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All Journal Jurnal MIPA PHARMACON CHEMISTRY PROGRESS JURNAL LPPM BIDANG SAINS DAN TEKNOLOGI Indonesian Journal of Chemistry Chemistry Indonesian Journal of Chemical Research Kumawula: Jurnal Pengabdian Kepada Masyarakat The Studies of Social Sciences Vivabio : Jurnal Pengabdian Multidisiplin Jurnal Ilmiah Sains
Audy Denny Wuntu
Program Studi Kimia FMIPA Universitas Sam Ratulangi, Manado
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Mathematics Medicine & Pharmacology Physics Public Health Social Sciences

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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.
CRYSTALLIZATION TEMPERATURE OF NaA ZEOLITE PREPARED FROM SILICA GEL AND ALUMINUM HYDROXIDE Wuntu, Audy; Kamu, Vanda; Kumanaung, Maureen
CHEMISTRY PROGRESS Vol 4, No 1 (2011)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.4.1.2011.26498

Abstract

ABSTRACTWuntu, A. D. et al. 2011. Suhu kristalisasi zaolit NaA yang disintesis dari silica gel dan aluminium hidroksida.Pengaruh suhu dalam tahap kristalisasi zeolit NaA telah dikaji dalam penelitian ini. Sintesis zeolit NaAdikerjakan pada kondisi hidrotermal konvensional menggunakan silika gel dan aluminium hidroksida sebagaibahan dasar dan kristalisasi dikondisikan pada suhu 60 oC, 75 oC, 90 oC, 105 oC, dan 120 oC. Kristalisasi zeolitNaA selanjutnya dianalisis dengan teknik spektroskopi infra merah. Hasil yang diperoleh memperlihatkanbahwa pada suhu 60 oC belum terbentuk kristal zeolit yang ditunjukkan dengan tidak adanya pita serapan yangmenjadi karakteristik zeolit A pada spektra infra merah. Pita serapan khas zeolit A muncul pada spektra inframerah zeolit yang diperlakukan pada suhu kristalisasi 75 oC hingga 120 oC.Kata kunci : kristalisasi, suhu, zeolite NaA, silika gel
ADSORPSI ASETON, BENZENA, DAN TOLUENA PADA KARBON AKTIF TEMPURUNG KELAPA SEBAGAI PEMBERSIH UDARA RUANG TERTUTUP Wuntu, Audy
CHEMISTRY PROGRESS Vol 1, No 2 (2008)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.1.2.2008.4953

Abstract

Adsorption of air pollutant volatile organic compounds, those are acetone, benzene, and toluene onactivated carbon prepared from coconut shell had been studied. The research was aimed to explore theadsorption capacity and adsorption energy of the compounds on coconut shell activated carbon understatic condition. In this condition, the adsorbent was stayed for 24 hours inside a closed bin containingsingle gas: actone, benzene, or toluene. The result showed that the adsorption capacity of thesecompounds on activated carbon was in the order of acetone > benzene > toluene. The same order wasobserved for the parameter of adsorption energy of the compounds on activated carbon Keywords: adsorption, adsorbent, activated carbon, coconut shell
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.
SINTESIS DAN KARAKTERISASI NANOGRAFIT Wulandari, Restu; Aritonang, Henry; Wuntu, Audy
CHEMISTRY PROGRESS Vol 10, No 2 (2017)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.10.2.2017.27745

