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All Journal VALENSI EKSAKTA: Journal of Sciences and Data Analysis Reaktor JURNAL KIMIA SAINS DAN APLIKASI Prosiding Seminar Nasional MIPA Wahana Matematika dan Sains Alchemy : Journal of Chemistry JURNAL PIJAR Prosiding Pendidikan Sains Bulletin of Chemical Reaction Engineering & Catalysis Journal of Mathematical and Fundamental Sciences Elkawnie PROSIDING SEMINAR KIMIA Jurnal Litbang Industri INDONESIAN JOURNAL OF PHARMACY Al-Kimia Sains Natural: Journal of Biology and Chemistry Chemistry Indonesian Journal of Chemical Research ALKIMIA : Jurnal Ilmu Kimia dan Terapan Jurnal Ilmiah Teknik Kimia Jurnal Inovasi Teknik Kimia Molluca Journal of Chemistry Education (MJoCE) Jurnal Riset Teknologi Pencegahan Pencemaran Industri Jurnal Pijar MIPA Jurnal Farmasi Etam Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Jurnal Litbang Industri Jurnal Natural Molekul: Jurnal Ilmiah Kimia Bulletin of Chemical Reaction Engineering & Catalysis JURNAL REKAYASA KIMIA & LINGKUNGAN
Dwi Siswanta
Chemistry Department , Faculty Of Mathematics And Natural Science, Gajah Mada University, Sekip Utara, Yogyakarta, Indonesia
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Physics Social Sciences

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Pemodelan dan Analisis QSAR Turunan Aminosulfenil Metilkarbamat sebagai Insektisida menggunakan Metode Semiempirik Austin Model 1 Siswanta, Dwi; Nugraha, Gerry
ALKIMIA Vol 1 No 1 (2017): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (146.338 KB) | DOI: 10.19109/alkimia.v1i1.1330

Abstract

Telah diteliti pemodelan insektisida turunan aminosulfenil metilkarbamat berdasarkan model QSAR (Quantitative Structure Activity Relationship). Senyawa turunan aminosulfenil metilkarbamat dan data aktivitas inhibitor asetilkolinesterasenya diperoleh dari literatur. Perhitungan deskriptor elektronik, polaritas dan pemodelan struktur senyawa turunan aminosulfenil metilkarbamat dilakukan dengan metode semiempirik Austin Model 1 (AM1). Analisis QSAR dilakukan dengan analisis regresi multilinier untuk memperoleh persamaan QSAR terbaik untuk memprediksi aktivitas inhibitor asetilkolinesterase pada serangga dan mamalia, persamaan tersebut adalah: Serangga Log LD50 = 28,655 + 409,682 qC2 + 111,990 qO4 – 68,932 qC5 + 79,603 qC9 + 36,628 qO12 + 14,228 qO15 + 18,116 qC16 – 15,488 qS17 + 5,022 qN18 – 0,105 dipol – 0,044 Log P + 0,054 Polarisabilitas (n= 43, R= 0,928, SD= 0,176, Fhitung/Ftabel= 6,865, PRESS= 0,242) Mamalia Log LD50 = 6,984 + 28,671 qO15 - 6,986 qN18 - 0,091 dipol -0,180 Log P + 0,053 Polarisabilitas (n = 13, R = 0,977, SD = 0,042, Fhitung/Ftabel= 7,326, PRESS = 0,006) Berdasarkan model diatas, dirancang senyawa insektisida baru turunan aminosulfenil metilkarbamat dengan aktivitas inhibitor asetilkolinesterase yang tinggi terhadap serangga tapi rendah terhadap mamalia. Senyawa yang tersubstitusi ganda dengan kurkumin dan – (CH2)2COOC2H5 yaitu etil 3-((((((2,2- dimetil-2,3-dihidrobenzofuran-7-il)oksi)karbonil) (metil)amino)tio) ((4-((1E,6E)-7-(4–hidroksi-3-metoksifenil)- 3,5- dioksohepta- 1,6-dien-1il) -2-metoksifenoksi) metil)amino) propanoat memiliki aktivitas inhibitor asetilkolinesterase yang tinggi terhadap serangga (LD50=0,71 µg/g) dan aktivitas inhibitor asetilkolinesterase yang rendah terhadap mamalia (LD50=20.769,86 g/kg). Senyawa ini direkomendasikan untuk disintesis di laboratorium sebagai senyawa insektisida baru.
The Dependency of Kinetic Parameters as a Function of Initial Solute Concentration: New Insight from Adsorption of Dye and Heavy Metals onto Humic-Like Modified Adsorbents Rahmat Basuki; Bambang Rusdiarso; Sri Juari Santosa; Dwi Siswanta
Bulletin of Chemical Reaction Engineering & Catalysis 2021: BCREC Volume 16 Issue 4 Year 2021 (December 2021)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.16.4.11816.773-795

