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All Journal Jurnal MIPA PHARMACON CHEMISTRY PROGRESS
Audy D. Wuntu
Universitas Sam Ratulangi
Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Medicine & Pharmacology Physics

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KAJIAN STABILITAS TERMAL DAN KARAKTER KOVALEN ZAT PENGAKTIF PADA ARANG AKTIF LIMBAH GERGAJIAN KAYU MERANTI (Shorea spp) Koleangan, Harry S. J.; Wuntu, Audy D.
CHEMISTRY PROGRESS Vol 1, No 1 (2008)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.1.1.2008.25

Abstract

A research considering the role of thermal stability and covalent character of activating agent on meranti timber sawmill-waste activated carbon using H3PO4 and CaCl2 as activating agents had been conducted. The result showed that activating agent having better higher covalent character yielded highest-adsorption activated carbon.
DERAJAT KRISTALISASI SEBAGAI FUNGSI WAKTU AGEING DAN WAKTU KRISTALISASI PADA SINTESIS ZEOLIT A DENGAN RADIASI GELOMBANG MIKRO Wuntu, Audy D.; Tangkuman, Herling D.
CHEMISTRY PROGRESS Vol 1, No 1 (2008)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.1.1.2008.21

Abstract

A-type zeolite has wide application in the field of catalysis and adsorption in industry and daily use as well. This material in a kind of synthetic material and can be synthesized from various raw materials and using various method, one of which is conventional hydrothermal condition. The use of microwave is one of the methods that can reduce the time needed for A-type zeolite synthesis. In this research, the power of the microwave is set to 720 Watt with ageing time of 0 hour and period of synthesis is set at the range of 0 to 50 minutes. Characterization of the zeolite synthesized using microwave was performed using infra red spectroscopy and the result was compared to that synthesized at conventional hydrothermal condition. The results showed that conventional hydrothermal condition at 0 hour ageing time and 5 hours crystallization period gave zeolite more crystallized than that resulted using microwave. The period of zero to 50 minutes crystallization time at microwave did not result in crystallized zeolite.
DETOKSIFIKASI SIANIDA PADA TAILING TAMBANG EMAS DENGAN NATRIUM METABISULFIT (Na2S2O5) DAN HIDROGEN PEROKSIDA (H2O2) Pitoi, Mariska Margaret; Wuntu, Audy D.; Koleangan, Harry S. J.
CHEMISTRY PROGRESS Vol 1, No 1 (2008)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.1.1.2008.23

Abstract

Experiments have been made to test the performance of Na2S2O5 and Cu’s method, H2O2’s method, and H2O2 and Cu’s method in cyanide detoxification in gold mining tailing with the varying theoretic concentration of the reagent was 100 %, 200 %, 300 %, 500 %, 750 %, and 1000 %. Tailing that used was taken from one of the people mining which used cyanide. It was treated with the three methods and six theoretic concentrations for four hours on magnetic stirrer. The result showed that Na2S2O5 and Cu’s method gave significant difference for CN free and CN WAD detoxification better than H2O2’s method and H2O2 and Cu’s method, whereas H2O2 and Cu’s method gave significant difference for CN free detoxification better than H2O2’s method but not for CN WAD detoxification. Theoretic concentration 750 % gave the best detoxification result but it was not have significant difference with 500 %, 300 %, and 200 % for CN free and 1000 %, 500 %, 300 %, and 200 % for CN WAD, so theoretic concentration 200 % was the economic considerations choice.
PEMANFAATAN VCO MENGANDUNG KAROTENOID TOMAT DAN KARAGENAN DALAM PEMBUATAN LOTION Tumbelaka, Riddel M.M.Y.; Momuat, Lidya I.; Wuntu, Audy D.
PHARMACON Vol 8, No 1 (2019): Pharmacon
Publisher : UNIVERSITAS SAM RATULANGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/pha.8.2019.22657

