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All Journal JPMS (Jurnal Pendidikan Matematika dan Sains) Jurnal Penelitian dan Evaluasi Pendidikan Jurnal Kesehatan Lingkungan indonesia Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Pendidikan Indonesia Jurnal Pendidikan Fisika Indonesia Jurnal Pendidikan Fisika FKIP UM Metro JFA (Jurnal Fisika dan Aplikasinya) Jurnal Riset Fisika Edukasi dan Sains Indonesian Journal of Science and Education Jurnal Bioteknologi & Biosains Indonesia (JBBI) JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika) Jurnal Penelitian Pendidikan IPA (JPPIPA) INDONESIAN JOURNAL OF APPLIED PHYSICS Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) Jurnal Pendidikan Fisika dan Keilmuan (JPFK) Formatif: Jurnal Ilmiah Pendidikan MIPA Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA JTP - Jurnal Teknologi Pendidikan Kasuari: Physics Education Journal (KPEJ) Jurnal Teori dan Aplikasi Fisika Variabel Natural Science: Jurnal Penelitian Bidang IPA dan Pendidikan IPA Quantum : Jurnal Pembelajaran IPA dan Aplikasinya Jurnal Ilmiah Sains Jurnal Ilmu Fisika dan Terapannya (JIFTA)
Suparno Suparno
Departemen Pendidikan Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Negeri Yogyakarta
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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SISTEM PENJERNIHAN AIR GROUNDTANK LPPMP UNY SEBAGAI AIR MINUM DENGAN MEMANFAATKAN KARBON AKTIF BATOK KELAPA, PASIR AKTIF PANTAI INDRAYANTI, DAN KERIKIL AKTIF KALI KRASAK THE GROUNDTANK LPPMP UNY WATER PURIFICATION SYSTEM AS DRINKING WATER BY UTILIZING COCONUT SHELL ACTIVATED CARBON, INDRAYANTI BEACH ACTIVATED SAND AND KRASAK RIVER ACTIVATED GRAVEL FISSA SEPTY PRIMAWATI FISSA SEPTY PRIMAWATI; Suparno Suparno
Jurnal Ilmu Fisika dan Terapannya (JIFTA) Vol 5, No 3 (2016): Jurnal Fisika
Publisher : Prodi Fisika, Departemen Pendidikan Fisika

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AbstrakPenelitian ini bertujuan untuk mengetahui pengaruh volume dan jenis absorbent terhadap efisiensitransmisi cahaya (Et), TDS dan pH, mengetahui pengaruh jenis absorbent terhadap efisiensi penyerapan kadar besi(Ep), mengetahui pengaruh variasi perbandingan komposisi absorbent terhadap efisiensi transmisi cahaya (Et),TDS, pH, dan efisiensi penyerapan kadar besi (Ep), serta mengetahui pengaruh sistem FAS (Filtrasi, Absorbsi, danSedimentasi) terhadap penurunan kadar Coliform. Metode yang digunakan yaitu dengan sistem FAS yang terdiridari rangkaian pipa PVC sebanyak 5 buah dan tiga jenis absorbent. Pada seluruh kolom, absorbat mengalamiproses filtrasi dan absorbsi. Selain itu, diharapkan absorbat yang mengandung logam berat Fe mengalami prosessedimentasi pada kolom ke 2 dan 4. Hasil penelitian menunjukkan bahwa penambahan volume berpengaruhterhadap pertambahan efisiensi transmisi cahaya dan penurunan TDS. Et semakin meningkat dengan hasil tertinggiterdapat pada jenis karbon aktif batok kelapa yaitu sebesar (91± 2)%, sedangkan TDS cenderung menurun denganpenurunan tertinggi pada jenis kerikil aktif kali krasak yaitu sebesar (141,0±0,5) ppm. Ep tertinggi terdapat padajenis absorbent karbon aktif batok kelapa yaitu sebesar (90,6±0,2)%. Untuk variasi komposisi perbandinganabsorbent, Et tertinggi terdapat pada komposisi Karbon:Karbon:Pasir:Pasir dan Karbon:Karbon:Pasir:Kerikilsebesar (90±1)%, untuk penurunan TDS tertinggi pada komposisi Karbon:Karbon:Kerikil:Kerikil yaitu sebesar(138,0±0,5) ppm, dan Ep tertinggi pada komposisi Karbon:Karbon:Pasir:Pasir sebesar (89,9±0,2)%, sedangkan nilaipH konstan untuk semua komposisi. Hasil penurunan Coliform pada karbon aktif batok kelapa menunjukkanpenurunan dari 210 MPN/100 ml menjadi 9 MPN/100 ml.Kata Kunci: Penjernihan air, karbon aktif batok kelapa, pasir aktif pantai Indrayanti, kerikil aktif kali Krasak,filtrasi, absorbsi, sedimentasiAbstractThe