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Budidaya Ikan Lele untuk Menunjang Kelancaran Biaya Operasional TPQ dan RTQ Raudhatul Adzkia Jorong Dalam Koto Kabupaten Agam Refilda Refilda; Rahmiana Zein; Yefrida Yefrida; Zilfa Zilfa; Upita Septiani; Syukri Syukri; Diana Vanda Wellia; Syafrizayanti Syafrizayanti; Matlal Fajri Alif; Elida Mardiah; Refinel Refinel; Admi Admi; Emil Salim; Fitratul Ilahi; Dwi Syukur Phameswari
Warta Pengabdian Andalas Vol 28 No 3 (2021)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.28.3.206-214.2021

The Qur'an Education Park (TPQ) and Tahzhul Qur'an House (RTQ) of the Raudhatul Adzkia Jorong Dalam Koto Nagari Koto Tangah, Tilatang Kamang, and District of Agam have been launched since 2015. The students who study here are free of charge. The operational costs of education and the honorarium for educators come from donations from their community and some nomads. However, this contribution is not sufficient for operational costs. The Department of Chemistry's community service team, Andalas University, collaborated with partners to start a business to solve this problem. The business was carried out using vacant land owned by partners for catfish cultivation. Surveys, program socialization and assisting activities were carried out online using virtual media, while Partners carried out the implementation in the field. Activities carried out were pond preparation, the release of catfish seeds, feeding, sorting, maintenance, harvesting, and marketing cultivated catfish. Based on the evaluation, 5000 seedlings from the released catfish developed well. About 99% of catfish typically growth to a large and even size, while the other 1% growth relatively slowly. Harvested catfish were sold for IDR 18,000/kg for wet fish and IDR 100,000/kg for dried fish. This business has been carried out sustainably by partners, and the profits have been used to support the operational costs of TPQ and RTQ Raudhatul Adzkia.

Pelatihan Praktikum Kimia Sederhana di SMAN 16 Padang Imelda Imelda; Refinel Refinel; Refilda Refilda; Yefrida Yefrida; Hermansyah Aziz; Yulizar Yusuf; Suryati Suryati; Zulkarnain Chaidir; Sumaryati Syukur; Rahmiana Zein; Novesar Jamarun; Safni Safni; Zilfa Zilfa; Yetria Rilda; Norman Ferdinal; Tommi Hermansyah; Fivi Mona Bareno
Warta Pengabdian Andalas Vol 30 No 3 (2023)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.30.3.562-568.2023

Chemistry is one of the subjects taught in State Senior High Schools (SMAN), especially in Natural Sciences (IPA). The problem with chemistry subjects is that it is difficult to practice in the laboratory because laboratory facilities such as space, equipment and chemicals are expensive. As a result, chemical laboratory practices were only sometimes carried out. Several lecturers and students from the Department of Chemistry, FMIPA Unand Kimia Unand, carried out service activities at SMAN 16 Padang through laboratory practice using materials and equipment that were cheap and readily available in the surrounding environment. This community service aims to train teachers and students to carry out chemistry practicums using simple materials and equipment available around them. The training was given to chemistry subject teachers and students in the science laboratory at SMAN 16 on 17 and 21 November 2022. The material was practised in oxidation and reduction (redox) and electrolysis reactions. The activity went smoothly; the students enthusiastically carried out the practicum. Through the results of this simple chemistry practicum, students can design and carry out chemical experiments using simple tools and materials, conduct direct observations of chemical processes, practice scientific thinking, attitude and work skills and analyze and solve various scientific processes using scientific methods. SMAN 16 hopes that this activity will continue with different topics.

Training on Postharvest Guava Fruit Processing in KWT Jambu Biji, VII Koto Sungai Sariak, Pariaman Yefrida Yefrida; Refilda Refilda; Imelda Imelda; Refinel Refinel; Rahmiana Zein; Safni Safni; Admi Admi; Dheasy Gustira; Jihanul Khaira; Harza Dipajana Umardi
Warta Pengabdian Andalas Vol 31 No 3 (2024)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.31.3.510-517.2024

Red guava fruit is one type of fruit that quickly changes colour, texture and spoilage. This is of course a problem for farmers. At harvest time, not all of the fruit is marketable. So sometimes farmers just leave the fruit on the tree, because if harvested it will only increase operational costs. The KWT Jambu Biji Bengke Sakato, VII Koto Sungai Sariak, Pariaman is a group of red guava farmers. They tried to find a solution to this problem by discussing with TIM PPM KIMIA UNAND of the Department of Chemistry, FMIPA, Universitas Andalas. Finally it was agreed that the solution was to make products from red guava. The products made in this program are dodol and red guava ice cream. The KWT members and the Tim PPM KIMIA UNAND together made these two types of products. The results obtained, dodol and ice cream made are quite delicious and have an attractive appearance. This product can be an alternative to red guava processing that has economic value.

