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Reservoir Temperature Estimation By Using Geothermometry (Case Study on Geothermal Field Jaboi, Sabang) Eliyani Eliyani; Muhammad Isa; Khairi Khairi; Muhammad Rusdi
Journal of Aceh Physics Society Volume 8, Number 1, January 2019
Publisher : PSI-Aceh

Gunung api Leumo Matee dan Seumeuregoh, Jaboi Sabang memiliki potensi energi panas bumi sangat besar. Hal ini ditandai dengan adanya manifestasi yang muncul di permukaan seperti uap panas, fumarol dan sumber air panas. Oleh karena itu, perlu dikaji lebih dalam dan menyeluruh untuk mendapatkan informasi yang detail, terutama parameter suhu dan karakteristik batuan/mineral. Sebuah penelitian telah dilakukan untuk kajian geokimia terutama analisis kimia fluida panas bumi. Pendekatan untuk menentukan karakteristik fluida kimia panas bumi dilakukan dengan metode geotermometer untuk mengukur kandungan air (SiO2) dan gas (Na-K) serta konsentrasi anion dan kation. Berdasarkan data pengamatan lapangan dan hasil uji laboratorium yang sudah terstandarisasi menunjukkan bahwa suhu bawah permukaan untuk fluida cair adalah 228oC dan untuk gas sebesar 220oC. Hasil pengujian sampel fluida panas bumi menunjukkan bahwa manifestasi panas bumi Kawah I dan Kawah IV daerah Jaboi, Sabang sangat prospek untuk dikembangkan. Informasi fluida ini menjadi salah satu parameter dalam pengembangan potensi panas bumi. Oleh karena itu sangat penting ditindaklanjuti karena dapat menjawab kebutuhan energi yang ramah lingkungan dan energi terbarukan. The Volcano Leumo Matee and Seumeuregoh, Jaboi Sabang have enormous geothermal energy potential. This is characterized by the presence of surface manifestations such as hot steam, fumaroles and hot springs. Therefore, it needs to be studied more deeply and thoroughly to obtain detailed information, especially the temperature and rock/mineral characteristics. A study has been carried out for geochemical studies, especially chemical analysis of geothermal fluids. The approach to determine the characteristics of the geothermal chemical fluid is carried out by geothermometry to measure the water content (SiO2) and gas (Na-K) as well as the concentration of anions and cations. Based on field observations and standardized laboratory tests, the subsurface temperature for liquid fluids is 228oC and for gases of 220oC. The results of testing geothermal fluid samples show that the geothermal manifestations of Kawah I and Kawah IV Jaboi, Sabang are very prospects to be developed. This fluid information is one of the parameters in developing geothermal potential. Therefore, it is very important to follow up because it can answer the needs of environmentally friendly energy and renewable energy. Keywords: Volcano, Geothrmometry, jaboi, Sabang, Temperature

Instrumentation of realtime monitoring system towards level of C6H12O6, C2H5OH, CO2, temperature in tapai fermentation process Yuliani Yuliani; Khairi Suhud; Dedi Satria; Lelifajri Lelifajri; Binawati Ginting; Yuliani Aisyah; Fauzi Fauzi; Muhammad Syukri Surbakti
Journal of Aceh Physics Society Volume 10, Number 3, July 2021
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v10i3.19161