objectives of this study are to examine the effect of volumes and types of absorbent on lighttransmission efficiency (Et), total dissolved solids (TDS) and pH, the effect of types of absorbent on Fe ionconcentrate absorption efficiency (Ep), the effect of variation in absorbent composition on light transmissionefficiency (Et), TDS, pH, and Fe ion concentrate absorption efficiency (Ep), and the effect of filtration, absorptionand sedimentation (FAS) system on the reduction of Coliform concentrate. Purification processes were carried outby using FAS system consisting of a series of 5 PVC columns with 3 types of absorbent. In all columns, absorbatsunderwent filtration and absorption process. In addition to the above, absorbates especially the heavy metal Fe isexpected to undergo sedimentation process. The results showed the increase of volume increases the lighttransmission efficiency and decreases TDS. On the other hand, pH remains constant with the increase of volume.The highest value of Et was found to be in ccoconut shell activated carbon (91±2)%, TDS decreases with lowestlevel was found to be in Krasak river activated gravel (141,0±0,5) ppm. The highest value of Ep in all the types ofabsorbent was found to be in the coconut shell activated carbon (90,6±0,2)%. For variation in absorbentcompositions, the highest value of Et was found to be in the composition of Carbon : Carbon : Sand : Sand andCarbon : Carbon : Sand : Gravel (90±1)%, the lowest level of TDS was found to be in the composition of Carbon :Carbon : Gravel : Gravel (138,0±0,5) ppm and the highest value of Ep was found to be in the composition ofCarbon : Carbon : Sand : Sand (89,9± 0,2)% and pH value was constant for all the compositions. The results ofColiform test on coconut shell activated carbon showed the reduction of Coliform concentration from 210MPN/100 ml to 9 MPN/100 ml.Keywords: Water purification, coconut shell activated carbon, Indrayanti beach activated sand, Krasak riveractivated gravel, filtration, absorption, sedimentation
PENGARUH BENTUK (POWDER, GRANULE, DAN GRAVEL) KARBON AKTIF KAYU AKASIA MANGIUM TERHADAP HASIL PENGOLAHAN AIR SELOKAN MATARAM THE EFFECTS OF THE ACTIVE CARBON FORMS (POWDER, GRANULE, AND GRAVEL) OF ACACIA MANGIUM WOOD ON THE RESULTS OF THE PROCESSING OF THE WATER IN SELOKAN MATARAM ahmad rizani ahmad rizani; suparno suparno
Jurnal Ilmu Fisika dan Terapannya (JIFTA) Vol 5, No 1 (2016): Jurnal Fisika
Publisher : Prodi Fisika, Departemen Pendidikan Fisika

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AbstrakTujuan yang hendak dicapai dalam penelitian ini adalah untuk mengetahui pengaruh bentuk karbon aktif terhadap debit air dan untuk mengetahui pengaruh bentuk karbon aktif (powder, granule, dan gravel) kayu akasia terhadap efisiensi absorbsi pada proses penjernihan air Selokan Mataram. Ukuran butiran karbon aktif yang digunakan adalah 100 mesh, 8 mesh, dan 4 mesh. Penelitian ini dilakukan dengan menggunakan teknik pertukaran ion pada tabung penukar ion yang dirancang sendiri dalam penyaringan air Selokan Mataram. Kejernihan air yang telah disaring diamati dengan mengukur intensitas transmisi cahaya dalam suatu bak penguji. Kemudian dibandingkan untuk setiap bentuk absorben dalam bentuk grafik sebagai fungsi bentuk absorben dan efisiensi absorbsi. Hasil penelitian menujukan semakin besar ukuran butiran karbon aktif yang digunakan sebagai bahan penyaring maka debit air saat proses penyaringan semakin besar. Karbon aktif dengan bentuk granule memiliki tingkat efisiensi absorbsi yang baik sebesar 73% pada massa 59.5 g.Kata kunci: Karbon aktif, powder, granule, gravel, efisiensi absorbsi.AbstractThe objective of this study is to investigate the effects of active carbon forms on water discharge and the effects of active carbon forms (powder, granule, and