Diazo Red B Dye Removal by Electrocoagulation Method using Aluminum Electrode Emriadi, Emriadi; Refinel, Refinel; Khalishah, Salwa
Aceh International Journal of Science and Technology Vol 13, No 2 (2024): August 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.2.41243

The removal of diazo red B dye was studied in water using the electrocoagulation method with an aluminum electrode. The study aimed to reduce the presence of harmful diazo red B dyes in the environment and their impact on living organisms. This study was conducted by testing various parameters with specified values. The initial dye concentrations were set at 10, 20, 30, 40, and 50 mg/L, while the electrocoagulation times were varied at 30, 60, 90, 120, 150, and 180 minutes. The initial pH levels were adjusted to 5, 6, 7, and 8. The applied voltages were 2.5, 5, 7.5, 12.5 V, and the distances between electrodes varied at 1, 1.25, 1.5, 1.75, and 2 cm. The study also examined the effects of initial dye concentration on electrocoagulation time, its interaction with pH, and the influence of pH on electrocoagulation time. These parameters aim to determine the optimum conditions for diazo red B removal, as measured by a UV-Vis spectrophotometer at a wavelength of 420 nm. The optimum removal efficiency of diazo red B was achieved with 94.32% for an initial dye concentration of 30 mg/L, 94.13% for an electrocoagulation time of 180 minutes, 96.00% at a pH of 6, 95.32% for a voltage of 7.5 V, and 95,75% for an electrode distance of 1.5 cm. Additionally, the efficiencies were 99.5% for concentration relative to time was 99.5%, for concentration relative to pH was 97.85%, and for pH relative to time was 96.00%. Additionally, the coagulant analysis of the electrocoagulation results was carried out using FTIR and morphological analysis of the surface of the damaged aluminum anode using an optical microscope.

Analisis Dosis efektif cemaran 210Po pada Krustasea dan Moluska di Lamongan dan Sukabumi Hombing, Angelina Br; Deswita, Elvira; Makmur, Murdahayu; Istanto, Istanto; Putra, Deddy Irawan Permana; Prihatiningsih, Wahyu Retno; Refinel, Refinel; Priasetyono, Yogi
Jurnal Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 19, No 2 (2024): Desember 2024
Publisher : Politeknik - Ahli Usaha Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/jpbkp.v19i2.1005

