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All Journal International Journal of Renewable Energy Development Jurnal Teknik Kimia USU JURNAL KONVERSI Al-Kimia Jurnal Rekayasa Proses Jurnal Teknologi Jurnal Migasian Akamigas Balongan Indramayu Jurnal Pengabdian Masyarakat Teknik Wood Research Journal : Journal of Indonesian Wood Research Society Wood Research Journal : Journal of Indonesian Wood Research Society Dedikasi: Jurnal Pengabdian kepada Masyarakat Jurnal Teknik Kimia USU Jurnal Pengabdian Masyarakat Bangsa Jurnal Migasian International Journal of Renewable Energy Development JURNAL REKAYASA KIMIA & LINGKUNGAN
Herliati Rahman
Department Of Chemical Engineering, Faculty Of Industrial Technology, University Of Jayabaya
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Innovations in the Cement Industry: Advancing Towards Sustainable Concrete Production Rahman, Herliati; Rizqy F, Muhammad
Jurnal Rekayasa Kimia & Lingkungan Vol 19, No 2 (2024): Jurnal Rekayasa Kimia & Lingkungan (December, 2024)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v19i2.35460

Abstract

Slag, an artificial pozzolan derived from the by-product of metal ore smelting, exhibits notable richness in active silica and alumina. This investigation scrutinizes the influence of slag as a clinker substitute on cement quality. The study explores the composition range of slag from 15.69% to 20.39% of the total cement mass. Other constituent materials, including gypsum (2.07%), limestone (17.24-22.54%), and clinker (55-65%), are compared with commercial cement available in the market, featuring 73.09% clinker, 2.07% gypsum, 11.89% limestone, and 12.95% trass. The study employs rigorous physical tests, encompassing Blaine, residue at 45 m (325 mesh), flowability, setting time, and compressive strength assessments at 1, 3, 7, and 28 days. The Blaine testing, the residue at 45 m, and other tests were conducted meticulously to ensure the accuracy and reliability of the results. Blaine testing measured specific surface area, residue at 45 m assessed fineness, flowability evaluated paste workability, setting time determined paste stiffness, and compressive strength assessed material durability. All tests followed ASTM standards, providing reliable insights into cement performance. Compared to the commercial sample, there is a decrease in compressive strength in all results with an increase in the amount of slag. This condition is because components such as tricalcium silicate (C3S) and dicalcium silicate (C2S), which play a crucial role in producing hydration strength, decrease with the reduction of clinker. However, the compressive strength specified by ASTM C 109/109M-01 280 kg/m2 standard is still exceeded. Optimal results are obtained with a slag substitution of 16.64%, resulting in compressive strength of 305 kg/m2 at 28 days. This investigation highlights slag as a promising substitute for clinker in cement production due to its high silica content. Slag offers several advantages, including enhanced sustainability by reducing environmental impact and lowering production costs. Its utilization diversifies raw material sources, promoting industry resilience.
Penerapan Otomatisasi Sistem Instalasi Pipa Penyiraman Untuk Pendinginan Greenhouse Pada Kelompok Usaha Mikro Cahaya Farm Di Carang Pulang Bogor Widyawati, Yeti; Handini, Wike; Widanti, Nurdina; Witdi Yanto, Nur; Wiji Lestari, Sri; Herliati, Herliati; Novria Sonjaya, Abeth; Sekar Ningrum, Sari
Dedikasi:Jurnal Pengabdian kepada Masyarakat Vol. 5 No. 2 (2025): Jurnal Dedikasi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/dedikasi.v5i2.394

