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Synthesis of Patchouli Biochar Cr2O3 Composite Using Double Acid Oxidators for Paracetamol Adsorption Tutik Setianingsih; Masruri Masruri; Bambang Ismuyanto
The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1273.296 KB) | DOI: 10.21776/ub.jpacr.2018.007.01.367

Abstract

Composite built by patchouli biochar and metal oxide, Cr2O3, is a potential material for remediation of contaminated wasterwater. Oxidation of biochar using acid or salt oxidators can improve its surface polar functional groups. This treatment may be able to increase impregnation of  metal cation (as salt) before calcination to form its oxide. In this research, 3 types of oxidators were used to oxidize the biochar before impregnation with purpose to study its influence toward physichochemistry and adsorption performance of the composite. Preparation of the composite included 3 steps, including preparation of biochar by pyrolisis of patchouli biomass using ZnCl2 activator at 450 oC, oxidation of the biochar using 3 different oxidators (H2SO4-HNO3, H3PO4-HNO3, H2O2–HNO3) at 60 oC,  impregnation of the oxidized biochar using CrCl3 followed by calcination process to form biochar–Cr2O3 composite at 600 oC. Characterization using X-ray diffraction indicated that the composite containes the Cr2O3 structure.  FTIR spectrophotometry characterization indicates the different content of C=O, C-O, and –OH on the composite surface. SEM images shows irregular micro ball shapes. EDX characterization indicates the different Cr content in the composite with same sequence with FTIR absorbances of  both C-O and –OH. Adsorption of paracetamol  indicates effect of Cr2O3 showing the same sequence of both. 
Modification of Activated Carbon from Coconut Shell Charcoal with Copper (CuCl2/AC, Cu(OH)2/AC, CuO/AC) for Adsorption of Paracetamol Contaminant Bambang Arianto; Tutik Setianingsih; Barlah Rumhayati
The Journal of Pure and Applied Chemistry Research Vol 8, No 2 (2019): Edition May-August 2019
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2019.008.02.463

Abstract

This study provides information about the physicochemical properties and performance of activated carbon combined with copper to remove paracetamol from waste models. The activated carbon (AC) comes from coconut shell charcoal. CuCl2 was used as the copper source which then combined with activated carbon (AC). The AC was obtained by activating the coconut shell charcoal using KOH and 500°C calcination for 10 minutes. Carbon functionalization were done using H2SO4 6M as an oxidizer and temperature of 80°C for 3 hours. The impregnation of activated carbon with CuCl2 produces CuCl2/AC, then the CuCl2/AC was reacted with NaOH 5M to form precipitation of Cu(OH)2/AC. CuO/AC composite was finally produced by calcining the Cu(OH)2/AC to 950°C for 5 minute. The composite was characterized by FTIR, SEM-EDX, XRF and X-ray diffraction. The adsorption of paracetamol with CuO/AC composite gave the best results of 95.56% efficiency.
Synthesis of Organo-Quartz from Lumajang Sea Sand Using Sodium Dodecyl Benzene Sulfonate (SDBS) Modificator for Adsorption of Fe3+ Dhimas Yudistira; Danar Purwonugroho; Tutik Setianingsih
The Journal of Pure and Applied Chemistry Research Vol 10, No 1 (2021): Edition January-April 2021
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2021.010.01.530

Abstract

This study aims to determine the effect of sea sand modification with SDBS for adsorption of Fe3+. Sea sand was treated with 0.1 M HCl solution at 25oC. Organo-quartz was prepared at SDBS concentration of below, equal, and above the CMC value by shaking the mixture for 4 hours at 100 rpm. Characterization by FTIR spectrophotometry showed a change in the spectra pattern. The activation caused increasing of -OH silanol while modifications make them decrease. Characterization with SEM showed that the morphology of the sea sand was not uniform with irregular white chunks. The EDX results showed that the dominant elements were C (13.89% ± 10.86), O (40.48% ± 6.58), Si (16.51% ± 8.13), and Fe (11.68% ± 14.38). Adsorption was carried out using Fe3+ at 50 ppm. The Fe3+ analysis was conducted by AAS. The adsorption value by activated sea sand was 58.22% ± 7.23% whereas without treatment sea sand was 70.46% ± 5.54, and the modified sea sand was 53.24% ± 4.86. The lower adsorption is probably caused by the dissolved iron oxides in sea sand during activation.
Effect of Carbonization Time of Mesoporous Carbon in the Dyes Adsorption: Rhodamine B, Methylene Blue and Carmine Misriyani Misriyani; Tutik Setianingsih; Darjito Darjito
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 5, No 1 (2020): February 2020
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v5.i1.1