Abstract

PEMANFAATAN VCO MENGANDUNG KAROTENOID TOMAT DAN KARAGENAN DALAM PEMBUATAN LOTIONRiddel M. M. Y. Tumbelaka1), Lidya I. Momuat1), Audy D. Wuntu1)1)Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Unsrat Manado, 95115 riddeltumbelaka@gmail.comABSTRACT Research has been conducted on the making of Lotion using VCO containing Tomato Carotenoids and Carrageenan with a mass concentration of 3%. The stability of Lotion is determined by the stability of the emulsion in the Lotion preparation. The resulting Lotion was tested for quality according to SNI 16-4399-1996 standards, namely pH, density, viscosity, and total microbial test. In addition, the resulting Lotion was tested for total carotenoids based on the reading results of UV-Vis Spectrophotometry. The results showed that the highest carotenoids in A1 samples were 129.99 mg / L and the lowest was in A6 samples 38.15 mg / L. And the results of the Lotion quality test found in Lotion by using carrageenan were better than Lotion using cetyl alcohol.Keywords: VCO, carrageenan, carotenoids, Lotion, SNIABSTRAKTelah dilakukan penelitian tentang Pembuatan Lotion menggunakan VCO mengandung Karotenoid Tomat dan Karagenan dengan konsentrasi massa 3%. Kestabilan dari Lotion ditentukan dengan kestabilan emulsi dalam sediaan Lotion. Lotion yang dihasilkan diuji kualitas menurut standar SNI 16-4399-1996 yaitu uji pH, massa jenis, viskositas, dan total mikroba. Selain itu, Lotion yang dihasilkan diuji total karotenoid berdasarkan hasi pembacaan Spektrofotometri UV-Vis. Hasil penelitian menunjukkan bahwa yang memiliki Karotenoid tertinggi pada sampel A1 sebanyak 129,99 mg/L dan terendah pada sampel A6 38,15 mg/L. Dan hasil uji kualitas Lotion didapati Lotion dengan menggunakan karagenan lebih baik dibandingkan dengan Lotion menggunakan setil alkohol.Kata kunci: VCO, karagenan, karotenoid, Lotion, SNI 
DEGRADASI DAN ADSORBSI ZAT WARNA METHYLENE BLUE MENGGUNAKAN KOMPOSIT Ag-TULANG IKAN TERKALSINASI Kakame, Dewi Y. N.; Wuntu, Audy D.; Koleangan, Harry
CHEMISTRY PROGRESS Vol 11, No 2 (2018)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.11.2.2018.27940

Abstract

ABSTRAKPembuangan limbah berwarna ke lingkungan merupakan sumber pencemaran dan dapat menimbulkan bahaya seperti efek toksik.Untuk masalah limbah zat warna tersebut,metode fotodegradasi dan adsorpsi merupakan metode yang efektif karena diketahui dapat menguraikan senyawa zat warna menjadi senyawa yang tidak berbahaya. Tujuan penelitian ini untuk mengetahui kemampuan dari komposit Ag-tulang ikan terkalsinasi (Ag-TIK) dalam mendegradasi dan mengadsorpsi zat warna methylene blue. Penghilangan zat warna methylene blue dari larutan dengan pelarut air menggunakan komposit Ag-TIK dengan perbandingan Ag:Hidroksiapatit (HAp) 5:1 dan   3:3 berturut-turut mencapai 77% dan 75% dibawah radiasi sinar UV. pada penggunaan komposit Ag-TIK  3:3 tidak terjadi proses degradasi tetapi terjadi proses adsorpsi.Penggunaan cahaya lampu floresens dan tanpa cahaya memberikan hasil berturut-turut 69% dan 68% adsorpsi zat warna methylene blue. Eksperimen pengaruh lama penyinaran pada kemampuan komposit Ag-TIK untuk menghilangkan methylene blue menunjukan bahwa proses degradasi dan adsorpsi zat methylene blue terjadi sangat cepat dan kesetimbangan tercapai dalam waktu kurang dari 2 menit. ABSTRACTDisposal of colored waste into the environment is a source of pollution and can cause hazards such as toxic effects. For the problem of dye waste, the photodegradation and adsorption method is an effective method because it is known to be able to decompose dyestuff compounds into non-hazardous compounds. The purpose of this study was to determine the ability of calcined fish bone (Ag-CFB) composites to degrade and adsorb methylene blue dyestuff. The removal of dyestuff methylene blue from the solution with water solvent using Ag- CFB composite with a ratio of Ag: Hydroxyapatite (HAp) 5:1 and 3:3 respectively reached 77% and 75% under UV radiation. In the use of 3: 3 Ag-CFB composites there is no degradation process but the adsorption process occurs. The use of fluorescent and non-light lamps provides 69% and 68% adsorption of methylene blue dyes, respectively. Experiments on the effect of irradiation on Ag-CFB composite ability to remove methylene blue indicate that the degradation and adsorption process of methylene blue occurs very quickly and equilibrium is achieved in less than 2 minutes.
KINETIKA FOTODEGRADASI METILEN BIRU OLEH CAHAYA TAMPAK MENGGUNAKAN KOMPOSIT AG3PO4/AG/HAP DARI TULANG IKAN KAKAP MERAH (Lutjanus sp.) DENGAN PERLAKUAN ASAM Bando, Reksih Evander; Wuntu, Audy D.; Aritonang, Henry
CHEMISTRY PROGRESS Vol 12, No 2 (2019)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.12.2.2019.27927

