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All Journal JURNAL KIMIA SAINS DAN APLIKASI Prosiding Seminar Nasional MIPA JURNAL PIJAR Jurnal Kimia dan Kemasan CHEMPUBLISH JOURNAL IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Indonesian Journal of Chemistry Jurnal Kimia dan Kemasan Molekul: Jurnal Ilmiah Kimia Bulletin of Chemical Reaction Engineering & Catalysis
Bambang Rusdiarso
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Universitas Gadjah Mada, Sekip Utara, Yogyakarta 55281
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics

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Enhanced Capacity and Easily Separable Adsorbent of Dithizone-immobilized Magnetite Zeolite for Pb(II) Adsorption Susiana, Carissa Ayu; Rusdiarso, Bambang; Mudasir, Mudasir
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.90914

Abstract

In this study, magnetic natural zeolite (ZTM) was prepared using the coprecipitation method and dithizone was then immobilized on its surface in less toxic medium of alkaline to yield dithizone-immobilized magnetic zeolite (ZTM-Dtz). The synthesized ZTM-Dtz was characterized by FTIR and XRD, indicating that dithizone was successfully immobilized on the surface of ZTM. Vibrating sample magnetometer measurements showed superparamagnetic properties of either ZTM or ZTM-Dtz with magnetization values of 7.35 and 11.49 emu g−1, respectively. The adsorption kinetics of Pb(II) on both adsorbents followed a pseudo-second-order and their adsorption isotherms were properly described by the Langmuir model. The adsorption capacity of ZTM and ZTM-Dtz were 6.94 and 38.46 mg g−1, respectively, suggesting that dithizone immobilization enhanced the adsorbent capacity more than 5 times. The interaction mechanism between Pb(II) metal ion and ZTM was dominated by ion exchange, whereas that of ZTM-Dtz was mostly hydrogen bonds and complexation. The synthesized material is promising to be developed for the adsorption of heavy metal ions such as Pb(II) because it provides a high adsorption capacity and the adsorbents can be easily separated magnetically after application.
Ekstraksi Adsorben Ramah Lingkungan dari Matriks Biologi: Asam Humat Tinja Kuda (AH-TK): Asam Humat Tinja Kuda (AH-TK) Basuki, Rahmat; Santosa, Sri Juari; Rusdiarso, Bambang
Chempublish Journal Vol. 2 No. 1 (2017): Chempublish Journal
Publisher : Department of Chemistry, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (637.815 KB)

Abstract

Telah berhasil dilakukan ekstraksi asam humat dari serbuk tinja kuda kering dan serbuk tinja kuda yang direndam terlebih dahulu dengan disinfektan. Metode ekstraksi dilakukan berdasarkan prosedur Stevenson (1994) di bawah atmosfer udara. Pemurnian dilakukan dengan larutan 0,1 M HCl/0,3 M HF (1:1). Hasil ekstraksi adalah 4 jenis asam humat dari tinja kuda yaitu, asam humat tinja kuda kotor (AHTK), asam humat tinja kuda murni (AHTK-Mur), asam humat tinja kuda desinfektan kotor (AHTK-Dis), dan asam humat tinja kuda desinfektan murni (AHTK-Dis-Mur). Karakterisasi keempat asam humat dari tinja kuda menggunakan spektrofotometer UV-Vis dan FT-IR menunjukkan pola serapan dan puncak-puncak serapan yang mirip dengan asam humat pembanding dari tanah gambut, yaitu asam asam humat tanah gambut (AHTG) dan asam humat tanah gambut murni (AHTG-Mur) yang merupakan pola/serapan karakteristik asam humat berdasarkan Stevenson (1994). Kadar abu AHTG, AHTG-Mur, AHTK, AHTK-Mur, AHTK-Dis, AHTK-Dis-Mur masing-masing sebesar 7,31; 1,20; 15,66; 0,99; 18,02; dan 1,82 % (b/b). Keasaman total AHTK, AHTK-Mur, AHTK-Dis, AHTK-Dis-Mur berturut-turut adalah 400,6; 415,3; 282,5; dan 333,1 cmol/kg. Hasil tersebut menunjukkan AHTK-Mur memiliki keasaman dan kadar abu paling baik.
Co-Authors Ahmad Budi Junaidi Dewi Agustiningsih, Dewi Dwi Siswanta Eko Sri Kunarti Endang Tri Wahyuni Hasnowo, Lutfi Aditya Indriana Kartini Mudasir Mudasir Narsito Narsito Ngatijo Ngatijo Normah Ceristrisani Nurul Hidayat Aprilita Nuryono Nuryono Pambudi, Fajar Inggit Rahmat Basuki Rahmat Basuki Rahmat Basuki Rambat Rambat Rambat, Rambat Rusli, Stefen Saprini Hamdiani Sri Juari Santosa Sri Juari Santosa Sri Juari Santosa Suhartana Suhartana Susiana, Carissa Ayu