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All Journal VALENSI CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Jurnal Kimia (Journal of Chemistry) CHEMISTRY PROGRESS International Journal of Science and Engineering (IJSE) Jurnal Penelitian Sains (JPS) Jurnal Kedokteran Brawijaya Jurnal Matematika & Sains Bulletin of Chemical Reaction Engineering & Catalysis The Journal of Pure and Applied Chemistry Research AGRIVITA, Journal of Agricultural Science Jurnal Penelitian Sains (JPS) IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) JPSriwijaya Indonesian Journal of Chemical Science Science and Technology Indonesia Jurnal Penelitian Sains Indonesian Journal of Chemistry Communications in Science and Technology IJEMS (Indonesian Journal of Environmental Management and Sustainability) Riau Journal of Empowerment Molekul: Jurnal Ilmiah Kimia Sains dan Matematika SRIWIJAYA JOURNAL OF ENVIRONMENT Makara Journal of Science Makara Journal of Technology Aceh International Journal of Science and Technology Karunia: Jurnal Hasil Pengabdian Masyarakat Indonesia Bulletin of Chemical Reaction Engineering & Catalysis Indonesian Journal of Material Research Bumi: Jurnal Hasil Kegiatan Sosialisasi Pengabdian Kepada Masyarakat

Aldes Lesbani

Universitas Sriwijaya

Author-ID : 305968

Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Physics Public Health Social Sciences

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A Comparative Study on The Adsorption Behavior of Congo Red on to ZnAl and ZnCr Layered Double Hydroxides Tarmizi Taher; Nyanyu Ummu Hani; Neza Rahayu Palapa; Risfidian Mohadi; Aldes Lesbani
The Journal of Pure and Applied Chemistry Research Vol 9, No 2 (2020): Edition May-August 2020
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2020.009.02.519

In this work, two synthetic layered double hydroxides (LDH) consists of Zn2+ as M2+ cation with different M3+ cation, i.e., Al3+ and Cr3+ were used as an adsorbent for Congo Red removal aqueous solution. Both Zn-Al and Zn-Cr LDH were characterized by X-ray diffraction, FT-IR, and BET surface area analyzer. The effect of contact time, initial dye concentration, and temperature were evaluated in a batch technique in order to investigate the characteristic of Congo Red adsorption onto both adsorbents. The experimental data were assessed according to the parameter of adsorption kinetics, isotherm, and thermodynamics. The results of LDH characterization showed that Zn-Al LDH has a higher interlayer distance than Zn-Cr LDH, although Zn-Cr LDH has a higher surface area. The FT-IR analysis indicated the interlayer space of both Zn-Cr and Zn-Al LDH was dominated by CO32- as the interlayer anion species. The adsorption kinetics study of Congo Red on both LDH revealed that the adsorption process followed the pseudo-second-order model. For the adsorption isotherm, the experimental data fit well with the Freundlich model rather than the Langmuir model. The thermodynamic study indicated that the adsorption process that occurred on both adsorbents was spontaneous with exothermic nature.

KAJIAN INTERAKSI ION Co2+ DENGANSELULOSA DARI SERBUK GERGAJIKAYU Risfidian Mohadi; Nurlisa Hidayati; Adi Saputra; Aldes Lesbani
CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Volume 1, No. 2, 2013
Publisher : Magister Program of Applied Chemistry, Udayana University, Bali-INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (285.446 KB)