Abstract

ABSTRAKTelah dilakukan penelitian tentang kinetika fotodegradasi pewarna sintetik metilen biru menggunakan material komposit yang dihasilkan dari tulang ikan kakap merah (Lutjanus sp.) terkalsinasi pada suhu 600-1000 oC. Tulang ikan terkalsinasi direaksikan dengan asam dan AgNO3 kemudian digunakan dalam kajian kinetika fotodegradasi. Sejumlah komposit diiteraksikan dengan larutan metilen biru dengan variasi waktu antara 2-180 menit di bawah radiasi sinar tampak dan konsentrasi metilen biru yang tersisa ditentukan dengan spektorfotometer uv-vis. Data dianalisis menurut model kinetika orde ke-1 dan ke-2. Hasil penelitian menunjukkan bahwa fotodegradasi metilen biru berlangsung mengikuti model kinetika orde ke-2. ABSTRACTMethylene blue photodegradation kinetics using materials synthesized from red snapper (Lutjanus sp.) bones calcined at 600-1000 oC has been investigated. Calcined bones were reacted with acid and AgNO3and were used in photodegradation kinetics study. Composites were interacted with methylene blue solutions for a periode of time in a range of 2–180 min under visible light and the dye remained in the solutions was determined using UV-Vis spectrophotometer. Data obtained were analyzed using first and second order kinetics model. The results showed that methylene blue was photodegraded by the composites under visible light according to the second order kinetics model. 
Penggunaan Karbon Aktif Cangkang Pala - TiO2 Untuk Fotodegradasi Zat Warna Metanil Yellow Patiung, Grace Aprianne Bellatrix; Wuntu, Audy D.; Sangi, Meiske S.
Jurnal MIPA Vol 3, No 2 (2014)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.3.2.2014.5991

Abstract

Telah dilakukan penelitian untuk mengetahui pengaruh perbandingan berat karbon aktif cangkang pala (KA) : titanium dioksida (TiO2), konsentrasi awal metanil yellow, dan lama penyinaran UV pada jumlah metanil yellow yang terdegradasi menggunakan KA-TiO2. KA dibuat melalui aktivasi arang cangkang pala menggunakan NaCl pada 700 oC. Pembuatan fotokatalis KA-TiO2 dengan perbandingan berat 0,1:9,9 (KA 1%) dan 0,5:9,5 (KA 5%) dilakukan dengan cara sonifikasi. Interaksi KA-TiO2 dengan metanil yellow dilakukan pada konsentrasi awal 2, 4, 6, 8, 10, 20, 30, 40, dan 50 ppm selama 3 jam. Eksperimen pengaruh lama penyinaran dilakukan pada variasi 1, 2, 3, 4, 5, 18, dan 20 jam. Hasil penelitian menunjukkan bahwa makin tinggi konsentrasi awal dan makin lama penyinaran, makin banyak metanil yellow terdegradasi. Fotokatalis dengan perbandingan berat KA:TiO2 0,1:9,9 mendegradasi metanil yellow lebih banyak dengan persen degradasi maksimum 66% pada konsentrasi awal 6 ppm.A research had been done to determine the effect of weight ratio of nutmeg shell activated carbon (KA) : titanium dioxide TiO2, initial concentration of metanil yellow, and UV irradiation time on the quantity of metanil yellow degraded using KA-TiO2. KA was prepared by activating nutmeg shell charcoal using NaCl at 700 oC. KA-TiO2 having weight ratio of 0.1:9,.9 (KA 1%) and 0.5:9.5 (KA 5%) were prepared by sonification. Interaction of KA-TiO2 with metanil yellow was performed at initial concentration of 2, 4, 6, 8, 10, 20, 30, 40, and 50 ppm for 3 hours. The experiment of UV irradiation time was performed at 1, 2, 3, 4, 5, 18, and 20 hours. The results showed that the higher the initial concentration of metanil yellow and that the longer the irradion time, the higher the amount of metanil yellow degraded. KA:TiO2 having weight ratio of 0.1:9.9 degraded more metanil yellow than that of 0.5:9.5 with maximum degradation of 66% at initial concentration of 6-10 ppm.
Kinetika Fotodegradasi Remazol Yellow Menggunakan Fotokatalis ZnO dan ZnO-Ag Taringan, Agres K.; Wuntu, Audy D.; Aritonang, Henry F.
Jurnal MIPA Vol 6, No 2 (2017)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.6.2.2017.17762