Abstrak. Tapai merupakan makanan yang dihasilkan dari hasil fermentasi, salah satunya berbahan dasar dari ubi kayu. Fermentasi oleh ragi (saccharomyces serevesiae) menjadikan perubahan kimia pada substrat karena aktivitas enzim yang dihasilkan mikroorganisme. Parameter-parameter yang ditinjau adalah perubahan kadar C6H12O6, gas C2H5OH, gas CO2, suhu dan kelembapan dalam proses fermentasi melalui sistem pengukuran elektronik berbasis mikrokontroller Arduino Uno. Rangkaian sensor mengandung modul input yaitu sensor FC-28, sensor MQ-3, sensor MG-811, sensor DHT-11 dan modul pemroses mikrokontroler ATMEGA238 dengan sistem Arduino Uno dan pada komponen output menggunakan layar LCD 2X16. Kadar karakterisasi berdasarkan keluaran ADC (Analog to Digital Converter) untuk C6H12O6 adalah 535 untuk tapai ubi kayu. Kadar C6H12O6 akan terus menurun dari hari pertama sampai hari keempat yang mencapai 175 pada tapai ubi kayu. Diperoleh nilai akhir kadar gas C2H5OH yaitu 582. Kadar gas CO2 406 untuk tapai ubi. Selanjutnya nilai suhu 31oC untuk tapai ubi dengan nilai kelembaban 95RH. Waktu panen tapai dapat dipersingkat yaitu dari 7 hari menjadi 4 hari. Penelitian ini diharapkan dapat memberikan informasi pemakaian yang dapat dipergunakan untuk tampilan komposisi tapai secara komersial atau untuk tujuan kesehatan. Abstract. Tapai is food produced from fermentation, one of which is made from cassava. Fermentation by yeast (Saccharomyces serevesiae) causes chemical changes in the substrate due to the activity of enzymes produced by microorganisms. The parameters reviewed are changes in levels of C6H12O6, C2H5OH gas, CO2 gas, temperature and humidity in the fermentation process through an electronic measurement system based on the Arduino Uno microcontroller. The sensor circuit contains an input module, namely FC-28 sensor, MQ-3 sensor, MG-811 sensor, DHT-11 sensor and ATMEGA238 microcontroller processing module with the Arduino Uno system and the output component uses a 2X16 LCD screen. The grade based on the ADC (Analog to Digital Converter) output for the C6H12O6 is 535 for cassava tapai. Levels of C6H12O6 will continue to decline from the first day to the fourth day reaching 175 in cassava tapai. Obtained the final value of C2H5OH gas content is 582. CO2 gas content of 406 for cassava tapai. Furthermore, the temperature value of 31oC for cassava tapai with a humidity value of 95RH. The harvest time for tapai can be shortened from 7 days to 4 days. This research is expected to provide usage information that can be used to display tapai composition commercially or for health purposes. Keywords: fermentation, tapai, cassava, FC-28, MQ-3, MG-811, DHT11, Microcontroller.

Mercury Analysis of Body Lotion Cosmetic Using CVAAS Method: Case Study of Distributed Product in Banda Aceh Eka Safitri; Irmawati Irmawati; Khairi Suhud; Nurul Islami
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 5, No 2 (2020): June 2020
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v5.i2.35

The aim of this work is to determine the concentration of mercury in body lotion from several brands that are available in Banda Aceh. This research expected to provide information for the public and government related to the negative effects of harmful cosmetics that widely circulated. This information is useful into consideration of policy-making and monitoring the use of Hg metal. This study determined the type of body lotion cosmetics containing Hg metal by using Cold Vapor Atomic Absorption Spectroscopy (CVAAS) method. There are 22 samples and 11 of them have been selected by purposive sampling. The standard Hg calibration curve produces a linear line with the equation y = 0.0874x + 0.0729, and the correlation coefficient (R2) value of 0.9726. LOD value is 0.004854 ppb, and LOQ is 0.01681 ppb. The positive results were obtained from samples code TB3= 0.046, TB6= 0.01, and TB13= 0.004 ppb respectively. These results indicated the mercury level was still lower than 1 mg/L the threshold by drug and food control centers (BPOM).

