Mathilda, Tamara and Dr. Ir. Anang Lastriyanto,, M.Si and Bernadeta Ayu Widyaningrum,, M.Si (2021) Pemanfaatan Bagasse Sorgum dengan Modifikasi NaOH sebagai Adsorben Pereduksi Kontaminan Logam Berat Pb(II). Sarjana thesis, Universitas Brawijaya.
Abstract
Biomassa dari hasil limbah pertanian yaitu bagasse sorgum dapat digunakan menjadi suatu adsorben yang dimodifikasi dengan penambahan alkali seperti NaOH untuk mereduksi kontaminan ion logam berat Pb. Kandungan selulosa di dalam bagasse sorgum memiliki potensi yang cukup besar sebagai adsorben karena gugus hidroksil (-OH) yang terikat dapat berinteraksi dengan ion logam berat. Tujuan penelitian ini adalah untuk menentukan konsentrasi NaOH pada adsorben, waktu kontak, dosis adsorben, konsentrasi awal logam berat, pH, dan temperatur terhadap proses adsorpsi logam berat Pb dari adsorben bagasse sorgum, menganalisis karakteristik gugus fungsi, morfologi, serta ukuran luas permukaan dan pori dari adsorben bagasse sorgum, serta mempelajari hasil penambahan NaOH pada penampakan adsorben bagasse sorgum serta kemampuannya dalam mengadsorpsi logam berat Pb. Penelitian ini menggunakan bagasse sorgum berukuran lolos 40 mesh yang kemudian dimodifikasi menggunakan NaOH untuk proses adsorpsi logam berat Pb(II). Berdasarkan hasil penelitian, didapatkan kondisi adsorpsi yaitu konsentrasi NaOH pada adsorben sebesar 0.04 M, waktu kontak selama 15 menit, dosis adsorben 6 g/L, dengan konsentrasi awal logam Pb sebesar 80 mg/L, pada pH 5, dan temperature 35oC dengan kapasitas adsorpsi sebesar 8.1530 mg/g dan persentase kehilangan mencapai 60.1408%. Penambahan NaOH menunjukkan hasil yang lebih efektif dibandingkan adsorben tanpa penambahan NaOH. Gugus fungsi hidroksil terbentuk sehingga memperbanyak potensi adsorben menyerap adsorbat. Penambahan modifikasi NaOH juga membuka pori-pori pada permukaan bagasse sorgum yang meningkatkan kemampuan adsorpsi adsorben serta membersihkan kotoran atau impurities yang menutup lubang pori adsorben.
English Abstract
Biomass from agricultural waste, such as sorghum bagasse, can be used as an adsorbent with the addition of NaOH to reduce heavy metal ion Pb contaminants. The cellulose content in sorghum bagasse has considerable potential as an adsorbent because the hydroxyl group (-OH) can interact with heavy metal ions. The purpose of this study was to determine the concentration of NaOH on the adsorbent, contact time, adsorbent dose, initial concentration of Pb(II), pH, and temperature on the lead (Pb) adsorption process from bagasse sorghum adsorbent, to analyze the characteristics of functional groups, morphology, and surface and pore sizes of bagasse sorghum adsorbent, as well as studying the results of the addition of NaOH on the appearance of the sorghum bagasse adsorbent and its ability to adsorb heavy metal Pb. This research used bagasse sorghum with a size of 40 mesh which was then modified using NaOH for the Pb(II) heavy metal adsorption process. Based on the results of the research, the adsorption conditions were obtained with the concentration of NaOH on the adsorbent of 0.04 M, contact time for 15 minutes, adsorbent dose of 6 g/L, with an initial concentration of Pb of 80 mg/L, at pH 5, and a temperature of 35oC with adsorption capacity of 8.1530 mg/g and the percentage loss was 60.1408%. The addition of NaOH showed more effective results than the adsorbent without the addition of NaOH. The hydroxyl functional group is formed in order to increase the potential of the adsorbent to absorb the adsorbate. The addition of NaOH also opens the pores on the surface of the sorghum bagasse which increases the adsorption ability of the adsorbent, also cleans the dirt or impurities that cover the pores of the adsorbent.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0521100295 |
| Uncontrolled Keywords: | Bagasse Sorgum, NaOH, Adsorpsi, Logam Berat Timbal Pb(II),Bagasse Sorghum, NaOH, Adsorption, Heavy Metal Lead Pb(II) |
| Subjects: | 600 Technology (Applied sciences) > 630 Agriculture and related technologies |
| Divisions: | Fakultas Teknologi Pertanian > Keteknikan Pertanian |
| Depositing User: | soegeng sugeng |
| Date Deposited: | 09 Feb 2022 01:31 |
| Last Modified: | 23 Feb 2022 07:26 |
| URI: | http://repository.ub.ac.id/id/eprint/189587 |
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