Abstract

Telah dilakukan penelitian tentang kinetika fotodegradasi remazol yellow dengan menggunakan ZnO dan ZnO yang disisipi 1%, 3%, 5%, 7%, dan 9% Ag yang disintesis dengan metode kopresipitasi. Eksperimen kinetika dilakukan melalui penentuan konsentrasi remazol yellow yang tersisa setelah interaksi ZnO dan ZnO-Ag dengan larutan remazol yellow yang disinari UV selama 0, 20, 40, 60, 80, 100, 120 dan 140 menit. Selanjutnya data dianalisis mengikuti model kinetika reaksi orde pertama. Hasil penelitian menunjukkan bahwa laju reaksi fotodegradasi oleh ZnO meningkat dengan penambahan konsentrasi dopan AgA research on photodegradation kinetics of remazol yellow using ZnO and Ag-doped ZnO (1, 3, 5, 7 and 9 wt% Ag) synthesized by co-precipitation method had been studied. Kinetics experiment was performed by determining the concentration of remazol yellow remained after interaction of ZnO and ZnO-Ag with remazol yellow solution that were irradiated by UV-light at 0, 20, 40, 60, 80, 100, 120 and 140 minutes. Data obtained was analyzed using firs-order kinetics model. The results showed that photodegradation rate was increased with the increasing Ag concentration.
Kinetika Adsorpsi Gas Benzena Pada Karbon Aktif Tempurung Kelapa Holle, Rizky B.; Wuntu, Audy D.; Sangi, Meiske S.
Jurnal MIPA Vol 2, No 2 (2013)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.2.2.2013.2997

Abstract

Telah diteliti kinetika adsorpsi gas benzena pada karbon aktif tempurung kelapa yang diaktivasi dengan NaCl dengan tujuan menentukan model kinetika yang dapat diaplikasikan untuk adsorpsi gas benzena pada karbon aktif tempurung kelapa. Data adsorpsi dianalisis dengan menggunakan empat model persamaan laju adsorpsi yaitu (1) persamaan laju order pertama pseudo Lagergren, (2) persamaan laju order kedua pseudo Ho, (3) persamaan Elovich, dan (4) persamaan Ritchie. Hasil kajian menunjukkan bahwa model kinetika dengan persamaan laju order ke-2 pseudo Ho adalah yang paling sesuai diaplikasikan untuk adsorpsi gas benzena pada karbon aktif tempurung kelapa. Dari model kinetika order ke-2 pseudo Ho diperoleh konstanta adsorpsi benzena sebesar 1,63x10-4 g mg-1 min-1. Nilai energi adsorpsi menunjukkan bahwa benzena teradsorpsi secara fisik pada adsorben.Kinetics of gaseous benzene adsorption on coconut shell NaCl-activated carbon had been studied. The research was aimed to determine the appropriate kinetic model applied to gaseous benzene adsorption on the adsorbent. Adsorption data was analyzed using four kinetic models of adsorption rate equation, which were (1) Lagergren’s pseudo first order rate equation, (2) Ho’s pseudo second order rate equation, (3) Elovich‘s equation, and (4) Ritchie’s equation. The results showed that the Ho’s pseudo second order rate equation was best applied to gaseous benzene adsorption on coconut shell activated carbon. The second order rate constant for benzene adsorption was 1.63x10-4 g mg-1 min-1. The value of adsorption energy showed that benzene was physically adsorbed on the adsorbent.
Uji Metode Olsen dan Bray dalam Menganalisis Kandungan Fosfat Tersedia pada Tanah Sawah di Desa Konarom Barat Kecamatan Dumoga Utara Umaternate, Ghazaly R.; Abidjulu, Jemmy; Wuntu, Audy D.
Jurnal MIPA Vol 3, No 1 (2014)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jm.3.1.2014.3898

