Baskar S, Sidhaarth K R Aswin, Mangaleshwaran L, Lakkaboyana Sivarama Krishna, Trilaksana Herri, Kalla Reddi Mohan Naidu, Lee Jaewoong, Atanase Leonard I, Kazi Mohsin, Praveenkumar Seepana
Department of Civil Engineering, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Chennai, Tamil Nadu, 600062, India.
Department of Civil Engineering, Alagappa Chettiar Government College of Engineering and Technology, Chennai, Tamil Nadu, India.
Sci Rep. 2025 Jan 2;15(1):32. doi: 10.1038/s41598-024-82267-0.
The present investigation assessed the viability of utilizing a powdered clam shell in continuous adsorption to eliminate nickel ions from simulated wastewater. The breakthrough curves (BTC) were analyzed by altering the Q (inlet flow rate) in a glass column (ID 5 cm, H 35 cm) with a multi-port and filled with the powdered clamshell adsorbent (PCSA). The PCSA's nickel adsorption efficiency was maximum (87.68%) with Q = 8 mL/min at a bed length (H) of 25 cm with 1.05 mg/g adsorption capacity. Moreover, the mass transfer zone (MTZ) and idle bed length (L) were estimated from the corresponding BTC. The values of MTZ and L demonstrated fluctuations in response to changes in bed length, suggesting the presence of non-ideal circumstances. The validity of the Thomas model for predicting column dynamics was established, and the associated model parameters were assessed. Additionally, the parameters of the BDST model were assessed in order to aid in calculating the sufficient depth for a packed bed column (PBC) while scaling up. Therefore, a metal removal process from industrial effluent can be efficiently achieved by utilizing a PBC of powdered clamshell adsorbent.
本研究评估了利用粉末状蛤壳进行连续吸附以去除模拟废水中镍离子的可行性。通过在内径5厘米、高35厘米的玻璃柱中改变Q（进水流量）来分析穿透曲线（BTC），该玻璃柱有多个端口，并填充有粉末状蛤壳吸附剂（PCSA）。在床层长度（H）为25厘米、吸附容量为1.05毫克/克的情况下，当Q = 8毫升/分钟时，PCSA对镍的吸附效率最高（87.68%）。此外，从相应的BTC估算了传质区（MTZ）和空床长度（L）。MTZ和L的值随床层长度的变化而波动，表明存在非理想情况。建立了托马斯模型预测柱动力学的有效性，并评估了相关模型参数。此外，评估了BDST模型的参数，以帮助在放大过程中计算填充床柱（PBC）的足够深度。因此，利用粉末状蛤壳吸附剂的PBC可以有效地实现工业废水中金属的去除过程。
