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All Journal Jurnal Periodic Jurusan Kimia UNP Jurnal Riset Kimia Journal of Natural Sciences and Mathematics Research JURNAL PENDIDIKAN TAMBUSAI Indonesian Journal of Chemical Analysis (IJCA) Pelita Eksakta Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat SPIN: Jurnal Kimia & Pendidikan Kimia Jurnal Pijar MIPA MASALIQ: Jurnal Pendidikan dan Sains Jurnal Pengabdian Pada Masyarakat
Romy Dwipa Yamesa Away
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Universitas Negeri Padang
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Veterinary Other

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Ekstraksi dan Karakterisasi Pektin dari Limbah Kulit Pisang Ambon (Musa paradisiaca var. sapientum L.) Tasya, Sindi Idriana; Away, Romy Dwipa Yamesa
MASALIQ Vol 5 No 4 (2025): JULI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i4.6588

Abstract

The underutilization of banana peels, which are often regarded as agricultural waste, serves as the basis for this study, given their actual potential as a natural biopolymer source rich in cellulose, hemicellulose, pectin, lignin, and protein. This research aims to explore the potential use of banana peel waste as a raw material for pectin production, with the dual objective of mitigating environmental problems and promoting the development of value-added materials. The method employed involved pectin extraction from banana peel powder using hydrochloric acid (HCl). The results indicated that the extracted pectin constituted 3.96% of the banana peel powder by weight and demonstrated gelling ability. The extracted pectin had an equivalent weight of 4166.66 mg, a methoxyl content of 6.94% classified as low methoxyl pectin (LMP), a degree of esterification of 90.26%, categorizing it as high ester pectin, and a galacturonic acid content of 43.65%. According to the quality parameters established by the International Pectin Producers Association (IPPA), the extracted pectin was of reasonably high purity. These findings suggest that banana peels have significant potential as an environmentally friendly and industrially applicable alternative source of pectin.
Pemanfaatan Limbah Cangkang Kerang Darah sebagai Adsorben untuk Adsorpsi Zat Warna Methyl Orange Aprilianti, Cindy; Away, Romy Dwipa Yamesa
MASALIQ Vol 5 No 4 (2025): JULI
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i4.6784

Abstract

Methyl orange is a toxic, carcinogenic, and mutagenic dye commonly found in textile industry wastewater, posing a serious threat to the environment. This study aims to determine the optimal conditions for the adsorption of methyl orange using a natural adsorbent derived from blood clam (Anadara granosa) shell waste, which remains underutilized despite being abundant and rich in calcium oxide (CaO). The methodology consisted of three main stages: adsorbent preparation, adsorption process, and concentration analysis using UV-Vis spectrophotometry. The variables investigated included adsorbent mass (7, 9, 11, and 13 grams), contact time (20, 40, 60, and 100 minutes), and solution pH (1, 3, 5, and 7). In addition, CaO content was analyzed using X-Ray Fluorescence (XRF) after the calcination process. The results indicated that the optimal adsorption condition was achieved with 11 grams of adsorbent, 60 minutes of contact time, and a solution pH of 1, resulting in an adsorption efficiency of 85.35%. XRF analysis revealed that the blood clam shell contained 97.704% CaO, which significantly contributed to its adsorption performance. These findings demonstrate that blood clam shell waste has strong potential as a low-cost, efficient, and environmentally friendly alternative adsorbent for treating textile dye wastewater.
Pemanfaatan Limbah Kulit Buah Nanas dan Jeruk untuk Produksi Eco Enzyme: Uji Fosfor, Kalium, pH, dan TDS Putri, Molsa Vitaloka; Kurniawati, Desy; Away, Romy Dwipa Yamesa
MASALIQ Vol 5 No 6 (2025): NOVEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i6.7562

