Biosorption of Indigo Carmine onto Duck Egg White-Modified Longan Peel Biosorbent: Effect of Particle Size and Contact Time. EKSAKTA [Internet]. 2026 Apr. 30 [cited 2026 Aug. 2];27(02):155-66. Available from: https://eksakta.ppj.unp.ac.id/index.php/eksakta/article/view/665