Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal JURNAL KIMIA SAINS DAN APLIKASI Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks
Gumilang, Yuza Ahmad
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Engineering Medicine & Pharmacology Social Sciences Other

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Utilization of Shrimp Shell Waste as Nitrogen Source in N-Doped TiO₂ for Degradation of Polyethylene Microplastics Nurhasni, Nurhasni; Izzah, Annisaul; Dwitami, Aisyah Rahma; Gumilang, Yuza Ahmad; Zilfa, Zilfa; Wellia, Diana Vanda
Jurnal Kimia Sains dan Aplikasi Vol 28, No 3 (2025): Volume 28 Issue 3 Year 2025
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.28.3.115-121

Abstract

Microplastic pollution presents a significant challenge globally, posing serious threats to aquatic ecosystems. This study explores the photocatalytic degradation of microplastics in aqueous solutions by applying nitrogen-doped TiO2 (N-TiO2) nanoparticles under visible light. The N-TiO2 nanoparticles were synthesized via the solvothermal method, utilizing chitosan derived from shrimp shell waste as a nitrogen source. The photocatalytic efficacy of the N-TiO2 nanoparticles was assessed for degrading model polyethylene microplastics, illuminated by a 50-watt LED lamp. Characteristic peak shifts in the FTIR absorption spectrum, notably at 3429 cm-1 to lower wavenumbers, and diminished amide I absorption at 1621 cm-1, confirmed the successful extraction of chitosan from shrimp shell waste. The synthesized N-TiO2 nanoparticles were in the pure anatase phase, exhibited a reduced bandgap of 2.97 eV, and showed enhanced absorption in the visible light spectrum (λ=400 – 800 nm) compared to undoped TiO2. The incorporation of nitrogen into the TiO2 matrix was validated by vibration bands at approximately 1035 cm-1 and 535 cm-1, corresponding to the Ti—N and Ti—O—Ti bonds, respectively. Optimal results were attained with TiO2 nanoparticles doped with 50% nitrogen, achieving a degradation rate of approximately 30.45% of a 250 mg/L microplastic solution over 50 hours of visible light exposure—nearly six times more effective than undoped TiO2. This study highlights the sustainable use of shrimp shell waste as a nitrogen source for enhancing TiO2 nanoparticles, showcasing their potential for environmental remediation applications.
Strengthening the Role of Community Health Workers and Digital Innovation in Stunting Prevention in Nagari Dusun Baru Tapan, Pesisir Selatan Regency, West Sumatra Province Masnarivan, Yeffi; Ramadhan, Nugraha; Muchtariza, Suci; Rivan, Yoko Masna; Rasyid, Zul Azizir; Putri, Helga Eka; Gumilang, Yuza Ahmad
Warta Pengabdian Andalas Vol 32 No 4 (2025)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.32.04.489-496.2025

Abstract

Stunting is still a public health problem in Indonesia, particularly in one with less of nutrition and health knowledge. It results in long-term impacts on learning, cognitive development, productivity, and risk of noncommunicable diseases. The relationship between home visits by community health workers and the concomitant effect of digital innovations to prevent stunting can be seen in this study, where it was conducted in Nagari Dusun Baru Tapan, Pesisir Selatan, West Sumatra. These community services were incorporated into the 2025 Community Service Program of Andalas University which included promo-gizi, local processed food processing training and monitoring of nutritional status in toddlers using Android-based application GiziAnakKu. The program was centered around 1,000 days of life as a crucial window period for child development through nutrition, including the practice of exclusive breastfeeding and complementary feeding and balanced diet behaviors. Results from surveillance showed that most of the toddlers possessed acceptable nutrition (85.3%), however, 14.7% were stunted and 8.8% had an increased risk of overnutrition indicating double burden of malnutrition. Attendees appreciated the training and reinforced the value of sustainable community-based intervention. Through empowerment of community health workers and use of digital technology, the present study adds to definitions for comprehensive stunting prevention that can become best practice in similar areas.
Co-Authors Dwitami, Aisyah Rahma Izzah, Annisaul Muchtariza, Suci Nurhasni Nurhasni Putri, Helga Eka Ramadhan, Nugraha Rasyid, Zul Azizir Rivan, Yoko Masna Wellia, Diana Vanda Yeffi Yeffi Masnarivan Zilfa Zilfa