Penelitian ini menghitung 210Po pada beberapa spesies filum krustasea dan filum moluska secara purposive sampling di Lamongan dan Sukabumi. Aktivitas 210Po dari tujuh sampel yaitu 3 sampel krustasea asal Sukabumi dan 4 sampel moluska asal Lamongan di analisis menggunakan Spektrometer Alfa energi 5,305 MeV selama 48 jam. Dari hasil analisis, didapatkan aktivitas 210Po tertinggi pada Krustasea sekitar pada Udang kipas (23,28±3,33 Bq/Kg) dan terendah pada rajungan Rajungan (1,46 ± 0,34 Bq/Kg). Aktivitas 210Po tertinggi pada Moluska terdapat pada Cumi-cumi (25,71±3,66 Bq/Kg) dan terendah yaitu Kerang hijau (6,00±1,00 Bq/Kg). Dosis efektif tahunan tertinggi dari Lamongan pada bayi dengan konsumsi udang kipas (34,22 μSv/tahun), pada anak-anak (10,11 μSv/tahun) dan dewasa (4,67 μSv/tahun). Dosis efektif tahunan tertinggi dari Sukabumi pada bayi dengan konsumsi cumi-cumi (19,27 μSv/tahun), pada anak-anak (5,69 μSv/tahun) dan dewasa (2,63 μSv/tahun). Dosis efektif tahunan ini jauh lebih rendah dari kisaran dosis yang ditetapkan The United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR), menandakan bahwa Indonesia aman dari unsur radioaktif 210Po. Dosis konsumsi efektif tahunan sangat bergantung pada asupan makanan laut tahunan melalui makanan ditambah dengan kebiasaan masyarakat yang selalu memasak sebelum mengkonsumsi makanan laut. Fakta ini harus dipertimbangkan ketika membandingkan dosis efektif tahunan antar wilayah atau negara serta dalam melakukan perhitungan cemaran 210Po pada beberapa spesies di filum krustasea dan moluska yang di distribusikan dan dikonsumsi.ABSTRACTThis study calculated 210Po in several species of crustacean and mollusc by purposive sampling in Lamongan and Sukabumi. The 210Po activity of seven samples, as filum 3 crustacean samples from Sukabumi and 4 mollusc samples from Lamongan, was analyzed using an alpha spectrometer with an energy of 5.305 MeV for 48 hours. The highest 210Po activity was found in Crustacea in Fan shrimp (23.28 ± 3.33 Bq/Kg) and the lowest in Crab Crab (1.46±0.34 Bq/Kg). The highest 210Po activity in Molluscs was found in Squid (25.71±3.66 Bq / Kg) and the lowest was in Green mussel (6.00±1.00 Bq/Kg). The highest annual effective dose from Lamongan in infants with fan shrimp consumption (34.22 μSv/year), in children (10.11 μSv/year) and adults (4.67 μSv/year). The highest annual effective dose from Sukabumi in infants with squid consumption (19.27 μSvyear), in children (5.69 μSv/year) and adults (2.63 μSv/year). This annual effective dose is much lower than the dose range set by The United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR), indicating that Indonesia is safe from the radioactive element 210Po. The annual effective consumption dose depends on seafood intake through food plus the community’s habit of always cooking before consuming seafood. This fact must be considered when comparing the annual effective dose between regions or countries and in calculating 210Po contamination in several species of crustaceans and molluscs that are distributed and consumed.

Training on Postharvest Guava Fruit Processing in KWT Jambu Biji, VII Koto Sungai Sariak, Pariaman Yefrida Yefrida; Refilda Refilda; Imelda Imelda; Refinel Refinel; Rahmiana Zein; Safni Safni; Admi Admi; Dheasy Gustira; Jihanul Khaira; Harza Dipajana Umardi
Warta Pengabdian Andalas Vol 31 No 3 (2024)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.31.3.510-517.2024

Red guava fruit is one type of fruit that quickly changes colour, texture and spoilage. This is of course a problem for farmers. At harvest time, not all of the fruit is marketable. So sometimes farmers just leave the fruit on the tree, because if harvested it will only increase operational costs. The KWT Jambu Biji Bengke Sakato, VII Koto Sungai Sariak, Pariaman is a group of red guava farmers. They tried to find a solution to this problem by discussing with TIM PPM KIMIA UNAND of the Department of Chemistry, FMIPA, Universitas Andalas. Finally it was agreed that the solution was to make products from red guava. The products made in this program are dodol and red guava ice cream. The KWT members and the Tim PPM KIMIA UNAND together made these two types of products. The results obtained, dodol and ice cream made are quite delicious and have an attractive appearance. This product can be an alternative to red guava processing that has economic value.

Transpor Ion Logam Cu(II) Menggunakan Minyak Kelapa (Cocos nucifera L.) Sebagai Membran Cair Melalui Teknik Membran Cair Fasa Ruah Refinel; Olly Norita, Tetra; Shofiyah , Anwar
Jurnal Kimia Unand Vol. 13 No. 2 (2024): November 2024
Publisher : Departemen Kimia Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jku.13.2.1-7.2024

Increasing industrial activities throughout the world produce a large amount of waste, including materials that contain heavy metal ions. One of the heavy metals found in industrial waste is copper ion Cu(II). Liquid membrane technology using vegetable oil as the membrane phase can be an environmentally friendly alternative metal transportation process. Transport of Cu(II) ions was carried out using bulk li-quid membrane technology using coconut oil as the phase membrane. According to the Minister of Health Regulation No. 492/menkes/per/IV/2010 concerning Drinking Water Quality Requirements, the threshold limit of Cu(II) ions in waters is 2 mg/L. Many ways have been done to separate heavy metal ions from this industrial waste. In this study, the transport of Cu(II) ions through coconut oil membrane and as the receiving phase of ethylenediaminetetraacetic (EDTA) has been carried out. The optimization results obtained, namely the source phase of Cu(II) metal ions pH 4 with a concentration of 3.147 x 10-4 M, the receiving phase of EDTA solution pH 7 with a concentration of 0.06 M, 200 rpm stirring speed, obtained the transport of Cu(II) metal ions to the receiving phase, namely, 23.44% with a transport time of 1 hour. Furthermore, the test was carried out with the same optimum conditions using HCl as the receiving phase, and the percentage value of Cu(II) metal ions in the receiving phase was 25%, from using the EDTA receiving phase.

