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All Journal Semesta Teknika Jurnal Pengabdian UntukMu NegeRI Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Jurnal Teknik Industri Terintegrasi (JUTIN) Jurnal Surya Teknika Unri Conference Series: Community Engagement Jurnal Pengabdian Masyarakat Waradin Journal of Engineering Science and Technology Management Jurnal Pengabdian Kepada Masyarakat Meambo JES-TM Social and Community Service
Lisa Legawati
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Religion Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Artikel Review: Efektivitas Mikroorganisme untuk Pengomposan Tandan Kosong Sawit secara Berkelanjutan Legawati, Lisa; Maarasyid, Cici; Meldha, Zuqni; Liska, Salma; Yolanda, Yogi; Hendri, Yola Bertilsya; Ermal, Dini Aulia Sari; Elsa, Nesa Zafira
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 8 No. 3 (2025): July
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v8i3.47603

Abstract

Empty Fruit Bunches (EFB) of oil palm are the main solid waste generated by the palm oil industry, with an increasing volume and high lignocellulosic content that can affect the decomposition process. This article aims to review the effectiveness of various microorganisms as bioactivators in EFB composting based on experimental studies and recent literature. The review results indicate that using microbial consortia such as Trichoderma spp., cellulolytic bacteria, and local microorganisms (MOL) is more effective than single microorganisms in reducing the C/N ratio to levels approaching the compost quality standard (<20). Aerobic composting methods with proper aeration management and the addition of organic materials can also accelerate decomposition. Further research is recommended to examine the interactions among microorganisms within the consortia and to conduct application trials to validate the agronomic benefits of EFB compost sustainably. 
Pengembangan Katalis Water-Gas Shift: Perspektif dari Sistem Medium Temperature Shift (MTS) Liska, Salma; Sajida, Gita Nur; Legawati, Lisa; Suhendri, Suhendri; Meldha, Zuqni; Yolanda, Yogi; Hendri, Yola Bertilsya; Rusmana, Marcela Anandita
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 8 No. 3 (2025): July
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v8i3.48117

Abstract

The water-gas shift (WGS) reaction is a crucial process for increasing hydrogen (H₂) production by minimizing carbon monoxide (CO) content. It is widely applied in the petrochemical industry to reduce CO levels in syngas produced from hydrocarbon reforming. Conventionally, this reaction is conducted in two stages: high-temperature shift (HTS) and low-temperature shift (LTS). However, this approach presents both technical and economic limitations. To address these issues, catalysts capable of operating optimally at intermediate temperatures—referred to as medium-temperature shift (MTS)—have been developed. The scope of discussion in this article consists of catalyst development challenges such as sintering, deactivation, and side reactions. This review is intended to serve as a reference for the development of efficient WGS catalysts under MTS conditions, along with modification strategies aimed at enhancing their performance based on current research findings.
STRATEGIES FOR ENHANCING THE PERFORMANCE OF LI [NIXCOYMN1-X-Y] O2 CATHODE MATERIALS FOR LI-ION BATTERIES HENDRI, YOLA BERTILSYA; Heni Sugesti; Zuqni Meldha; Lisa Legawati; Salma Liska; Yogi Yolanda; Amun Amri
Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Vol. 7 No. 2 (2025): Literasi Artikel Penelitian Kimia
Publisher : Program Studi Kimia, Fakultas MIPA, Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/jc.v7i2.6193

