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All Journal Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Makara Journal of Technology JURNAL REKAYASA KIMIA & LINGKUNGAN
Nurul Faiqotul Himma, Nurul Faiqotul
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering

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ADSORPSI ION KALSIUM MENGGUNAKAN BIOMASSA ECENG GONDOK (Eichhornia crassipes) DIREGENERASI HCL Rakhmania, Citra Dewi; Khaeronnisa, Indah; Ismuyanto, Bambang; Nanda, Julia; Himma, Nurul Faiqotul
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 1 No. 1 (2017)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (608.667 KB) | DOI: 10.21776/ub.rbaet.2017.001.01.03

Abstract

Water hyacinth (Eichhornia crassipes) is known as an aquatic weed that has rapid growth. However, the water hyacinth has the ability to remove metals from water as it acts as a natural adsorbent. Calcium ion is one of the metallic ions which can cause hardness and scaling in high temperature, resulting in a decrease of the efficiency of industrial equipment. In this research, the water hyacinth was regenerated with HCl and used as an adsorbent to adsorb calcium ion. The effect of HCl concentration and calcium ion concentration on the adsorption capacity of calcium ion was investigated. The results show that adsorption capacity of calcium ion increased as the concentration of HCl increased up to 3 M. At higher concentration of HCl, 4 M and 5 M, the adsorption capacity decreased because some functional groups of hydroxyl and carboxyl which play an important role in adsorption process are cleavage. Maximum adsorption capacity was achieved at 38,733 mg Ca/gr adsorbent with regeneration of adsorbent at HCl 3M and 500 ppm of calcium ion
PENGARUH PENAMBAHAN KITOSAN TERHADAP EFEKTIVITAS PROSES KOAGULASI MENGGUNAKAN BESI (III) KLORIDA HEKSAHIDRAT Junisu, Belda Amelia; Handayani, Evi; Hidayati, AS Dwi Saptati Nur; Ismuyanto, Bambang; Himma, Nurul Faiqotul
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 1 No. 2 (2017)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1027.749 KB) | DOI: 10.21776/ub.rbaet.2017.001.02.04

Abstract

Air gambut merupakan sumber air potensial yang dapat digunakan sebagai air bersih jika diolah terlebih dahulu, dimana penyisihan asam humat menjadi perhatian utama karena kandungannya yang tinggi menyebabkan kekeruhan, intensitas warna yang tinggi, dan sifat asam pada air gambut. Salah satu metode yang dapat digunakan untuk penyisihan asam humat dalam air gambut adalah koagulasi dengan menggunakansenyawa kimia berupa garam logam hidrolisis sebagai koagulan. Pada penelitian ini, Besi (III) Klorida (FeCl3.6H2O) digunakan sebagai koagulan untuk penyisihan asam humat.Penentuan kondisi optimum koagulasi dilakukan dengan variasi pH (6–9) dan dosis koagulan FeCl3.6H2O (20–100 ppm). Koagulasi kemudian dilakukan dengan penambahan kitosan sebagai koagulan pendukung untuk meningkatkan efektivitas proses koagulasi, dimana dosis kitosan divariasikan pada rentang 10–50 ppm.Diperoleh nilai pH optimum adalah pH 7 dan dosis FeCl3.6H2O sebesar 80 ppm dengan penurunan warna sebesar 88,08% dan kekeruhan sebesar 97,08%. Sedangkan dengan adanya penambahan kitosan hingga 50 ppm, penurunan warna dan kekeruhansemakin meningkat hingga  94,75% dan 99,07%.
Preparation and Characterization of Interfacially Polymerized Polyamide Membrane for Dye Removal Himma, Nurul Faiqotul; Ismuyanto, Bambang; Hidayati, AS; Juliananda, Juliananda; Rohmawati, Hidayatul; Budiarta, Irfan
Jurnal Rekayasa Kimia & Lingkungan Vol 16, No 1 (2021): Jurnal Rekayasa Kimia & Lingkungan (June, 2021)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v16i2.20337

Abstract

Interfacial polymerization of polyamide was conducted using hydrophobic and hydrophilic membrane support. The effects of monomer concentration were investigated, and the resulting thin-film composite membranes were tested for their performance in dye removal using different flow configurations. The results showed that a dense polyamide layer was successfully formed on the hydrophilic support, while a polyamide layer with a very loose structure was formed on the hydrophobic support. The polyamide layer became smoother and more hydrophilic as the concentration of trimesoyl chloride was increased, leading to increased permeate flux and reduced dye rejection. The highest sunset yellow rejection of 45.7% with a permeate flux of 4.9 L/m2.h was obtained when the polyamide layer was formed from trimesoyl chloride concentration of 0.05 w/v% (a high amine to acid chloride monomer ratio of 20) and the filtration was in cross-flow configuration.
Removal of Hexavalent Chromium from Water by Chitosan-Enhanced Ultrafiltration Indiasih, Putu A. Y.; Syaifudin, Anindita D.; Himma, Nurul Faiqotul; Ismuyanto, Bambang
Makara Journal of Technology Vol. 27, No. 1
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Polymer-enhanced ultrafiltration has gained increasing attention as a selective separation process to remove small solutes, such as metal ions, from water or wastewater. Hexavalent chromium Cr(VI) is one of the metal ions in wastewater that has received considerable attention because of its toxicity. Chitosan was used in this study as the polymer to bind Cr(VI) to enhance its removal by ultrafiltration. The effects of chitosan-to-Cr(VI) ratio on Cr(VI) rejection and permeate flux were investigated. In addition, the fouling tendency was evaluated. Results showed that the addition of chitosan with a mass ratio of 12.5 increased the Cr (VI) rejection from 28% to 75% with a slight reduction in permeate flux from 12.5 L.m−2.h−1 to 9.3 L.m−2.h−1. Moreover, the reduced flux after 100 min of operation could be recovered using the backwash procedure by 89% compared to the initial flux.
Co-Authors AS Dwi Saptati Nur Hidayati, AS Dwi Saptati Nur Bambang Ismuyanto Belda Amelia Junisu, Belda Amelia Budiarta, Irfan Citra Dewi Rakhmania, Citra Dewi Evi Handayani, Evi Hidayati, AS Indah Khaeronnisa, Indah Indiasih, Putu A. Y. Julia Nanda, Julia Juliananda, Juliananda Rohmawati, Hidayatul Syaifudin, Anindita D.