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All Journal Jurnal Rekayasa Proses Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Eksergi: Chemical Engineering Journal Elkawnie Journal of Energy, Mechanical, Material and Manufacturing Engineering Jurnal Rekayasa Proses Risenologi Jurnal Abdidas Pelita Masyarakat Jurnal Pengabdian kepada Masyarakat Nusantara Unri Conference Series: Community Engagement Journal of Applied Materials and Technology Journal of Rural and Urban Community Empowerment Journal of Bioprocess Chemical and Environmental Engineering Science Journal of Community Engagement Research for Sustainability JURNAL KIMIA SAINTEK DAN PENDIDIKAN Seminar Nasional Produk Terapan Unggulan Vokasi Estungkara: Jurnal Pengabdian Pendidikan Sejarah Nanggroe: Journal Of Scholarly Service Jurnal Pengabdian Masyarakat Bangsa Nanggroe: Journal of Scholarly Service BATOBO: Jurnal Pengabdian Kepada Masyarakat Inspirasi: Jurnal Pengabdian Masyarakat Jurnal Rekayasa Proses Journal of Engineering and Technological Sciences Rekayasa: Jurnal Penerapan Teknologi dan Pembelajaran
Desi Heltina
Universitas Riau
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Peningkatan Ketahanan Lingkungan Desa Batu Belah Melalui Penanaman Artocarpus integer sebagai Pencegah Banjir Sembiring, Maria Peratenta; Heltina, Desi; Irianty, Rozanna Sri; Fermi, Muhammad Iwan; Yolanda, Yogi; Suhendri, Suhendri
BATOBO: Jurnal Pengabdian Kepada Masyarakat Vol 3 No 1: BATOBO: Juni 2025
Publisher : Jurusan Teknik Elektro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/batobo.3.1.31-39

Abstract

Desa Batu Belah, Kecamatan Kampar, Riau, mengembangkan strategi pencegahan banjir berkelanjutan melalui penanaman Artocarpus integer (cempedak). Tanaman ini dipilih karena akarnya yang kuat dapat menyerap air dan mencegah erosi. Selain itu, cempedak juga berpotensi sebagai sumber ekonomi lokal melalui pengolahan produk makanan. Kegiatan ini dilakukan secara gotong royong, memperkuat kebersamaan masyarakat dan meningkatkan kesadaran lingkungan. Hasilnya adalah peningkatan ketahanan lingkungan dan potensi ekonomi masyarakat. Strategi ini menunjukkan bahwa penanaman Artocarpus integer dapat menjadi solusi efektif untuk mengurangi risiko banjir dan meningkatkan kualitas hidup masyarakat. Dengan demikian, desa ini menjadi model bagi pengembangan masyarakat yang berkelanjutan dan peduli lingkungan, serta meningkatkan keindahan dan keamanan lingkungan.
Pemanfaatan Ekstrak Daun Ketapang (Terminalia catappa L.) sebagai Antibakteri untuk Produksi Sabun Cair Nurfatihayati Nurfatihayati; Desi Heltina; Eden Putra; Fahrul Fajar Delef; Cory Dian Alfarisi; Drastinawati Drastinawati
Eksergi Vol 21 No 1 (2024)
Publisher : Prodi Teknik Kimia, Fakultas Teknik Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v21i1.10148

Abstract

Ekstrak daun ketapang (Terminalia catappa L.) mengandung senyawa kimia antibakteri yang dapat dimanfaatkan dalam memproduksi sabun cair. Tujuan penelitian ini memperoleh sabun cair dan menentukan variasi terbaik ekstrak ketapang untuk sabun cair yang memenuhi mutu sabun cair SNI 4085-2017. Penelitian ini bersifat eksperimental yang terdiri dari ekstrak daun ketapang dengan konsentrasi 0%, 2%, 4%, dan 6% serta KOH 25%, 30% dan 35%. Pembuatan ekstrak daun ketapang dilakukan dengan cara maserasi. Proses pembuatan sabun menggunakan metode hot process. Pengujian sabun cair meliputi uji pH, asam lemak bebas, angka lempeng total, stabilitas busa, menghitung perolehan sabun cair, dan menentukan variasi terbaik ekstrak ketapang pada sabun cair. Hasil penelitian ini menunjukkan perolehan sabun cair terbesar terdapat pada konsentrasi KOH 30% dengan konsentrasi ekstrak 4%, yaitu 157,35 gram dan rendemen 52,45%. Variasi ekstrak daun ketapang terbaik diperoleh pada konsentrasi 4% pada konsentrasi KOH 25% dengan karakteristik sabun cair, yaitu pH 9,19, asam lemak bebas 1,74%, angka lempeng total 0 x 101 koloni/ml, stabilitas busa 96,26%, dan zona hambat 11 mm. Sabun cair dengan variasi ekstrak daun ketapang yang dihasilkan telah memenuhi standar SNI 4085:2017.
Pengembangan Usaha Pertanian Masyarakat Desa Pekan Tua Dengan Pemanfaatan Limbah Dapur melalui Eco-Enzyme Heltina, Desi; Waruwu, Desriang; Amelia, Rahma; M. Yovi, M. Yovi
Jurnal Pengabdian Masyarakat Bangsa Vol. 3 No. 4 (2025): Juni
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v3i4.2377