gravel) of acacia wood on the absorption efficiency in the process of the purification of the water in Selokan Mataram.The grain sizes of active carbon were 100 mesh, 8 mesh, and 4 mesh. The study was conducted by using the ion exchange technique in a self-designed ion exchanger tube to filter the water in Selokan Mataram. The purity of the filtered water was observed by measuring the intensity of light transmission in a testing tub. Each absorbent form was compared in a graph form as a function of absorbent forms and absorption efficiency. The results of the study show that the larger the sizes of active carbon grains used as filtering substances are, the larger the water discharge in the filtering process is. Active carbon in the form of granule has a good level of absorption efficiency of 73% at a mass of 59.5 g.Keywords:active carbon, powder, granule, gravel, absorption efficiency.
THE UTILIZATION OF BAMBOO ACTIVATED CARBON, INDRAYANTI BEACH ACTIVATED SAND, AND KRASAK RIVER ACTIVATED GRAVEL AS ABSORBENT ON PROCESS OF LPPMP UNY WATER PURIFICATION FOR DRINKING WATER Widiastuti Tri Widiastuti; Suparno Suparno
Jurnal Ilmu Fisika dan Terapannya (JIFTA) Vol 5, No 2 (2016): Jurnal Fisika
Publisher : Prodi Fisika, Departemen Pendidikan Fisika

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The aims of this research are to understand (1) the influence of volume and types of absorbent (bamboo activated carbon, Indrayanti beach activated sand, and Krasak river activated gravel) on light transmission efficiency (TE), TDS, and pH on LPPMP UNY water purification. (2) The influence of absorbent kinds on the absorption efficiency of Fe on LPPMP UNY water purification. (3) The influence of the absorbents composition variation on light transmission efficiency, TDS, pH, and the absorption efficiency of Fe on LPPMP UNY water purification. (4) The influence of the FAS (Filtration, Absorption, and Sedimentation) system absorption capacity on the decreases of the amount of coliform on LPPMP UNY water purification. First process of this research is carbonization of bamboo, crushing, sieving, washing, drying, and physics activation by oven heating at temperature of 200 oC for 1 hour. The second step is filtration, absorption, and sedimentation using a variation of the volume of each absorbent and volume ratio of absorbent kind composition are placed in the FAS pipe. The next step is the measurement of light transmission intensity, total dissolved solid, temperature, pH in all filtering water samples, and the measurement Fe and total coliform in given samples. The result of this research indicated that light transmission efficiency in the activated carbon, activated sand, and activated gravel on the water purification particles tends to increase, while TDS tends to decrease, and there was no cange on pH. The absorption efficiency of Fe best fit to the bamboo active carbon (90,3±0,2) %. The highest light transmission intensity could be found at the ratio of K:K:P:P (90±1) %. The TDS reach its best at the ratio K:K:Kr:Kr 141 ppm. The best absorption efficiency of Fe is at the ratio of K:K:P:P and K:K:Kr:Kr (90,3±0,2) %. The amount of coliform decreases to 0 MPN/100ml in 2450 ml sample.Keywords: absorbent, active carbon, light tranmission intensity, Fe, and coliform
PENGARUH VOLUME AIR TANAH TERHADAP DAYA SERAP SISTEM FAS (FILTRASI, ABSORBSI, SEDIMENTASI) BERBAHAN ARANG BAMBU DALAM PENENTUAN AMBANG BATAS PROSES PENJERNIHAN AIR MINUM THE EFFECT OF VOLUME TO THE ABSORPTION OF FAS SYSTEM (FILTRATION, ABSORPTION, SEDIMENTATION) MADE FROM BAMBOO CARBON IN ORDER TO DETERMINE THE THRESHOLD POINT OF THE DRINKING WATER’S PURIFICATION PROCESS Puthy Nurlina Sari; Suparno Suparno
Jurnal Ilmu Fisika dan Terapannya (JIFTA) Vol 9, No 2 (2022): Jurnal Fisika
Publisher : Prodi Fisika, Departemen Pendidikan Fisika