Abstract

ABSTRACT The purpose of this research is to synthesis nanografite by using physics method. Nanografite  was synthesized using physics method by heating graphite powder at 1000oC. Characterization of nanografite was analyzed by using Scanning Electron Microscope (SEM). The result of the SEM characterization shows the heated nanographite at 1000 ° C having the smallest thickness of 20 nm and the largest 40 nm whereas in `unheated graphite heading has the smallest thickness size 169 nm and the largest 889 nm. From the results of the research can be concluded that the graphite powder heated at high temperatures can be nanografit so that the surface area is larger and can expand the application of nanografit. Keywords: nanografit, physics method, scanning electron microscope (SEM)    ABSTRAK Tujuan dari penelitian ini untuk mensintesis nanografit dengan mengunakan metode fisika. Nanografit disintesis menggunakan metode fisika dengan memanaskan serbuk grafit pada suhu 1000 oC Karakterisasi nanografit dianalisis dengan menggunakan Scanning Electron Microscope (SEM). Hasil dari karakterisasi SEM menunjukan nanografit yang dipanaskan pada suhu 1000 oC memiliki ukuran ketebalan terkecil 20 nm dan yang terbesar 40 nm sedangkan pada `sebuk grafit yang tidak dilakukan pemanasan memiliki ukuran ketebalan terkecil 169 nm dan yang terbesar 889 nm. Dari hasil penelitian dapat disimpulkan bahwa serbuk grafit yang dipanaskan pada suhu tinggi dapat menjadi nanografit sehingga luas permukaannya lebih besar dan dapat memperluas aplikasi dari nanografit. Kata kunci: nanografit, metode fisika, scanning electron microscope (SEM)   
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 
KINETIKA FOTODEGRADASI METHYLENE BLUE MENGGUNAKAN KOMPOSIT AG3PO4/AG/HAP TULANG IKAN KAKAP MERAH (LUTJANUS SP.) Pangajow, Stoflly E. M.; Wuntu, Audy; Sangi, Meiske S.
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.12.2.2019.27930

Abstract

ABSTRAKTujuan dari penelitian ini untuk mengkaji kinetika fotodegradasi methylene blue (MB) menggunakan komposit Ag3PO4/Ag/HAp tulang ikan kakap merah (Lutjanus sp.).  Serbuk tulang ikan yang dikalsinasi hingga 1000ºC dan direaksikan dengan AgNO3 dengan rasio mol 5:1 (Ag:HAp) dan dihasilkan komposit Ag3PO4/Ag/HAp. Larutan MB diinteraksikan dengan komposit dengan variasi waktu 5-180 menit dibawah radiasi cahaya tampak. Konsentrasi MB yang tersisa ditentukan ditentukan dengan spektrofotometer UV-Vis dan data yang diperoleh dianalisis dengan model kinetika reaksi orde ke-1 dan ke-2. Hasil penelitian menunjukkan bahwa fotodegradasi MB oleh komposit Ag3PO4/Ag/HAp mengikuti model kinetika fotodegradasi orde ke-2. ABSTRACT The purpose of this research was to study the kinetics of methylene blue (MB) photodegradation using composite Ag3PO4/Ag/HAp bone fish of red snapper (Lutjanus sp.). Fish bone powder which was calcined to 1000ºC and reacted with AgNO3 with mole ratio of 5 : 1 (Ag: HAp) and produced Ag3PO4/Ag/HAp composite. MB solution was interacted with composites with variation of time 5-180 minutes under visible light radiation. The remaining MB concentrations determined were determined by a UV-Vis spectrophotometer and the data obtained were analyzed with first and second order reaction kinetics model. The results showed that MB photodegradation by Ag3PO4/Ag/HAp composites followed the 2nd order photodegradation kinetics model. 
PENGARUH SUHU, KADAR GARAM DAN WAKTU PENGOLAHAN BAKASANG IKAN CAKALANG (KATSUWONUS PELAMIS) TERHADAP PARAMETER FREE FATTY ACID Syamsi, Ibnu Darmawan; Fatimah, Feti; Wuntu, Audy Denny
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.12.2.2019.27928

