Article Per Year (5 Year)
p-Index From 2021 - 2026
4.376
P-Index
This Author published in this journals
All Journal Jurnal Ilmu Informasi Perpustakaan dan Kearsipan Media Komunikasi Geografi Jurnal Agro Wiralodra Economic Education and Entrepreneurship Journal Edukasi IPS Journal of Industrial Engineering & Management Research (JIEMAR) Jurnal Sistem Informasi GOVERNANCE: Jurnal Ilmiah Kajian Politik Lokal dan Pembangunan Jurnal Relevansi : Ekonomi, Manajemen dan Bisnis Jurnal Penelitian Geografi (JPG) Balanca : Jurnal Ekonomi dan Bisnis Islam Jurnal Fisioterapi dan Kesehatan Indonesia Jurnal Teknik Kimia dan Lingkungan Indonesian Journal of Multidisciplinary on Social and Technology Journal Learning Geography Jurnal Pengabdian Sosial EduInovasi: Journal of Basic Educational Studies ENCOMMUNICATION: Journal of Communication Studies Journal of Environment and Geography Education
Dian Utami, Dian
Unknown Affiliation
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health Social Sciences Other

Published : 32 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 32 Documents
Search

 1   2   3   4 
Hybrid Composite of Biomass-Derived Activated Carbon and Mg/Al Hydrotalcite for Caffeine Adsorption from Aqueous Solutions Nofiyanti, Estin; Ghofur, Noer Laelly Barorroh Taufik Abdul; Utami, Dian
Jurnal Teknik Kimia dan Lingkungan Vol. 10 No. 1 (2026): April 2026
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jtkl.v10i1.8795

Abstract

This study investigated the adsorption performance of activated carbon (AC) derived from jengkol (Pithecellobium jiringa) peel and its composites with Mg/Al hydrotalcite (HT) for caffeine removal from aqueous solutions. The adsorbents were characterized using FTIR, XRD, and SEM-EDX, confirming the presence of –OH groups, M–O–M bonding, and layered porous morphology. Batch adsorption experiments evaluated the effects of contact time, pH, and initial concentration. AC showed the highest removal efficiency (96.44% at 3 ppm), while ACHT 12 demonstrated stable performance at moderate concentrations and fit well to the Langmuir isotherm (R2 = 0.9609) and pseudo-second-order kinetics (R2 = 0.9912). ACHT 21 followed the Freundlich model (R2 = 0.7758), indicating heterogeneous multilayer adsorption. Optimal adsorption occurred in acidic conditions (pH 3–5), which reflects the characteristics of pharmaceutical wastewater. The results confirm the potential of jengkol-based adsorbents as low-cost, sustainable alternatives for caffeine-contaminated water treatment.
Constraints in Geographic Information Systems Learning Across Senior High Schools in Metro City Alifia, Lisa Nur; Utami, Dian; Wijaya, Nyokro Mukti; Istiawati, Novia Fitri
Journal Learning Geography Vol. 7 No. 1 (2026): Journal Learning Geography (JLG)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jlglg7i1.162

Abstract

The study aims to analyze the constraints in the implementation of Geographic Information Systems (GIS) learning across three senior high schools in Metro City. A qualitative approach with a multi-site design was employed. Data were collected through interviews, observations, and documentation, then analyzed using cross-site analysis techniques. The findings indicate that teachers generally possess basic conceptual knowledge but face limitations in technical skills and access to continuous training. As a result, instructional strategies remain largely lecture-based, with minimal integration of technology. Students experience difficulties in understanding GIS concepts and show relatively low engagement due to the lack of practical activities. In addition, limitations in facilities, software availability, infrastructure, and institutional support further hinder effective implementation. This study concludes that GIS learning challenges are systemic and require integrated efforts, including improving teacher competence, enhancing training programs, promoting interactive learning strategies, and strengthening institutional support.
Co-Authors A.A. Ketut Agung Cahyawan W Achirda, Nur Achmad, Wahyu Nopilia Achwan, Achwan Afrilia, Ayu Alfia Rahmi Alifia, Lisa Nur Angelita, Ika Apryliani , Apryliani Usman Ardila, Evi Arief, Muhammad Aringga, Rio Ario, Firman Aziza, Sofia Nur Danar Wicaksono, Danar Dewi, Fitria Melinia Dian Novitasari Edi Haryono Edy Haryono Estin Nofiyanti Fani, Vido Repan Gio Ghofur, Noer Laelly Barorroh Taufik Abdul Halimah, Supi Nur Harahap, Farid Mauli Hastuti Hastuti Herlina, Meri Indriani, Julia Irma Lusi Nugraheni Ishfa Naisila Istiawati, Novia Fitri Jaya, M.Thoha B Sampurna Junita, Reka Karunia, Rizki Kustiawan, Eko Maharani, Feby Manik, Tamara Paulina Margianto, Angga Marsun, Marsun Martanti Martanti Mubarok, Robby Anzilni Nani Agustina Nani Suwarni Nurazizah, Adila Nurhaliza Octavia, Ismi Ogsundari, Adelia Pargito Pargito Pratiwi, Shinta Putri Yasmina munawwarah Qaila Thahira Rahmayani, Vera Ramadhania, Salsabila Risaundi, Dodi Dwi Riyanto Riyanto Runtuwene, Dwi Windi Salsabilla, Annisa Sari, Diah Mustika Sari, Zulviana Latifa Siahaan, Julius Sri Wulandari Sugeng Widodo Suwandi Suwandi Wijaya, Nyokro Mukti Wijayanto, Wahid Hadi Wirna Yakin, Nurman Yuliansyah , Yuliansyah Zauwatun Nufus Zulkarnain Zulkarnain Zulkarnain