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AbstrakPenelitian ini bertujuan untuk mengetahui pengaruh volume air tanah laboratorium Fisika UNY terhadap efisiensi cahaya, TDS, pH, kadar logam Fe, dan kadar total MPN coliform dalam proses penyaringan menggunakan sistem FAS (Filtrasi, Absorbsi, dan Sedimentasi) Absorben yang digunakan dalam penelitian ini adalah karbon aktif bambu wulung, kerikil aktif Kali Krasak, dan pasir aktif Pantai Indrayanti. Penyaringan dilakukan berulang dengan variasi volume air tanah laboratorium Fisika UNY, Hasil Penelitian menunjukkan bahwa dengan meningkatnya volume air tanah laboratorium Fisika UNY yang diproses melalui sistem FAS maka efisiensi transmisi cahaya yang dihasilkan meningkat hingga 15% kemudian perlahan mengalami penurunan. TDS cenderung menurun hingga selisih 72 ppm, PH seluruh sampel besarnya sama yaitu 6.9, dan kadar logam Fe dalam air mengalami kenaikan sebesar 0.4 mg/L, sedangkan kadar total MPN coliform mengalami penurunan hingga 454 MPN/100 ml meskipun setelahnya kadar total MPN coliform mengalami penurunan secara perlahan.  Kata kunci: Total MPN coliform, Intensitas Transmisi Cahaya, Kadar Fe, dan Karbon Aktif BambuAbstractThis research aimed to know the effect of ground water’s volume obtained from the Yogyakarta State University Physics Laboratory to the light efficiency, Total Dissolve Solid (TDS), pH, concentration of Fe, and total MPN coliform contained on the purification process using FAS (Filtration, Absorption, Sedimentation) Absorbent materials that used on the purification system were Wulung bamboo’s activated carbon, Krasak River’s activated gravel, and Indrayanti Beach’s activated sand. Purification process was repeated with the ground water’s volume variations obtained from the YSU Physics Laboratory, and the result was measured using light transmission instrument with lux meter to determine the water’s transparency, digital TDS meter to determine the total of dissolves solid, digital pH meter to determine the acidity, and the total concentration of Fe and MPN coliform was measured in Yogyakarta Health Agency Laboratory.The result of the research showed that the efficiency of light transmission was increased to 15% within the increased volume of the YSU Physics Laboratory ground water given and slowly reduced, Total Dissolve Solid value was reduced with 72 ppm deviation, 6,9 pH value from all of the sample and increased Fe concentration in the amount of 0,4 mg/L, but MPN coliform concentration was reduced to 454 MPN/100 mL although the total of MPN coliform concentration reduced slowly. Keywords: The large amount of MPN coliform, light transmission intensity, Fe concentration, bamboo activated carbon
PENGARUH BENTUK (POWDER, GRANULE, DAN GRAVEL) KARBON AKTIF DARI BAMBU TERHADAP DEBIT DAN EFISIENSI ABSORBSI PADA PENJERNIHAN AIR SELOKAN MATARAM THE INFLUENCE OF FORM (POWDER, GRANULE, AND GRAVEL) ACTIVATED CARBON FROM BAMBOO TO RATE OF FLOW OF WATER AND ABSORBTION EFFICIENCY IN WATER PURIFICATION SELOKAN MATARAM aldian nindya aldian nindya; suparno suparno
Jurnal Ilmu Fisika dan Terapannya (JIFTA) Vol 5, No 1 (2016): Jurnal Fisika
Publisher : Prodi Fisika, Departemen Pendidikan Fisika

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AbstrakPenelitian ini bertujuan untuk mengetahui pengaruh bentuk (powder, granule, dan gravel) karbon aktif dari bambu terhadap efisiensi absorbsi dan debit pada penjernihan sampel air Selokan Mataram. Metode yang digunakan adalah teknik pertukaran ion. Proses absorbsi terjadi saat sampel dilewatkan ke dalam kolom penukar ion yang berisi absorben. Selama proses absorbsi dicatat lamanya waktu yang dibutuhkan. Air hasil penjernihan diuji transmisi cahaya untuk kemudian dibandingkan dengan nilai transmisi cahaya air mineral kemasan. Hasil penelitian menunjukkan