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All Journal POSITRON Jurnal Kimia Khatulistiwa BERKALA SAINSTEK Jurnal Sains dan Teknologi Alchemy : Journal of Chemistry Indonesian Journal of Chemical Science Indonesian Journal of Pure and Applied Chemistry CHEESA: Chemical Engineering Research Articles Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Jurnal Teknologi Lingkungan Lahan Basah
Zaharah, Titin Anita
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Nursing Physics Public Health

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KARAKTERISASI ADSORBEN KOMPOSIT SELULOSA - LIMBAH KARET ALAM UNTUK PENURUNAN KADAR COD DAN MINYAK LEMAK LCPKS Rahmayani, Ika; Zaharah, Titin Anita; Alimuddin, Andi Hairil
Jurnal Kimia Khatulistiwa Vol 8, No 3 (2020): Jurnal Kimia Khatulistiwa
Publisher : Jurnal Kimia Khatulistiwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (697.253 KB)

Abstract

Karakterisasi adsorben dilakukan terhadap produk sintesis komposit selulosa eceng gondok (Eicchornia crassipes)-limbah karet alam. Adsorben dikompositkan dengan tujuan untuk meningkatkan kinerja dari selulosa eceng gondok dan limbah karet alam sebagai adsorben untuk menurunkan kadar Chemical Oxygen Demand (COD) dan minyak lemak pada limbah cair kelapa sawit. Kondisi optimum dari adsorben dalam penurunan kadar COD dan minyak lemak dilakukan dengan variasi massa (selulosa : karet) 1:1, 1:2 dan 2:1 dan variasi waktu kontak selama 15, 30, 45, 60 dan 75 menit. Hasil karakteristisasi menggunakan spektroskopi inframerah menunjukan adanya gugus fungsi O-H dari selulosa pada bilangan gelombang 3425,58 cm-1, dan gugus C=C dari karet alam pada bilangan gelombang 1635,64 cm-1. Data ini menunjukan bahwa hasil sintesis tersebut adalah komposit selulosa-karet alam. Kondisi optimum dari adsorben untuk mengikat zat organik terjadi pada variasi massa (selulosa : karet) 1:1 dan waktu kontak selama 30 menit dengan % efisiensi adsorbsi sebesar 83%. Kondisi optimum adsorben untuk mengikat minyak lemak terjadi pada variasi massa (selulosa : karet) 1:2 dan waktu kontak selama 30 menit dengan %efisiensi adsorbsi sebesar 84%. Hasil ini menunjukan bahwa komposit selulosa – limbah karet alam dapat dijadikan adsorben untuk penurunan kadar COD dan minyak lemak pada limbah cair pabrik kelapa sawit.Kata Kunci : selulosa, eceng gondok, karet alam, komposit
Nanosilika Berbahan Dasar Batu Padas sebagai Adsorben Zat Warna Sintetis Rhodamin B Shofiyani, Anis; Rahmiyati, Yusnita; Zaharah, Titin Anita
Indonesian Journal of Chemical Science Vol 9 No 3 (2020)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijcs.v9i3.42027

Abstract

Batu padas merupakan batuan sedimen yang mengandung 70-95% silika. Komposisi silika yang cukup tinggi tersebut memungkinkannya dikembangkan sebagai bahan dasar sintesis nanosilika. Pada penelitian ini sintesis nanosilika dilakukan dengan metode sol-gel melalui tahapan hidrolisis natrium silikat dan kondensasi gel silika. Karakterisasi nanosilika dilakukan dengan metode difraksi sinar-X (XRD), scanning dengan mikroskop elektron (SEM) dan spektrofotometri inframerah (FTIR). Nanosilika yang dihasilkan selanjutnya digunakan untuk adsorpsi zat warna sintetis (ZWS) rhodamin B dari larutan pada pH yang divariasi 2-9. Data XRD menunjukkan bahwa silika yang dihasilkan merupakan campuran mineral kuarsa dan kristobalit, dan citra SEM memperlihatkan ukuran partikel sebesar 74-123 nm yang sebagian besar dijumpai dalam bentuk aglomerat. Adsorpsi rhodamin B pada nanosilika hasil sintesis tercapai optimum pada pH 4-6 dengan kapasitas maksimum adsorpsi sebesar 7.80 mg/g adsorben.
Nanosilika Berbahan Dasar Batu Padas sebagai Adsorben Zat Warna Sintetis Rhodamin B Shofiyani, Anis; Rahmiyati, Yusnita; Zaharah, Titin Anita
Indonesian Journal of Chemical Science Vol 9 No 3 (2020)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijcs.v9i3.42027

