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All Journal Jurnal Periodic Jurusan Kimia UNP Jurnal Riset Kimia JURNAL PENDIDIKAN TAMBUSAI Indonesian Journal of Chemical Analysis (IJCA) Pelita Eksakta Jurnal Pijar MIPA Jurnal Pengabdian Pada Masyarakat
Romy Dwipa Yamesa Away
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Universitas Negeri Padang
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Penyuluhan Pembuatan Pupuk Bokashi dari Kotoran Ayam dan Abu Sekam di Nagari Mungka Trisna Kumala Sari; Riga Riga; Isra Yeni; Syamsi Aini; Desy Kurniawati; Romy Dwipa Yamesa Away; Melindra Mulia
Jurnal Pengabdian Pada Masyarakat Vol 7 No 4 (2022): Jurnal Pengabdian Pada Masyarakat
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (429.794 KB) | DOI: 10.30653/002.202274.205

Abstract

COUNSELING ON MAKING BOKASHI FERTILIZER FROM CHICKEN MANURE AND HUSK ASH IN NAGARI MUNGKA. Community activities in the field of livestock are growing in Nagari Mungka, especially raising chickens. However, the processing of chicken manure waste is not handled properly. This may be due to the lack of public knowledge about this waste processing technique. This counseling aims to improve the knowledge and skills of chicken farmers in making bokashi fertilizer from chicken feces in Nagari Mungka, Lima Puluh Kota District. Bokashi fertilizer is a type of organic fertilizer that uses decomposers in the manufacturing process. The basic ingredients for this bokashi fertilizer are chicken feces, husk ash, bran and EM4. The counseling activity includes presentation of material, demonstration and evaluation of activity. Chicken farmers receive the knowledge about the benefits of bokashi fertilizer, how to make it and how to market it if it has the potential to be sold. This activity has a great influence on chicken farmers because this activity is very useful and right on target. Chicken farmers look enthusiastic in participating in the activities. The result of this community service activity is the increased knowledge and skills of breeders in processing chicken manure into bokashi fertilizer and have the desire to try and apply it.
Pelatihan Pembuatan Pupuk Bokashi dan Pakan Lele dari Kotoran Burung Puyuh Kepada Peternak Nagari Mungka Trisna Kumala Sari; Riga Riga; Isra Yeni; Syamsi Aini; Desy Kurniawati; Romy Dwipa Yamesa Away; Melindra Mulia
Jurnal Pengabdian Pada Masyarakat Vol 8 No 2 (2023): Jurnal Pengabdian Pada Masyarakat
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30653/jppm.v8i2.410