Abstract

Study of dyes adsorption (rhodamine B, methylene blue and carmine) by using mesoporous carbon synthesized at various carbonization time has been done. Purpose of this research was to understand influence of carbonization time to performance of the mesoporous carbon in dyes adsorption. In addition, adsorption performance of the mesoporous carbon and commercial carbon were compared. The adsorption test were conducted at conditions: 0.1 g of adsorbent, 25 mL of dyes solutions 100 ppm and shaking rate 125 rpm for 4 hour. Filtrate was used to determine remain concentration of the dyes with UV-visible spectrophotometry. Result of the research showed that the carbonization time from 1 to 3 hours  improved the adsorption, whereas from 3 to 5 hours decreased it. The best character of the mesoporous carbon was obtained at carbonization time of 3 hours with adsorption values of 96.43 ± 0.37 % for rhodamine-B, 38.80 ± 1.44 % for methylene blue and 48.51 ± 1.55 % for carmine. The adsorption values of the mesoporous carbon were 0.97 times for rhodamine B, 0.48 times for carmine, and 0.39 times for methylene blue compared with the commercial activated carbon.
Pelatihan Pewarnaan Tahu Malang Dengan Pewarna Alam Menggunakan Metode Door-to-Door dan Whatsapp Tutik Setianingsih; Danar Purwonugroho; Sri Wardhani; Siti Mutrofin; Yoandra Nadya Yoniansyah; Afif Eka Rahma Setiyanto
CARADDE: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 1 (2021): Agustus
Publisher : Ilin Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31960/caradde.v4i1.870

Abstract

Pelatihan pewarnaan tahu Malang dengan pewarna alam kemangi dan rossela telah dilakukan. Kegiatan ini merupakan program Pengabdian Kepada masyarakat DPP SPP 2020. Kegiatan ini penting dilakukan karena kuliner tahu cukup populer di kota Malang, serta untuk peningkatan nilai gizi tahu dan penambahan zat aktif antioksidan dari pewarna alam agar lebih menyehatkan. Mengingat masa pandemi COVID 19, maka metode pelatihan yang dipilih adalah dor to door (penyelenggara mendatangi peserta) dan sharing video di grup WA. Penyiapan tahu warna dilakukan dengan menggunakan prinsip adsorpsi zat warna ekstrak kemangi dan bunga rosella oleh tahu yang dididihkan secara bersama. Pelatihan door to door dilakukan oleh mahasiswa dan dosen ketua pelaksana, sharing video penyuluhan yang dilakukan oleh semua dosen yang terlibat dalam kegiatan, dan video praktek pewarnaan tahu oleh mahasiswa. Hasil evaluasi menunjukkan bahwa kemangi mendapat penilaian lebih baik (67% menyatakan lebih enak dan 75% lebih menarik) oleh peserta dibanding rosella (62% menyatakan rasa tahu lebih masam). Sebanyak 71% peserta menyatakan metode door to door sangat baik, 94% menyatakan topik pewarnaan tahu menarik, serta 35% peserta memiliki rencana untuk melakukan pewarnaan tahu.
The Effect of Caramelization and Carbonization Temperatures toward Structural Properties of Mesoporous Carbon from Fructose with Zinc Borosilicate Activator Tutik Setianingsih; Indriana Kartini; Yateman Arryanto
Indonesian Journal of Chemistry Vol 14, No 3 (2014)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (595.66 KB) | DOI: 10.22146/ijc.21236