Development of Arduino Uno-Based TCS3200 Color Sensor and Its Application on the Determination of Rhodamine B Level in Syrup Muhammad Syukri Surbakti; Muhammad Farhan; Zakaria Zakaria; Muhammad Isa; Elly Sufriadi; Sagir Alva; Elin Yusibani; Leni Heliawati; Muhammad Iqhrammullah; Khairi Suhud
Indonesian Journal of Chemistry Vol 22, No 3 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.69214

The use of the notorious synthetic dye, rhodamine B, in food and beverage products has been widely reported. This application urges the need to develop an analytical method that can provide reliable rhodamine B data with an easy operational technique. Therefore, this research is aimed to develop an Arduino Uno-based TCS3200 color sensor and study its application to determine rhodamine B levels in syrup. The design of the analytical instrument included TCS3200, an Arduino Uno microcomputer, an Integrated Development Environment (IDE) software, a black box container, and a 24 × 2 matrix display screen, where samples were prepared via absorption using wool thread. With a linear range of 1–20 mg/L, our proposed colorimetric sensor had recoveries of 96.25–110.3%, which was better compared to that was obtained from the UV-vis (81.8–100.6%) method. The detection and quantification limits of the sensor were 2.766 and 8.383 mg/L, respectively. The syrup samples used in this study were purchased from the local stores in Banda Aceh. Based on the proposed TCS3200 color sensor, the highest rhodamine B concentration from the syrup sample was 16.74 mg/L. The t-test analysis in this study revealed that the Rhodamine B levels quantified using the newly developed TCS3200 color sensor were not statistically or significantly different from the UV-Vis spectrophotometer method.

Distribution pattern of Pb and Zn contamination in rivers near industrial zone in Aceh, Indonesia, revealed by principal component analysis (PCA) Lelifajri Lelifajri; Rahmadi Rahmadi; Rinaldi Idroes; Supriatno Supriatno; Eka Safitri; Nazaruddin Nazaruddin; Ilham Maulana; Khairi Suhud
Jurnal Rekayasa Kimia & Lingkungan Vol 17, No 1 (2022): Jurnal Rekayasa Kimia dan Lingkungan (January-June, 2022)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

The research aims to evaluate the pollution of Pb and Zn in water, sediment, and Faunus ater samples collected from Krueng Balee (KB) and Kreung Reuleung (KR) Rivers, Aceh, Indonesia. The samples were collected at the upstream, midstream, and downstream of each river and analyzed using Atomic Absorption Spectrophotometry (AAS). The distribution of Pb and Zn pollution was analyzed using Principal Component Analysis (PCA). Our investigation revealed that the presence of Pb and Zn is still safe for water and sediment samples. Nevertheless, Pb and Zn contamination found in F. ater samples had exceeded the national safety limit for food. PCA analysis revealed correlations between samples suggesting the roles of physical and chemical properties of the river in the pollutant retainment. The analysis also indicated the possible antagonism between Pb and Zn accumulation in F. ater which has never been reported previously. We suggest routine monitoring of Pb and Zn concentrations. The role of the surrounding industry in the Pb and Zn pollution should be further studied.

Optical pH sensor based on polyelectrolyte complex (PEC) pectin-chitosan/methanol anthocyanin extract of Catharanthus roseus for a new optical urea biosensor development NURHAYATI NURHAYATI; EKA SAFITRI; KHAIRI SUHUD; NAZARUDDIN NAZARUDDIN; BINAWATI GINTING; SUSILAWATI SUSILAWATI; SITTI SALEHA; MURNIANA MURNIANA; SALSABILLA LATANSA NAZARUDDIN
Jurnal Natural Volume 21 Number 3, October 2021
Publisher : Universitas Syiah Kuala

