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All Journal CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) Jurnal Kimia (Journal of Chemistry) Jurnal Farmasi Udayana Ecotrophic, Journal of Environmental Science CHEMISTRY PROGRESS Jurnal Pendidikan Seni Rupa JURNAL FISIKA JOIV : International Journal on Informatics Visualization Jurnal Sains Teknologi dan Lingkungan (JSTL) Indonesian Journal of Chemistry International Journal of Natural Science and Engineering Jurnal EDUTECH Undiksha Gema Agro JURNAL SILOGISME : Kajian Ilmu Matematika dan Pembelajarannya Indonesian Physical Review Jurnal Media Sains Jurnal Sewaka Bhakti Jurnal Penelitian Agama Hindu Journal of Applied Data Sciences AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) East Asian Journal of Multidisciplinary Research (EAJMR) Formosa Journal of Applied Sciences (FJAS) Jurnal Ilmu Pendidikan Indonesia Akses: Jurnal Penelitian dan Pengabdian Kepada Masyarakat Universitas Ngurah Rai Asian Journal of Community Services (AJCS) INCOME: Indonesian Journal of Community Service and Engagement Suluh Pendidikan: Jurnal Ilmu-ilmu Pendidikan Jurnal Wicara Desa

I Wayan Sudiarta

Program Studi Kimia FMIPA Universitas Udayana, Jimbaran, Bali, Indonesia

Author-ID : 387994

Religion Agriculture, Biological Sciences & Forestry Arts Humanities 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 Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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SINTESIS SILIKA GEL DARI ABU SEKAM PADI DAN ABU LIMBAH PEMBAKARAN BATU-BATA DENGAN METODE PRESIPITASI Isnawan Hadi; Made Arsa; I Wayan Sudiarta
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 1 Januari 2013
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Studies on synthesis of silica gel from rice hull and waste ofcombustion ash with prepitatian method have been. The studies was with the determination of the optimum temperature incineration of rice husk, the determination of the optimum concentration of NaOH in the manufacture of Sodium Silicate solution from rice hush and brick ash. Synthetic silica gel was obtained by boiling the ash with NaOH solution to create sodium silicate. This solution was neutralized with sulfuric acid and silica gel was produced. After washing and drying the silica gel was analyzed by spectrophotometer IR and X-ray Diffractometer. The result showed that the optimum incineration temperature of rice husk was 700oC, the optimum concentration of NaOH was 3M. Based on the characterization by IR, silica gel has been successfully created, marked by the absorption indicating and silianol of functional groups –OH at 3456,44-3487,30 cm-1and Si-O-Si or siloxane at 1103,28-1087,85 cm-1and X-RD analysis showed that silica gel formed was amorphous form.

SINTESIS DAN KARAKTERISASI SILIKA GEL DARI ABU VULKANIK GUNUNG AGUNG MELALUI TEKNIK SOL-GEL N. P. S. N. Utari; I W. Sudiarta; P. Suarya
Jurnal Kimia (Journal of Chemistry) Vol.14 No.1 Januari 2020
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Mount Agung in Karangasem, Bali which erupted in September 2017 produced abundant volcanic ash. This ash can be used as a raw material for making silica gel. The stages of the research carried out included analysis of the content of silicon (Si), synthesis of silica gel using sol-gel technique, characterization using FTIR, X-RD instruments as well as surface acidity. The results of the analysis using the X-RD instrument showed the presence of silicon from SiO2 found at 2? = 28,07530. The silica gel yield obtained in this study was 15.05% w/w. The results of the characterization with the FTIR instrument showed that silica gel from volcanic ash of Mount Agung had the main Si-OH and Si-O-Si groups. The hydroxyl bond from Si-OH grup were found at ±3649.32 cm-1 for stretching vibrations and ±1687,71 cm-1 for bending vibrations. Si-O bond from Si-O-Si group were found at ±1207.44 cm-1 for asymmetric stretching vibrations and ±482.20 cm-1 for bending vibrations. Diffractogram showed that the silica gel had an amorphous structure with surface acidity of 18.0222 mmol/g and a surface area of 36.5514 m2/g. Keywords: Agung mountain, silica gel, sol-gel, vulcano ash

SINTESIS SILIKA GEL TERIMOBILISASI DIFENILKARBAZON DARI ABU SEKAM PADI MELALUI TEKNIK SOL GEL Ni Nyoman Sri Nopianingsih; I Wayan Sudiarta; Wahyu Dwijani Sulihingtyas
Jurnal Kimia (Journal of Chemistry) Vol. 9, No. 2 Juli 2015
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

