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All Journal Jurnal Kimia (Journal of Chemistry) Ecotrophic, Journal of Environmental Science Jurnal Media Sains Jurnal Ilmu Pendidikan Indonesia
A. A. Bawa Putra
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science Immunology & microbiology Mathematics Medicine & Pharmacology Physics

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INTERKALASI TETRAETIL ORTOSILIKAT (TEOS) PADA LEMPUNG TERAKTIFASI ASAM SULFAT DAN PEMANFAATANNYA SEBAGAI ADSORBEN WARNA LIMBAH GARMEN P. Suarya; A. A. Bawa Putra; Devi Wisudawan
Jurnal Kimia (Journal of Chemistry) Vol. 4, No. 1 Januari 2010
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 (135.786 KB)

Abstract

Interchalation of Tetraethyl orthosilicate (TEOS) with acid activated clay has been studied. As forcharacterization of the modified clay. Acid-base titration methode was used to determine the surface acidity.Methylen blue method was used to determine the surface area while spectrophotometer UV-Vis was used todetermine the amount of dye adsorbted by the modified clay.The results showed that activation of clay with sulphuric acid and interchalat ion with TEOS increased thesurface acidity of the clay. The value of surface acidity of S0-0(without activation); Sa-0(interchalated with TEOS 0%);Sa-5 (interchalated with TEOS 5%); Sa-10(interchalated with TEOS 10%); Sa-15 (interchalated with TEOS 15%) were0.5064; 0.8733; 0.8486; 1.0005; and 0.8926 mmol/gadsorbent respectively. The specific surface area of S0-0; Sa-0; Sa-5;Sa-10; Sa-15 were27.2391 m2/g; 28.4019 m2/g; 28.2767 m2/g; 29.2220; m2/g dan 29.1621 m2/g, respectively. Furthermore, it was shown that, acid actived clay interchalated with 10% TEOS was the best adsorbent which adsorbed83,64% of the dye indicated by the change of the colour from dark yellow to light yellow.
EFEKTIFITAS PENGOLAHAN AIR EFFLUENT MENJADI AIR REKLAMASI DI INSTALASI PENGOLAHAN AIR LIMBAH SUWUNG DENPASAR DITINJAU DARI KANDUNGAN KEKERUHAN, TOTAL ZAT TERLARUT (TDS), DAN TOTAL ZAT TERSUSPENSI (TSS) Luh Putu Widya Kalfika Devi; K. G. Dharma Putra; A. A. Bawa Putra
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (237.449 KB) | DOI: 10.24843/JCHEM.2013.v07.i01.p09

Abstract

The application of water reclamation system has been researched for the concentrations of Total Suspended Solid (TSS), Total Dissolved Solid (TDS), and turbidity in the effluent of waste water treatment in Suwung Denpasar. The aims of the research are to determine the effect of each stage of water reclamation, to determine the effectiveness water reclamation system and to know the quality reclaimed water. The results showed that each stage of water reclamation system can decrease the concentrations of TSS, TDS, and turbidity from effluent. The percentage of reduction of TSS, TDS, and turbidity  in biological filtration system were  85.60 %, 63.75 %, and 62.78 % respectively. The pre-ozonation system were 63.82 %, 64.93 %, and 73.78 % respectively and the coagulation and membrane systems were 60.58 %, 92.48 %, dan 74.58 % respectively. The overall rate of effectivenes of waste water reclamation system was 97.94% for TSS, 99.04% for TDS and 97.52% for turbidity.
IDENTIFIKASI SENYAWA ANTIRADIKAL BEBAS PADA RUMPUT LAUT Sargassum ringgoldianum I M. Dira Swantara; A. A. Bawa Putra; I P. Surya Udayana
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