Abstract

The process of hydroponic plant cultivation in the Cahaya Farm Micro Business Group's greenhouse is hindered by the fact that the temperature in the greenhouse, especially during the day, rises to 37°C. The elevated temperatures characteristic of the dry season has been shown to adversely affect the quality of lettuce, thereby reducing the overall yield and, consequently, the revenue generated from its cultivation. The primary objective of this initiative is to facilitate the installation of a pipe system and a sprayer that can operate automatically to reduce the temperature in the greenhouse. This is expected to enhance community well-being and reduce unemployment. The engineering of the design of equipment installation, the procurement of components, the installation of a watering system for cooling, and the surveying of satisfaction with the results of PkM performance require stages that must be executed with the requisite calculations. Presently, the nozzle installed on the roof of the greenhouse is operational, as are the automatic timer and application MQTT (Message Queuing Telemetry Transport) dashboard. The Campus PkM program's trainee assessment demonstrated notable success, with an average score of 3.77 out of a 4.00 scale, representing 94.13% of the maximum attainable score. This observation was particularly evident in the domains of teacher quality and empathy, as evidenced by the attainment of scores of 3.89 and 4.00, respectively.
Pemanfaatan Minyak Jelantah Sebagai Bahan Baku Lilin Aroma Terapi Di Kelurahan Jatijajar, Kecamatan Tapos, Kota Depok, Jawa Barat widanti, Nurdina; Rahman, Herliati; Widyawati, Yeti; Sekar Ningrum, Sari; Wiji Lestari, Sri; Handini, Wike; Witdi Yanto, Nur; Novria Sonjaya, Abeth; Zulkifli, Zulkifli; Aji Priyadi, Dimas; Taufiq Q, Mochamad; Veronika Sembiring, Rena; Apriliani, Rahmadita; Agassya, Vicky; Januar Ikhsan, Adam
Dedikasi:Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 1 (2023): Jurnal Dedikasi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/dedikasi.v4i1.271

Abstract

Limbah minyak goreng atau dikenal dengan nama minyak jelantah adalah salah satu limbah cair yang dihasilkan dari kegiatan rumah tangga. Namun sayangnya, masih banyak masyarakat membuang minyak jelantah ke lingkungan karena kurangnya edukasi mengenai dampak buruk minyak jelantah tersebut bagi kelestarian lingkungan. Untuk mengatasi hal tersebut, tim P2M Universitas Jayabaya yang terdiri dari dosen dan mahasiswa bermitra dengan Kelompok Wirausaha Baru (WUB) guna memanfaatkan minyak jelantah menjadi produk yang bernilai jual lebih tinggi. Kelompok WUB sebagian besar terdiri dari ibu-ibu rumah tangga yang merupakan tulang punggung keluarga.  Saat ini minyak jelantah hanya dijual dengan harga murah tanpa proses pengolahan. Tim P2M Universitas Jayabaya menawarkan solusi yaitu memberikan pelatihan untuk memanfaatkan minyak jelantah sebagai bahan baku pembuatan lilin aroma terapi yang jika dijual memiliki nilai tambah. Selain minyak jelantah bahan baku lain yang diperlukan adalah asam stearin, dan bahan pendukung seperti pewarna minyak dan pengharum. Peserta dari kelompok WUB Kelurahan Jatijajar, Kecamatan Tapos, Kota Depok, Jawa barat yang mengikuti pelatihan sebanyak 16 orang ibu-ibu rumah tangga. Usia peserta berada pada rentang 33-44 tahun sebanyak 18,8%, 45-52 tahun sebanyak 43,8 %, dan sisanya berusia di atas 52 tahun. Sedangkan tingkat pendidikan para peserta yaitu sarjana sebanyak 18,8%, SMA 68,8%, SMP 6,3 %, dan SD 6,3%. Berdasarkan hasil analisis terhadap penilaian yang diberikan responden, kualitas Pengabdian kepada Masyarakat Universitas Jayabaya memberikan rata-rata nilai indeks 3,87 dari 7 parameter yang diukur. Ini artinya indeks kinerja berada dalam nilai interval 2,86 – 4,00 atau nilai interval konversi sebesar 96,65%. Angka yang diperoleh berada dalam nilai interval konversi yaitu antara 81,26 – 100, hal ini mengindikasikan bahwa mutu pelayanan program Pengabdian  Kepada Masyarakat mendapatkan nilai A dengan kata lain Kinerja Unit Pelayanan P2M Universitas jayabaya dengan mitra kelompok WUB Perumahan Jatijajar, Kelurahan Jatijajar, Kecamatan Tapos, Kota Depok, Jawa barat “Sangat Baik/Sesuai”.
Evaluasi Implementasi Otomatisasi Sistem Instalasi Pipa Penyiraman Untuk Pendinginan Greenhouse Terhadap Hasil Panen Pada Kelompok Usaha Mikro Cahaya Farm Di Carang Pulang Bogor Novria Sonjaya, Abeth; Handini, Wike; Yanto, Nur Witdi; Lestari, Sri Wiji; Herliati, Herliati; Widanti, Nurdina; Ningrum, Sari Sekar; Widyawati, Yeti
Dedikasi:Jurnal Pengabdian kepada Masyarakat Vol. 6 No. 1 (2025): Jurnal Dedikasi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/dedikasi.v6i1.433

