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All Journal CHEMPUBLISH JOURNAL CHEESA: Chemical Engineering Research Articles
Nurul Gusmaini
Universitas Jambi
Chemical Engineering, Chemistry & Bioengineering Chemistry

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Nanofikasi Fraksi Tanah Gambut untuk Modifikator Nanomagnetit/AH-Kitosan sebagai Kandidat Penanggulangan Pencemaran Zat Warna Ngatijo Ngatijo; Restina Bemis; Mahya Ihsan; Nurul Gusmaini; Salim Hidayat; Rahmat Basuki
CHEMPUBLISH JOURNAL Vol. 5 No. 2 (2020): Chempublish Journal
Publisher : Universitas Jambi, Fakultas Sains dan Teknologi, Program Studi Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/chp.v5i2.11105

Abstract

The nanomagnetite/HA-Chitosan adsorbent has been successfully synthesized by the co-precipitation method. HA was synthesized from the peat soils of Geragai village, Tanjung Jabung Timur, Jambi province and chitosan isolated from marine animal shell waste around the city of Jambi. The results of FT-IR analysis showed that nanomagnetite/AH-chitosan has a spectra which was combination of the characteristic spectra of magnetite, HA and chitosan. Morphological analysis using SEM showed that nanomagnetite/AH-chitosan was in the form of fractal agglomerates. TEM image of magnetite/AH-chitosan showed that magnetite/AH-chitosan has nano scale magnetite core particles with a size between 4-22 nm. Crystallinity analysis showed that magnetite/AH-chitosan has 2θ characteristics of magnetite i.e., 30.1°, 35.4°, 43.1°, 57.0°, 62.68° and 74.5°. The magnetic saturation strength (Ms) decreased from 80.23 (magnetite) to 30.63 (magnetite/AH-chitosan) due to the coating of AH-chitosan on magnetite which was still effectively attracted by the external magnet with 96% effectiveness of adsorption of 25 mL Methylene Blue 10 mg/L.
Adsorpsi Methylene Blue pada Nanopartikel Magnetit tersalut Asam Humat: Kajian Isoterm dan Kinetika Ngatijo Ngatijo; Nurul Gusmaini; Restina Bemis; Rahmat Basuki
CHEESA: Chemical Engineering Research Articles Vol 4, No 1 (2021)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v4i1.8433.51-64

Abstract

Nanopartikel magnetit merupakan suatu material dengan sifat magnet yang stabil dan memiliki luas permukaan tinggi. Penyalutan nanopartikel magnetit dengan asam humat (AH) dilaporkan dapat meningkatkan stabilitas, kapasitas adsorpsi, dan kemudahan pemisahan pasca adsorpsi. Penelitian ini bertujuan untuk melakukan sintesis Nanopartikel Magnetit tersalut Asam Humat (NpMAH) dengan metode ko-presipitasi dan menentukan parameter adsorpsinya sebagai adsorben Methylene Blue (MB) dengan metode batch. Keberhasilan sintesis ditunjukkan oleh karakterisasi NpMAH dengan FT-IR, XRD, SEM, dan VSM. Parameter isoterm adsorpsi mengindikasikan bahwa adsorpsi terjadi secara lapis tunggal dengan kapasitas adsorpsi sebesar 56,96 mg/g dan energi adsorpsi sebesar 26,31 kJ/mol pada pH optimum 6,0. Parameter kinetika menunjukkan bahwa adsorpsi mengikuti model kinetika Ho (pseudo orde kedua) dengan konstanta laju adsorpsi (kHo) sebesar 12688,71 g/molmenitdan perhitungan MB yang teradsorpsi pada kesetimbangan (qe) sebesar 2,96×10-5 mol/g. Perhitungan energi adsorpsi menggunakan model kinetika Santosa dan RBS berturut-turut 25,67 kJ/mol dan 41,25 kJ/mol.
Co-Authors Mahya Ihsan Ngatijo Ngatijo Rahmat Basuki Rahmat Basuki Restina Bemis Salim Hidayat