan asam klorida 0,1 M; aktivasi menggunakan asam sitrat 1 M; penentuan kinetika adsorpsi metilen biru; pengaruh pH terhadap adsorpsi metilen biru; dan karakterisasi batang jagung menggunakan FTIR.
Pada penelitian ini didapatkan hasil kinetika adsorpsi metilen biru mengikuti persamaan orde 2 yang menunjukkan adsorpsi berlangsung secara kimia. Keadaan optimum adsorpsi metilen biru terjadi pada pH 6 dan waktu kontak 5 jam dengan kapasitas adsorpsi 47,906 mg/g. Hasil analisis spektra IR setelah modifikasi didapatkan hasil adanya gugus baru C=O ester pada bilangan gelombang 1736 cm-1. Hal tersebut menunjukkan dihasilkannya gugus ester setelah modifikasi.
ENGLISH :
Corn stalk is one of the sources of biomass with high cellullose content, so it can be used as biosorbent in the adsorption process. Modification of corn stalks aims to improve the ability of adsorption of corn stalks. In this study, modification of corn stems using a solution of 0.1 M hydrochloric acid and 1M citric acid. This study aims to determine the methylene blue adsorption kinetics, optimum conditions for methylene blue adsorption, and differences in active groups of corn stems after modification.
The stages of this study include biosorbent preparation of corn stalks; demineralization of corn stalks using 0,1 M hydrochloric acid; activation using 1 M citric acid; determination of methylene blue adsorption kinetics; the effect of pH on methylene blue adsorption; and characterization of corn stems using FTIR.
In this study, the results of methylene blue adsorption kinetics follow the second order equation which shows the adsorption takes place chemically. The optimum condition of methylene blue adsorption occurred at pH 6 and contact time of 5 hours with an adsorption capacity of 47,906 mg / g. The results of the analysis of IR spectra after modification showed that there was a new group C = O ester at wave number 1736 cm-1. This shows the production of ester groups after modification.
Item Type: | Thesis (Undergraduate) | |||||||||
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Supervisor: | Yulianti, Eny and Mahmudah, Rif'atul | |||||||||
Contributors: |
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Keywords: | batang jagung; asam sitrat; metilen biru; kinetika adsorpsi; pengaruh pH; spektra IR; corn stalks; citric acid; methylene blue; adsorption kinetics; effect of pH; IR spectra | |||||||||
Departement: | Fakultas Sains dan Teknologi > Jurusan Kimia | |||||||||
Depositing User: | Dian Anesti | |||||||||
Date Deposited: | 04 Mar 2020 14:50 | |||||||||
Last Modified: | 04 Mar 2020 14:50 | |||||||||
URI: | http://etheses.uin-malang.ac.id/id/eprint/15171 |
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