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Abstract

The identification of antiradical compounds from Sargassum ringgoldianum seaweed has been conducted. Its metabolite extraction was carried out by maceration using ethanol and acetit acid mixture with ratio 9:1. It produced 7,02 gram crude extract from 230 grams of sample pollen. This crude extract has free-radical reduction activity of 66,50% at the fifth minute and 78,77% at the sixtieth minute. Separation and purification were carried out by partition, thin layer chromatography, and column chromatography. Partition was accomplished using petroleum ether, chloroform, ethyl acetate, and also water. Petroleum ether ectract had the highest free-radical reduction percentage, of 76,21%, which was obtained on the fifth minute, and 91,16% on the sixtieth minute. The petroleum ether extract was further separated with column chromatography, using stationary phase of silica gel 60 and mobile phase of a mixture of petroleum ether : acetone (7:3) and produced five fractions (FA, FB, FC, FD, dan FE). The most active fraction with antiradical activity was fraction B with percentage of free-radical reduction of 62,77% on the fifth minute and 92,19% on the sixtieth minute. This activity equals 93,06% of the antiradical activity of vitamin E. Fraction B was identified to consist of six compounds : ethyl myristate; dibutyl phthalate; ethyl palmitate; methyl isostearate; dioctyl phthalate; and 3?-bromo cholest-5-ene.
IMOBILISASI DIFENILKARBAZIDA PADA SILIKA GEL DARI ABU SEKAM PADI MELALUI TEKNIK SOL GEL Lestina Sari; I Wayan Sudiarta; Anak Agung Bawa Putra
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (175.377 KB) | DOI: 10.24843/JCHEM.2015.v09.i02.p03

Abstract

The research was conducted to observe diphenylcarbazide immobilization on silica gel from rice husk ash (Si-CPTMS-DPZida) with sol-gel technique. The aim of this research was to modify silica gel from rice husk ash by immobilization with diphenylcarbazide using sol-gel technique. This research included the modification and characterization of silica gel. The characterizations of silica gel were done by using infrared spectrophotometer (FTIR) and X-ray diffraction (X-RD). The results showed that the immobilized diphenylcarbazide silica has been formmed which is indicated by the appearance of Si-OH functional group in the peak at wave number 914,26 cm-1, Si-O-Si at 1091,71 cm-1, the stretching vibration of NH group at 3645 cm-1 and proved in 1492 cm-1 which is the bending vibrations of the NH group, CH (aromatic) at  802.39 cm-1, vibrational bending C = C (aromatic) at 1612 cm-1, vibration CN group at 1310 cm-1, and the vibrations of the C = O group in the area of 1685 cm-1. The X-RD data showed that the structure of Si-CPTMS-DPZida is amorphous.
EKSTRAKSI ZAT WARNA ALAM DARI BONGGOL TANAMAN PISANG (Musa paradiasciaca L.) DENGAN METODE MASERASI, REFLUKS, DAN SOKLETASI Anak Agung Bawa Putra; Ni Wayan Bogoriani; Ni Putu Diantariani; Ni Luh Utari Sumadewi
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (170.665 KB) | DOI: 10.24843/JCHEM.2014.v08.i01.p18

Abstract

We have conducted research on natural dyes extraction of banana (Musa paradiasiaca L.) weevil. The rendement concentration, its color, and their functional groups were determined using phytochemical test and ultraviolet-visible spectrophotometer. Extraction of natural dyes in the study was conducted by three methods namely maceration, reflux, and soxletation by using four kinds of extracting solvent including water, ethanol, acetone, and n-hexane. Color extract in water was dark brown, in ethanol and acetone was light brown, and in n-hexane was yellow. Each extract obtained by the three methods of each solvent was concentrated, their rendement were determined. The yields obtained by the maceration method using water was 8.12%, ethanol 2.40%, acetone 0.52%, and n-hexane 1.16%. The yields of the reflux method were 8.68%, 1.84%, 1.44%, and 1.04% respectively. The yields of the soxletation method were 4.80%, 1.12%, 0.44%, 0.56% respectively. The phytochemical test showed that the banana weevil dyes contained tannins and flavonoids. Absorption of the wavelength of energy ultra violet – visible detected at a wavelength between 200 nm up to 400 nm.
PEMANFAATAN ARANG BATANG PISANG (Musa paradisiacal) UNTUK MENURUNKAN KESADAHAN AIR Ni Made Shinta Megawati; Anak Agung Bawa Putra; James Sibarani
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (264.805 KB) | DOI: 10.24843/JCHEM.2013.v07.i02.p06

