评价黑虻壳聚糖去除废水中刚果红的效率和可扩展性

Q1 Environmental Science

Bioresource Technology Reports Pub Date : 2025-05-03 DOI:10.1016/j.biteb.2025.102132

Linda Hevira , Joshua O. Ighalo , Dewi Sondari , Arzqa Sabila Hanifah

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引用次数: 0

摘要

研究了从黑兵蝇（BSF）蜕皮中提取壳聚糖用于废水中刚果红（CR）去除的工艺，并对其成本效益和可扩展性进行了评价。通过脱矿、脱蛋白、脱乙酰等步骤提取壳聚糖。采用SEM、EDS、FT-IR、N2物理吸附、TGA和XRD对壳聚糖进行了表征。确定了CR吸附的最佳条件为pH为6，初始浓度为265 mg/L，接触时间为45 min。壳聚糖的最大吸附量为110.63 mg/g。吸附过程遵循Langmuir等温线，为准二级吸附动力学模型。热力学分析表明，该反应在298 ~ 318k范围内为吸热自发反应。30%的甘油可有效解吸，壳聚糖的解吸效果可维持3个循环。实际废水的总体去除率达到96%，吸附剂成本为0.33美元/g CR。

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Evaluating the efficiency and scalability of chitosan from black soldier fly in removing Congo red from wastewater

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Evaluating the efficiency and scalability of chitosan from black soldier fly in removing Congo red from wastewater

This study investigated chitosan extracted from black soldier fly (BSF) exuviae for Congo Red (CR) removal from wastewater and assessed its cost-effectiveness and scalability. BSF chitosan was extracted through a multi-step process comprising demineralization, deproteinization, and deacetylation. The resulting chitosan underwent characterization using SEM, EDS, FT-IR, N₂ physisorption, TGA, and XRD. Optimal conditions for CR adsorption were determined to be pH 6, initial concentration of 265 mg/L and 45 min contact time. Chitosan derived from BSF demonstrated a maximum adsorption capacity of 110.63 mg/g. The adsorption followed the Langmuir isotherm suggesting monolayer adsorption, and pseudo-second order kinetics model. Thermodynamic analysis demonstrated that the process was endothermic and spontaneous between 298 and 318 K. Desorption was effectively achieved using 30 % glycerol, with the chitosan maintaining efficacy for three cycles. The overall removal rate in real wastewater attained 96 %, with an adsorbent cost of 0.33 USD/g CR.

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