bahwa nilai debit maksimal adalah saat massa absorben 13 gram dengan nilai Q untuk powder (0,72 ± 0,05) ml/menit, granule (17 ± 2) ml/menit, dan gravel (57 ± 4) ml/menit. Hasil penelitian juga menunjukkan bahwa nilai efisiensi absorbsi maksimum diperoleh pada massa absorben 37 gram dengan nilai η untuk gravel (79 ± 2)%, granule (94 ± 2)%, dan powder (90 ± 3)%. Karbon aktif granule memiliki nilai debit dan efisiensi absorbsi yang lebih baik bila dibandingkan dengan powder sehingga dapat menjadi solusi mengatasi terjadinya penyumbatan (clogging).Kata kunci: Karbon aktif, granule, gravel, powder, debit aliran air (Q), efisiensi absorbsi (η).AbsractThe study aims to determine the effect of form (powder, granule, and gravel) activated carbon from bamboo to absobtion efficiency and rate of flow of water in water sampel purification selokan mataram. The method used is the techniqueof ion exchange. Absorbtion process occurs when the sample is passed through an ion exchange column contain an absorbent. During the absorption process noting the length of time required. Water purification result tested light transmision and then compared with the value of light transmision bottled mineral water. The result showed that the value of the maximum rate of flow of water is when the absorbent mass 13 grams with a value of Q for powder (0,72 ± 0,05) ml/min, granule (17 ± 2) ml/min, and gravel (57 ± 4) ml/min. The result also showed that the value of the maximum absorption efficiency acquired the absorbent mass 37 grams with a value of η for gravel (79 ± 2)%, granule (94 ± 2)%, dan powder (90 ± 3)%. Activated carbon granule has a value of rate of flow of water better absorption efficiency when compared with the powder so that it can be a solution to overcome the clogging.Keyword: activated carbon, granule, gravel, powder, rate of flow of water (Q), absorbtion efficiency (η).
PENGARUH PENAMBAHAN KONSENTRASI SURFAKTAN Na2EDTA TERHADAP TEGANGAN PERMUKAAN DAN VISKOSITAS OLI PERTAMINA ENDURO 4 STROKE THE EFFECT OF SURFACTANT CONCENTRATION OF DISODIUM ETHYLENEDIAMINETETRAACETIC SALT (Na2EDTA) ON THE SURFACE TENSION AND VISCOSITY OF PERTAMINA ENDURO 4 STROKE ENGINE OIL andri nur priyatno andri nur priyatno; suparno suparno
Jurnal Ilmu Fisika dan Terapannya (JIFTA) Vol 5, No 1 (2016): Jurnal Fisika
Publisher : Prodi Fisika, Departemen Pendidikan Fisika

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ABSTRAKPenelitian ini bertujuan untuk mengetahui pengaruh penambahan konsentrasi surfaktan terhadap tegangan permukaan dan viskositas oli mesin Enduro 4 Takproduksi Pertamina dengan klasifikasi SAE 20W-50.Surfaktan yang digunakan yaitu Na2EDTA (Disodium Ethylenediaminetetra acetic Salt) dengan Konsentrasi yaitu 0,43M, 0,65M, dan 0,87M. Setiap konsentrasi surfaktan dimasukan kedalam oli dengan satuan persen volume surfaktan dalam larutan yaitu 2%, 4%, 6%, 8%, 10%, 15%, 20%, 25%, dan 30%. Metode yang digunakan untuk menentukan tegangan permukaan larutan adalah cincin Du Nouy dan dalam menentukan viskositas larutan menggunakan metode viskometer Ostwald.Hasil penelitian oli mesin Enduro 4 Tak murni pada 27oC memiliki nilai tegangan permukaan (103 ± 1) mN/m dan nilai viskositas (86± 1) cP. Pengaruh penambahan konsentrasi surfaktan ke dalam oli akan cenderung menaikkan nilai tegangan permukaan oli. Kenaikan nilai tegangan permukaan terbaik, teruji pada penambahan konsentrasi surfaktan 0,65M dengan konsentrasi larutan 30% yaitu (122± 2) mN/m. Sedangkan pengaruh penambahan konsentrasi surfaktan ke dalam oli, akanmenaikkan nilai viskositas oli. Kenaikan nilai viskositas terbaik, teruji pada penambahan konsentrasi surfaktan 0,65 M dengan konsentrasi larutan 30% yaitu (444± 6) cP.Kata kunci : Oli Mesin Enduro 4 Tak, Surfaktan, Na2EDTA, Tegangan Permukaan, Viskositas.ABSTRACTThis study aims to determine the