Construction of optical pH sensor as a new platform optical urea biosensor based on polyelectrolyte complex (PEC) pectin-chitosan membrane and total phenolic (anthocyanin) of Tapak Dara flower (Catharanthus roseus) has been successfully carried out. The anthocyanin was extracted by a maceration method for 72 hours using methanol, and a total extract yield was 21.56% or 1.803 mg/L. Flavonoid and phenol tests showed positive results indicated by the formation of red and black colours. The anthocyanins showed maximum absorption at 578 nm for phosphate buffer and 575 nm for tris HCl buffer solution. The sensor fabrication was performed using a mixture of pectin and chitosan solutions with a ratio of 3:7. The anthocyanin was mixed into the solution with various concentrations. The sensor has an optimum sensitivity at the anthocyanin concentration of 0.05 mg/L (phosphate buffer) in the pH range of 7.0-9.5 and 0.025 mg/L (Tris HCl buffer) with a narrower pH range of 6.0-7.5. This sensor produced higher sensitivity, a wider linear range, and good linearity when it was exposed in 0.03M PBS. Reproducibility test with a relative standard deviation percentage (% RSD) was 9.20. The sensor showed a stable response after 5 minutes exposed to PBS solution, and it can be used to measure pH within the 20th day. The optimized optical pH sensor has been successfully developed as a urea optical biosensor by immobilizing urease on its surface. The biosensor showed a linear response in a series of 10-1-10-10 M urea concentrations and has good linearity.

Realtime instrumentation system towards blood oxygen saturation level monitoring with Liquid Crystal Display (LCD) and smartphone Zakaria Husen; Zaid Albarra; Khairi Suhud; Fauzi Fauzi; Elin Yusibani; Irhamni Irhamni; Fadhli Syamsuddin; Edwar Iswardy; Nurhanif Nurhanif; Ahmad Fairuz Bin Omar; Muhammad Syukri Surbakti
Journal of Aceh Physics Society Volume 12, Number 2, April 2023
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v12i2.31131

Abstrak. Oksigen memainkan peranan vital dalam tubuh untuk mengatur sistem peredaran darah. Namun jika kadar saturasi oksigen dalam darah (SpO2) berkurang atau tidak mencukupi maka dapat menyebabkan sesak nafas, bahkan dapat mempengaruhi fungsi kerja otak. Perangkat oksimeter digunakan untuk mengukur kadar saturasi oksigen dalam darah dengan pengukuran secara non-invasif, sehingga kekurangan oksigen dalam darah dapat dideteksi lebih awal. Oksimeter yang tersedia saat ini umumnya menampilkan hasil SpO2 tidak terhubung ke jaringan sehingga tidak dapat dipantau secara jarak jauh. Oleh karena itu diperlukan suatu perangkat yang dilengkapi dengan fitur monitoring dalam jaringan agar dapat memantau kondisi partisipan secara real-time. Penelitian ini bertujuan untuk mengembangkan sistem monitoring pengukuran saturasi oksigen dalam darah yang dapat diakses secara remote menggunakan smartphone. Alat rancangan ini menggunakan sensor MAX30100 dan NodeMCU ESP8266 sebagai mikrokontroler. Hasil pengukuran alat rancangan dapat dipantau secara real-time melalui website menggunakan aplikasi Blynk. Data pembanding yang digunakan adalah alat Oksimeter komersial. Pengujian telah dilakukan pada partisipan laki-laki berusia 14 dan 22 tahun, dan perempuan berusia 18 dan 45 tahun. Hasil pengujian secara keseluruhan menunjukkan bahwa alat yang dirancang relative sama dengan oksimeter komersial, yang ditunjukkan oleh nilai thitung ttabel. Abstract. Oxygen plays a vital role in regulating our blood circulation system. However, if the oxygen levels in the blood decrease or are insufficient, it can cause shortness of breath and even affect brain function. To address this problem, an oximeter provides an effective solution by providing a device that can measure blood oxygen saturation without having to place any device inside the body. Currently available oximeter devices usually only display the SpO2 results on the device itself. Therefore, a device with a remote monitoring feature is needed to monitor participants’ condition in real-time. This research aims to develop a remote-access blood oxygen saturation measurement monitoring system using the MAX30100 sensor and the NodeMCU ESP8266 as the microcontroller, the values can be viewed in real-time on website by the Blynk app. The comparison data used is a comercial oximeter device. The participants were the males aged 14 and 22 years, and the female aged 18 and 45 years. Herein, we found that the designed instrument shows excellent performance in which ttest ttable from overall data.