Abstract

The limited research on the use of pineapple and orange peel waste as base materials for eco enzyme production forms the background of this study, despite their high potential as environmentally friendly solutions for organic waste management. This study aims to analyze the characteristics of eco enzyme produced from the fermentation of pineapple and orange peel waste, through phosphorus and potassium tests, as well as measurements of pH and Total Dissolved Solids (TDS). The method employed combines a qualitative approach for phosphorus and potassium testing with a quantitative approach for pH and TDS measurements, using samples from various fruit peel fermentation treatments. The results showed that the resulting eco enzyme had a yellowish-brown, slightly turbid appearance, with relatively high TDS values due to dissolved solid content. The pH values ranged from 3.5 to 4, indicating acidity influenced by organic acids formed during fermentation. Content analysis showed positive results for phosphorus and potassium, supporting its potential use as a liquid organic fertilizer, along with the presence of flavonoids that support its application as a household cleaner or natural disinfectant. The study concludes that pineapple and orange peel waste is an effective and sustainable raw material for eco enzyme production, offering both economic and ecological benefits in household organic waste management.
Batu Kapur sebagai Prekursor Hidroksiapatit: Tinjauan Metode Sintesis, Tantangan, dan Prospeknya Barkah, Nisa’atin; Away, Romy Dwipa Yamesa
MASALIQ Vol 5 No 6 (2025): NOVEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v5i6.7604

Abstract

Hydroxyapatite (HAp) is a calcium phosphate biomaterial with high biocompatibility, widely utilized in biomedical, cosmetic, and photocatalytic applications. The high production cost of synthetic HAp has driven the search for abundant and environmentally friendly natural alternatives, such as limestone (CaCO₃), as a potential precursor. This article aims to review various limestone-based HAp synthesis methods, including wet precipitation, sol-gel, hydrothermal, and sintering techniques, and to evaluate the influence of process parameters on the Ca/P ratio, phase purity, and crystal morphology. The review is conducted through an analysis of recent literature comparing the performance of each method. Findings indicate that limestone with CaCO₃ content exceeding 95% can produce HAp with a Ca/P ratio approaching the stoichiometric value of 1.67; however, the presence of natural impurities such as Si, Al, Mg, and Fe may lead to the formation of secondary phases, such as β-tricalcium phosphate (β-TCP). Optimization of process parameters, including calcination temperature, pH, and reaction time, is shown to be crucial for enhancing crystallinity and approximating the structure of natural bone. Furthermore, green synthesis approaches employing bio-extracts such as gelatin or leaf extracts contribute to improved homogeneity and particle size control. This review concludes that limestone is an economical and sustainable local source for HAp production, with significant potential for the development of biomimetic materials based on Indonesian natural minerals that are efficient and globally competitive.
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

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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.
Processing Trash Fish into Economically Valuable Animal Feed in Nagari Pilubang, Padang Pariaman Regency Sari, Trisna Kumala; Away, Romy Dwipa Yamesa; Suryani, Okta; Yeni, Isra; Aini, Syamsi; Kurniawati, Desy; Nasra, Edi; Stiadi, Della Rosalynna
Pelita Eksakta Vol 7 No 1 (2024): Pelita Eksakta, Vol. 7, No. 1
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol7-iss1/221

Abstract

There has been concealed on the processing of trash fish into animal feed in Nagari Pilubang, Padang Pariaman Regency. The majority of the Pilubang community are fishermen. However, so far the trash fish caught have not been processed properly. Meanwhile, trash fish has the potential to be used as animal feed because it contains high protein. Through this PKM activity, the community receives education and training regarding the application of technology for processing trash fish into animal feed using appropriate technology. The animal feed was made from trash fish is processed using a fermentation process. From the results of this activity, it is known that community knowledge has increased and is very useful for implementation by the community in Nagari Pilubang
Utilization of Nephelium lappaceum (Rambutan) waste as biosorbent for heavy metals and dyes: a review Rahmadani, Suci; Putra, Rizky Zalmi; Sari, Trisna Kumala; Away, Romy Dwipa Yamesa
Journal of Natural Sciences and Mathematics Research Vol. 9 No. 2 (2023): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

