The design of a bench‐scale adsorbent column based on nanoclay‐loaded electrospun fiber membrane for the removal of arsenic in wastewater

Abstract

This study presents a bench‐scale study on the dynamic removal of arsenic from wastewater by an adsorption membrane consisting of a polycaprolactone matrix with iron‐intercalated montmorillonite filler. A 2K factorial design of experiment was employed to study the effect of different adsorption parameters; namely, flow rate, initial influent concentration, and thickness of adsorbent sheets on breakthrough time. Longer breakthrough times were associated with low flow rates, low initial influent concentrations, and thick nanofiber membrane. The bed depth service time (BDST) approach was used to model adsorption kinetics. An empirical equation for predicting service time of the adsorbent membrane was obtained and was used to design the bench‐scale column. The performance of the adsorption column was accurately predicted by the BDST model. This practical, nanocomposite‐based adsorption column offers a promising alternative wastewater treatment for addressing arsenic contamination in water.

Polycaprolactone Composites/Blends and Their Applications Especially in Water Treatment

“…Followi Hg(II) chelation, both mobile and immobilized NF06 carried out FRET via a ring-op mechanism. Since the thiorhodamine-6 G acceptor stayed in a cyclic spirolactam in t The dynamic elimination of arsenic from an aqueous medium with an adsorption membrane composed of an iron-intercalated montmorillonite-filled PCL matrix (Fe-MMT/PCL) was performed by Pena et al [131]. According to parametric studies, longer breakthrough times were associated with a low flow rate (20 mL•min −1 ), a low starting inlet concentration (2 ppm), and a thick nanofiber membrane (0.75 mm).…”

Nano Clay-Polymer Composite for Water Treatment

“…The removal of As from the drinking water through less complex, ecofriendly and cost effective method is a major challenge [56]. Arsenic has been significantly removed from the water through modified clay composites such as nanoclay-loaded electrospun fiber membrane,organically modified smectite adsorbents and hydroxyiron modified montmorillonite nanoclay [57][58][59][60]. Hexavalent chromium pollution through mining, effluents of ferrochrome, dye an tanneries are another most concerned issue amongst scientist [60].…”

Green Electrospun Membranes Based on Chitosan/Amino-Functionalized Nanoclay Composite Fibers for Cationic Dye Removal: Synthesis and Kinetic Studies

“…They reported that a low flow rate of wastewater, low initial influent concentration, and thick nanofiber membrane resulted in a longer breakthrough time. The results showed that the breakthrough time was 201.50 min for an adsorption test with a 20 mL/min flow rate and an initial arsenic concentration of 2 ppm . Bansal and Purwar (2021) fabricated polyacrylonitrile/MMT and polyacrylonitrile/ZnO-MMT electrospun nanofibrous nanocomposites as adsorbents.…”