Abstract

Kinetics parameters are the essential issue in the design of water treatment systems for pollutants uptake. Though numerous studies have identified the boundary conditions that exert influence on the kinetics parameters, the influence of the dynamic initial solute concentration (C0) to the kinetic parameters generated from fitting kinetics model to experimental data has not been investigated thoroughly. This study revealed a change in the kinetics parameter value due to changes in the adsorption mechanism as an effect of dynamic C0. It was observed that at higher C0 the adsorbed solute at equilibrium (qe) increases and it takes longer time to reach equilibrium. As a result, the kinetics rate constant (k) calculated from adsorption reaction model (Lagergren, Ho, Santosa, and RBS) was decreased. In general, Ho model exhibit higher correlation coefficient value (R2) among the other model at low C0. At high C0, Ho’s R2 tend to decrease while the Lagergren and RBS’s R2 was increased. The amendment mechanism from external mass transport to intra-particle diffusion as a rate limiting step was evidenced by Boyd and Weber-Morris kinetics model. Further, the physicochemical properties of the adsorbent used in this work: chitin and Fe3O4 modified horse dung humic acid (HDHA-Fe3O4 and HDHA-Ch, respectively) with the solute: Pb(II), Methylene Blue (MB), and Ni(II) was deeply discussed in this paper. The outcomes of this work are of prime significance for effective and optimum design for pollutant uptake by adsorption equipment. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
ADSORPTION CHARACTERISTIC OF IRON ONTO POLY[EUGENOL-CO-(DIVINYL BENZENE)] FROM AQUEOUS SOLUTION Fitrilia Silvianti; Dwi Siswanta; Nurul Hidayat Aprilita; Agung Abadi Kiswandono
Jurnal Natural Volume 17, Number 2, September 2017
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v17i2.8076