Abstract

Desa Pekan Tua, yang terletak di Kecamatan Kempas, Kabupaten Indragiri Hilir, Provinsi Riau, mencakup area seluas 152,81 km² pada koordinat bujur 102.76931 dan lintang -0.49684. Dengan iklim tropis dan curah hujan 2.827 mm pada tahun 2022, sebagian besar penduduknya bekerja di sektor perikanan, pertanian, dan perkebunan. Artikel ini menyoroti potensi pengembangan di bidang pertanian dan perkebunan melalui produksi eco-enzim. Dibuat dari limbah organik atau limbah dapur, air, dan gula merah, eco-enzim berfungsi sebagai pupuk cair ramah lingkungan yang meningkatkan pertumbuhan sayuran dan hasil pertanian. Selain memperbaiki tanah dengan mengurangi logam berat, menyesuaikan pH, dan melawan bakteri, mikroba, serta virus, eco-enzim juga bermanfaat dalam kehidupan sehari-hari sebagai penyembuh luka dan pemurni udara serta polutan. Lebih lanjut, produksi eco-enzim memberikan petani alternatif pupuk cair yang lebih murah dibandingkan harga pasaran. Inovasi ini berpotensi bagi sektor pertanian dan masyarakat lokal, mendukung produktivitas tanaman sambil menawarkan solusi pupuk yang berkelanjutan dan ekonomis.
Facile and Environmentally Friendly Synthesis of Low-defect Few-Layers Graphene (FLG) Using Combined Shear Exfoliation Methods Amri, Amun; Wulandari, Revika; Fabryza, Dhina; Sunarno, Sunarno; Heltina, Desi; Bahri, Syaiful; Sarma, Deki; Miran, Hussein A.; Rahman, M. Mahbubur; Altarawneh, Mohammednoor; Jiang, Zhong Tao
Journal of Engineering and Technological Sciences Vol. 57 No. 5 (2025): Vol. 57 No. 5 (2025): October
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2025.57.5.4

Abstract

This study presents an environmentally friendly and scalable method for synthesizing high-quality few-layer graphene (FLG) through a combination of turbulence-assisted shear exfoliation (TASE) and high shear exfoliation (HSE) techniques. By systematically varying the high-shear mixer (HSM) speed (3000–5000 rpm) and processing time (1–3 hours), we precisely controlled key material attributes, including the number of graphene layers, crystallinity, lateral size, and defect density. Optimal conditions (5000 rpm, 3 hours) resulted in FLG with ~2–3 layers, confirmed by a symmetric 2D peak with a full-width at half-maximum (FWHM) of ~35 cm⁻¹ and a high I2D/IG ratio (~0.6), indicating excellent structural integrity. The ID/IG ratio (~0.1) further verified the presence of minimal defects, predominantly edge vacancies rather than oxidative disruptions. Raman imaging revealed a dominance of zigzag edge chirality, while TEM and PSA analyses demonstrated control over lateral size (~396.5 nm) and particle uniformity. The application of household dishwashing liquid as a green surfactant innovatively enabled selective and pure exfoliation. This work highlights how precise modulation of shear parameters can directly influence graphene quality, paving the way for sustainable large-scale production of low-defect FLG.
Performance Test of Methylene Blue Degradation Using TiO₂–Graphene Oxide Composite Synthesised from Coconut Shells Heltina, Desi; Fesya Putri, Andini; Fauziyah, Hidayatul; Peratenta Sembiring, Maria; Amri, Amun; Tao Jiang, Zhong
Rekayasa Vol. 23 No. 1 (2025)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/rekayasa.v23i1.32529