Abstract

Abstract Li[NixCoyMn1-x-y]O2 layered oxides Cathode Materials are among the most widely studied cathode materials for lithium-ion batteries due to their high gravimetric and volumetric energy density compared to other type cathode materials. However, the practical deployment of Ni-rich NCM materials is hindered by severe degradation mechanisms, including cation-mixing, surface reconstruction, electrolyte reactivity, transition metal dissolution, and oxygen release, which compromise cycling stability and safety. This review systematically synthesizes recent progress in advanced modification strategies designed to mitigate degradation in Li[NixCoyMn1-x-y]O2 cathodes. The discussion is structured into four major approaches: (i) surface modification, which employs protective coatings to suppress interfacial reactions and stabilize the cathode–electrolyte interphase; (ii) elemental doping, which strengthens the lattice, reduces cation mixing, and inhibits oxygen evolution; (iii) single-crystal engineering, which eliminates grain-boundary failure and improves thermal stability; and (iv) concentration-gradient architectures, which alleviate internal stress and enhance the durability of Ni-rich cathodes. Empirical evidence demonstrates that these strategies not only extend cycle life but also provide mechanistic insights into the underlying degradation pathways. By consolidating findings from recent experimental, this review highlights the necessity of integrating structural, chemical, and morphological interventions to realize the full potential of Ni-rich NCM cathodes. The insights presented offer a framework for designing safer, higher-performance, and commercially scalable lithium-ion batteries. Abstrak Li[NixCoyMn1-x-y]O2 berbasis oksida berlapis merupakan salah satu material katoda yang paling banyak dikaji dalam pengembangan baterai litium-ion. Keunggulan utamanya terletak pada kerapatan energi gravimetri dan volumetri yang lebih tinggi dibandingkan dengan jenis katoda lain. Namun demikian, penerapan praktis material NCM kaya nikel masih menghadapi sejumlah kendala serius akibat berbagai mekanisme degradasi, antara lain pencampuran kation, rekonstruksi permukaan, reaktivitas dengan elektrolit, pelarutan logam transisi, serta pelepasan oksigen. Mekanisme-mekanisme tersebut secara langsung menurunkan stabilitas siklus dan tingkat keselamatan baterai.Ulasan ini menyajikan sintesis sistematis mengenai perkembangan mutakhir strategi modifikasi lanjutan yang dirancang untuk menekan degradasi pada katoda Li[NixCoyMn1-x-y]O2. Terdapat empat pendekatan utama yang dibahas, yaitu: (i) modifikasi permukaan, melalui penerapan lapisan pelindung guna menekan reaksi antarmuka dan menstabilkan lapisan katoda–elektrolit; (ii) doping unsur, yang berfungsi memperkuat struktur kisi, mengurangi pencampuran kation, serta menekan evolusi oksigen; (iii) rekayasa kristal tunggal, yang mengatasi kegagalan pada batas butir sekaligus meningkatkan stabilitas termal; dan (iv) arsitektur gradien konsentrasi, yang mampu meredam tegangan internal dan memperpanjang daya tahan katoda kaya nikel. Hasil-hasil empiris menunjukkan bahwa penerapan strategi tersebut tidak hanya memperpanjang umur pakai siklus, tetapi juga memperkaya pemahaman tentang mekanisme degradasi yang mendasari. Dengan mengintegrasikan temuan-temuan eksperimental terbaru, ulasan ini menegaskan pentingnya perpaduan intervensi struktural, kimia, dan morfologis untuk mengoptimalkan kinerja katoda NCM kaya nikel. Wawasan yang dihadirkan sekaligus menawarkan kerangka konseptual bagi pengembangan baterai litium-ion yang lebih aman, berkapasitas tinggi, dan memiliki prospek komersialisasi yang luas.
Optimalisasi Potensi Desa,Pengolahan Limbah Perkebunan Sawit Menjadi Briket Sebagai Energi Alternatif Yang Bernilai Ekonomi Tinggi Zidhan, Muhammad; Legawati, Lisa; Haura Arnel, Ashilah
Jurnal Pengabdian UntukMu NegeRI Vol. 7 No. 2 (2023): Pengabdian Untuk Mu negeRI
Publisher : LPPM UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jpumri.v7i2.5782

