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All Journal Jurnal Teknik Kimia USU JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Entomologi Indonesia JKPK (Jurnal Kimia dan Pendidikan Kimia) JCER (Journal of Chemistry Education Research) Jurnal Karinov JPP (Jurnal Pendidikan dan Pembelajaran) Indonesian Community Journal Jurnal Teknik Kimia USU Prapanca : Jurnal Abdimas Jurnal Pengabdian Pada Masyarakat METHABDI
Neena Zakia
Universitas Negeri Malang
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Physics Public Health Social Sciences Other

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Sintesis Nanohibrida Silika-urea Berbasis Abu Bagasse sebagai Pupuk Lepas Lambat Ramah Lingkungan Siti Muslimah; Nazriati; Neena Zakia
Jurnal Teknik Kimia USU Vol. 14 No. 2 (2025): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v14i2.21629

Abstract

The urea–silica nanohybrid is an innovative slow-release fertilizer designed to enhance nitrogen use efficiency in agriculture. This study synthesized the nanohybrid using silica sourced from bagasse ash via the sol-gel method. Silica was extracted by reacting the ash with sodium hydroxide to form sodium silicate, which was then converted into silicic acid through ion exchange using a cation resin. Ammonium hydroxide was added to adjust the pH to 5, forming a gel at room temperature. The gel was aged for 18 hours to strengthen its structure, then freeze-dried to produce hydrophilic silica aerogel. To form the nanohybrid, 1 g of silica aerogel was mixed with urea at varying concentrations, stirred for 24 hours, filtered, and dried at 40 °C. Characterization using Fourier Transform Infrared Spectroscopy (FTIR) confirmed the presence of Si–O–Si and Si–OH groups, along with urea-specific bands (C=O and N–H), indicating successful integration of urea into the silica matrix.
Sintesis Nanohibrida Silika-urea Berbasis Abu Bagasse sebagai Pupuk Lepas Lambat Ramah Lingkungan Siti Muslimah; Nazriati; Neena Zakia
Jurnal Teknik Kimia USU Vol. 14 No. 2 (2025): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v14i2.21629

Abstract

The urea–silica nanohybrid is an innovative slow-release fertilizer designed to enhance nitrogen use efficiency in agriculture. This study synthesized the nanohybrid using silica sourced from bagasse ash via the sol-gel method. Silica was extracted by reacting the ash with sodium hydroxide to form sodium silicate, which was then converted into silicic acid through ion exchange using a cation resin. Ammonium hydroxide was added to adjust the pH to 5, forming a gel at room temperature. The gel was aged for 18 hours to strengthen its structure, then freeze-dried to produce hydrophilic silica aerogel. To form the nanohybrid, 1 g of silica aerogel was mixed with urea at varying concentrations, stirred for 24 hours, filtered, and dried at 40 °C. Characterization using Fourier Transform Infrared Spectroscopy (FTIR) confirmed the presence of Si–O–Si and Si–OH groups, along with urea-specific bands (C=O and N–H), indicating successful integration of urea into the silica matrix.
Pelatihan Pembuatan Sabun Ramah Lingkungan dari Kulit Rambutan Sebagai Agen Kewirausahaan bagi SMAN 2 Pasuruan Wijaya, Dika Putra; Zakia, Neena; Danar, Danar; Maghfiroh, Ainun; Putri, Ghaitsa Zahira Shofa Pradana; Mahgfiro, Intan Dini; Hasan, Muhammad Ainur; Rahmawati, Ulfa
Jurnal Pengabdian Pada Masyarakat METHABDI Vol 5 No 1 (2025): Jurnal Pengabdian Pada Masyarakat METHABDI
Publisher : Universitas Methodist Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46880/methabdi.Vol5No1.pp13-23