A research on synthesis diphenylcarbazone immobilized silica gel from rice husk ash by sol-gel technique has been conducted. The purpose of this research was to synthesize the diphenylcarbazone immobilized silica gel from rice husk ash by sol-gel technique. This research included modification of silica gel of rice husk ash and silica gel characterization by IR spectra and X-RD. The results showed that the diphenylcarbazone immobilized silica gel has been successfully synthesized. It can be seen from the FTIR spectrum that silica-imobilized revealed peaks at wave numbers of ±1087.85cm-1 indicating the presence of Si-O-Si. The peak seen at wave numbers of ±952.84cm-1 indicating the presence of Si-O, at ±3361.93cm-1due to the Si-OH bond which was the main functional group of silica gel. Another peaks at ±3313.71cm-1, ±800.46cm-1, ±1602.85cm-1,±1700 cm-1, and ±1602.85cm-1 suggesting the presence of N-H, aromatic C-H (substituted benzene), aromatic C=C, N=N and C=O stretching. X-RD data showed that the structure of diphenilcarbazone immobilized silica gel was amorphous.

BIOSORPSI Cr(III) PADA BIOSORBEN SERAT SABUT KELAPA HIJAU TERAMOBILISASI EDTA I Wayan Sudiarta; Wahyu Dwijani Sulihingtyas
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 (217.803 KB)

Studies on biosorption of Cr(III) on coconut fiber immobilized with EDTA biosorbent (B-EDTA) have been conducted. These studies included the optimization of EDTA immobilization on biosorbent, optimization of Cr(III) biosorption on B-EDTA biosorbent that include pH dan contact time biosorption, and also studied the mechanisms of Cr(III) interactions on biosorbent B-EDTA by squential desorption.The result showed that the optimum EDTA immobilization on biosorbent E-EDTA occured at ratio of 1mmol EDTA : 4g biosorbet (0,25mmol/g ), with the surface acidity of biosorbent B-EDTA of 2,18 mmol/g. Optimum biosorption process of Cr(III) on biosorbent B-EDTA occured at pH = 3, contact time of 120 minutes, with the biosorption capacity of Cr(III) on biosorbent B-EDTA of 8,32 mg/g. The squential desorption studies show that the interaction of Cr(III) on biosorbent B-EDTA occured predominantly through physical adsorption namely Van der Waals bonding.

BIOSORPSI ION Cr(III) PADA RUMPUT LAUT Eucheuma Spinosum TERAKTIVASI ASAM SULFAT I W. Sudiarta
Jurnal Kimia (Journal of Chemistry) Vol. 3, No. 2 Juli 2009
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 (282.887 KB)

Biosorption of chromium(III) ion on sulfuric acid activated algae (Eucheuma spinosum) biosorbent havebeen studied in this research. The studies included determination of optimum ratio of sulphuric acid to biosorbentalgae, biosorbent acidity, isoterm and biosorption capacity, and interaction mechanisms of Cr(III) on biosorbent. Themechanisms interaction of Cr(III) on biosorbent can be determinted from the sequential desorption of Cr(III) usingH2O, 1M HCl and 0.05M Na2EDTA.The result showed that the optimum ratio of sulphuric acid to biosorbent was 1.5 mmol/g. It was also foundthat the total acidity of acid-activated and untreated algae biosorbent were 8.56±0.21 and 2.59± 0.28 mmol/grespectively. The biosorption capacity of activated biosorbent toward Cr(III) was 72.33 mg/g while the capacity ofuntreated biosorbent was 57.32 mg/g. The interaction mechanisms of Cr(III) with biosorbent were found to bemainly through the ionic interaction, while the interaction through hydrogen bonding, van der Walls, andcomplexation were found to be relative us low.