Abstract

ABSTRAK Bakasang adalah produk fermentasi yang dibuat dari jeroan ikan. Dalam penelitian ini bertujuan mengetahui pengaruh suhu, kadar garam dan waktu terhadap pengolahan bakasang ikan cakalang dibuat dengan berbagai kondisi pengolahan. Analisis yang dilakukan dengan menggunakan parameter FFA pada setiap sampel. Berdasarkan penelitian yang dilakukan kadar FFA tertinggi yaitu dengan suhu 30 ℃, kadar garam 10% dan waktu fermentasi selama 15 hari dengan kadar FFA sebesar 4,888 % dan kadar FFA terendah yaitu dengan suhu 50 ℃, kadar garam 20% dan waktu fermentasi 1,6 hari dengan kadar FFA sebesar 1.156 %. Tujuan dari penelitian ini adalah untuk menentukan pengaruh suhu, kadar garam dan waktu pengolahan (variabel independen) terhadap parameter FFA (variabel dependen), maka diperlukan beberapa metode statistika, pertama yaitu uji korelasi suhu, kadar garam dan waktu (variabel independen) terhadap kadar FFA (variabel dependen) dengan hasil penelitian, berturut-turut 56,6%; 29,6%; dan 60,1%, selanjutnya adalah uji analisis varians (ANOVA), ANOVA dilakukan pada 95% confidence interval dengan nilai signifikansi α=0,05, hasil signifikansi untuk variabel suhu, kadar garam dan waktu adalah 0.00. ABSTRACT Bakasang is a fermented product made from fish innards. This research aims to determine the effect of temperature, salinity and time on the processing of Skipjack Tuna Fish bakasang made with various processing conditions. The analysis was carried out using FFA parameters in each sample. Based on the research, the highest FFA level is at 30 ℃ temperature, 10% salinity and 15 days of fermentation time with FFA level of 4.888 % and the lowest FFA level is at 70 ℃ temperature, 20% salinity and 1.6 day of fermentation time with FFA level of 1.156 %. The aim of this research is to determine the effect of temperature, salinity and processing time (independent variables) on the FFA parameter (dependent variable), so some statistical methods are needed, first, the correlation test of temperature, salinity and processing time (independent variable) on FFA level (dependent variable) with the research results, respectively 56.6%; 29.6%; and 60.1%, next is the analysis of variance (ANOVA) test, ANOVA was carried out at 95% confidence intervals with a significance value of α = 0.05, variable significance for temperature, salinity and time was 0,00. 
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.
Co-Authors Abdul R.H. Korompot Andre G Kalensun Bando, Reksih Evander Bolilera, Theressa Bungan, Gladys K Christmas Togas Colling, Erningsi Dewi A Bukasa Djoni Hatidja Djoni Hatidja Edi Suryanto Edi Suryanto Feti Fatimah Ghazaly R. Umaternate Grace Aprianne Bellatrix Patiung Guntur Pasau Haider Ali Ginting, Haider Ali Harry Koleangan Harry S. J. Koleangan Harry S.J Koleangan Harry S.J Koleangan Harry S.J. Koleangan Harry S.J. Koleangan Henry Aritonang Henry F. Aritonang, S.Si., M.Si. Herling D. Tangkuman Jacobus, Meyffi Merrylin Jemmy Abidjulu Johnly Alfreds Rorong Julius Pontoh Julius S. Pontoh Kakame, Dewi Y. N. Koleangan, Harry Korompot, Abdul R.H. Kumanaung, Maureen Lengkong, Vanda Lidya I Momuat Lidya I. Momuat Lidya Irma Momuat Lidya Irma Momuat Lidya Irma Momuat Lidya Irma Momuat Lusiana Eka Sari Maanari, Chaleb Paul Ma’ruf, Hasna Makatipu, Christian D. Marini Runtu Mariska Margaret Pitoi Martin Aprilino Tambunan, Martin Aprilino Maureen Kumaunang Maureen Kumaunang Max R.J. Runtuwene Meiske S Sangi Meiske S Sangi Meiske S. Sangi Meiske Sientje Sangi, Meiske Sientje Michelle Poluakan, Michelle Mira Marlinda Muzakir Rahalus, Muzakir Norrytha L Wuntu Onggeteua, Fita M. Pandelaki, Elmi C.J. Pangajow, Stoflly E. M. Prasetyo, Yudhie E Pujiarti, Pujiarti Rizky B. Holle Rosdiana Tidore Runtu, Marini Sanusi Gugule Silvana Yoce Tuwohingide Stifanus Billy Pelle Suhardi Titdoy, Suhardi Syamsi, Ibnu Darmawan Talita Kojong Taringan, Agres K. Tatinting, Gabriel Dinnydio Tumbel, Elsa D. Tumbelaka, Riddel M M Y Tumbelaka, Riddel M.M.Y. TUMUAHI, FIRGIN PRITTY DEISYELLA Vanda Kamu Vanda Lengkong Vanda S Kamu Vanda S. Kamu Vanny H. Siwi Wuntu, Norrytha L Wuntu, Norrytha L. Yudhie E Prasetyo