Transpor Cd(II) Menggunakan Membran Cair Minyak Jagung Dengan Teknik Membran Cair Fasa Ruah Refinel; Olly Norita Tetra; Mega Silvia
Jurnal Kimia Unand Vol. 12 No. 1 (2023): May 2023
Publisher : Departemen Kimia Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jku.12.1.14-18.2023

The transport of Cd(II) has been carried out by means of a bulk phase liquid membrane technique with vegetable oil as an environmentally friendly membrane phase. The transport process consisted of 65 mL of Cd(II) solution as the source phase, 50 mL of corn oil as the membrane phase and 120 mL of EDTA solution as the receiving phase. The experimental technique used a magnetic stirrer at a speed of 200 rpm with an equilibrium time of 15 minutes. The concentration of Cd(II) transported to the source and receiving phase was determined by Atomic Absorption Spectroscopy(AAS) at a wavelength of 228.63 nm. It was found that the optimum conditions for Cd(II) transport were at a concentration of 2.8 ppm with pH 6 as the source phase, EDTA concentration of 0.05 M with pH 4 as the receiving phase, stirring speed of 200 rpm, transport time of 120 minutes and equilibrium time of 15 minutes, the amount of Cd(II) transported to the receiving phase reached 19.37% while the remaining in the source phase was 38.54%.

Optimalisasi Proses Transportasi Anilin Menggunakan Membran Minyak Nabati dalam Teknik Membran Cair Refinel; Emil Salim; Ikhsan Gusti Rilma
Jurnal Kimia Unand Vol. 12 No. 2 (2023): November 2023
Publisher : Departemen Kimia Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jku.12.2.13-18.2023

Aniline transport using a supported liquid membrane technique has been carried out in the separation of aniline from aqueous solutions. The aniline transport process used vegetable oil as a liquid membrane and ceramics as a support material. The concentration aniline was determined using an UltraViolet-Visible (UV-Vis) Spectrophotometer at a wavelength of 230 nm. Optimal conditions found that a good type of liquid membrane was olive oil, a pH value of 3 in the source phase, the concentration of aniline 12 x 10-5 M, the concentration of HCl 1.0 M, and a stirring time of 90 minutes. Under optimum conditions, the percentage of aniline in the receiving phase was 36.19% and source phase was 1.48%. HCl is not able to attract all the molecules that are in the membrane phase. The receiving compound which has a strong affinity will provide a large amount of transport for the aniline transport process.

Efek Temperatur dan Waktu Terhadap Total Kandungan Antioksida Dari 5 Jenis Tanaman Herbal dengan Metode Phenanthroline Termodifikasi Arman, Etriyanto; Yefrida, Y.; Refinel, R.
Jurnal Kimia Unand Vol. 12 No. 2 (2023): November 2023
Publisher : Departemen Kimia Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jku.12.2.27-32.2023

This research determines the effect of temperature, maceration time, extract storage time at room temperature and refrigerator temperature of the total antioxidant content in miana leaves (Plectranthus scutellarioides (L.)R. Br), papaya leaves (Carica papaya), rambutan leaves (Nephelium lappaceum), bay leaves (Eugenia polyantha) and green betel leaves (Piper betel L). The determination of total antioxidant content was carried out by modified phenanthroline method. Based on the research data. It was found that the optimum conditions for total antioxidant content in the samples above were at 100oC with 60 minutes of maceration time and without storage time of the extracted samples before being analyzed. The total antioxidant content of miana leaves, papaya leaves, rambutan leaves, bay leaves, and green betel leaves analyzed in the optimum conditions are 3.0865; 1.1554; 0.4641; 0.6764; and 3.3630 mmol Fe/g DW, respectively.

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