Telah dilakukan pemisahan selulosa dari serbuk gergaji kayu dengan menggunakan metanol dan HCldengan konsentrasi1%, 3%, 7%, dan 11%(v/v) dalam waktu 3 jam. Selulosa hasil pemisahan dikarakterisasi dengan spektroskopi FT-IR untuk selanjutnya digunakan sebagai adsorben ion logam Co2+ dalam medium air. Proses adsorpsi dipelajari melalui berbagai waktu interaksi, variasi konsentrasi, dan desorpsi terpisah. Spektrum infra merah menunjukan bahwa selulosa hasil pemisahan dari serbuk gergaji kayu dengan konsentrasi asam 5% memiliki kemiripan dengan spektrum inframerah selulosa standar. Konstanta laju adsorpsi ion logam Co2+ pada selulosa hasil pemisahan sebesar2.10-4 denganenergy adsorpsi sebesar 31,54 kJ/molserta pada serbuk gergaji kayu sebesar 4.10-4 dengan energy adsorpsi31,00kJ/mol. Kapasitas adsorpsi ion logam Co2+pada selulosa hasil pemisahan sebesar 0,55 x10-4 mol/g dan 0,09 x10-4mol/g untuk serbuk gergaji kayu. Desorpsi terpisah ion logam Co2+ menggunakan H2O, Na-EDTA, Amonium asetat, dan HCl menunjukan interaksi yang kuat ion logam Co2+ pada selulosa dan serbuk kayu. Separation of cellulosefrom wood sawdust using methanol and hydrocloric acid in acid concentrations of 1%, 3%, 7%, dan 11%(v/v) for 3 hours has been carried out. The cellulose was characterized using FT-IR spectroscopy and used as adsorbent for Co2+ metal ion in aqueous medium. Adsorption process was studied by varying the interaction time, concentration of solution, and desorption. The FT-IR spectrum of cellulose obtained from wood using 5% HCl has similarity withFT-IR spectrum of the standardcellulose. The adsorption rate constant and adsorption energy ofCo2+on cellulose obtained from wood sawdustare 2.10-4 and31,54 kJ/mol respectively,meanwhile those values are4.10-4 and 31.00 kJ/mol respectively on raw wood sawdust.The adsorption capacity of cellulose andof wood sawdust are 0,55 x10-4 mol/g and 0,09 x10-4mol/g, respectively.The separated desorption of Co2+ metal ion using H2O, Na-EDTA, Amonium acetic, and HCl showedthat Co2+wasstrongly bound to cellulose and wood sawdust.

PRODUKSI BIODIESEL MELALUI REAKSI TRANSESTERIFIKASI MINYAK JELANTAH DENGAN KATALIS CANGKANG KERANG DARAH (Anadara granosa) HASIL DEKOMPOSISI Aldes Lesbani; Risma Kurniawati M; Risfidian Mohadi
CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Volume 1, No. 2, 2013
Publisher : Magister Program of Applied Chemistry, Udayana University, Bali-INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (167.565 KB)

Biodisel telah diproduksi dari minyak jelantah melalui reaksi transesterifikasi menggunakan katalis hasil dekomposisi kerang darah. Kerang darah didekomposisi pada berbagai temperatur dimulai dari 600-1100oC pada kondisi udara terbuka menggunakan furnace.Produk dekomposisi dianalisa menggunakan difraktometer X-Ray.Hasil penelitian menunjukkan temperatur optimum dekomposisi kerang darah terjadi pada temperatur 900oC.Pola XRD produk dekomposisi pada 900 oC mirip dengan pola XRD kalsium oksida standar. Penggunaan katalis hasil dekomposisi untuk produksi biodiesel menghasilkan viskositas dan densitas biodiesel sebesar 5,81 mm2/s dan 0,87 g/cm3. Hasil ini sesuai dengan standar biodiesel dari SNI yakni viskositas dan densitas yang disyaratkan SNI sebesar 2,3-6,0 mm2/s dan 0,85-0,89 g/cm3. Biodiesel was produced from waste cooking oil by transestrification reaction using decomposed cockle shell as catalyst. Cockle shell was decomposed at various temperatures ranging from 600-1100oC in open air condition using furnace. The decomposed product was analyzed using X-Ray diffractometer. The results showed that the optimum temperature for decomposition of cockle shell was at 900 oC. The XRD pattern of decomposed product at 900oC was similar with XRD pattern of calcium oxide standard. The use of decomposed shell to produce biodiesel resulted viscosity and density of biodiesel 5.81 mm2/s and 0.87 g/cm3, respectively. These results are appropriate with biodiesel standard form SNI where the viscosity and density of biodiesel from SNI value were 0.85-0.89 g/cm3 and 2.3-6.0 mm2/s.