ADSORPSI MULTI LOGAM BERAT KROM(III), TIMBAL(II), DAN TEMBAGA(II) DALAM SISTEM LARUTAN BINARY OLEH SILIKA GEL TERIMOBILISASI DIFENILKARBAZIDA I. W. Sudiarta; P. Suarya; C. M. P. Widya
Jurnal Kimia (Journal of Chemistry) Vol.12 No.2 Juli 2018
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Adsorpsi multi ion logam, timbal( P), tembaga(Cu), dan krom(Cr) dalam sistem larutan binary Pb(II)-Cr(III), Cr(III)-Cu(II), dan Pb(II)-Cu(II) menggunakan adsorben silika gel terimobilisasi difenilkarbazida (Si-DPZIDA) dengan metode bath adsorpsi pada pH 2 dan waktu pengadukan 8 jam. Sistem larutan binary terdiri dari ion logam utama dan ko-kation, dengan konsentrasi logam ko-kation bervariasi 0,5; 1,0; dan 1,5 mM, sedangkan konsentrasi ion logam utama tetap 5,0 mM. Tujuan adsorpsi multi ion logam ini adalah untuk mengetahui efek dari kehadiran ko-kation terhadap adsorpsi ion logam utama. Hasil penelitian menunjukkan bahwa kehadiran Cr(III) maupun Cu(II) sebagai ko-kation memberikan efek sinergis terhadap daya serap Pb(II), sinergistik tertinggi terjadi pada konsentrasi Cr(III) 1,5 M dan Cu(II) 1,0 mM dengan daya serap Pb(II) masing-masing 0,5808 dan 0,5867 mmol/g. Daya adsorpsi logam Cr(III) mengalami efek sinergistik dengan kehadiran ko-kation Pb(II) maupun Cu(II). Efek sinergis terbesar terjadi pada konsentrasi Pb(II) 0,5 mM dan Cu(II) 0,5 mM, masing-masing dengan daya sorpsi Cr(III) 0,1041 dan 0,1010 mmol/g. Pada adsorpsi ion logam utama Cu(II), kehdiaran Cr(III) maupun Pb(II) memberikan efek antagonistik. Efek antagonistik tertinggi terjadi pada kehadiran ko-kation Cr(III) dan Pb(II) pada konsentrasi 0,5 mM dan 0,5 mM, dengan daya serap Cu(II) masing-masing sebesar 0,2768 dan 0,2736 mmol/g. Kata kunci: adsoprsi multi logam, larutan binary, silika gel terimobilisasi, efek sinergistik, dan antagonistik

EFEK PEMBERIAN EKSTRAK ETANOL DAUN Spondias pinnata TERHADAP BERAT ORGAN GINJAL MENCIT BETINA Nallakrishna, I P. A.; Purwani, S. T. D.; Kardena, I M.; Sudiarta, I W.; Ariantari, N. P.
Jurnal Farmasi Udayana Vol. 4, No. 2, Tahun 2015
Publisher : Departement of Pharmacy, Faculty of Mathematics and Natural Science, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (59.202 KB)

Daun Spondias pinnata digunakan sebagai obat batuksecara tradisional.Berdasarkan penelitian sebelumnya, ekstrak daun S. pinnata memiliki aktivitas antituberkulosis terhadap isolat Mycobacterium tuberculosis strain Multi-drug resistant. Penelitian ini dilakukanuntuk mengetahui pengaruh pemberian ekstrak etanol daun S. pinnata terhadap organ ginjal pada mencit betina galur balb/c. Serbuk daun S. pinnata diekstraksi dengan menggunakan metode digesti, kemudian ekstrak diuji pada 25 ekor mencit betina galur balb/c yang terbagi dalam 5 kelompok perlakuan. Kelompok kontrol negatif diberikan suspensi CMC-Na 0,5% sedangkan kelompok perlakuan diberikan ekstrak dosis tunggal 0,015; 0,15; 1,5; dan 15 g/kg BB secara oral. Mencit dibedah dan diambil organ ginjalnya untuk diamati berat organnya. Perolehan data berat organkemudian dianalisis statistik dengan ANOVA-one way. Hasil menunjukkan terdapat perbedaan yangsignifikan pada berat organ ginjalmencit betina antara kelompok kontrol dengan kelompok perlakuan ekstrak dosis 15 g/kg BB. Pemberian ekstrak etanoldaun S. pinnata dosis tunggal sebesar 15 g/kg BB menyebabkan peningkatan berat organ ginjal. Perubahan berat organ menjadi salah satu indikator makroskopis terhadap adanya perubahan pada sel-sel organ akibat paparansuatu bahan uji.