Abstract

A study on the adsorption characteristic of Iron onto Poly[eugenol-co-(divinyl benzene)] (EDVB) from aqueous solution has been conducted. EDVB was produced and characterized by using FTIR spectroscopy. The adsorption was studied by a batch method by considering the factors affecting the adsorption such as initial metal ion concentration, adsorption selectivity, and mechanism of adsorption using a sequential desorption method. The adsorption of Iron onto EDVB followed a pseudo-2 order kinetics model with the rate constant of 0,144 L2 mmol-1 min-1. The adsorption isotherm was studied with Tempkin, Langmuir and Freundlich models. The adsorption capacity (Qmax) obtained by Langmuir isotherms was 250mg.L-1 while the equilibrium value was 0.8 Lmg-1. A competitive adsorption study showed that EDVB is adsorbed selectively towards Iron rather than Chromium, Coppers and Cadmium ions. The interaction type of Iron onto EDVB was determined by a sequential desorption.Keywords: Polyeugenol; divinyl benzene (DVB); adsorption; Iron; FeReferencesAbasi, C. Y.; Abia, A.A.; Igwe, J.C. Adsorption of Iron (III), Lead (II) and Cadmium (II) Ions by Unmodified Raphia Palm (Raphia hookeri) Fruit Endocarp. Environ. Res. 2011, 5 (3), 104-113, ISSN: 1994-5396, Medwell Journals. DOI: 10.3923/erj.2011.104.113Baes, F. C.; Mesmer, R. E. The Hydrolisis of Cations; John Wiley: New York, 1976Bakatula, E.N.; Cukrowska, E.M.; Weiersbye, L.; Mihali-Cozmuta, L.;Tutu, H. Removal of toxic elements from aqueous solution using bentonite modified with L-histidine. Water Sci. Technol.2014, 70 (12),2022-2030, DOI: 10.2166/wst.2014.450Bhattacharyya, K.G.; Gupta, S.S. Adsorption of Fe(III) from Water by Natural and Acid Activated Clays: Studies on equilibrium isotherm, kinetics and thermodynamics of interactions. Adsorption. 2006, 12 (3), 185-204,DOI : 10.1007/s10450-006-0145-0Carmona, M..; Lucas, A.D.; Valverde, J.L.; Velasco, B.; Rodriguez, J.F. Combined adsorption and ion exchange equilibrium of phenol on Amberlite IRA-420.Chem. Eng. J.2006, 117, 155-160, Doi : 10.1016/j.cej.2005.12.013Debnath, S.; Ghosh, U.C. Kinetics, isotherm and thermodynamics for Cr(III) and Cr(VI) adsorption from aqueous solutions by crystalline hydrous titanium oxide. J. Chem. Thermodin. 2008, 40: 67-77, DOI: 10.1016/j.jct.2007.05.014Djunaidi, M.C.; Jumina; Siswanta, D.; Ulbricht, M. Selective Transport of Fe(III) Using Polyeugenol as Functional Polymer with Ionic Imprinted Polymer Membrane Method. Asian J. Chem. 2015, 27 (12): 4553-4562, DOI : 10.14233/ajchem.2015.19228Febriasari, A.; Siswanta, D.; Kiswandono, A.A.; Aprilita, N.H. Evaluation of Phenol Transport Using Polymer Inclusion Membrane (PIM) with Polyeugenol as a Carrier. Jurnal Rekayasa Kimia dan Lingkungan. 2016, Vol. 11, No. 2, 99-106, DOI: 10.23955/rkl.v11i2.5112Foldesova, M.; Dillinger, P.; Luckac, P. Sorption and Desorption of Fe(III) on Natural and chemically modified zeolite. J. Radioanal. Nucl. Chem. 1999, Vol. 242, No. 1 (1999), 227-230, DOI: 10.1007/BF02345926Gupta, V.K.;Sharma, S. Removal of cadmium and zinc from aqueous solutions using mud.Environ. Sci. Technol. 2002, 36: 3612-3617, DOI: 10.1021/es020010vHandayani, D.S. Sintesis kopoli(eugenol-DVB) sulfonat dari Eugenol Komponen Utama Minyak Cengkeh Szygium aromaticum (Synthesis of copoly(eugenol-DVB) sulfonic from main components of eugenol clove oil Szygium aromaticum). Biopharmacy Journal of Pharmacological and Biological Sciences. 2004, 2 (2): 53-57 ISSN: 1693-2242. url : https://eprints.uns.ac.id/id/eprint/856Harimu, L.; Matsjeh, S.; Siswanta, D.; Santosa, S.J. Synthesis of Polyeugenyl Oxyacetic Acid as Carrier to Separate Heavy Metal Ion Fe(III), Cr(III), Cu(II), Ni(II), Co(II), and Pb(II) that Using Solvent Extraction Mehod. Indo. J. Chem. 2009, 9 (2): 261-266.Ho, Y.S.; McKay, G. Pseudo-second Order Model for Sorption Processes. Process. Biochem. 