Abstract

Batu padas merupakan batuan sedimen yang mengandung 70-95% silika. Komposisi silika yang cukup tinggi tersebut memungkinkannya dikembangkan sebagai bahan dasar sintesis nanosilika. Pada penelitian ini sintesis nanosilika dilakukan dengan metode sol-gel melalui tahapan hidrolisis natrium silikat dan kondensasi gel silika. Karakterisasi nanosilika dilakukan dengan metode difraksi sinar-X (XRD), scanning dengan mikroskop elektron (SEM) dan spektrofotometri inframerah (FTIR). Nanosilika yang dihasilkan selanjutnya digunakan untuk adsorpsi zat warna sintetis (ZWS) rhodamin B dari larutan pada pH yang divariasi 2-9. Data XRD menunjukkan bahwa silika yang dihasilkan merupakan campuran mineral kuarsa dan kristobalit, dan citra SEM memperlihatkan ukuran partikel sebesar 74-123 nm yang sebagian besar dijumpai dalam bentuk aglomerat. Adsorpsi rhodamin B pada nanosilika hasil sintesis tercapai optimum pada pH 4-6 dengan kapasitas maksimum adsorpsi sebesar 7.80 mg/g adsorben.
Activated Carbon/MnO2 Composite as Uranium Adsorbent in Solution Anjarsari, Nita; Zaharah, Titin Anita; Sayekti, Endah; Yamin, Bohari Mohd.
CHEESA: Chemical Engineering Research Articles Vol. 7 No. 1 (2024)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v7i1.13863.24-35

Abstract

This research aimed to make an adsorbent from activated carbon/MnO2 (AC/MnO2) composite and examine its characteristics, adsorption capacity, and mechanism for uranyl ions. Carbon was made from Oil Palm Empty Fruit Bunches (OPEFB) through sodium acetate's carbonization and activation processes. The AC/MnO2 composite was made using the in-situ deposition method, namely by oxidizing Mn2+ compounds to Mn4+ under alkaline conditions at a temperature of ±80°C. An FTIR spectrophotometer was used to characterize the adsorbent, and a UV-Vis spectrophotometer was used to determine the content of uranyl. The results of FTIR analysis showed that MnO2 in Mn-O and Mn-O-Mn absorption was bound to activated carbon. It was also discovered that AC/MnO2 adsorbent reduced uranium content in solution in the form of uranyl ion for adsorbent mass of 2.5 grams and a contact time of 60 minutes, leading to adsorption percentages of 65.5%. The adsorption mechanism followed the Langmuir adsorption isotherm equation by forming a single layer. Meanwhile, the adsorption kinetics followed pseudo-second-order with a value of k = 6.7 g/mg.min.
Utilization of Activated Carbon/Magnesium(II) Composites in Decreasing Organic Materials Ullica, Dheasi Rani; Zaharah, Titin Anita; Silalahi, Imelda Hotmarisi
CHEESA: Chemical Engineering Research Articles Vol. 6 No. 1 (2023)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v6i1.15662.63-75