BIOAKUMULASI LOGAM Pb DAN Cr DALAM SISTEM BIOFILTRASI VERTIKAL DENGAN INOKULUM BAKTERI YANG DIISOLASI DARI BEBERAPA PERAIRAN KAWASAN DENPASAR SELATAN Dini Imanniar; I.W. Budiarsa Suyasa; I. W. Sudiarta
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 10 No 2 (2016)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/EJES.2016.v10.i02.p07

Research of bioaccumulation of Pb and Cr in vertical biofiltration systems with bacterial inoculum derived from aquatic sediments South Denpasar aims to get the best sediment sources that can be used as an active suspension to process metals Pb and Cr dissolved. Sediment samples taken from some waters are ecosystems Mangrove Statue Ngurah Rai Tuban, Benoa Harbour and Estuary Dam Suwung. Each sediment samples were grown in a liquid medium to get the best active suspension, which was determined by an increase in biomass ( VSS ) and the speed of growth. Best active suspension is used as inoculum in the vertical biofilters to decreaseconcentration of Pb and Cr dissolved. Ability of vertical biofilter is determined by their effectiveness in lowering levels of Pb and Cr and capacity of the system used. The results showed that the vertical biofiltration system capable of lowering the concentration of Pb and Cr to each concentration became 0.1680 ppm and 0.1460 ppm within 6 hours of treatment with initial concentration of 2 ppm respectively. The results showed that the vertical biofiltration system capable of decreasing the concentration of Pb and Cr became 0.1680 ppm and 0.1460 ppm within 6 hours of treatment with initial concentration of 2 ppm respectively. This concentration has been below the qualitystandard (PerGub Bali No.8 Tahun 2007). The highest effectiveness of vertical biofilters system against Pb and Cr occurred while processing time of 24 hours with the respective value amounted to 99.49 % and 99.41 %. While the value of biofiltration capacity in lowering the concentration of Pb and Cr amounting 4,3188x10-3 mg/g and 4,5369x10-3 mg/g. In microbiological tests, one type of bacteria that play a role in the process of bioaccumulation of Pb and Cr is Bacillus sp in the amount of 20 CFU/g.

BIOSORPTION OF Cr(III) ION ON ALGAE Eucheuma spinosum BIOMASSA I Wayan Sudiarta; Ni Putu Diantariani
Indonesian Journal of Chemistry Vol 8, No 1 (2008)
Publisher : Universitas Gadjah Mada

Studies on biosorption and desorption of Cr(III) on algae (Eucheuma spinosum) adsorbent have been carried out. These studies included determination of biosorbent acidity, optimum pH, contact time of biosorption, isoterm and biosorption capacity, and mechanisms of interaction between Cr(III) and algae (E. spinosum) biosorben. Mechanisms of interaction were evaluated by sequential desorption of Cr(III) on algae biosorben by using aquadest, 1 M HCl and 0.05 M Na2EDTA. The result showed that the total acidity of algae biosorbent was 4.15 ± 0.33 mmol/g, the optimum pH was 3, and the optimum contact time was 20 min. Biosorption capacity of algae (E. spinosum) toward chromium (III) was 57.33 mg/g. The highest desorption of Cr(III) achieved when 1 M HCl was used, i.e. 51,01%, wheareas desorptions using aquadest and 0.05 M Na2EDTA were relatively low, i.e. 2.07% and 2.38% respectively. This result indicates that the main interaction mechanism of Cr(III) on algae was electrostatic attraction.