1999, 34, 451-465, DOI: 10.1016/S0032-9592(98)00112-5Ho, Y.S.; McKay, G.; Wase, D.A.J.;Forster, C.F. Study of Sorption Divalent Metal Ions on to Peat. Adsorpt. Sci. Technol. 2000, 18: 639-650. DOI : 10.1260/0263617001493693Indah, S.; Helard, D.;Sasmita, A. Utilization of maize husk (Zea mays L.) as low-cost adsorbent in removal of iron from aqueous solution. Water Sci. Technol. 2016, 73 (12), 2929-2935, DOI: 10.2166/wst.2016.154Kiswandono, A.A.; Siswanta, D.; Aprilita, N.H.; Santosa, S.J. Transport of Phenol through inclusion polymer membrane (PIM) using copoly(Eugenol-DVB) as membrane carries. Indo .J. Chem. 2012, 12 (2): 105-112. Doi : 10.22146/ijc.667Kousalya, N.; Gandhi, M.R.; Sundaram, C.S.; Meenakshi, S. Synthesis of nano-hydroxyapatite chitin/chitosan hybrid bio-composites for the removal of Fe(III).Carbohyd. Polym. 2010, 82: 594-599, DOI:10.1016/j.carbpol.2010.05.013Kumar, K.V.; Porkodi, K.;Rocha, F. Langmuir-Hinshelwood kinetics – A theoretical study, Catalysis Communications. 2008, 9: 82-84, DOI:10.1016/j.catcom.2007.05.019Masel, R.I. Principles Adsorption and Reaction on Solid Surface; John Wiley Sons: Canada, 1996Moore, J. W.; Pearson, R.G. Kinetics and Mechanism Third Edition; John Wiley Sons: Canada, 1981.Ngah, W.S.W.; Ghani, S.A.; Kamari, A. Adsorption Behaviour of Fe(II) and Fe(III) Ions in Aqueous Solution on Chitosan and Cross-linked Chitosan Beads. Bioresource. Technol. 2005, 96: 443-450. DOI:10.1016/j.biortech.2004.05.022Rahim, E.A.; Sanda, F.; Masuda, T. Synthesis and Properties of Novel Eugenol-Based Polymers. Polymer Bulletin. 2004, Vol. 5, 93-100, DOI: 10.1007/s00289-004-0272-2Samarghandi, M.R.; Hadi. M.; Moayedi, M.; Askari, F.B. 2009. Two Parameter Isotherms of Methyl Orange Sorption by Pinecone Derived Activated Carbon. Iran. J. Environ. Health Sci. Eng., 6 (4): 285-294.Setyowati, L. 1998. Pengaruh Penambahan Divinil Benzena (DVB) pada Kopolimerisasi Kationik Poli[eugenol-co-(divinil benzena)] dan Sifat Pertukaran Kation Kopoligaramnya (The Effect of divinylbenzene (DVB) Addition to Eugenol-DVB Cationic Copolymerization and Its Use As Cation-Exchanger), Thesis, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta, Indonesia.Shi, T.; Jia, S.; Chen, Y.; Wen, Y.; Du, C.; Guo, H.; Wang, Z. Adsorption of Pb(II), Cr(III), Cu(II), Cd(II) and Ni(II) onto a vanadium mine tailing from aqueous solution. J. Hazard. Mater. 2009, 169: 838-846, DOI: 10.1016/j.jhazmat.2009.04.020Sun, S.;Wang, A. Adsorption Kinetics of Cu(II) Ions Using N,O-Carboxymethyl-Chitosan. J. Hazard. Mater. 2006, B131: 103-111, DOI: 10.1016/j.jhazmat.2005.09.012Sun, S.; Wang, L.;Wang, A. Adsorption Properties of Crosslinked Carboxymethyl-chitosan Resin With Pb(II) as Template Ions. J. Hazard. Mater. 2006, B136: 930-937, DOI: 10.1016/j.jhazmat.2006.01.033Uzun, I.; Guzel, F. Adsorption of Some Heavy Metal Ions from Aqueous Solution by Activated Carbon and Comparison of Percent Adsorption Result of Activated Carbon with those of Some Other Adsorbents. Turk. J. Chem. 2000, 24: 291-297.Zou, X.; Pan, J.; Ou, H.; Wang, X.;Guan, W.; Li, C.; Yan, Y.; Duan, Y. Adsorptive removal of Cr(III) and Fe(III) from aqueous solution by chitosan/attapulgite composites: Equilibrium, thermodynamics and kinetics. Chem. Eng. J. 2011, 167: 112-121, DOI: 10.1016/j.cej.2010.12.009 
Adsorption of Methylene Blue using the Biosorbent of Coconut Fiber Activated by Nitric Acid Baunsele, Anselmus Boy; Kopon, Aloisius Masan; Boelan, Erly Grizca; Leba, Maria A. U.; Komisia, Faderina; Tukan, Maria B.; Taek, Maximus M.; Tukan, Gerardus D.; Missa, Hildegardis; Siswanta, Dwi; Naat, Johnson N.; Rahayu, Rahayu
Molekul Vol 19 No 1 (2024)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2024.19.1.9443

