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All Journal Abdimas Indonesian Journal Jurnal Teknik Kimia dan Lingkungan
Ghofur, Noer Laelly Barorroh Taufik Abdul
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Religion Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences

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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.
Implementasi Satuan Pendidikan Aman Bencana (SPAB) dalam Meningkatkan Kesiapsiagaan Guru PAUD di Kabupaten Pangandaran Hudha Anggarasari, Nandhini; Nofiyanti, Estin; Ghofur, Noer Laelly Barorroh Taufik Abdul
Abdimas Indonesian Journal Vol. 6 No. 1 (2026)
Publisher : Civiliza Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59525/aij.1547

Abstract

Pangandaran Regency is a region with a relatively high level of disaster vulnerability, thus requiring systematic efforts to improve the preparedness of teachers and early childhood education (PAUD) communities. This study aims to implement the Disaster Safe Education Unit (SPAB) program to improve the preparedness of PAUD teachers and Posyandu cadres in Pangandaran Regency. The program is implemented through a series of activities including SPAB socialization, education on early detection assessments of child development, identification of disaster risk areas, creation of evacuation maps, formation of evacuation teams, development of evacuation SOPs, and disaster simulations. The study involved 64 participants consisting of PAUD teachers and Posyandu cadres in Pangandaran Regency. The results showed a significant increase in SPAB understanding (from 14% to 98%), mastery of child development assessments (95%), understanding of disaster risk areas (from 75% to 98%), and teacher ability in educating children about disasters (increasing from 95% with no experience to 45% able to practice). The SPAB program has proven effective in building awareness and preparedness for disasters at the early childhood education level. The successful implementation was supported by multi-stakeholder engagement, local policy support, and a strategic partnership with the Regional Disaster Management Agency. This program can serve as a sustainable model for strengthening disaster literacy in early childhood and the resilience of educational communities
Co-Authors Dian Utami, Dian Estin Nofiyanti Hudha Anggarasari, Nandhini