Co-Authors A. A. Bawa Putra A. A. Made Semariyani A. A. S. D. Prameswari A.A. Made Semariyani AA Made Semariyani Abror, Haekal Malik Acintya, N. M. T. C. Ade Ayu Wulan Suci Adinegoro, Cahyo Aditya, Ketut Tegar Afrida, Galuh Anak Agung Gede Agung Satrya Dwipayana Anak Agung Istri Agung Mayun Laksmiwati Anak Agung Purwa Antara, Anak Agung Purwa Andelita, Nanik Aprilianingsih, Rika Ardana, I Gusti Nengah Sura Aryanu Fahmi Arwangga Ayu Suardani Singapurwa, Ni Made Ayu Suardani Singapurwa, Ni Made Azmi, Aida Firdaus Muhamad Nurul Azzahra, Fatima Bira, Ela Tara Wini Budi Setiawan C. M. P. Widya Chindrawato, A.A. Sagung Manik Desak Putu Oki Lestari Dewa Gede Hendra Divayana, Dewa Gede Hendra Dewi, I G. A. K. S. P. Dewi, Ni Komang Putri Candra Dewi, Ni Made Putri Pradnya Paramita Dini Imanniar Diputra, Gede Ngurah Oka Dusak, Putu Gede Bayu Janardhana Dwi Ariani Yulihastuti Emmy Sahara Fahrul Rozi Faizin, Ahmad Nur Fauzi, Ihsan Gede Eka Harsana Koriawan Hafiza, Nurul Hanani, Hulfiatun Handayana, I Gusti Ngurah Yudi Henny Puspa Dewi Giri Huda, Lalu Sahrul I G. D. V. Saputra I Gde Suranaya Pandit I Gede Pasek Mangku I Ketut Sudita I M. S. Negara I M. Siaka I Made Kardena I Made Oka Adi Parwata I Made Tegeh I Nengah Muliarta, I Nengah I Nengah Simpen I P. G. A. Suandi I Putu Candra, I Putu I W BUDIARSA SUYASA I W. B. Arimbawa I Wayan Agus Arimbawa, I Wayan Agus I Wayan Pariawan I Wayan Parwata I Wayan Sudiarta I. A. R. Astiti Asih Ida Bagus Anom Sutanaya Iltizam, Muhammad Indra, I Kadek ISLAMUL HADI Isnawan Hadi jamili, syahrul Janurianti, Ni Made Defy Janurianti, Ni Made Defy Jelita, Ni Putu Ayu Bunga JOKO SUSANTO Kant, Mariam Lupita Kant, Mariam Lupita Kartamayasa, Gede Kartika, Amalinda KARYOTO, KARYOTO Ketut Ratnayani Krisjayanto H Kurniawidi, Dian Wijaya Kusuma, David Ali Jaya Laksmi, A.A. Ayu Kanaka Mutiara Langen Bronto Sutrisno Lestarini, Asri Lestina Sari Luh Suariani, Luh Luh Suriati M.Pd S.T. S.Pd. I Gde Wawan Sudatha . Made Arsa Made Ratih Mettaswari Senet Made Sutha Yadnya Maktun, Kintan Haiatul Manikam, Raseetha Vani Siva Marzuki Marzuki Maulana, M.Aril Milasari, Sri Muhammad, Syafiq Mulia, I Komang Oki Budi Mulia, Komang Oki Budi N. K. Elantiani N. P. D. Pebriani Nainggolan, L. Nallakrishna, I P. A. Nayun, I Wayan Ni Ketut Suminten Ni Luh Putu Putri, Setianingsih Ni Made Ayu Suardani Singapurwa Ni Made Darmadi Ni Made Rustini, Ni Made Ni Nyoman Sri Nopianingsih Ni Putu Ariantari Ni Putu Diantariani Oka Diputra, Gede Ngurah Oka Ratnayani P. Suarya P. Suarya P. Suarya Padmarini, Ni Made Andira Patni, Gusti Ayu Yunda Darma Prabandewi, Ni Luh Putu Ratih Pradnyadari, Luh Made Ayu Pratiwi, , Ni Luh Putu Yumi Mega Pratiwi, Ni Luh Putu Yumi Mega Priawibawa, Ghozi Purnomo, Amelia Putri Purwani, S. T. D. Putra, A. A. B. Putra, I Ketut Suwarmadi Putri Go Putri, , Ni Kadek Sintya Pradnyani Putri, , Putu Nanda Icaka Putri, Juliana Putri, Putu Ananda Icaka Putu Eka Trisna Dewi, Putu Eka Putu Suarya Rahayu, Sefani Cahyo Auliya Rahmatin, Ina Ramadhani Ramadhoan, Ramadhoan Ramadian Ridho Illahi Rindiani, Saptia Rini Andriani Robbaniyyah, Nuzla Af’idatur Roendah, Baiq Hildha Aulia Rudianta, I Nyoman Sabriana, Ofhi Sahara, Nova Nabila Sari, Ini Luh Putu Eka Kartika Satrijo Saloko Semariyani , A. A. Made Setianingsih, Luh Putu Putri Setianingsih, Ni Luh Putu Putri Singapurwa , Ni Made Ayu Suardani Sinta Purnamasari, Sinta Sopiani, Rani Sri Ratna Dewi, Sri Ratna Sriminingsih, Orien Suarka, I Made Suarsa, I W. Suarya P Subhan Subhan Subin, Maria Reinaldis Jebaut Sugiatma, Iksan Sukmadewi, Desak Ketut Tristiana Susanti, Elifah Rika Susanto, Roni Eko Susilawati, Ni Wayan Swetasoma, Cokorda Gede Tatang Mulyana Tiba, Andika Umbu Toya, I Nyoman Veliyana, Ayu Kadek Viani, Agata W. A. Fauzi Wahyu Dwijani Sulihingtyas Wardika, Ruzga Wati, Ni Made Serma Wedarama, I.G.P. Wedashwara Wedashwara, Wirarama Wibawa, Neorista Anggun wiwekananda, gusti surya Wulantari, N. M. P. Yasa, I Wayan Sweca Yasna, I Made Yunantariningsih, I Dewa Ayu Ketut

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