Abstract

This study aimed to determine the characteristics, adsorption capacity, and isotherm of the adsorbent AC/Mg(II) composite in decreasing organic matter in peat water. Activated carbon was produced from empty fruit bunches of oil palm containing high levels of lignocellulose. Carbon was synthesized through the carbonization process and then activated with CH3COONa. The activated sample was composited with magnesium nitrate hexahydrate through an in-situ method under alkaline conditions using NaOH. The adsorbent AC/Mg(II) composite that had been prepared was characterized using FTIR, showing the presence of Mg-O bonds at the absorption wave number of 403.12 cm-1. The results showed that the moisture content of the adsorbent was lower compared to activated carbon, namely 1.30%. Furthermore, the best mass was 2 g AC/Mg(II) with an adsorption of 2.26 mg/g and an organic matter adsorption percentage of 14.41%. Furthermore, the optimum contact time was 15 minutes with an adsorption of 2.42 mg/g and a percentage of 17.15%. The mechanism occurring in the AC/Mg(II) composite with peat water organic matter followed the Langmuir isotherm equation, which formed a monolayer. The equation gave R2, adsorption capacity (Qo), and adsorption constant (k) values of 0.9994, 0.2340 mg/g, and 0.0047, respectively.
Adsorpsi Ion Besi Pada Lindi Menggunakan Zeolit Alam Teraktivasi Asam Klorida (HCl) Zaharah, Titin Anita; Aprilianti, Wirna; Wahyuni, Nelly
Jurnal Teknologi Lingkungan Lahan Basah Vol 11, No 2 (2023): Juli 2023
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtllb.v11i2.66164

Abstract

Lindi merupakan limbah cair dari perkolasi air hujan dengan sel sampah yang mengalir pada aliran Tempat Pembuangan Akhir (TPA) berlokasi di Batu Layang, memiliki kandungan ion besi yang tinggi. Pada penelitian ini dilakukan penurunan ion besi pada lindi TPA Batu Layang, Kalimantan Barat, menggunakan zeolit alam teraktivasi dengan metode adsorpsi. Zeolit alam diaktivasi dengan HCl 1 M untuk menghilangkan zat - zat pengotor dan meningkatkan kinerja adsorpsi. Karakterisasi adsorben zeolit alam teraktivasi dipelajari dengan menggunakan instrumen Gas Sorption Analyzer (GSA). Penurunan konsentrasi ion besi diukur menggunakan instrumen Atomic Absorption Spectrophotometer (AAS). Kondisi optimum adsorben pada variasi waktu kontak 60, 90, 120, 150, dan 180 menit, dan massa adsorben 0,25; 0,5; 0,75; 1 dan 1,25 gram. Hasil penelitian menunjukkan karakteristik luas permukaan zeolit alam sebelum aktivasi sebesar 0,9808 m2/g dan setelah dilakukan aktivasi yaitu sebesar 2,6398 m2/g. Hasil total volume pori sebelum aktivasi sebesar 0,0054 cc/g dan setelah diaktivasi yaitu sebesar 0,0069 cc/g. Efektivitas penyerapan ion besi pada lindi dengan perbandingan 1 : 25 (g/mL) oleh adsorben zeolit alam teraktivasi pada waktu kontak optimum 60 menit dan massa adsorben 1,25 gram adalah sebesar 50,61%.
Elemental Composition of Sand Puya Processed through Alkali Fusion with Sodium Hydroxide Zaharah, Titin Anita; Lestari, Agustina Duwan; Sembiring, Albert; Silalahi, Imelda Hotmarisi
ALCHEMY:Journal of Chemistry Vol 12, No 1 (2024): ALCHEMY: JOURNAL OF CHEMISTRY
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/al.v12i1.23017