effect of adding a surfactant concentration to the surface tension and viscocity of the Enduro 4 Stroke engine oil of Pertamina production with classification of SAE 20W-50.The surfactant used is Na2EDTA (Disodium Ethylenediaminetetraaceti Salt) with concentrations 0.43 M, 0.65M and 0.87M. Each concentration incorporated into the oil with unit volume percent surfactant in solution which is 2%, 4%, 6%, 8%, 10%, 15%, 20%, 25%, and 30%. The method used to determine the surface tension of the solution is the Du Nouy ring method and in the determining the viscosity of the solution using Ostwald Viscometer method.The research results show the value of surface tension Enduro 4 Stroke engine oil at 27oC is (103 ± 1) mN/m and viscosity values (86±1) cP. The effect of adding the surfactants concentrations in the oil will tend to raise the value of the surface tension of the oil. The increase in surface tensionPengaruh Penambahan Konsentrasi ...(Andri Nur P.) 2value best, tested the addition of surfactant concentrations 0.65M solution with a concentration 30% of is (122 ± 2) mN / m. While the effect of adding the surfactants concentrations in the oil, will raise the value of the vicosity of the oil. The increase in the value of the best viscosity, tested the addition of surfactant concentration of 0.65 M with a concentration of 30% is (444 ± 6) cP.Keywords: Enduro 4 Stroke Engine Oil, surfactant, Surface Tension, Viscocity.
CHARACTERISTICS OF SILVER NANOPARTICLES FROM ELECTROLYSIS TECHNIQUES BASED ON UV-VIS SPECTROPHOTOMETER AMD PARTICLE SIZE ANALYZER (PSA) TEST Regina Dwistika , Suparno
Jurnal Ilmu Fisika dan Terapannya (JIFTA) Vol 7, No 5 (2018): Jurnal Fisika
Publisher : Prodi Fisika, Departemen Pendidikan Fisika

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Abstrak Penelitian ini bertujuan untuk mengetahui pengaruh tegangan dan waktu terhadap konsentrasi larutan nanopartikel perak yang dihasilkan dari proses produksi elektrolisis dan untuk mengetahui karakteristik nanopartikel perak yang dihasilkan dari teknik elektrolisis. Penelitian ini dimulai dengan membuat larutan nanopartikel perak dengan teknik elektrolisis dan mengukur konsentrasi larutan yang diperoleh dengan TDS. Kemudian menguji absorbansi nanopartikel perak dengan menggunakan spetrofotometer Uv-Vis dan menguji ukuran nano partikel perak dengan particle size analyzer (PSA). Hasil penelitian ini menunjukkan bahwa terdapat hubungan antara tegangan dan waktu elektrolisis terhadap konsentrasi larutan nanopartikel perak. Karena semakin lama durasi (waktu) elektrolisis dan semakin besar tegangan elektrolisis yang ditentukan maka konsentrasi larutan yang didapat semakin tinggi pula. Karakteristik nanopartikel perak dapat dilihat dari warna nanosilver yang berubah dari kuning menjadi kemerahan ketika konsentrasi larutan semakin tinggi. Hasil dari uji spektofotometer Uv-Vis, menunjukkan bahwa hasil dari konsentrasi larutan nanopartikel perak sebesar 16 ppm mampu menyerap cahaya pada panjang gelombang sebesar 425,50 nm dengan puncak absorbansi 0,214 . Hasil dari uji PSA menunjukkan bahwa larutan nanopartikel perak dengan konsentrasi 16 ppm memiliki ukuran nanopartikel perak sebesar 97,1 nm. Hal ini sesuai dengan teori , bahwa suatu bahan tergolong sebagai nanopartikel jika memiliki ukuran sebesar 1-100 nm. Kata Kunci : nanopartikel perak, spektrofotometer Uv-Vis, dan particle size analyzer ABSTRACT This study aimed to determine the correlation between voltage and time on the solution of silver nanoparticles concentration produced from electrolysis production process and to determine the characteristics of silver nanoparticles produced from electrolysis techniques. This study began by making a silver nanoparticles solution with electrolysis techniques and measuring the solution concentration that obtained from the TDS