STUDI INTERAKSI ION LOGAM Mn2+ DENGAN SELULOSA DARI SERBUK KAYU Risfidian Mohadi; Adi Saputra; Nurlisa Hidayati; Aldes Lesbani
Jurnal Kimia (Journal of Chemistry) Vol. 8, No. 1 Januari 2014
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Separation of cellulose from sawdust using methanol and hydrocloric acid in various acid concentrations has been carried out. Cellulose from sawdust was characterized using FT-IR Spectroscopy and XRD difractometer. The cellulose was used as adsorbent for Mn2+ and Co2+ metal ions in aqueous medium. Adsorptions process was studied through variation of time interaction, concentration and separation desorption. FT-IR Spectrum shows that cellulose with 5% acid concentration has similarity with FT-IR cellulose standard. The XRD difractometer pattern of cellulose shows that cellulose has amorf structure. The adsorption rate constant of Mn2+ on cellulose from sawdust shows adsorption rate constant in cellulose is higher than in sawdust. Adsorption energy of Mn2+ metal ion in cellulose from sawdust was about 26.21 kJ/mol. The adsorption capacity of Mn2+ in cellulose is higher than in sawdust. The desorption of Mn2+ metal ion using H2O, Na-EDTA, Amonium acetic, and HCl shows that the adsorption mechanism of Mn2+ on cellulose and sawdust is dominated by chemical interaction.

STUDI REAKSI SIKLOPENTILSILAN DENGAN 4-IODIDA THIOANISOL MENGGUNAKAN KATALIS PALADIUM Aldes Lesbani; Risfidian Mohadi; Elfita Elfita
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 2 Juli 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

A study on cyclopentylsilane reaction in tetrahydrofuran with 4-iodo thioanisol has been carried out using palladium as catalyst under argon atmosphere at room temperature. The results showed that the product was tris(4-thioanisyl)cyclopentylsilane (1) which was obtained from recrystallization using methanol with the yield 35%. The Compound (1) has a melting point of 91.5-92.0 oC. Analysis using GC-MS found m/z 466 with six equivalent protons and eight carbons peak obtained from 1H and 13C NMR.

SINTESIS PESTISIDA FLUSILAZOL Aldes Lesbani; Hitoshi Kondo; Yoshinori Yamanoi; Hiroshi Nishihara
Jurnal Kimia (Journal of Chemistry) Vol. 6, No. 1 Januari 2012
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (244.901 KB)

Flusilazole pesticide has been synthesized through coupling reaction of organosilica and aryl halide using palladium catalyst in basic condition under argon atmospherie in two reaction steps. The product was characterized using 1H and 13C NMR spectroscopy at 500 MHz and 125 MHz respectively.The results of this research showed that the high yield of colorless oil product was obtained up to 70%. 1H and 13C NMR spectra have six and eight peaks respectively, which indicate the structure of flusilazole.

SINTESIS DAN KARAKTERISASI SENYAWA OKSOTRINUKLIR [Ru2Co(O)(OOCCH3)6(C5H5N)3](ClO4) Aldes Lesbani; Risfidian Mohadi; Nurlisa Hidayati
Jurnal Kimia (Journal of Chemistry) Vol. 6, No. 2 Juli 2012
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (220.583 KB)

The oxotrinuclear compound [Ru2Co(O)(OOCCH3)6(C5H5N)3](ClO4) has been synthesized using RuCl3?nH2O at room temperature under oxygen atmospheric condition. The oxotrinuclear complex was characterized by FT-IR spectrophotometer and mass spectrometer with cold spray ionization (CSI) method. The FT-IR spectra of the resulted oxotrinuclear compound show has specific vibration at 692 cm-1. This absorption is related to M3O vibration (M= metal). CSI-mass spectra of the oxotrinuclear compound show that pyridine as ligand was fragmented in oxotrinuclear compound.

Adsorption Desorption of Chromium (III) Ion on Cellulose from Wood Powder Risfidian Mohadi; Nurlisa Hidayati; Aldes Lesbani
International Journal of Science and Engineering Vol 7, No 1 (2014)
Publisher : Chemical Engineering Diponegoro University

This study of adsorption desorption of chromium ion on cellulose from wood powder has been carried out systematically and also wood powder was used as adsorbent control in this research. Adsorption process was studied through investigation of adsorption time and variation of chromium ion in the adsorption. Desorption process was investigated using several desorption reagents such as hydrochloric acid, ammonium acetate, sodium EDTA, and water. Data of adsorption time of chromium ion on cellulose and wood powder was calculated to obtain adsorption rate constant of chromium ion. Then the data of variation concentration of chromium was formulated to obtain adsorption capacity of chromium ion on cellulose and wood powder. The results showed that adsorption rate constant of chromium on cellulose is 0.007 min-1 and 0.002 min-1 for wood powder. Adsorption capacity of chromium ion on cellulose is higher than on wood powder while 76.92 mol/g for cellulose and 55.56 mol/g for wood powder. The results of desorption using various desorption shows sodium EDTA is appropriate reagent for desorption of chromium ion on both cellulose and wood powder. Keywords - adsorption, cellulose, chromium, desorption.