Abstract

The study about utilization of char made from banana (Musa paradisiacal) to reduce water hardness had been carried out. In this study, the surface area, equilibrium time of adsorption of metal ions, adsorption isotherm, capacity of adsorption, and the effect of pH on metal ions adsorption were used as parameters. Futher the optimum conditions were used to reduce the water hardness. The results of this study showed that the surface area, capacity of adsorption on Ca from 100 ppm solution were 3.3932 m2/g and 2.8112 mg/g respectively with equilibrium time of 90 minutes. Whereas, the capacity of adsorption on Mg2+from 75 ppm solution was 2.3371 mg/g with equilibrium time of 90 minutes. The adsorption capacity increased to the highest value at pH 7 which were 4.1197 mg/g and 3.0210 mg/g for Ca2+and Mg2+ respectively. The value of total hardness of water samples decreased by 63.057 mg/L in 4 hours contact time.
ANALISIS BILANGAN PEROKSIDA MINYAK SAWIT HASIL GORENGAN TEMPE PADA BERBAGAI WAKTU PEMANASAN DENGAN TITRASI IODOMETRI Dwi Anggraeni Putri Suandi; Ni Made Suaniti; Anak Agung Bawa Putra
Jurnal Kimia (Journal of Chemistry) Vol. 11. No. 1 Januari 2017
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 (155.711 KB) | DOI: 10.24843/JCHEM.2017.v11.i01.p11

Abstract

Minyak sawit merupakan salah satu jenis minyak yang biasanya dimanfaatkan untuk menggoreng berbagai hidangan. Mutu atau kualitas minyak goreng dapat mempengaruhi gizi pangan hasil gorengan yang selanjutnya minyak sisa gorengan dapat ditentukan nilai bilangan peroksida akibat adanya proses oksidasi. Penelitian ini bertujuan untuk menganalisis bilangan peroksida pada minyak goreng sawit yang telah digunakan untuk menggoreng tempe yang terkontaminasi logam berat Pb pada berbagai waktu pemanasan secara Iodometri. Hasil penelitian menunjukkan bahwa terjadi peningkatan bilangan peroksida minyak yang terkontaminasi Pb seiring bertambah lamanya waktu pemanasan minyak, yaitu berkisar antara 0,8715 meq/kg sampai 4,0852 meq/kg. Hasil tersebut mengindikasikan bahwa semakin banyak bilangan peroksida pada minyak maka semakin jelek kualitas minyak dan pangan yang digoreng. Adanya peningkatan bilangan peroksida pada penelitian ini tidak hanya disebabkan oleh adanya oksigen tetapi juga logam berat Pb yang terkandung dalam tempe yang digoreng.  
KADAR LOGAM SENG PLASMA DAN ALKOHOL DEHIDROGENASE PADA TIKUS YANG DIBERI ETANOL Elfrida Magdalena Manurung; Ida Bagus Putra Manuaba; Anak Agung Bawa Putra
Jurnal Kimia (Journal of Chemistry) Vol. 11. No. 1 Januari 2017
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 (381.468 KB) | DOI: 10.24843/JCHEM.2017.v11.i01.p16

Abstract

Penelitian ini bertujuan mengetahui kadar logam seng plasma alkohol dehidrogenase pada tikus yang diberi etanol 40 % dengan volume 2 mL dan 3 mL. Rancangan penelitian ini menggunakan Randomized Posttest Only Control Group Desain dengan dua kelompok perlakuan dan satu kelompok kontrol. Rata-rata kadar logam seng plasma pada tikus kontrol (K) dan tikus yang diberi etanol 40 % dengan volume 2 mL (P1) dan 3 mL (P2) adalah 445,83 ± 27,76 mg/L; 928,38 ± 183,13 mg/L; dan 1228,75 ± 80,00 mg/L. Hasil perhitungan rata-rata aktivitas alkohol dehidrogenase plasma pada tikus kontrol dan tikus yang diberi etanol 40 % dengan volume 2 mL dan 3 mL adalah 21,00 ± 0,34 ng/mL; 18,69 ± 0,31 ng/mL dan 17,05 ± 0,33 ng/mL. Hasil ANOVA menunjukkan p < 0,05 sehingga terdapat perbedaan bermakna kadar logam seng plasma dan aktivitas alkohol dehidrogenase  pada tikus kontrol dan tikus yang  diberi etanol 40 % dengan volume 2 mL dan 3 mL. Hasil analisis Tukey/HSD untuk kadar rata-rata logam seng plasma tikus kontrol dan tikus yang diberi etanol 40 % dengan volume 2 mL dan 3 mL memiliki perbedaan signifikan, yaitu terjadinya peningkatan kadar logam seng plasma  dan  pada aktivitas alkohol dehidrogenase dengan terjadi penurunan pada kelompok tikus yang diberi etanol 40 % dengan volume 2 mL dan 3 mL terhadap tikus kontrol.  
EFEKTIVITAS DAN KAPASITAS RESIN PENUKAR ANION DENGAN SISTEM BATCH DALAM MENGIKAT NITRAT DAN APLIKASINYA PADA AIR DARI SUMBER MATA AIR DI DESA SEDANG A.A. Bawa Putra
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 2 No 2
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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Abstract