results. Then, performed Uv-Vis spetrofotometer to test the absorbance of silver nanoparticles using and particle size analyzer (PSA) to test the size of silver nanoparticles. The results in dicated that there was a correlation between voltage and electrolysis time on the silver nanoparticles solution concentration. More longer the electrolysis duration (time) and more higher the determined electrolysis voltage, then the concentration of the obtained solution obtained became higher too. The characteristics of silver nanoparticles can beseen from the nanosilver color that changes from yellow to reddish when the solution concentration became higher. The results of the Uv-Vis spectrophotometer shown that 16 ppm concentration of silver nanoparticles solution can absorb 425.50 nm wave length with 0.214 maximum absorbent value of light. The results of the PSA test stated that the size of 16 ppm concentration of silver nanoparticles solution only 97.1nm. This was in accordance with the theory, that a material was classified as a nanoparticle if it had a size of 1-100 nm. Keywords: silver nanoparticles,spectrofotometer UV-VIS, and particle size analyzer
Physical and Mechanical Characteristics Analysis of Partition Composite Board Made of Coconut Shell Material Mega Safana; Suparno Suparno; Rangga Alif Faresta
Jurnal Penelitian Pendidikan IPA Vol. 9 No. 5 (2023): May
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i5.3221

Abstract

This research aims to examine the effect of the thickness of coconut shell composite board on elasticity, sound absorption, water absorption, and density. The elasticity test was conducted using the tensilon RTF2350 machine at the Faculty of Mechanical Engineering and the sound absorption test was conducted using the sound level meter GM1352 at the Faculty of Science and Mathematics of the State University of Yogyakarta. The thickness of the composite board was varied, and its elasticity was measured using the tensilon RTF2350 machine, the sound absorption measurement was determined using a sound level meter with a sound source from a sound generator with a frequency of 1000Hz and intensity of 20 dB, while the thickness was varied. The elastic modulus decreased with the increase in partition thickness, sound absorption decreased with the increase in partition thickness, and water absorption increased with the increase in partition thickness. Water absorption was determined by submerging the partition into distilled water for 30 seconds and observing the mass before and after immersion into the water.
Pengaruh Massa Pasir Silika terhadap Penurunan Konsentrasi Fe pada Sistem Penjernihan Air Nadia Natalia Simamora; Suparno Suparno
Jurnal Penelitian Pendidikan IPA Vol. 9 No. 9 (2023): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i9.3416

Abstract

This study aims to determine the effect of silica sand mass in the air purification system on the decrease in Fe concentration. The type of research used is experimental research. The water purification media used in the research were silica sand and gravel. The mass of gravel used in the water purification system is constant, namely 500 grams. The mass of silica sand used varies, namely 200 grams, 400 grams, 600 grams, 800 grams and 1000 grams. The research was carried out through three stages, namely the stages of preparation, implementation, and data collection. The effect of the mass of silica sand in the air purification system on decreasing the concentration of Fe showed positive results. The results of research with a fixed mass of gravel and varying masses of silica sand showed a decrease in Fe concentration after water purification with a value that met environmental health quality standards and water health requirements Fe (iron) content below 1 mg/L or ppm so that the water worth using.