Abstract

One of the important competencies to be mastered by students in the 21st century is entrepreneurial competency. The development of entrepreneurship for students is related to the natural potential in Pasuruan City, namely rambutan skin in training and mentoring. With this training activity, students of SMA Negeri 2 Pasuruan learn about the role of the creative economy industry or entrepreneurship according to potential trends in business development. The implementation method is through socialization and training in making environmentally friendly liquid soap and providing some materials on solutions regarding the use of liquid soap, especially at SMAN 2 Pasuruan to be trained in making liquid soap at SMAN 2 Pasuruan. The delivery of general description material about soap, things to consider in the content of soap ingredients, soap making training, to mentoring and discussions between students and Lecturers/Students. Based on the implementation of community service activities that have been carried out, namely increasing the understanding of students and teachers of SMAN 2 Pasuruan in producing soap that has the potential to help product development ideas and improve the quality of products from rambutan skin by encouraging soap making.
Analisis senyawa volatil dari ekstrak tanaman yang berpotensi sebagai atraktan parasitoid telur wereng batang coklat, Anagrus nilaparvatae (Pang et Wang) (Hymenoptera: Mymaridae) Wonorahardjo, Surjani; Nurindah, Nurindah; Sunarto, Dwi Adi; Sujak, Sujak; Zakia, Neena
Jurnal Entomologi Indonesia Vol 12 No 1 (2015): Maret
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (352.505 KB) | DOI: 10.5994/jei.12.1.48

Abstract

Plants produce volatiles as communication cues intra- or inter- species. Infested plants by herbivores will produce volatiles as indirect defense mechanism that attracts natural enemies of herbivores. Analysis of volatiles compounds produced by rice plant as result of infested brown plant hopper (BPH), Nilaparvata lugens Stí¢l, was done to identify compounds in the volatiles that potentially can be used as attractant for egg parasitoids of BPH, Anagrus nilaparvatae (Pang et Wang) (Hymenoptera: Mymaridae). This research was an early stage to develop formulation of parasitoid attractant. The research activities include volatiles extraction of infested rice stem by BPH eggs using acetone, n-hexane as the extraction solvents; analyses of volatile compounds with GC-MS; and bioassay of parasitoid orientation behavior to the volatiles using olfactometer methods. Extraction methods applied were maceration and continuous extraction followed by concentration. Bioassay on the parasitoid orientation behavior was done by using Y-tube olfactometer and every lot of bioassay using 30 parasitoid females with 3 replicates. The results showed that the volatile compounds of extract of infested rice stem by BPH eggs comprise of 16 components. The highest proportion of the components extracted with acetone is 2-Pentanone, 4-hydroxy-4-methyl (19,9%), while those with n-hexane is Hexanedioic acid, dioctyl ester (65%). A. nilaparvatae showed positive response to the volatiles extracted from infested rice plant by N. lugens eggs. Therefore, the volatiles can be used as an attractant for the egg A. nilaparvatae to support rice pest management.
Co-Authors Abda Abda Adilah Aliyatulmuna Afis Baghiz Syafruddin Cyntia Nilasari Danar Danar Danar, Danar Darmawan, Fairuz Indah Deni Ainur Rokhim Dika Putra Wijaya Dwi Adi SUNARTO Fitriyani, Citra Eka Hanumi Oktiyani Rusdi Hasan, Muhammad Ainur Hayuni Retno Widarti Hilda Srivaliana Ilham Kholilah, Khusnul Kurnia, Nur Laili Eviana Indah Kusumaningrum, Irma Kartika Maghfiroh, Ainun Mahgfiro, Intan Dini Maritza Verda Zahirah Meyga Evi Ferama Sari Munzil Nazriati Nazriati dkk. NURINDAH NURINDAH Nuzulia Qur'ani Putri, Ghaitsa Zahira Shofa Pradana Putri, Nasywa Alifia Sandi Siti Marfuah, Siti SITI MUSLIMAH SUJAK SUJAK, SUJAK Surjani Wonorahardjo Wijaya, Dika Putra Yudhi Utomo Zalfa Adhya Rachmanita