Abstract

The textile industry in the world keeps increasing, but it harms environmental pollution caused by textile dye waste. Synthetic dyes contain carcinogenic and mutagenic ingredients that can demage the environment and aquatic biota. The alternative to handling dye pollution with a low-cost method is adsorption using nitric acid-activated coconut fiber. Coconut fiber was an abundant agricultural waste and economical, and it had an active site that contained many compounds such as cellulose, lignin, pyroligneous acid, and tannin molecules. This study used the UV-Vis Spectrophotometer analysis method to determine the effect of pH, contact time, and coconut fiber on the adsorption capacity of methylene blue. The result showed that the optimal conditions for adsorption were a pH of 5, a contact time of 75 minutes, and a percentage adsorption of the variation of contact time of 99.628%. The adsorption study was according to a pseudo-second-order reaction with a constant reaction rate of 0.050 g mg-1 minute-1. The maximum adsorption capacity was 2 mg g-1, with the percentage of methylene blue adsorbed at 99.84%. Adsorption occurs chemically with an energy of 35.4 kJ mol-1, so it can be determined that it occurs with a monolayer mechanism.
Imobilisasi Asam Humat Pada Kitin Dan Aplikasinya Sebagai Adsorben Cr(III) Sehol, Muhamad; Juari Santosa, Sri; Siswanta, Dwi
Indonesian Journal of Chemical Research Vol 5 No 2 (2018): Edisi Bulan Januri (Edition For January)
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2018.5-seh

Abstract

Immobilization of humic acid on chitin has been conducted and applied to the adsorption of Cr(III). The humic acid was isolated using NaOH 0.1 M, while chitin was isolated by deproteination of crab shells by using NaOH 3.5 % (w/v) and followed by demineralization using HCl 1 M. Chitin obtained from ambient-temperature-dried crab shell is named as chitin I, and crab shell washed by HOCl solution and followed by drying at ambient temperature is named chitin II. The total acidity of the humic acid was 230.95 cmol/kg, and it was distributed into the acidity of COOH 168.75 cmol/kg, and phenolic-OH 62.20 cmol/kg. Adsorbent A with chitin I as the main material and adsorbent B with chitin II as the main material, resulted the adsorbed humic acid of 9.25 and 1.68% (w/w), respectively. Adsorption of Cr(III) was maximum at pH 5, with rate of constants orde of chitin II>adsorbent B>adsorbent A>chitin I, i.e. 0.3509; ; 0.2488; 0.1553; 0.0568 minute-1, respectively. The capacity of adsorption was in the orde of chitin I>adsorbent B>chitin II>adsorbent A, i.e. 944.77; 912.53; 895.37; 893.81 mg/g, respectively. The energy of adsorption of Cr(III) of chitin II>chitin I>adsorbent A>adsorbent B, i.e. 22.932; 20,945; 20.312; 19.615 kJ/mol, respectively.
Kinetic Study of Blue Methylene Adsorption Using Coconut Husk Base Activated Baunsele, Anselmus Boy; Boelan, Erly Grizca; Kopon, Aloisius Masan; Rahayu, Rahayu; Siswanta, Dwi
Indonesian Journal of Chemical Research Vol 10 No 2 (2022): Edition for September 2022
Publisher : Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598//ijcr.2022.10-ans

Abstract

Blue methylene is a cationic dye. It is usually as in various industries. The waste of blue methylene can reduce the environmental balance, especially for aquatic biota, by inhibiting the penetration of sunlight into the water. The experiment used the most natural ingredients and methods to minimize the existence of the dye. In this research, coconut husk was activated with NaOH solution and then used for blue methylene adsorption. The coconut husk started aims to reduce the pollution of the adsorbent to increase the adsorption capacity. The study result showed the optimum adsorption of blue methylene at pH 7 for 75 minutes of adsorption with the capacity adsorption of 1.41 mg g-1. The development of the kinetic study described the adsorption process according to a second-order pseudo reaction kinetic model with the constant adsorption rate of 2.54 x 10-4 g mg-1 minute-1.
Evaluation of Phenol Transport Using Polymer Inclusion Membrane (PIM) with Polyeugenol as a Carrier Arifina Febriasari; Dwi Siswanta; Agung Abadi Kiswandono; Nurul Hidayat Aprilita
Jurnal Rekayasa Kimia & Lingkungan Vol 11, No 2 (2016): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v11i2.5112