Abstract

Perkebunan kelapa sawit menghasilkan sisa atau limbah pasca panen yang belum dimanfaatkan secara optimal dan dibiarkan begitu saja hingga menumpuk dan membusuk di area perkebunan. kelompok 48 Desa Sungai Buluh tertarik untuk memberikan edukasi ke Masyarakat dalam pembuatan briket menggunankan limbah pelepah sawit yang diharapkan nantinya Masyarakat mampu memanfaatkan limbah pelepah sawit menjadi mata pencarian baru.Kegiatan yang menjadi program kerja utama yaitu mengoptimalkan potensi desa salah satunya dengan memanfaatkan limbah pelepah sawit menjadi produk bernilai ekonomi tinggi. Kegiatan awal yang dilakukan adalah memberikan sosialisasi kepada masyarakat secara langsung tentang potensi limbah perkebunan sawit dan cara pengolahan limbah pelepah sawit sehingga menghasilkan produk briket yang dapat dipasarkan dan digunakan untuk kebutuhan sehari-hari. program ini dimulai dengan mengumpulkan beberapa limbah perkebunan sawit berupa pelepah sawit. Pelepah sawit kemudian dijemur dan dikeringkan terlebih dahulu. Setelah itu, pelepah sawit yang sudah kering dibakar dan dihaluskan menjadi kecil hingga akhirnya dibentuk. tahap uji coba hasil briket yang sudah jadi dilakukan di sekitar rumah warga yang sasaran utamanya adalah UMKM Desa Sungai Buluh. Melalui pembuatan produk briket ini dapat membantu warga desa memanfaatkan limbah pelepah sawit yang tidak terpakai.
Sosialisasi Pemanfaatan Bonggol Jagung Menjadi Briket Arang Sebagai Sumber Energi Ermal, Dini Aulia Sari; Lisa Legawati; Dwi Annisa Fithry; Rozar Rayendra; Jusnita; D.d Zulfa; Ardian Pratama
Jurnal Pengabdian UntukMu NegeRI Vol. 9 No. 2 (2025): Pengabdian Untuk Mu negeRI
Publisher : LPPM UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jpumri.v9i2.8962

Abstract

Kegiatan pengabdian masyarakat ini bertujuan untuk meningkatkan perekonomian masyarakat melalui pemanfaatan limbah bonggol jagung menjadi briket arang sebagai sumber energi alternatif. Kegiatan ini dilakukan karena adanya potensi limbah bonggol jagung yang melimpah di kawasan Kayu Manis, Payung Sekaki, Pekanbaru sehingga dapat dimanfaatkan untuk memenuhi kebutuhan sumber daya energy yang lebih ramah lingkungan. Metode yang digunakan pada kegiatan pengabdian ini dengan memberikan penyuluhan teknis kepada ibu-ibu rumah tangga tentang proses pengolahan bonggol jagung yang terdiri dari beberapa proses yaitu pengeringan limbah bonggol jagung, pencacahan, pembakaran, pencampuran dengan perekat dan pencetakan briket arang dari limbah bonggol jagung. Hasil dari kegiatan ini menunjukkan adanya peningkatan kesadaran lingkungan yang terlihat dari antusiasme peserta yang tinggi, serta adanya motivasi untuk mengembangkan usaha melalui pemanfaatan limbah. Namun, program ini masih memerlukan dukungan dan implementasi praktek secara berkelanjutan. Kegiatan pengabdian ini juga diharapkan dapatmenjadi langkah awal dalam pemanfaatan limbah organic menjadi sumber energy alternative yang ramah lingkungan, serta memberikan dampak positif terhadap perekonomian masyarakat setempat.
Review dalam Pembuatan Arang Aktif Berbasis Limbah Pertanian Dengan Microwave Fithry, Dwi Annisa; Jusnita, Jusnita; Legawati, Lisa; Ermal, Dini Aulia Sari; Prayogo, Hidayat
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 1 (2023): April 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i1.15632

