Fixed-bed column for phosphate adsorption combining experimental observation, mathematical simulation, and statistics: Classical and Bayesian

Integrated fabrication of CMC@UiO-66–NH2@PEI composite adsorbents for efficient batch and dynamic phosphate capture

“…However, in such instances, the mass transfer resistance in the outer membrane of the adsorbent surface tends to decrease, resulting in a reduced time required to reach saturation. 52 Based on Table S2,† we observed that the Thomas model provided a more accurate prediction of the breakthrough curve, with a higher correlation coefficient ( R 2 ).…”

Analytical Perspective and Modeling of Breakthrough Curves for a Fixed-Bed Column of Modified Dolomite by Calcination and Ultrasound for Phosphate Immobilization: Experimental Design, Bayesian Statistics, and Data Prediction

“…The adsorbents were placed between filter paper, cotton (0.2 g), and glass spheres (10 g) in accordance with the approach suggested by Jurado-Davila et al Using a peristaltic pump (MS Tecnopon BP 200), the phosphate solution was pumped upflow through the column at a predetermined flow rate. Each experiment was carried out at 298 K and pH 8.5, which is the solution’s natural pH.…”

“…Continuous adsorption experiments are generally performed to investigate the effects of certain parameters on the process of pollutant removal, such as flow rate, bed depth, and initial concentration. − Continuous adsorption has several advantages over batch adsorption, these being: (I) can treat a constant flow of water, allowing for a higher treatment capacity; (II) the adsorbent can be used multiple times, making it more efficient than batch adsorption; (III) it allows for more consistent treatment quality, as the process can be optimized and monitored continuously; (IV) it can be faster than batch adsorption, as the contact time between the adsorbent and the water can be adjusted by varying the flow rate and the length of the column; and (V) it can be easily scaled up to treat larger volumes. − However, continuous adsorption has disadvantages, such as the optimization to use on a pilot scale and its operational conditions, which need many experiments in order to be implemented; therefore, the operational cost is relatively high . Thus, to solve this problem, the Bayesian technique provides a statistical analysis of the parameters, with a more reliable estimation, and can generate a prediction of the breakthrough curves, making the system scale-up more affordable …”

Superior Removal of Vanadium(V) from Simulated Groundwater with a Fe-Based Metal–Organic Framework Immobilized on Cotton Fibers

“…Fixed-bed column tests were conducted to evaluate the prospective widespread utilization of actual wastewater treatment. 40 The corresponding mass of MC (the actual immobilized MIL-88A(Fe) being 200 mg) was placed in an acrylic tube measuring 240 mm in length and 24 mm in diameter. The rest of the tube was filled and compacted with raw cotton fibers.…”