STUDY ADSORPTION DESORPTION OF MANGANESE(II) USING IMPREGNATED CHITIN-CELLULOSE AS ADSORBENT Aldes Lesbani; Ema Veronika Turnip; Risfidian Mohadi; Nurlisa Hidayati
International Journal of Science and Engineering Vol 8, No 2 (2015)
Publisher : Chemical Engineering Diponegoro University

Abstract- Study adsorption desorption of manganese(II) using impregnated chitin-cellulose as adsorbent has been carried out. Chitin was extracted from snail shell and cellulose isolated from rice straw. Chitin and cellulose were impregnated using thiourea as impregnant agent. Characterization of chitin and cellulose was performed using FTIR spectroscopy, determination of water content, and ash content, while impregnated chitin-cellulose was characterized using FTIR spectrophotometer and X-Ray diffractometer. The adsorption of Mn(II) on impregnated chitin-cellulose was studied through determination of adsorption time and the influence of Mn(II) concentration, while desorption was carried out sequentially using various reagents. The results shown that chitin and cellulose from extraction processes are has similar FTIR spectrum compared to chitin and cellulose standard. The FTIR spectrum of impregnated chitin-cellulose shows both vibration of chitin and cellulose appeared and indicated successfully impregnate. These results were also equal to XRD pattern analysis. The water and ash contents of chitin are 0.038% and 0.043 while for cellulose are 0.184% and 0.165%, respectively. The adsorption of Mn(II) on chitin and cellulose are quite similar kinetically, while adsorption of Mn(II) on impregnated chitin-cellulose is higher at the same time with chitin and cellulose. In the low concentration of Mn(II), adsorption phenomena are similar on chitin, cellulose, and impregnated chitin-cellulose. Desorption process of Mn(II) on the adsorbents shows sodium etilenediamine tetra acetate able to desorp Mn(II) up to 68% higher than other reagents. Keywords: Manganese(II), Chitin, Cellulose, Impregnated Chitin-Cellulose

Sintesis Tris(4-metoksifenil)tolilsilan dengan Teknik Reaksi Kopling Menggunakan Katalis Paladium Tersier Tributil Fosfin Aldes Lesbani; Risfidian Mohadi; Eliza Eliza
Jurnal Kimia Valensi Jurnal Valensi Volume 3, No.1, Mei 2013
Publisher : Syarif Hidayatullah State Islamic University

Telah disintesis senyawa tris(4-metoksifenil)tolilsilan (TMT) dengan teknik reaksi kopling menggunakan tolilsilan dan 4-iodida anisol yang dikatalis senyawa paladium. Reaksi dilakukan dalam kondisi inert dan suasana basa. Senyawa TMT hasil sintesis dikarakterisasi menggunakan kromatografi gas-spektrometri massa dan spektrometer 1H dan 13C NMR. Hasil penelitian menunjukkan bahwa senyawa TMT hasil sintesis memiliki rendemen sebesar 30%. Pengukuran menggunakan kromatografi gas-spektrometri massa menghasilkan nilai m/z sebesar 440. Spektrum 1H NMR menunjukkan lima puncak proton ekivalen dan spektrum 13C NMR menghasilkan sepuluh puncak karbon ekivalen. Hasil karakterisasi tersebut bersesuaian dengan struktur senyawa TMT hasil sintesis. Kata kunci: tris(4-metoksifenil)tolilsilan, reaksi kopling, paladium

