Putra, Roger Permata (2025) Analisis Pengaruh Penambahan Massa Magnetic Biochar Dari Limbah Ampas Kopi Terhadap Sifat Adsorpsi Komposit ZnFe2O4/Magnetic Biochar Sebagai Adsorben Logam Berat Cd2+ dan Pb 2+. Other thesis, Institut Teknologi Sepuluh Nopember.
![[thumbnail of 5011211025-Undergraduate_Thesis.pdf]](http://repository.its.ac.id/style/images/fileicons/text.png) |
Text
5011211025-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 April 2027. Download (9MB) | Request a copy |
Abstract
Sebagai negara penghasil kopi terbesar kedua di kawasan Asia-Pasifik, Produksi kopi pada tahun 2020-2024 di Indonesia terus meningkat. Seiring dengan peningkatan produksi, konsumsi kopi di dalam negeri juga ikut meningkat secara signifikan. Namun, dibalik pertumbuhan industri kopi ini, terdapat masalah lingkungan akibat limbah ampas kopi yang menumpuk. Namun, limbah ampas kopi ini memiliki potensi besar untuk diolah menjadi biochar, sebuah material yang ramah lingkungan dan juga efektif dalam mengurangi pencemaran logam berat Cd2+ dan Pb2+ di perairan dengan metode adsorpsi. Namun, produk biochar masih memiliki keterbatasan dalam melakukan adsorpsi limbah logam berat. Sehingga perlu dilakukan modifikasi menjadi magnetic biochar. Karena pada magnetic biochar ada ikatan Fe-O, maka secara signifikan dapat meningkatkan kapasitas adsorpsi dari biochar. Selain itu, pada penelitian ini juga ditambahkan Zn karena kandungan Zn adalah agen modifikasi yang efektif dan berbiaya rendah untuk meningkatkan gugus fungsi sehingga dapat meningkatkan kinerja adsorpsi logam berat. Metode penelitian ini adalah eksperimen, terdiri dari sintesis magnetic biochar, sintesis komposit ZnFe2O4/MB dengan variasi penambahan massa magnetic biochar 2, 3, dan 4 gram. Kemudian dilakukan pengujian karakterisasi material meliputi uji analisis proximate, XRD, FTIR, SEM/EDX, BET, dan performa adsorpsi menggunakan AAS. Berdasarkan hasil pengujian karakterisasi menunjukkan bahwa komposit ZnFe2O4/Magnetic biochar berhasil disintesis. Pada hasil pengujian XRD terdapat beberapa puncak pada 2θ = 18°, 30°, 35°, 56°, 62°, dan 74°. Adanya pola difraksi ini menunjukan adanya senyawa ZnFe2O4 pada material magnetic biochar. Pada hasil pengujian FTIR terdapat beberapa gugus fungsi yang terbentuk selama proses sintesis komposit ZnFe2O4/MB yaitu gugus fungsi -OH, -CH, CC, C=O, C=C, C-O, Fe-O, dan Zn-O. Selanjutnya, pada hasil pengujian SEM didapatkan data gambar morfologi dari material komposit ZnFe2O4/MB yang menunjukan adanya perubahan struktur permukaan kasar dan berpori. Hasil pengujian EDX didapatkan unsur-unsur utama penyusun material komposit seperti C, O, Fe, dan Zn yang mengindikasikan komposit ZnFe2O4/MB. Pada hasil pengujian BET diperoleh nilai surface area magnetic biochar yaitu sebesar 382.564 m2/g dengan ukuran pori sebesar 1.746 nm yang termasuk jenis mikropori. Berdasarkan hasil uji AAS didapatkan data bahwa komposit ZnFe2O4/Magnetic biochar dengan penambahan massa 4 gram memiliki tingkat efisiensi adsorpsi logam berat Cd2+ dan Pb2+ berturut-turut sebesar 43.5% dan 49.3%
================================================================================================================================
As the second largest coffee producing country in the Asia-Pacific region, coffee production in 2020-2024 in Indonesia continues to increase. Along with the increase in production, domestic coffee consumption has also increased significantly. However, behind the growth of the coffee industry, there are environmental problems due to the accumulation of coffee grounds waste. However, this coffee grounds waste has great potential to be processed into biochar, an environmentally friendly material that is also effective in reducing Cd2+ and Pb2+ heavy metal pollution in waters by adsorption method. However, biochar products still have limitations in adsorbing heavy metal waste. So it is necessary to modify it into magnetic biochar. Because there is Fe-O bond in magnetic biochar, it can significantly increase the adsorption capacity of biochar. In addition, in this study also added Zn because Zn content is an effective and low-cost modification agent to increase functional groups so as to improve heavy metal adsorption performance. This research method is experimental, consisting of magnetic biochar synthesis, ZnFe2O4/MB composite synthesis with variation of magnetic biochar mass addition of 2 , 3 , and 4 gram. Then material characterization testing was carried out including proximate analysis, XRD, FTIR, SEM/EDX, BET, and adsorption performance using AAS. Based on the results of characterization testing, it shows that the ZnFe2O4/MB composite was successfully synthesized. In the XRD test results there are several peaks at 2θ = 18°, 30°, 35°, 56°, 62°, and 74°. The existence of this diffraction pattern indicates the presence of ZnFe2O4 compounds in magnetic biochar material. In the FTIR test results, there are several functional groups formed during the synthesis process of the ZnFe2O4/MB composite, namely the -OH, -CH, CC, C=O, C=C, C-O, Fe-O, and Zn-O functional groups. Furthermore, the SEM test results obtained morphological image data from the ZnFe2O4/MB composite material which shows a change in the rough and porous surface structure. EDX test results obtained the main elements of the composite material such as C, O, Fe, and Zn which indicate the ZnFe2O4/MB composite. In the BET test results, the surface area value of magnetic biochar is 382.564 m2/g with a pore size of 1,746 nm which includes micropores. Based on the results of the AAS test, it was found that the ZnFe2O4/MB composite with a mass addition of 4 grams had a heavy metal adsorption efficiency level of Cd2+ and Pb2+ of 43.5% and 49.3%, respectively.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Adsorpsi , Ampas Kopi, Logam Berat, Magnetic Biochar, Zn, Adsorption, Heavy Metal, Magnetic Biochar, Spent Coffee Grounds, Zn. |
| Subjects: | T Technology > T Technology (General) T Technology > TD Environmental technology. Sanitary engineering T Technology > TD Environmental technology. Sanitary engineering > TD195.B56 Biomass energy T Technology > TD Environmental technology. Sanitary engineering > TD420 Water pollution T Technology > TD Environmental technology. Sanitary engineering > TD430 Water--Purification. T Technology > TD Environmental technology. Sanitary engineering > TD433 Water treatment plants |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Roger Permata Putra |
| Date Deposited: | 24 Jan 2025 03:47 |
| Last Modified: | 24 Jan 2025 03:47 |
| URI: | http://repository.its.ac.id/id/eprint/116780 |
Actions (login required)
 |
View Item |