Abstract

Conventional handling of biomass waste, such as burning biomass, can cause other problems, and is not effective. Another common handling method is utilizing biomass waste. Second, conventional handling does not significantly reduce the amount of biomass waste. Microwave heating uses several power parameters and activation time to determine the effect of power and activation time on iodine number and surface area [25]. Activated charcoal is used as a raw material because it is hard charcoal and has good quality, and microwaves are used because it saves energy and time. Microwave treatment to study the effect of concentration and time of microwave irradiation separately on iodine number and adsorption capacity. The results of the FTIR spectra show that activated carbon has an –OH group. The results of the adsorption test showed that the activated carbon that had been prepared was able to absorb ions at the optimum concentration. Adsorption isotherm studies were carried out using the Langmuir equation. Microwave irradiation time also has a significant effect on the quality of activated carbon in the microwave irradiation time range
Enhancing Community Awareness Through Waste Bin Provision at Pangkalan Bunut Market to Achieve a Clean and Healthy Environment Legawati, Lisa; Yolanda, Yogi; Meldha, Zuqni; Sembiring, Maria Peratenta; Zulfansyah, Zulfansyah; Ermal, Dini Aulia Sari
Journal of Social and Community Service Vol. 4 No. 3 (2025): November 2025
Publisher : Faculty of Engineering University of Pahlawan Tuanku Tambusai

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

Abstract

Environmental awareness and concern for cleanliness remain common challenges, not only in urban areas but also in rural communities. In Pangkalan Bunut Village, the issue of poor waste management persists, largely due to limited community awareness and the lack of adequate waste disposal facilities. To address this problem, our Community Service Team implemented a program to provide waste bins in the Pangkalan Bunut Market. This initiative aimed to encourage proper waste disposal practices, improve environmental awareness, and promote a clean and healthy environment. The program produced several positive outcomes: (1) increasing community understanding of the importance of waste management and environmental care; (2) providing accessible waste bins at the market to support cleaner surroundings; and (3) fostering behavioral change, as residents became more aware of the importance of proper waste disposal. This initiative is expected to serve as a model for sustaining cleanliness and environmental health in Pangkalan Bunut Village.
Tantangan Implementasi Program B40 di Indonesia: Tinjauan Teknis dan Ketersediaan Bahan Baku Biodiesel Eka Alel, Ariya; Hastuti, Ririn Puji; Legawati, Lisa
SURYA TEKNIKA Vol 12 No 2 (2025): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v12i2.10770

Abstract

The B40 program is a continuation of Indonesia’s mandatory biodiesel policy, which requires blending 40% palm oil–based biodiesel with 60% conventional diesel fuel. This program aims to reduce dependence on fossil fuel imports while supporting national greenhouse gas emission reduction targets. This study analyzes the challenges of B40 implementation in Indonesia, focusing on feedstock availability as well as technical aspects of biodiesel production and distribution. The research employs a desk study approach using secondary data from GAPKI, BPDPKS, the Ministry of Energy and Mineral Resources, and relevant scientific literature. The results indicate that Indonesia’s crude palm oil (CPO) production in the first half of 2025 reached approximately 27.89 million tons, while the CPO requirement for B40 is projected at around 13.5 million tons. The installed capacity of the national biodiesel industry is about 20 million kiloliters per year, exceeding the projected B40 biodiesel demand of 15.6 million kiloliters. However, technical challenges remain, including biodiesel quality issues, dependence on imported methanol, and distribution constraints in remote regions. Overall, the B40 program has the potential to reduce emissions by approximately 25–28 million tons of CO₂-equivalent per year and contribute to Indonesia’s energy transition.
Implementasi Pemeliharaan Ikan Patin di Kolam Berbasis Pakan Herbal Kunyit Putih untuk Meningkatkan Produktivitas dan Ketahanan Pangan Kelompok Budidaya Pokdakan Bangun Makmur di Desa Parit Aman, Kecamatan Bangko, Kabupaten Rokan Hilir Rusliadi, Rusliadi; Masjudi, Heri; Tang, Usman M.; Sari, Mira Rahmita; Renolafitri, Hendrini; Saspriatnadi, Morian; Meldha, Zuqni; Legawati, Lisa; Aprianti, Rahma; Sari, Anelia Diah Wintang
Unri Conference Series: Community Engagement Vol 7 (2025): Seminar Nasional Pemberdayaan Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/unricsce.7.419-425