Abstract

Industry produces textile liquid waste which contains dangerous compounds such as methylene blue which can damage the environment. One effective method to overcome this problem is to use a TiO2 nanocomposite-based photocatalyst modified with Graphene Oxide (GO). GO is obtained from the synthesis of coconut shells, which is a biomass waste. This research aims to synthesize and display the performance of a TiO2/Graphene Oxide composite photocatalyst from coconut shells in degrading methylene blue. The TiO2/Graphene oxide nanocomposite synthesis method begins by carbonizing coconut shells to form graphite. Carbonization removes volatile compounds and produces a rich carbon structure, which is the initial requirement for the formation of GO. Synthesis of GO from graphite using the Hummer method. Synthesis of TiO2/Graphene oxide composite using a solvothermal process with various GO mass ratios. The performance of the photocatalyst was tested for degradation using methylene blue. Analysis of the TiO2/Graphene Oxide Composite using XRD, FTIR, SEM, BET characterisation and UV-Vis Spectrophotometer. The results show that at GO of 15%, the composite showed the highest surface area and optimal anatase crystallinity, resulting in the best degradation efficiency (70%). Graphene Oxide is synthesized from coconut shell biomass waste. This research shows that the TiO₂–Graphene Oxide composite has high efficiency in degrading dangerous synthetic dyes from textile industry wastewater through an efficient photocatalytic mechanism. This composite application is an application of technology that contributes directly to achieving the Sustainable Development Goals (SDGs), especially SDG 6 (Clean Water and Adequate Sanitation), through the development of sustainable, efficient and environmentally friendly waste processing technology.
Co-Authors , Deviona, , Abid, Hussein Rasool Adharianti, Nia Ahmad Fadli Alfarisi, Cory Dian Alhabsy Affif Altarawneh, Mohammednoor Aman Aman Aman Aman Amelia, Rahma Amun Amri Amun Amri Annisa Ulhasanah Aqilla Cahyani Ari Sandhyavitri Arif Partama Asri, Ebel Vigrajuska Avisa, Utari Azhar, Muhammad Rizwan Azhari, Aulia Akmal Azhari, Ayu Azridjal Aziz Butar-Butar, Wahyu Tri Efendi Chairul Chairul Chairul Chairul Chairul, Chairul Delef, Fahrul Fajar Drastinawati Drastinawati Drastinawati Drastinawati Drastinawati Drastinawati, Drastinawati Dwi Imamatul Mastura Dwi Widyaningsih Eden Putra Edy Saputra Efrina, Restika Evelyn Evelyn Evelyn Evi Nadhifah Evi Nadhifah Fabryza, Dhina Fadhil, Rayhan Fadhila Ulfa Fahreza, Muhammad Fahrul Fajar Delef Fajar Restuhadi Fajri Aziz, Lutvhi Fanny Septya Fauziyah, Hidayatul Fesya Putri, Andini Fitri Zulva Hasanah Fitri, Lara Ismano Hapsoh Hasby Herdinasrul Hendro Ekwarso Hendro Ekwarso Idral Amri isna dini Isna Rahma Dini Iwana, Iwana Jailani, M. Fariz Jiang, Zhong Tao Komalasari Komalasari Komalasari Komalasari Komalasari Komalasari Laia , Ferlinus Saputra Liyana , Audi Lubis, Nursiani M. Iwan Fermi M. Nanda Dwi Putra M. Yovi, M. Yovi Maria Peratenta Sembiring Maysandy, Lily Mery Sukmiwati Miran, Hussein A. Misrulina Misrulina Muhammad Zaqi Nadhia Gasani Putri Nurfatihayati Nurul Azizah Paian Harianja Panjaitan, Zahwatul Nabila Peratenta Sembiring, Maria Praswasti PDK Wulan, Praswasti PDK Prawiranegara, Barata Aditya Primbodo , Selo Bambang Putra, Eden Putri Nawangsari, Putri Putri, Nazifa Ayu Rahman, M. Mahbubur Rahmi Adisti Raihan Daffansyah Sinaga Ramadhani , Micha Vania Reni Yenti, Silvia Renny Indriani Renny Indriani Ridwan Manda Putra Rizaldi Saputra Rozanna Sri Irianty Safridatul Audah Sarma, Deki Sativa, Oriza Sherly Fitri Rahmadhani Silvia Reni Yenti Silvia Reni Yenti Sinaga, Veranica Sitinjak, Monaeka Slamet . Soleha, Elisa Sri Djuniati Sri Yoseva Suhendri Suhendri Sukendi Sukendi Sunarno Sunarno SYAIFUL BAHRI Syamsu Herman Syamsu Herman Tao Jiang, Zhong Tarigan, Melisa Phebeyola E. Tengku Nurhidayah Tesa Agustin Utama, Panca Setia Wahyu Hidayat Waruwu, Desriang Wulandari, Revika Yahlim , Wasiah Fichtimar Yayan Setiawan Yolanda, Yogi Yusnimar Sahan Z Zulfansyah Zelfira, Afragenia Zulfansyah Zulfansyah Zulkarnain Zulkarnain Zulkarnaini Zulkarnaini Zuqni Meldha