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Abstract

Pollution of environmental streams and ecosystems is rising. One of the sources of water contamination is the wastewater from the textile, plastics, and mining sectors, which contains both organic and inorganic pollutants. Heavy metals and dyes in wastewater must be treated before disposal to protect the aquatic environment and human health. Due to its effectiveness, low cost, and simplicity of use, biosorption has emerged as a wastewater treatment option. Rambutan waste, in particular, is promising for commercial usage due to its extensive availability and efficiency. In this article, we review the usage of natural rambutan peels, seeds, leaves, and stems for the biosorption of water contaminants. We discuss the factors that influence pollutant removal. A pH of 6 to 12 is advantageous for cationic pollutant removal, whereas a pH of less than 5 is appropriate for anionic pollutant removal. More significant concentrations of pollutants generally result in lesser removal, whereas higher doses of biosorbent result in higher removal. The ideal adsorption contact time for rambutan peels and seeds was less than an hour. We also discuss the isotherms of the adsorption process.
Perancangan Mesin Pengolahan Air Tanah Menjadi Air Bersih di Nagari Koto Tinggi Kabupaten Agam Randi Purnama Putra; Fadhilah Fadhilah; Romy Dwipa Yamesa Away
ABDI: Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol 7 No 3 (2025): Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat
Publisher : Labor Jurusan Sosiologi, Fakultas Ilmu Sosial, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/abdi.v7i3.1415

Abstract

Pengabdian masyarakat ini bertujuan merancang dan membuat mesin pengolahan air tanah menjadi air bersih yang layak pakai di Nagari Koto Tinggi, Kecamatan Baso, Kabupaten Agam. Berdasarkan observasi, masyarakat setempat bergantung pada air tanah yang tidak layak pakai. Tim merancang mesin pengolahan air dengan kapasitas 120 liter per 10 menit, menggunakan sistem filtrasi yang melibatkan media seperti mangan, pasir silika dan karbon aktif untuk memastikan kualitas air yang aman serta layak pakai. Proses perancangan melibatkan partisipasi masyarakat, yang tidak hanya meningkatkan rasa kepemilikan, tetapi juga memberikan pemahaman tentang teknologi pengolahan air. Setelah pembuatan mesin selesai, dilakukan uji coba dan sosialisasi kepada masyarakat, serta serah terima mesin kepada mitra untuk pengelolaan lebih lanjut. Proyek ini memberikan dampak positif, meningkatkan akses masyarakat terhadap air bersih dan kesadaran akan pentingnya kualitas air untuk kehidupan sehari-hari.
Co-Authors Aini, Syamsi Alizar, Alizar Aprilianti, Cindy Ayu Azizah Baehaqi Barkah, Nisa’atin Boni Saputra Budhi Oktavia Della Rosalynna Stiadi Desy Kurniawati Desy Kurniawati Desy Kurniawati DESY KURNIAWATI Dwi Finna Syolendra Edi Nasra Elinda Fithriana Elinda Fithriana Fadhilah Fadhilah Fatmawati, Rani Fitri, Bali Yana Hidayanti, Ermia Indang Dewata Indang Dewata Isra Yeni Jannah, Mizatul Kumala Sari, Trisna Luthfiyah, Lulu Maharani, Indah Kemala Marlini, Rahmida Mulia, Melindra Putra, Randi Purnama Putra, Rizky Zalmi PUTRI WULANDARI Putri, Molsa Vitaloka Riga Riga Riga, Riga Safitri, Nadila Sari, Trisna Kumala Sherly Kasuma Warda Ningsih Suryani, Okta Syamsi Aini Syamsi Aini Tasya, Sindi Idriana Trisna Kumala Sari Wahyu Hidayati Yeni, Isra Yeni, Isra