Abstract

Belakangan ini usaha peternakan burung puyuh semakin berkembang di Nagari Mungka. Namun pengolahan kotoran burung puyuh dari aktivitas ini belum ditangani dengan baik. Hal ini disebabkan masih minimnya pengetahuan peternak tentang teknologi pengolahan limbah kotoran puyuh. Pelatihan ini bertujuan untuk meningkatkan pengetahuan peternak burung puyuh tentang pemanfaatan kotoran burung puyuh menjadi pupuk bokashi dan pakan lele, sehingga berpotensi untuk meningkatkan profit usaha peternak burung puyuh di masa mendatang. Metode pelaksanaan dilakukan dengan dua cara yaitu dengan memberikan teori dan demonstrasi pembuatan pupuk bokashi dan pakan lele dari kotoran burung puyuh. Edukasi yang diberikan berupa pengetahuan tentang dampak negatif dari kotoran burung puyuh dan manfaatnya jika diolah menjadi pupuk bokashi dan pakan lele, serta bagaimana strategi pemasarannya. Evaluasi dilakukan dengan mengisi kuesioner oleh peternak dan meninjau hasil pelatihan. Dari hasil kuesioner diketahui hampir 80-100% pengetahuan peternak meningkat setelah mengikuti pelatihan. Ini merupakan ilmu baru bagi peternak dan kegiatan ini sangat bermanfaat khususnya bagi peternak burung puyuh. Recently, the quail farming business has been growing in Nagari Mungka. However, the processing of quail feces of this activity has not been properly treated. This is due to the lack of knowledge of farmers about technology of this quail feces waste treatment. This training aims to increase the knowledge of quail farmers on the use of quail feces into bokashi fertilizer and catfish feed, so that it has the potential to increase their business profits in the future. The implementation method is carried out in two ways, namely by providing theory and demonstrating on making bokashi fertilizer and catfish feed from quail feces. The education provided is in the form of knowledge about the negative impact of quail feces and the benefits of quail feces if it is processed into bokashi fertilizer and catfish feed, as well as marketing strategies. Evaluation is carried out by filling out questionnaires by farmers and reviewing the results of the training. From the results of the questionnaire, it is known that almost 80-100% of the knowledge of farmers increase after participating in the training. This is new knowledge for farmers and this activity is very useful, especially for quail farmers.
Pengaruh Massa Biosorben Terhadap Penyerapan Ion Logam Cu(II) Oleh Ekstrak Pektin dari Kulit Buah Kedondong (Spondias dulcis) Elinda Fithriana; Trisna Kumala Sari; Indang Dewata; Desy Kurniawati; Romy Dwipa Yamesa Away
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.118466

Abstract

Several industrial activities such as fertilizer industry, mining, battery, electronics and machinery can cause heavy metal pollution and one of them is Cu(II) heavy metal. At high levels of metal concentrations of Cu(II) will be very dangerous for the environment and living things, so it is necessary to find a solution to overcome the problem of metal pollution of Cu(II) is. One method that can be used is the biosorption method. In this study, pectin extract from kedondong fruit peel was used as a biosorbent. This research was conducted to determine the optimum mass of biosorbent in the biosorption process. Then the pectin characterization was carried out the Fourier Transform Infra Red instrument, then the absorbed Cu(II) metal content was determined using the Atomic Absorption Spectroscopy instrument. From this study, the optimum mass of biosorbent was 0.1 gram with an absorption capacity of 2,940 mg/g.
The Extracted Pectin from Ambarella Fruit Peel (Spondias dulcis) as Biosorbent in Adsorption of Cu(II) Metal Ions Trisna Kumala Sari; Elinda Fithriana; Indang Dewata; Desy Kurniawati; Romy Dwipa Yamesa Away
Jurnal Riset Kimia Vol. 14 No. 2 (2023): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v14i2.608

Abstract

Heavy metals are known to seriously injure land plants and animals, including humans, as well as marine species when present in contaminated water. For the batch adsorption technique used in this study, Cu(II) ions were removed from an aqueous solution using an inexpensive  environmentally friendly adsorbent prepared from the extracted pectin of ambarella fruit peel. The functional groups of the extracted pectin were studied using Fourier Transform Infrared Spectroscopy (FT-IR). Operational conditions like pH, contact time, and initial adsorbate concentration were investigated. FTIR characterization showed that pectin was successfully extracted from ambarella fruit peel with the appearance of the peaks at 3331.36 cm-1, 2924.02 cm-1, 1727.38 cm-1, 1626.20 cm-1, 1329.31cm−1, 1232.43cm−1, 994.18 cm−1 and these peaks have similar characteristic with a commercial pectin. The maximum uptake of Cu(II) ions was obtained at a pH of 4, a contact time of 90 min, an initial metal concentration of 150 ppm. The extracted pectin has an adsorption capacity of 6.5860 mg/g for the removal of Cu(II) ions from aqueous solution under the optimum adsorption conditions. In addition, the data obtained from contacting the extracted pectin of ambarella fruit peel in Batang Arau River water showed an adsorption capacity of 0.0376 mg/g. Therefore, the pectin that was extracted from the peel of the ambarella fruit could be used to filter out Cu(II) ions from aqueous solutions.
Deteksi Formaldehida Menggunakan Glassy Carbon Electrode (GCE) Modifikasi Lapisan Tipis Emas secara Voltametri Siklik Maharani, Indah Kemala; Sari, Trisna Kumala; Dewata, Indang; Warda Ningsih, Sherly Kasuma; Yamesa Away, Romy Dwipa
Periodic Vol 13, No 1 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i1.124526