Abstract

Puya sand is a well-known name by people in West Borneo, for remainder sand from gold mining conducted by local people, contains a mixture of minerals consist of elements, such as zirconium, silicon, iron, titanium and rare earth metals.  In order to recover and separate the minerals, an initial chemical process, i.e., alkali fusion reaction with sodium hydroxide has been conducted.  Puya sand that have been pre-treated, called magnetic sand (pasir tertarik magnet, PTM) was reacted with NaOH in various mass of PTM:NaOH 1:0.5, 1:1 and 1:2 as well as various temperature of 550 °C, 600 °C , 700 °C and 800 °C for each concentration variants. The X-ray diffraction (XRD) analysis showed that the main mineral found in PTM is zirconium silicate, ZrSiO4 which is crystalline, however it became an amorph material after it was reacted with NaOH at 550 °C. In a mass ration of PTM:NaOH of 1:2 at 550 °C, the reaction product calcinated at 800 °C appeared to form hematite, zirconia and silica shown by the XRD analysis. The analysis of X-ray fluorescence (XRF) demonstrated a different elemental composition in a different reaction condition. Zirconium silicate likely was decomposed to zirconate and silicate assigned by a high Zr/Si ratio, seen more obvious at the temperature of 700 °C, in which the highest Zr/Si ratio was found at the mass ratio of PTM:NaOH, 1:2. The fusion reaction between PTM and NaOH at 600 °C and PTM:NaOH of 1:2 resulted in a material with the highest concentration of iron element relative to other elements. Reaction undertaken at 700 °C and mass ratio of PTM:NaOH of 1:0.5 gave a product with the highest concentration of titanium elements or oxide. Depends on the mineral target aimed to decompose, the condition of alkali fusion reaction is an important aspect to take into account.
Peningkatan Kadar Zirkonium Silikat dalam Pasir Puya, Residu Penambangan Emas dari Kecamatan Monterado Kabupaten Bengkayang Provinsi Kalimantan Barat Kartika, Novi; Silalahi, Imelda Hotmarisi; Zaharah, Titin Anita; Aritonang, Anthoni B
POSITRON Vol 14, No 1 (2024): Vol. 14 No. 1 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v14i1.66460

Abstract

Pasir zirkon memiliki kandungan zirkonium berkisar antara 30-50% berat di beberapa lokasi penambangan emas yang berada di Kalimantan Barat. Analisis XRF memperlihatkan persen berat unsur dalam pasir hitam non magnetik (PHNM) dari pasir zirkon yang berasal dari Kecamatan Monterado, Kabupaten Bengkayang adalah 48,05% Zr; 3,35% Si serta unsur lain seperti 20% Ti, 18,95% Fe dan 1,62% Hf. Peningkatan kadar zirkon dilakukan melalui beberapa tahapan yaitu metode fusi alkali dengan perbandingan massa PHNM terhadap massa NaOH yaitu 10 gram : 5 gram (2:1) pada variasi temperatur 700 °C dan 800 °C selama 2 jam, kemudian tahap pelindian menggunakan HCl 2% diikuti oleh pelindian lanjut dalam HCl 37%. Perbedaan temperatur dalam reaksi fusi alkali menghasilkan perbedaan komposisi Zr, dimana pada temperatur 700 °C adalah 88,45% sedangkan pada temperatur 800 °C adalah 90,11% dengan rasio Zr/Si masing-masing adalah 5,33 dan 4,85. Temperatur reaksi fusi alkali pada 800 °C memperlihatkan komponen Zr lebih tinggi dengan rasio Zr/Si yang mendekati ZrSiO4 yaitu 3,25. Analisis jenis mineral menggunakan XRD padat memperlihatkan keberadaan mineral ZrSiO4 dengan struktur kristal tetragonal, memiliki puncak utama pada 2θ adalah 20,04 °-20,10 °, 26,94 °-26,98 °, dan 53,48 °-53,49 °. Ukuran kristal ZrSiO4 berdasarkan perhitungan menggunakan persamaan Debye Scherrer berada dalam kisaran 120,78 nm (2θ = 20,10 °), 122,30 nm (2θ = 26,98 °), dan 133,17 nm (2θ = 53,48 °). Rendemen perlakuan PHNM dengan rangkaian proses reaksi fusi alkali, reaksi basa dan pelindian menggunakan HCl adalah berkisar 33% dengan kadar zirkon silikat dalam produk akhir meningkat dari 46,2% menjadi 90,11%.
Extraction and Characterization of Fe2O3 from Red Mud PT. Indonesia Chemical Alumina West Kalimantan Wahyinto, Indi Rizki; Aritonang, Anthoni B.; Zaharah, Titin Anita
BERKALA SAINSTEK Vol 10 No 3 (2022)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v10i3.30252