Antibacterial Activity of Cinnamomum burmannii Extract Against Escherichia coli Febrina Rosa Winda; Suparno Suparno; Zuhdan Kun Prasetyo
Jurnal Penelitian Pendidikan IPA Vol. 9 No. 11 (2023): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i11.4045

Abstract

This study aims to determine the antibacterial activity of the cinnamon extract in inhibiting the growth of Escherichia coli. The research design was a laboratory experiment consisting of three phases, namely the preparation phase of cinnamon extract using the maceration method using 96% ethanol, the characterization phase consisting of qualitative analysis with phytochemical tests and quantitative analysis with UV-Vis spectrophotometry, and the application phase including antibacterial activity test by disc diffusion method (Kirby-Bauer Test). The concentration series were 20%, 40%, 60%, 80%, and 100%, chloramphenicol as the positive control and methanol as the negative control. The results showed that cinnamon extract positively contained flavonoids with a total content of 1.310 mg QE/g or 0.131%. Cinnamon extract is effective as an antibacterial in the medium category with the optimum concentration to inhibit Escherichia coli is 40% indicated by the diameter of the inhibition zone of 9.55 mm at 12 hours of incubation. Therefore, the cinnamon extract has potential activity against Escherichia coli.
Co-Authors Abdul Aziz N Rohman Agustihana, Seftyan ahmad rizani ahmad rizani aldian nindya aldian nindya Ali, Mohammad Ryan Mahsun andri nur priyatno andri nur priyatno Ariswan Ariswan Ariswan Ariswan Ariswan Ariswan Arwan, Nur Anisa Bambang Ruwanto Beatrix Elvi Dasilva Beatrix Elvi Dasilva Devi Afriani Devika Khoirul Hafifah Devy Nurmayanti Djemari Mardapi Doni saputra Edi Istiyono Erlin Eveline Febrina Rosa Winda Fika Fauzi FISSA SEPTY PRIMAWATI FISSA SEPTY PRIMAWATI Fitria Arifiyanti Handoyo Saputro Havid Noor Pamungkas Heru Kuswanto Himawan, Nur Arviyanto Ivandra Immanuela Latumakulita Jumadi Jumadi Khaireni Puspaningtyas Khasanah, Ayu Hana Umi Lia Desi Parwati Listanti, Anita Mardhiyyatin Naqiyah Mega Safana Mohamad Heru Mudilarto Mudilarto Muhammad Rizki Muhammad Zaini Nadhiroh, Nuraini Nadia Natalia Simamora Nadya Amalia Putri Hapsari Nadya Amalia Putri Hapsari Ningsih, Anissa Dwi Arista Nugroho Prasetya Adi Puji Hariati Winingsih Purwita, Tanty Dwi Purwoko Haryadi Santoso Puthy Nurlina Sari R. Yossi Aprian Sari Rahmatullah, R. Rangga Alif Faresta Rany, Tiara Delvika Ratna Dwi Astuti Rattiwizal Alpin Y Riki Perdana Rio Sebastian Rita Prasetyowati Rizky Aji Saputra Aji Rizky Aji Saputra Saraswati Kendis Intan Palupi Setyawati, Fadhilah Fitria Singgih Hutomo Aji Syayid Qosim M.J.A Tiara Delvika Rany Tiara Kusuma Ardiyati Tiara Kusuma Ardiyati Tri Utami Tuada, R N Vegisari Vegisari, Vegisari Warsono Warsono Warsono Warsono Widiastuti Tri Widiastuti Wipsar Sunu Brams Dwandaru Yeni Ristya Wardani Yohanes Kurniawan Yusman Wiyatmo Zuhdan Kun Prasetyo Zul Hidayatullah Zulia Nur Rachma Zulia Nur Rachma