Abstract

The formaldehyde was found as one of the toxic and mutagenic products. Long-term exposure will harm the health of the human body. This study aims to detect formaldehyde developed on an electrochemical sensor using Glassy Carbon Electrode (GCE) modified with a thin layer of gold as the working electrode by cyclic voltammetry. Electrode modification was carried out by electrodeposition of Au potential-sweeping on electrodes known as Au/GCE electrodes. The resulting electrode has high conductivity and excellent catalytic activity because it is able to provide a large peak current response. In this study, the optimum conditions will be determined based on variations in the electrodeposition cycles of gold thin films and variations in the supporting electrolyte. The optimum cycle of gold thin film electrodeposition was obtained, namely one cycle and 0.1 M KOH as the optimum supporting electrolyte. The peak current obtained is sharper, the sensitivity and stability are also better due to the electrocatalytic properties produced by the high gold thin layer.
Optimation of Adsorpsi and Desorpsi of Mn2+ Ions on Gel-GPTMS Silica (Glycidoxypropyltrimethoxysilane) Modified with Sulfonates Azizah, Ayu; Oktavia, Budhi; Dewata, Indang; Away, Romy Dwipa Yamesa
Jurnal Pijar Mipa Vol. 19 No. 5 (2024): September 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i5.7449

Abstract

Silica gel is an adsorbent often used in chromatography columns as a resin or stationary phase. Silica gel has active groups on its surface in the form of silanol (-SiOH) and siloxane (-Si-O-Si-). The effectiveness of silica gel in absorbing heavy metal ions is very low, so modification is needed to increase the absorption capacity of silica gel to metal ions. The addition of sulfonate with the GPTMS linkage compound dose modification. Adsorption and desorption are two methods that can be used to separate manganese metal. This research aims to obtain the optimum desorption agent (NaCl and CaCl2) and the concentration of the AAS-characterised desorption agent. This study used the column method for the adsorption and desorption process. This study used the column method for the adsorption and desorption process. The column method is a technique used to separate certain substances from a mixture by utilizing the interaction between adsorbent and adsorbate. The results obtained optimum desorption agent CaCl2 where the weight desorbed 0.1168002 mg with a percent desorption of 92.3%, the optimum concentration of CaCl2 0.05 M where the weight desorbed 0.132264 mg with a percent desorption of 95% Adsorbent characterization was conducted with FTIR and XRF.
Utilization of Corn Cob Waste into Briquettes as Renewable Fuel in Nagari Lingkuang Aua Bandarajo Syolendra, Dwi Finna; Riga, Riga; Away, Romy Dwipa Yamesa; Saputra, Boni; Mulia, Melindra; Fitri, Bali Yana; Hidayanti, Ermia
Pelita Eksakta Vol 7 No 2 (2024): Pelita Eksakta, Vol. 7, No. 2
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol7-iss2/248

Abstract

Pasaman District is the largest corn producer in West Sumatra Province, one of the villages is Lingkuang Aua Bandarajo, where the majority of the population work as corn farmers. This amount is directly proportional to the amount of corn cob waste produced from agricultural activities. Based on the results of observations and interviews with local communities, it is known that the processing of corn cob waste has not been carried out optimally, because people tend to burn the corn cobs, which has an impact on environmental pollution. One solution that can be provided is to hold training on processing corn cob waste into charcoal briquettes. This PKM activity was carried out offline with 3 sessions, namely a session presenting material regarding business opportunities and how to make corn cob briquettes, practice accompanied by a team and independent practice. Through this PKM activity, it is known that there has been an increase in knowledge about corn cob briquettes by the youth of the village of Aua Bandarajo. The corn cob briquettes produced can be a source of renewable fuel and can also improve the economy of local communities.
Development of Non-Enzymatic Glucose Sensor Using Ag-Au Bimetallic Modified Pencil Lead Electrode with Voltammetry Method Marlini, Rahmida; Kumala Sari, Trisna; Alizar, Alizar; Dwipa Yamesa Away, Romy
Indonesian Journal of Chemical Analysis (IJCA) Vol. 8 No. 1 (2025): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol8.iss1.art9

