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All Journal AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment)
Refilda Refilda
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Andalas University, Padang, West Sumatra 25163, Indonesia
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education Energy Environmental Science

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Optimization of Crystal Violet Adsorption onto Black Soldier Fly Pupae-Modified Avocado Seed Adsorbent Using Response Surface Methodology Rahmiana Zein; Bagas Sandy Nugroho; Refilda Refilda
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 3 (2026)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v10i3.1321

Abstract

Crystal violet (CV) is a cationic dye widely used in various industrial applications, and its presence in the environment poses a potential risk to water quality. This study aimed to optimize the CV adsorption capability of a Black Soldier Fly pupae-modified avocado seed adsorbent (AS-BSF) using a Response Surface Methodology (RSM) with a Box-Behnken design (BBD). The quadratic model was statistically significant (p < 0.0001), with an R2 of 0.9070 and an adjusted R2 of 0.8139. Initial CV concentration and solution pH were significant linear factors, while all quadratic terms also showed significant effects on adsorption capacity. The optimum conditions predicted by the model were pH 7.75, initial concentration of 1522.38 mg L-1, contact time of 46.83 min, and heating adsorbent of 47.93°C, yielding a predicted adsorption capacity of 166.916 mg g-1 and a desirability value of 0.874. Experimental validation under the optimized conditions yielded an adsorption capacity of 169.114 mg g-1. These results demonstrate that RSM-BBD is effective for modeling and optimizing the CV adsorption capacity of the AS-BSF adsorbent. Contribution to Sustainable Development Goals (SDGs):SDG 6: Clean Water and SanitationSDG 12: Responsible Consumption and ProductionSDG 9: Industry, Innovation and Infrastructure
Co-Authors Bagas Sandy Nugroho Rahmiana Zein