Analysis of Lead (Pb) and Cadmium (Cd) in Oyster Crassostrea gigas and Saccostrea cucullata using Atomic Absorption and Ultraviolet-Visible Spectrophotometer Methods Lelifajri Lelifajri; Salsabila Salsabila; Khairi Suhud
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 2 (2023): June 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i2.55

Lead (Pb) and Cadmium (Cd) metals are highly toxic when accumulated in the body and cause serious diseases and even death. This study aimed to determine the metal content of Pb and Cd in the oyster species Crassostrea gigas and Saccostrea cucullate in the Lampulo and Krueng Cut areas at three different places. Analysis of the metals was carried out using AAS and UV-Visible spectrophotometers. Samples were prepared using concentrated HNO3 wet destruction and the addition of dithizone. The results showed Pb measured by AAS in Saccostrea cucullata 2.33-8.00 ppb, and by UV-Vis 2.77-8.66 ppb. Pb within Crassostrea gigas by AAS method 1.77-10.30 ppb, and by UV-Vis method 2.11-10.66 ppb. The Cd metal measured by AAS in Saccostrea cucullate is 3.80-10.50 ppb, and by UV-Vis method is 4.29-10.77 ppb, whereas Cd in Crassostrea gigas measured by AAS is 12.11-13.22 ppb and by UV-Vis method is 12.77-13.66 ppb. Linearity of Pb measurements with AAS and UV-Vis was obtained R2 =0.9979 and R2 =0.9938 and for Cd were R2 =0.9986 and R2 =0.9810. Accuracy (%recorvery) of Pb measurements by AAS and UV-Vis are 80-110% and 98-113% whereas Cd showed 100-106% and 91-107% respectively. The relative value of the standard deviation (%RSD ± SD) is 0.001 indicating excellent measurement results. Based on t-test calculations, measurements of Pb and Cd levels showed no difference between the AAS method and the UV-Vis method

Optical pH sensor based on polyelectrolyte complex (PEC) pectin-chitosan/methanol anthocyanin extract of Catharanthus roseus for a new optical urea biosensor development NURHAYATI NURHAYATI; EKA SAFITRI; KHAIRI SUHUD; NAZARUDDIN NAZARUDDIN; BINAWATI GINTING; SUSILAWATI SUSILAWATI; SITTI SALEHA; MURNIANA MURNIANA; SALSABILLA LATANSA NAZARUDDIN
Jurnal Natural Volume 21 Number 3, October 2021
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v21i3.22851

Construction of optical pH sensor as a new platform optical urea biosensor based on polyelectrolyte complex (PEC) pectin-chitosan membrane and total phenolic (anthocyanin) of Tapak Dara flower (Catharanthus roseus) has been successfully carried out. The anthocyanin was extracted by a maceration method for 72 hours using methanol, and a total extract yield was 21.56% or 1.803 mg/L. Flavonoid and phenol tests showed positive results indicated by the formation of red and black colours. The anthocyanins showed maximum absorption at 578 nm for phosphate buffer and 575 nm for tris HCl buffer solution. The sensor fabrication was performed using a mixture of pectin and chitosan solutions with a ratio of 3:7. The anthocyanin was mixed into the solution with various concentrations. The sensor has an optimum sensitivity at the anthocyanin concentration of 0.05 mg/L (phosphate buffer) in the pH range of 7.0-9.5 and 0.025 mg/L (Tris HCl buffer) with a narrower pH range of 6.0-7.5. This sensor produced higher sensitivity, a wider linear range, and good linearity when it was exposed in 0.03M PBS. Reproducibility test with a relative standard deviation percentage (% RSD) was 9.20. The sensor showed a stable response after 5 minutes exposed to PBS solution, and it can be used to measure pH within the 20th day. The optimized optical pH sensor has been successfully developed as a urea optical biosensor by immobilizing urease on its surface. The biosensor showed a linear response in a series of 10-1-10-10 M urea concentrations and has good linearity.

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