Department of Chemical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India.
Department of Chemical Engineering, Indian Institute of Petroleum and Energy (IIPE), Visakhapatnam, Andhra Pradesh 530003, India.
Bioresour Technol. 2023 Nov;387:129614. doi: 10.1016/j.biortech.2023.129614. Epub 2023 Aug 3.
This study investigated the degradation of Acid Blue 113 (AB 113) dye using Klebsiella grimontii entrapped Graphene Oxide-Calcium Alginate Hydrogel beads (KG-GO-CA) in a Fluidized Bed Bioreactor (FBBR) under varying inlet loading rates. The minimum fluidization velocity of the KG-GO-CA hydrogel beads in FBBR was found to be 0.15 mm/s. The KG-GO-CA beads showed a maximum removal efficiency of 94.6% at an inlet flow rate of 20 mL/h over 15 days. Reusability studies indicated a removal efficiency of 70.6 ± 2.5% for AB 113 after the 12 cycle. Langmuir adsorption isotherm showed the best fit (R = 0.98724) with model parameters of Q (203.83 mg/g) and K (0.0101 L/g). The study also confirmed that treated wastewater was more environmentally safe for domestic and commercial uses than untreated wastewater. The research highlights the potential use of KG-GO-CA hydrogel beads for removing dyes from wastewater.
本研究采用载有 Klebsiella grimontii 的石墨烯氧化物-海藻酸钠水凝胶珠（KG-GO-CA）在流化床生物反应器（FBBR）中，在不同入口负载率下对酸性蓝 113（AB 113）染料进行降解。在 FBBR 中，KG-GO-CA 水凝胶珠的最小流化速度被发现为 0.15 mm/s。在 15 天内，入口流速为 20 mL/h 时，KG-GO-CA 珠的最大去除效率达到 94.6%。重复使用研究表明，AB 113 在 12 个循环后去除效率为 70.6 ± 2.5%。Langmuir 吸附等温线显示出最佳拟合（R=0.98724），模型参数为 Q（203.83 mg/g）和 K（0.0101 L/g）。研究还证实，处理后的废水比未经处理的废水更适合家庭和商业用途，环境更安全。该研究强调了 KG-GO-CA 水凝胶珠在从废水中去除染料方面的潜在用途。