Abstract

Proses budidaya hidroponik di greenhouse Kelompok Usaha Mikro Cahaya Farm menghadapi tantangan suhu tinggi, terutama saat siang hari di musim kemarau, yang mencapai hingga 37°C. Kondisi ini berdampak negatif terhadap kualitas tanaman selada, menyebabkan penurunan hasil panen dan berimbas pada pendapatan usaha. Penelitian ini bertujuan mengevaluasi efektivitas sistem otomatisasi instalasi pipa penyiraman sebagai pendingin greenhouse dalam meningkatkan produksi dan kualitas tanaman hidroponik. Survei kepuasan terhadap hasil panen dilakukan menggunakan Google Form dengan skala Likert 1–4 untuk menilai aspek kualitas, brand equity, reliability, responsiveness, empathy, dan tangible dari sistem yang diterapkan. Hasil menunjukkan peningkatan signifikan yaitu panen per meja naik dari 13–15 kg menjadi 18–22 kg, bobot per lubang tanam dari 90–130 g menjadi 110–150 g, kualitas daun membaik, dan waktu panen lebih cepat dari 28–35 HST menjadi 25–29 HST. Penilaian keseluruhan terhadap penerapan sistem pendingin dalam program PkM Kampus mencapai 3,55 dari skala 4,00 atau 88,75%, khususnya untuk kualitas produk (quality) 3,66 (91,50%) dan produktivitas pada waktu panen 3,60 (90,00%). Keywords: hydroponic plant cultivation temperature, cooling installation, Likert survey research, assessment score   
Co-Authors Ade Indri Agassya, Vicky Aidha Zulaika Aji Priyadi, Dimas Andreansyah, Ilham Apriliani, Rahmadita Asyha, Dyah Puspita Ayu Nehemia Ayu Widyaningrum Deby Anisah Dody Guntama Dody Guntama Dyah Puspita Asyha Fitriani, Firda Gilang Lukman Hakim Hadiatun Puji Astuti Ilham Andreansyah Isnaeni, Putri Januar Ikhsan, Adam Lukman Nulhakim Lukman Nulhakim Lukman Nulhakim Mentari, Puji Rizana Ayu Mubarokah Nuriaini Dewi Naidir, Ferra Ningrum, Sari Sekar Novria Sonjaya, Abeth Nulhakim, Lukman Nurdina Widanti Puput Dwi Rahayu Rizqy F, Muhammad Salasa, Akhirudin Satrio Nur Pambudi Sefaniyah Sefaniyah Sekar Ningrum, Sari Septian Bagus Prasetyo Shafira Fildza Arini Sonjaya, Abeth Novria Sri Wiji Lestari Syamani, Firda Aulya Taufiq Q, Mochamad Veronika Sembiring, Rena Vredyta Utomo Wahyu Endrunaka Wahyu Hendry K, Seventien Wiji Lestari, Sri Wike Handini Witdi Yanto, Nur Yanto, Nur Witdi Yeti Widyawati Yogi Verinaldy Zulkifli Zulkifli