Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal Journal of Green Chemical and Environmental Engineering
Alif Nur Laili Rachmah
Chemical Engineering, Universitas Pattimura, Indonesia
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Environmental Science Materials Science & Nanotechnology

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

Found 2 Documents
Search

 1 
Optimization of Biodegradable Films from Avocado Seed Starch Using Response Surface Methodology Alif Nur Laili Rachmah; Sabrianah Badaruddin; Tamaratritania Citta Trisnantari; Geraldi Rahanra; Ratri Sekaringgalih
Journal of Green Chemical and Environmental Engineering Vol. 2 No. 1 (2026): Journal of Green Chemical and Environmental Engineering
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/jgcee.v2i1.23

Abstract

This study aimed to develop and optimize biodegradable films based on avocado seed starch (Persea americana) using glycerol as a plasticizer and chitosan and carrageenan as fillers. The film formulation was optimized using Response Surface Methodology (RSM) with a Box–Behnken Design to evaluate the effects of formulation variables on biodegradability and mechanical properties. The biodegradability values ranged from 31.93 % to 51.94 %, indicating that all films were biodegradable. Increasing glycerol and carrageenan concentrations significantly increased biodegradability, while higher chitosan concentration improved tensile strength but reduced biodegradability. The optimal formulation was obtained at 2.96 % glycerol, 1.56 % chitosan, and 2.85 % carrageenan, with a predicted biodegradability of 53.11 %. The results indicate a trade-off between mechanical strength and biodegradability, where higher plasticizer content enhances degradation but reduces tensile strength. This study demonstrates that RSM optimization is effective in producing biodegradable films with balanced mechanical and environmental performance, highlighting the potential of avocado seed starch as a sustainable packaging material.
Technical Assessment and Optimization of Off-Gas Cooling in Nickel Matte Pyrometallurgy Based on Carbon Variation Sabrianah Badaruddin; Alif Nur Laili Rachmah; Muhammad Ikhsan Taipabu; Farida Diyah Hapsari; Esther Muatiara Santallum Ekklesia Tibalia
Journal of Green Chemical and Environmental Engineering Vol. 2 No. 1 (2026): Journal of Green Chemical and Environmental Engineering
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/jgcee.v2i1.21

Abstract

Exhaust gas emission management is a critical aspect of pyrometallurgical nickel smelting because it directly affects energy efficiency, operational safety, and overall process sustainability. This study investigates the influence of calcine carbon content on exhaust gas formation and determines the required cooling air volume in an industrial electric furnace operating at approximately 150 tons per hour. The research is based on deterministic mass and energy balance modelling developed from actual operational data obtained from a nickel smelting facility. The analysis quantifies the relationship between carbon oxidation reactions and off-gas generation during the smelting process. Results reveal a strong linear correlation between increasing calcine carbon content and exhaust gas volume. At an average carbon content of 1.96 %, the furnace produces 47,241 Nm³/h of exhaust gas. Under these operating conditions, a cooling air injection of 9,292 Nm³/h is required to reduce the gas temperature from 1000 °C to 800 °C in order to maintain safe furnace operation. The findings demonstrate that precise control of calcine carbon content and optimised cooling air design are essential for improving operational safety and efficiency in nickel smelting. The developed model provides a quantitative basis for designing safer and more efficient industrial off-gas control systems.
Co-Authors Esther Muatiara Santallum Ekklesia Tibalia Farida Diyah Hapsari Geraldi Rahanra Muhammad Ikhsan Taipabu Ratri Sekaringgalih Sabrianah Badaruddin Tamaratritania Citta Trisnantari