Abstract

Telah dilakukan penelitian untuk menentukan konsentrasi fosfat tersedia pada tanah sawah dan membandingkan dua metode ekstraksi fosfat, yaitu metode olsen yang menggunakan reagen NaHCO3 dan metode bray yang menggunakan reagen Bray dan Kurtz. Hasil ekstrak direaksikan dengan pereaksi pewarna fosfat bersama deret standar dan diukur absorbansinya menggunakan spektrofotometer pada panjang gelombang 693 nm. Hasil penelitian menunjukkan bahwa ekstrak fosfat tersedia dari metode Olsen menunjukkan hasil konsentrasi yang tinggi berturut–turut 422,861; 771,614; 1389,464; 1607,386; 821,591; dan 1139,925 ppm, sedangkan metode Bray menunjukkan hasil yang lebih rendah berturut-turut 16,102; 13,899; 11,307; 7,181; 7,183; dan 9,073 ppm. Reagen NaHCO3 pada sampel menyebabkan pH naik sehingga banyak fosfat yang terlepas, sedangkan reagen Bray dan Kurtz menyebabkan pH turun dan lebih sedikit fosfat yang terlepas. pH sampel yang bersifat asam menyebabkan metode Bray lebih cocok untuk digunakan daripada metode Olsen karena metode Bray spesifik untuk tanah asam, sedangkan metode Olsen dapat digunakan untuk tanah asam dan basa.A study aimed to determine the concentration of phosphate available to the rice field soil and to compare the two methods of phosphate extraction, which are Olsen that uses NaHCO3 reagent and Bray that uses Bray and Kurtz reagents, had been done. The extract was reacted with phosphate coloring reagent and standards and the absorbance was measured using spectrophotometer at a wavelength of 693 nm. The results showed that the extract of phosphate available using Olsen method showed higher value of concentrations which were 422.861; 771.614; 1389.464; 1607.386; 821.591; and 1139.925 ppm. On the other hand, Bray method showed a lower value which were 16.102; 13.899; 11.307; 7.181; 7.183; and 9.073 ppm. NaHCO3 increased the pH and more phosphate was released, while the Bray and Kurtz reagent decreased the pH and less phosphate was released. Due to the lower pH of the sample, Bray method is more suitable for acidic soils rather than Olsen method because of its specificity for acidic soil, while the Olsen method can be used for acidic and alkaline soil.
Co-Authors Bando, Reksih Evander Christmas Togas Feti Fatimah Ghazaly R. Umaternate Grace Aprianne Bellatrix Patiung Haider Ali Ginting, Haider Ali Harry S. J. Koleangan Henry Aritonang Herling D. Tangkuman Jemmy Abidjulu Johnly Alfreds Rorong Julius S. Pontoh Kakame, Dewi Y. N. Koleangan, Harry Korompot, Abdul R.H. Lidya I. Momuat Ma’ruf, Hasna Mariska Margaret Pitoi Meiske S. Sangi Mira Marlinda Onggeteua, Fita M. Pandelaki, Elmi C.J. Rizky B. Holle Rosdiana Tidore Suhardi Titdoy, Suhardi Taringan, Agres K. Tumbelaka, Riddel M.M.Y. Vanda S. Kamu