Abstract

Glucose is an essential monosaccharide that serves as the main source of energy in the human body. An imbalance in glucose levels in the body can lead to serious metabolic disorders, such as diabetes mellitus. Therefore, effective methods of analyzing and monitoring glucose levels are needed for early detection and more optimal disease management. In this study, a non-enzymatic glucose sensor based on Pencil Lead Electrode (PLE) modified with silver-gold (Ag-Au) bimetallic was developed through electrodeposition method using cyclic voltammetry. This modification aims to improve sensitivity and cost efficiency in glucose detection compared to enzymatic sensors, that are susceptible to denaturation and higher production costs. Electrodeposition is performed in a potential range of 1.6 V to -0.4 V to obtain an optimal bimetallic coating on the PLE surface. The Ag-Au/PLE electrode provided the best electrochemical response in detecting glucose, with oxidation and re-oxidation peaks at +0.01 V in 0.1 M KOH as a supporting electrolyte. The optimal condition was obtained in five electrodeposition cycles, with a correlation coefficient value of 0.9984 and a detection limit of 0.206 mM, indicating high sensitivity and accuracy. These results indicate that Ag-Au/PLE electrodes have great potential as reliable, sensitive and economical non-enzymatic glucose sensors.
Pemanfaatan Biosorben Cangkang Pensi sebagai Penyerap Logam Timbal (Pb) Safitri, Nadila; Dwipa Yamesa Away, Romy; Kumala Sari, Trisna
Jurnal Pendidikan Tambusai Vol. 8 No. 2 (2024)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pencemaran lingkungan merupakan masalah serius yang memerlukan solusi efektif dan ramah lingkungan dalam kehidupan manusia. Pencemaran ini biasanya disebabkan oleh adanya limbah dari industri pabrik. Salah satu limbah yang banyak ditemukan dan berbahaya bagi lingkungan adalah limbah logam timbal (Pb). Penelitian ini bertujuan untuk memanfaatkan cangkang pensi sebagai biosorben penyerap limbah logam Pb. Metode yang digunakan pada penelitian ini adalah adsorpsi sistem batch dengan melakukan beberapa variasi, yaitu variasi massa biosorben dan konsentrasi adsorbat. Hasil penelitian menunjukkan bahwa massa biosorben optimum sebesar 0,05 gram dengan nilai kapasitas penyerapan 15,8 mg/g dan konsentrasi adsorbat optimum 50 ppm dengan nilai kapasitas penyerapan 16,5 mg/g. Cangkang pensi memiliki potensial yang besar untuk menghilangkan limbah logam Pb di dalam larutan.
Co-Authors Alizar, Alizar Ayu Azizah Boni Saputra Budhi Oktavia Desy Kurniawati DESY KURNIAWATI Desy Kurniawati Dwi Finna Syolendra Elinda Fithriana Elinda Fithriana Fitri, Bali Yana Hidayanti, Ermia Indang Dewata Indang Dewata Isra Yeni Kumala Sari, Trisna Maharani, Indah Kemala Marlini, Rahmida Mulia, Melindra Riga Riga Riga, Riga Safitri, Nadila Sari, Trisna Kumala Sherly Kasuma Warda Ningsih Syamsi Aini Syamsi Aini Trisna Kumala Sari Yeni, Isra