Abstract

Red Mud is a term used for residues or waste materials from bauxite refining. One of the main compositions of red mud is Fe2O3. This study aims to obtain the optimum extraction of Fe2O3 conditions or hematite by using APDC ligands and knowing the characteristics of Fe2O3 generated. In this study, Fe2O3 extraction begins to determine the optimum pH and ligand concentration. The results of determining the optimum conditions showed pH 1 and ligand concentration of 0.5 M. Fe2O3 characteristics can be resolve through the characterization of Fourier Transformed Infra Red (FTIR), X-ray Diffraction (XRD) and X-ray Fluorescence (XRF). The results of FTIR characterization showed the stretching vibration of Fe-O Fe2O3 phase (570.50 cm-1 and 470.20 cm-1), XRD diffractogram showed the resulting crystal shape is rhombohedralsize is 27,08 nm, while the XRF characterization results showed the mass percent Fe2O3 before extraction is 42.48% and the mass percent Fe2O3 after extraction is 72.443%.
PEMURNIAN HEMATIT DARI RED MUD PT INDONESIA CHEMICAL ALUMINA (ICA) DENGAN VARIASI SUHU KALSINASI Adhitiyawarman, Adhitiyawarman; Septiriyani, Melia; Zaharah, Titin Anita
Indonesian Journal of Pure and Applied Chemistry Vol 7, No 3 (2024)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v7i3.70617

Abstract

Red mud is an insoluble fraction of bauxite ore, and it is a waste from bauxite processing into alumina. Red mud contaminated with alkaline substances and therefore poses a danger to the environment and humans. One of the largest bauxite processing companies in West Kalimantan is PT Indonesia Chemical Alumina (ICA). PT ICA can produce red mud around 240.000-450.000 each year. Red mud contains some minerals that are useful for various industries. The largest mineral content in red mud is hematite. Hematite is an iron oxide mineral with the chemical formula Fe2O3. This study aims to determine the hematite content of the extraction results from Red mud PT ICA. This research also investigates how different calcination temperatures during synthesis impact material properties, with analysis using XRF and XRD. It is known that the extracted sample contains 49.74% Fe2O3. The results of XRF analysis show that at 900 °C, the hematite content produced is higher (90.20%) compared to 800 °C (87.84%). The results of XRD analysis show that the position of the typical 2θ peaks of hematite that appear in both temperature variations is not too different, namely: 33.04 °; 35.515; 54.01 ° at 800 °C and 33,06 °; 35,55 °; 54,04 ° at 900 °C. The calcination temperature variation is also known to affect the percentage of hematite crystallinity, which is 18.23% at 800 °C and 24.87% at 900 °C. The crystal structure of hematite is rhombohedral.
Co-Authors Adhitiyawarman, Adhitiyawarman Ajuk Sapar Amanda, Ferdian Rizki Andi Hairil Alimuddin Anis Shofiyani Anjarsari, Nita Aprilianti, Wirna Ari Widiyantoro Aritonang, Anthoni B. Aritonang, Anthoni Batahan Endah Sayekti Ernilia, Kristina Gusrizal Gusrizal Imelda Hotmarisi Silalahi Kartika, Novi Lestari, Agustina Duwan Nelly Wahyuni Putri, Rinka Carolina Rahmayani, Ika Rahmiyati, Yusnita Risa Nofiani Rudiyansyah Rudiyansyah Sembiring, Albert Septiriyani, Melia Thamrin Usman Ullica, Dheasi Rani Wahyinto, Indi Rizki Wibowo, M. Agus Yamin, Bohari Mohd.