It has been conducted a research concerning efficiency and capacity of anion resin changing in batchsystem to nitrate. The subsequent tools designs are applied to decrease nitrate level to the water source atSedang Village. Nitrate level analysis applies spectrophotometer ultraviolet-visible.The result of research shows that resin is able to decrease nitrate level beyond Water QualityStandard of Group B in its effectiveness between 99.98% - 99.99%, meanwhile its capacity is at 0.3608 mg/gin concentrated period of 190 minutes.The measurement of water sources in Sedang Village shows that these water sources have beenpolluted by nitrate (up to Water Quality Standard of Group B) for the level between 13.9212 ppm – 19.5920ppm. The usage of resin is able to decrease level of nitrate in water coming from these water sources to theirbelow level of Water Quality Standard.
SYNTHESIS AND CHARACTERIZATION OF MONTMORILLONITE/TiO2 COMPOSITES AS A PHOTOCATALYST IN REDUCING BOD AND COD OF DOMESTIC WASTEWATER Hayati, Ismi; Bawa Putra, Anak Agung; Sutha Negara, I Made
Jurnal Ilmu Pendidikan Indonesia Vol 12 No 1 (2024): JURNAL ILMU PENDIDIKAN INDONESIA
Publisher : Master of Science Education Program, Postgraduate Program of Cenderawasih University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jipi.v12i1.2535

Abstract

The development of hotels in Bali is increasing every year, this is directly proportional to the number of tourists and the waste generated. Hotel liquid waste has the potential to pollute the environment if there is no pre-disposal treatment. This study aims to obtain the best MMT/TiO2 composite that acts as an adsorbent and photocatalytic in reducing BOD (Biological Oxygen Demand) and COD (Chemical Oxygen Demand) levels of domestic wastewater. Composite synthesis was carried out by combining the top-down method, ball milling, and sonication. The ball milling method is used to produce montmorillonite, which has a smaller size, with a ball mass to sample mass ratio of 2:1 at a speed of 250 rpm. Variations in milling times of 0, 2, 4, and 6 hours were applied to determine the effect of milling time. The sonication method was used to obtain a smaller TiO2 particle size by exposing it to ultrasonic waves for 30 minutes. Calsination of the composite was carried out at a temperature of 400 °C. The results of composite characterization using the PSA (Particle Size Analyzer) showed that the composite did not meet the nanoparticle requirements because it had a particle size > 100 nm with a PI value > 0.5, which was still classified as polydispersity. NMT 6 has the best PI value of 0.65, which is then used to determine the optimum composite time to reduce BOD and COD levels. The optimum irradiation time obtained from composites in degrading waste is 90 minutes, which can reduce BOD levels by 78.53% and COD levels by 69%. The ability of composites NMT-6 to reduce BOD and COD levels is greater than that of montmorillonite and TiO2.
Co-Authors Devi Wisudawan Dwi Anggraeni Putri Suandi Elfrida Magdalena Manurung Hayati, Ismi I G. P. Sukmajaya A. P. T. I Gusti Agung Gede Bawa I K. G. Antara I Kadek Sutomo Putra I Made Dira Swantara I Made Siaka I Made Sutha Negara I P. Surya Udayana I W BUDIARSA SUYASA I Wayan Suarsa I Wayan Sudiarta Ida Ayu Ary Pramaswari Ida Bagus Putra Manuaba Ida Ratu Laila Imam Rasidi James Sibarani Ketut Gede Dharma Putra Komang Ari Gunapria Darmapatni Lestina Sari Luh Putu Widya Kalfika Devi Mahayani, Putu Ayu Erna N. W. Bogoriani Ni Komang Ariati Ni Luh Utari Sumadewi Ni Made Puspawati Ni Made Shinta Megawati Ni Made Suaniti Ni Putu Diantariani P. Suarya Putu Desitha Pratiti Kameswari Wisnawa