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All Journal Jurnal Sapa Laut Acta Chimica Asiana
Alrum, Armid
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Agriculture, Biological Sciences & Forestry Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Environmental Science

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TINGKAT KONTAMINASI LOGAM BERAT Fe DAN Zn BERDASARKAN UKURAN SEDIMEN DI PERAIRAN POLEANG TIMUR Sakthyar, Sakthyar; Alrum, Armid; Emiyarti, Emiyarti
Jurnal Sapa Laut Vol 8, No 4: November 2023
Publisher : Fakultas Perikanan dan Ilmu Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jsl.v8i4.47264

Abstract

Logam berat adalah unsur logam yang mempunyai massa jenis Iebih besar dari 5 gr/cm3. Logam berat yang terdapat di perairan berasal dari sumber alami berupa pelapukan bebatuan dan aktivitas vulkanik. Selain itu, logam berat masuk ke perairan melalui sumber antropogenik yang terkait dengan aktivitas manusia seperti pelayaran, pertambangan, pertanian, industrialisasi, urbanisasi , limpasan air hujan ,dan limbah perkotaan.Penelitian ini bertujuan untuk mengetahui ukuran butir,kandungan logam Fe dan Zn dan tingkat pencemaran logam Fe dan Zn pada sedimen di perairan Poleang Timur.Metode yang digunakan dalam menganalisis ukuran butir di sedimen menggunakan metode sieving dan analisis logam berat Fe dan Zn di sedimen menggunakan metode AAS(Atomic Absorption Spectrophotometry).Hasil penelitian menunjukkan ukuran butir di sedimen memiliki tiga kategori yaitu pasir kasar, pasir sedang dan pasir halus, Kandungan logam Fe di sedimen pada stasiun 1 berkisar 2663,82 - 8553,29 mg/l dan kandungan logam Zn berkisar 42,39 - 169,00 mg/l. Pada Stasiun 2 kandungan logam Fe berkisar 2835,06 - 3122,25 mg/l dan kandungan logam Zn berkisar 24,15 - 154,49 mg/l.sedangkan pencemaran logam Fe dan Zn pada perairan poleang timur tidak terindikasi tercemar atau terkontaminasi. Kata kunci : Logam berat, Sedimen, Kontaminasi.
Free solvent isolation of Fe3O4 from magnetic material iron sand utilizing high-energy ball milling as adsorben remazol turquoise blue G-133 and remazol red RB-133 Ramadhan, Muhammad; Fahmiati, Fahmiati; Alrum, Armid; La Ode Muhammad Zuhdi, Mulkiyan
Acta Chimica Asiana Vol. 6 No. 1 (2023)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

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Abstract

The extraction of Fe3O4 from iron sand frequently utilizes a highly concentrated HCl solution, which is hazardous to the environment. The high-energy ball milling method of separating Fe3O4 from iron sand might produce Fe3O4 without acids and maintains its magnetic characteristics with a yield of 81.87%. The FTIR results suggest that the Fe3O4 separation procedure with high-energy ball milling was effective in eliminating the silica pick after activation with 2 M NaOH, which was confirmed by SEM-EDS data indicating there was no silica on the material's surface. Fe3O4 was separated, allowing use as an adsorbent to treat textile industry waste such as Remazol Turquoise Blue G-133 and Remazol Red RB-133. The adsorption of Fe3O4 on these two dyes occurred at pH 5, and as adsorbate concentration, contact time, and adsorption temperature of Fe3O4 were raised, the adsorption capacity increased. Remazol Turquoise Blue G-133 and Remazol Red RB-133 have qmax values of 16.75 and 1.43 mg/g, respectively. The isothermal adsorption of Fe3O4 for the two dyes quite follows the Freundlich isothermal with KF values of 1.87 and 0.42 L/g and n values of 2.17 and 1.22, respectively, results suggest that the adsorption process occurs physically and forms a multilayer adsorption surface. These results are supported by data obtained from the adsorption kinetics, which shows that it follows the first-order adsorption kinetics. The dyes thermodynamics also showed positive results for ΔHo and ΔGo, indicating that the process of adsorption was endothermic and not spontaneous, but to the degree of disorder (ΔSo), Remazol Turquoise Blue G-133 outperformed Remazol Red RB-133.
Co-Authors Emiyarti Emiyarti, Emiyarti Fahmiati Fahmiati La Ode Muhammad Zuhdi, Mulkiyan Muhammad Ramadhan Sakthyar, Sakthyar