Abstract

Bangun Makmur Fish Farming Group in Parit Aman Village, Bangko District, Rokan Hilir Regency, participated in a community service program focusing on catfish farming technology through the integration of white turmeric-based herbal feed and rabal probiotics. This initiative aimed to enhance productivity, reduce production costs, and strengthen food security and the local economy. The program was implemented through training, field practice, mentoring, and continuous evaluation using a learning by doing approach. The results indicated notable improvements in farming performance. The use of white turmeric herbal feed reduced the Feed Conversion Ratio (FCR) to as low as 1.5, decreased feed costs by 28%, and increased fish harvest weight by 15 25%. The application of rabal probiotics contributed to more stable water quality, lowered fish mortality to below 15%, and improved water-use efficiency. In addition to technical outcomes, group members improved their management capacity by adopting Good Aquaculture Practices (CBIB), digital record-keeping, and online marketing strategies. Overall, the program demonstrated that combining herbal feed and probiotic technology with strengthened management practices is an effective strategy to promote economic independence and establish aquaculture as a sustainable alternative to secure food and livelihoods in rural communities.
Combination of Starch and Pectin as Raw Materials for Making Edible Film Meldha, Zuqni; Fermi, Muhammad Iwan; Legawati, Lisa; Liska, Salma; Yolanda, Yogi; Hendri, Yola bertilsya; Amri, Idral
Journal of Engineering Science and Technology Management (JES-TM) Vol. 6 No. 1 (2026): Maret 2026
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v6i1.300

Abstract

Food spoilage, driven by factors like microbes and oxygen, is a major challenge in food preservation. Edible films offer an eco-friendly and biodegradable solution, acting as a protective barrier that reduces waste and extends a product's shelf life. While starch is a common and affordable material for these films, it has limitations, including poor water resistance and brittleness. This study investigates combining starch and pectin to create a superior composite edible film. This approach leverages the synergistic interaction between the two materials, which forms a more stable, dense structure through hydrogen bonds. This combination enhances key properties like tensile strength, flexibility, and water vapor resistance. The specific structure of the pectin, such as its level of methylation, is crucial, as it directly impacts how well it blends with starch and the film's final performance. By carefully controlling these interactions, the resulting edible films can achieve properties comparable to some fossil-based plastics, positioning them as a promising and sustainable alternative for food packaging. To support these findings, this research will analyze and review key performance factors from studies published over the past five years.
Co-Authors Aderiani, Suci Alltop Amri Ya Habib Alva Dela, Gita Amri, Idral Amun Amri Aprianti, Rahma Ardian Pratama Chandra, Yogi Cici Maarasyid D.d Zulfa Delvina Sari Dini Aulia Sari Ermal Dwi Annisa Fithry Eka Alel, Ariya Febrian, Amanda Fithry, Dwi Annisa Fitri, Suchy Arum Gusmita Putri, Messy Hadi Purwanto Hari Rionaldo Hastuti, Ririn Puji Haura Arnel, Ashilah Hendri, Yola Bertilsya Heni Sugesti Idayu, Ida Idral Amri Israyandi Israyandi Jusnita Jusnita Jusnita, Jusnita Luthfi, Alif M. Iwan Fermi Maria Peratenta Sembiring Masjudi, Heri Morian Saspriatnadi Nirwana Nirwana Nugraha, Mohd Farhan Olivia, Cindy Prayogo, Hidayat Ramadhani, Shafira Rachma Rawadi, Mhd Raihan Rawadi, Raihan Renolafitri, Hendrini Roza, Roza Rozar Rayendra Rusliadi Rusliadi Rusmana, Marcela Anandita Sajida, Gita Nur Salma Liska Salsabila, Naia Sari, Anelia Diah Wintang Sari, Mira Rahmita Suchy Arum Fitri Suci Aderiani Sugesti, Heni Suhendri Suhendri Syamsu Herman Usman Muhammad Tang Viona Aulia Rahmi Yayan Satria Yolanda, Yogi Zafira, Nesa Zidhan, Muhammad Zulfansyah Zulfansyah Zulfansyah Zulfansyah Zulfansyah Zuqni Meldha