Abstract

Mesoporous carbon was prepared from fructose using zinc borosilicate (ZBS) activator. The synthesis involves caramelization and carbonization processes. The effect of both process temperature toward porosity and functional group of carbon surface are investigated in this research. The caramelization was conducted hydrothermally at 85 and 100 °C, followed by thermally 130 °C. The carbonization was conducted at various temperatures (450–750 °C). The carbon-ZBS composite were washed by using HF 48% solution, 1M HCl solution, and aquadest respectively to remove ZBS from the carbon. The carbon products were characterized with nitrogen gas adsorption-desorption method, FTIR spectrophotometry, X-ray diffraction, and Transmission Electron Microscopy. The highest mesopore characteristics is achieved at 100 °C (caramelization) and 450 °C (carbonization), including Vmeso about 2.21 cm3/g (pore cage) and 2.32 cm3/g (pore window) with pore uniformity centered at 300 Å (pore cage) and 200 Å (pore window), containing the surface functional groups of C=O and OH, degree of graphitization about 57% and aromaticity fraction about 0.68.
CHARACTERIZATION OF IMMOBILIZED LIPASE IN ALUMINOSILICATE FOR LACTOSYL PALMITATE SYNTHESIS Anna Roosdiana; Tutik Setianingsih; Diah Mardiana; Suratmo Suratmo
Indonesian Journal of Chemistry Vol 9, No 2 (2009)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (198.94 KB) | DOI: 10.22146/ijc.21530

Abstract

Whey lactose can be esterified enzymatically by using immobilized lipase. The lipase can be isolated from Rhizopus oryzae, purified and immobilized in mesoporous aluminosilica. The use of immobilized lipase has advantages, there are longer shelf life and repeatable use. It is necessary to characterize the immobilized lipase dan ester product. The aim of the research was to characterize immobilized lipase, including determination lipase adsorption type in mesoporous aluminosilicate, immobilized lipase stability during storage time, efficiency of repetitive use of immobilized lipase. The result showed that lipase adsorption in mesoporous aluminosilicate was physical adsorption type through hydrogen bound and electrostatic interaction. Immobilized lipase stability was relatively constant at storage temperature 5 °C for 25 days resulting in 98.16% of initial activity. The repetitive use of immobilized lipase showed efficient until 5 uses within activity of 50.22%. The IR spectra of lactosyl palmitate from both whey and pure lactose result showed bands at wavelength number of 3462 cm-1(OH bond), 1739 cm-1 and 1747 (C=O ester bond) 1295 cm-1 dan 1242 cm-1 (C-O ester bond). In addition, the HLB value for lactosyl palmitate (whey) 4.708 and lactosyl palmitate (pure lactose) 4.715, therefore both lactosyl palmitate is appropriate as emulgator in W/O.
STUDY OF NaOH - ACTIVATION TEMPERATURE INFLUENCE TOWARD CHARACTER OF MESOPOROUS CARBON BASED ON TEXTILE SLUDGE WASTE Tutik Setianingsih; Uswatun Hasanah; Darjito Darjito
Indonesian Journal of Chemistry Vol 8, No 3 (2008)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (905.384 KB) | DOI: 10.22146/ijc.21590

Abstract

Textile sludge waste contains many organic matters so that it is potential to be used as mesoporous carbon precursor. Actived carbon with mesopore character is effective as adsorbent and catalyst carrier of large molecules. Synthesis of the activated mesoporous carbon was done with purpose to study influence of activation temperature toward characters of the carbon. Process of the synthesis involved dry sludge (50 g) as precursor, concentrated sodium silicate solution SiO2 24.5% and Na2O 7.5% (50 mL) as template source, 1 M HCl solution (50 mL) as polimering agent, carbonization condition at 600 °C 3 h under nitrogen gas flow, activation conditions with NaOH 50% and various temperatures (400, 500, 600, 700, and 800 °C), and demineralizatin conditions with 0.1 M HCl solution for 4 h and 125 rpm. All of the products were characterized with methylen blue method to determine specific pore volume and specific surface area. The carbon obtained at optimum temperature was characterized again with surface area analyzer. Result of the research showed that the optimum condition was achieved at activation temperature of 500 °C. Characters of the synthesized carbon at the optimum condition were specific surface area of 638.32 m2/g, specific pore volume of 0.35 cm3/g, average pore diameter of 21.78 Å, and methylene blue number of 358.87 mg/g.