Co-Authors A. Agnes Abi Sueb Abriyanto, Danang Addy Rachmat Adi Saputra Adi Saputra Adi Saputra Adi Saputra Afifah Rahma Dian Ahmad Fatoni Ahmad Fatoni Alfan Wijaya Alfan Wijaya Alfan Wijaya Amiruddin Supu Amri Amri Amri Andi Wijaya Andreas, Roy Andriani Azora Andriani Azora Anggraini, Ana Arini Fousty Badri Arini Fousty Badri Arison Musri Arison Musri Arsyad, Fitri Suryani Aslihati Aslihati Aslihayati Aslihayati Azhar Kholiq Badri, Arini Fousty Bakri Rio Rahayu Bakri Rio Rahayu Benyamin Lakitan Dedi Rohendi Dedi Setiabudidaya Desnelli Desnelli Dian Monariqsa Dian Monariqsa Didi Jasantri Dormian A N Haloho Dormian A N Haloho Eiffel Ostan Jeski Gultom Elfita Elfita . Elfita Elfita Eliza . Eliza Eliza Eliza Eliza Ema Veronika Turnip Endri Junaidi Eriza Sativa Erviana, Desti Fahma Riyanti Fatmawati Fatmawati Ferlinahayati Ferlinahayati Fitri Suryani Arsyad Fitri, Erni Salasia Fitriliana Fitriliana Hanifah, Yulizah Haris Kriswantoro Hermansyah Hermansyah Hermansyah Hermansyah Hesti A. Harahap Hesti A. Harahap, Hesti Hidayatullah, Muhammad Hilda Zulkifli Hilda Zulkifli Hilda Zulkifli Hiroshi Nishihara Hitoshi Kondo Idha Royani Intan Permata Sari Irfannuddin Irfannuddin Jasantri, Didi Jefri Jefri Jeri Ramadhan Juleanti, Novie Kiki Anggraini Kiki Anggraini Kiki Anggraini, Kiki Komis Krisna Murti Laila Hanum Leni Sinaga Lestari Simanjuntak Lestari Simanjuntak Liasari, Beta Riana Lingga, Fitra Wahyuni Lora Vitanesa Lucyanti . Lucyanti Lucyanti Lusi Teresia Mardianto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto Mardiyanto, Marieska Verawaty Mariska Verawaty Melantina Melan Oktriyanti Melwita, Elda Menik Setyowati Mikha Meilinda Christina Miksusanti Miksusanti Muhammad Imron Muhammad Said Muhammad Said Muhammad Said MUHAMMAD SAID Najma Annuria Fithri Najma Annuria Fithri Najma Annuria Fithri Najma Annuria Fithri, Najma Annuria Narsito Narsito Neza Rahayu Niken Oktora Niken Oktora Nirwan Syarif Normah Normah Normah Normah, Normah Nova Yuliasari Novie Juleanti Novie Juleanti Novie Juleanti Nur Ahmad Nur Ahmad, Nur Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nurlisa Hidayati Nur’aini, Siti Nyanyu Ummu Hani Palita Tamba Patimah Mega Syah Bahar Nur Siregar Patimah Mega Syah Bahar Nur Siregar Patimah Mega Syah Bahar Nur Siregar Poedji Loekitowati Hariani Putri Erlyn Putri, Bunga Indah R.A. Mika Melviana Rabelia Juladika Sayeri Radja Nardo Purba Rakhmawati Farma Ramadhan, Jeri Rananda Vinsiah Randi O. Saragih Ratna, L.P Ratna, L.P Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risfidian Mohadi Risma Kurniawati M Rohmatullaili Rohmatullaili, Rohmatullaili Roy Andreas Sabat Okta Ceria Sitompul, Sabat Okta Ceria Samat Samat Savira, Dila Setiawan Yusuf Setiawati Yusuf Setiawati Yusuf Sherly Agustina, Sherly Siregar, Patimah Mega Syah Bahar Nur Sitanggang, Jonra P. Soerya, Balada Sri Juari Santosa Suheryanto Suheyanto Suheryanto Sumiati Sumiati SUMIATI, Susila Arita Syaflina Lamin Syafrina Lamin, Syafrina Tamizi Taher Tarmizi Taher Welinda Me Wibiyan, Sahrul Wijaya, Alfan Winda Fitriana Yeni Iswanti Yoshinori Yamanoi Yosi Saria Yosi Saria Yosi Saria Yosine Susi Yosine Susie Yunita Irianty Zahara, Zaqiya Artha Zazili Hanafiah Zultriana

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