Abstract

A recovery study of phenol with Polymer Inclusion Membranes (PIMs) needs to be evaluated to determine values of transport kinetic parameter, level of stability, and selectivity of the membrane. This paper describes results of the evaluation of phenol transport using PIMs with polyeugenol as a carrier. PIMs were made by mixing polyeugenol, dibenzylether, and polyvinylchloride in a solvent (tetrahydrofuran) then printed in a container with diameter 4.5 cm and allowed to vaporize for 72 hours. Further evaluation studies are conducted at pH 4.5 with various parameters, among of them are various times that were taken to identify parameters of the transport kinetics of phenol, membrane stability, characterization, and testing of membrane selectivity by comparing transport of phenol with another compound, in this study chromium is used. This study results in calculation of values of transport kinetics of membrane permeability obtained at 8.8 x 10-5 m/s, flux value of 9.512 x 10-4 g/m2s, and diffusion coefficient of 3.826 x 10-11 m2/s. Repeating use over three times, 48 hours, indicates reduction in power of phenol transport by 70.81%. While selectivity test indicates that membrane is used more selectively against phenol than chromium metal. Based on study results, phenol transport effectiveness using PIM with polyeugenol as carrier is 91.4% in optimum condition.
Low-Cost Adsorbent Development: Sulfuric Acid-Activated Teak Sawdust for Effective Methylene Blue Removal Baunsele, Anselmus Boy; Missa, Hildegardis; Siswanta, Dwi; Naat, Johnson N.; Neolaka, Yantus A. B.; Nitti, Fidelis; Lema, Abner Tonu; Basuki, Rahmat; Rahayu, Rahayu
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 2, November 2024
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i2.41425

Abstract

The expansion of the global textile industry has resulted in a decline in environmental quality. Environmental pollution resulting from textile dye waste may include heavy metals and dyes, which exhibit carcinogenic and mutagenic effects. Many studies have been done to reduce the harm of dyes. Extensive research has been undertaken to mitigate the detrimental effects of dyes. One cost-effective approach for managing dye pollution is the adsorption of methylene blue using sulfuric acid-activated teak sawdust. Teak wood sawdust, a byproduct of the furniture industry that is abundant and underutilized, contains active sites within its constituent compounds, including cellulose, hemicellulose, and lignin. This study was designed to determine the ability of teak sawdust to adsorb methylene blue. In this investigation, the biosorbent will be characterized using fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and scanning electron microscopy-energy dispersive X-ray (SEM-EDX) to analyze its active sites and surface morphology. Additionally, the study aimed to elucidate the impact of variation contact time, pH solution, and alteration in methylene blue concentration on the adsorption capacity for methylene blue, employing a UV-Vis spectrophotometer for measurement. The research results demonstrated that optimal adsorption occurred at a contact time of 30 minutes and a pH of 6, with the adsorption efficiency reaching 99.67% as a function of contact time. The kinetic study was modeled using a pseudo-second-order approach, with a kinetic constant of 79.71 g mg⁻¹ min⁻¹. The maximum adsorption capacity was 1.351 mg g⁻¹, the n value was 1, and the percentage of methylene blue adsorbed reached 99.88%.
KINETIKA ADSORPSI METILEN BIRU MEMANFAATKAN SERBUK GERGAJI KAYU JATI TERAKTIVASI ASAM SULFAT Anselmus Boy Baunsele; Erly Grizca Boelan; Aloisius Masan Kopon; Maria Aloisia Uron Leba; Hildegardis Missa; Rahayu Rahayu; Merpiseldin Nitsae; Dwi Siswanta
Jurnal Inovasi Teknik Kimia Vol 9, No 4 (2024)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v9i4.12024

Abstract

Peningkatan kapasitas industri memberikan dampak positif bagi masyarakat namun meninggalkan jejak kerusakan bagi lingkungan. Tujuan penelitian ini untuk membantu menangani limbah metilen biru yang sering menjadi bahan buangan dari aktivitas industri. Metilen biru menjadi salah satu masalah karena mencemari lingkungan. Berbagai penyakit misalnya kanker maupun perubahan genetik bisa terjadi karena bioakumulasi bahan ini. Penanganan masalah pencemaran lingkungan akibat metilen biru telah banyak dilakukan misalnya adsorpsi, karena metode ini cukup sederhana dan mudah diterapkan. Berbagai bahan alam digunakan sebagai adsorben, contohnya serbuk gergaji kayu jati yang dijadikan sebagai adsorben. Serbuk gergaji kayu jati pada penelitian ini diaktivasi menggunakan larutan asam sulfat. Selanjutnya dilakukan karakterisasi menggunakan FTIR, SEM-EDX dan pHpzc. Setelah dikarakterisasi lalu dilakukan analisis adsorpsi metilen biru secara batch. Variabel penelitian yaitu variasi pH dan waktu kontak. Hasil penelitian menunjukkan bahwa adsorpsi maksimal pada pH 6 dengan kapasitas adsorpsi 1,96 mg g-1 (99,3%) dan waktu kontak maksimum yaitu 30 menit dengan nilai Qe adalah 1,97 mg g-1 (99,7%)
KINETIKA ADSORPSI METILEN BIRU MEMANFAATKAN SERBUK GERGAJI KAYU JATI TERAKTIVASI ASAM SULFAT Anselmus Boy Baunsele; Erly G. Boelan; Aloisius M. Kopon; Maria A. U. Leba; Hildegardis Missa; Rahayu; Merpiseldin Nitsae; Dwi Siswanta
Jurnal Inovasi Teknik Kimia Vol. 9 No. 4 (2024)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v9i4.12522

Abstract

Peningkatan kapasitas industri memberikan dampak positif bagi masyarakat namun meninggalkan jejak kerusakan bagi lingkungan. Tujuan penelitian ini untuk membantu menangani limbah metilen biru yang sering menjadi bahan buangan dari aktivitas industri. Metilen biru menjadi salah satu masalah karena mencemari lingkungan. Berbagai penyakit misalnya kanker maupun perubahan genetik bisa terjadi karena bioakumulasi bahan ini. Penanganan masalah pencemaran lingkungan akibat metilen biru telah banyak dilakukan misalnya menggunakan metode adsorpsi, karena metode ini cukup sederhana dan mudah diterapkan. Berbagai bahan alam digunakan sebagai adsorben, salah satu contoh limbah yang bisa dijadikan sebagai adsorben yaitu serbuk gergaji kayu jati. Serbuk gergaji kayu jati pada penelitian ini diaktivasi menggunakan larutan asam sulfat. Selanjutnya dilakukan karakterisasi menggunakan FTIR, SEM-EDX dan pHpzc. Setelah dikarakterisasi lalu dilakukan analisis adsorpsi metilen biru secara batch. Variabel penelitian yaitu variasi pH dan waktu kontak. Hasil penelitian menunjukkan bahwa adsorpsi maksimal pada pH 6 dengan kapasitas adsorpsi 1,96 mg g-1 (99,3%) dan waktu kontak maksimum yaitu 30 menit dengan nilai Qe adalah 1,97-1mg g (99,7%).
Co-Authors ., Jumina Abdul Karim Zulkarnain Abner Tonu Lema Adhitasari Suratman Adhitasari Suratman Adhitasari Suratman Adhitasari Suratman Agnes Dyah Novitasari Lestari Agung Abadi Kiswandono Ahmad Nasir Pulungan Akhmad Damsyik Aloisius M. Kopon Aloisius Masan Kopon Anjar Purba Asmara Anselmus Boy Baunsele Arifina Febriasari Bambang Kuswandi Bambang Kuswandi Bambang Rusdiarso Bambang Rusdiarso Desi Suci Handayani Dhony Hermanto Eko Sugiharto Eko Sugiharto Eni Kartika Sari Erly Grizca Boelan Faderina Komisia Febi Indah Fajarwati Fidelis Nitti Fitriana, Dina Fitrilia Silvianti Girsang, Ermi Herdiansyah Herdiansyah Herdiansyah Herdiansyah Hidetaka Kawakita Hildegardis Missa Jumina Jumina Jumina Jumina Jumina Jumina Juniva Laila Sihombing, Juniva Laila Karelius Karelius Keisuke Ohto Kopon, Aloisius Masan Leba, Maria A. U. M. Cholid Djunaidi Maria A. U. Leba Maria Aloisia Uron Leba Maria Benedikta Tukan Merpiseldin Nitsae Mudasir Mudasir Mudasir Mudasir Mudasir Mudasir Mudasir Mudasir Mustofa Mustofa Naat, Johnson N. Neolaka, Yantus A B Ni Putu Sri Ayuni Nindita Clourisa Amaris Susanto Nugraha, Gerry Nurillahi Febria Leswana Nurul Hidayat Aprilita Nurul Ismillayli Pratama J. Wibawa Rahayu Rahayu Rahayu Rahayu Rahayu Rahmat Basuki Rahmat Basuki Retno Ariadi Lusiana Rika Wulandari Rika Wulandari Romelos Untailawan Sehol, Muhamad Soerja Koesnarpadi Sri Juari Santosa Sri Juari Santosa Sri Juari Santosa Suyanta Suyanta Taek, Maximus M. Takashi Hayashita Triana Kusumaningsih Tukan, Gerardus D. Uripto Trisno Santoso Widya Krestina, Luqman Hakim, Dyah Ayu Pramoda Wardani,