![The use of protonated Sargassum muticum as biosorbent for cadmium removal in a fixed-bed column [An article from: Journal of Hazardous Materials]](https://www.ebooknetworking.net/books/B00/0P6/bigB000P6OVHC.jpg)
The use of protonated Sargassum muticum as biosorbent for cadmium removal in a fixed-bed column [An article from: Journal of Hazardous Materials]
Book Details
PublisherElsevier
ISBN / ASINB000P6OVHC
ISBN-13978B000P6OVH6
MarketplaceUnited Kingdom 🇬🇧
Description
This digital document is a journal article from Journal of Hazardous Materials, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
The protonated Sargassum muticum seaweed was studied as a possible biosorbent for cadmium removal in a fixed-bed column. The experiments were conducted in order to determine the effect of flow rate (0.42, 5, 10 and 20mLmin^-^1) and bed height (0.6 and 15.3cm for the lowest flow rate or 7.4, 13 and 16.6cm for the others) on breakthrough curves behaviour. The determined breakthrough and exhaustion times increased with the diminution in flow rate and with the increase in bed height. The maximum cadmium uptake capacity, obtained from the area below adsorbed cadmium concentration versus time curves, was found to remain practically constant with bed depth and flow rate. The bed depth service time (BDST) model was applied to analyse experimental data, determining the characteristic process parameters. The optimal lowest sorbent usage rate was evaluated at 2min contact time and the minimum bed height values necessaries to prevent the effluent solution concentration from exceeding 0.02mgL^-^1 at zero time were 5.3, 6.9 and 7.5cm for flow rates of 5, 10 and 20mLmin^-^1, respectively. Several empirical models proposed in the literature (Bohart-Adams, Yan, Belter and Chu models) were investigated in order to obtain the best fit of column data, describing in a simple manner the breakthrough curves. A correlation between model parameters and the variables implied in the process was attempted.
Description:
The protonated Sargassum muticum seaweed was studied as a possible biosorbent for cadmium removal in a fixed-bed column. The experiments were conducted in order to determine the effect of flow rate (0.42, 5, 10 and 20mLmin^-^1) and bed height (0.6 and 15.3cm for the lowest flow rate or 7.4, 13 and 16.6cm for the others) on breakthrough curves behaviour. The determined breakthrough and exhaustion times increased with the diminution in flow rate and with the increase in bed height. The maximum cadmium uptake capacity, obtained from the area below adsorbed cadmium concentration versus time curves, was found to remain practically constant with bed depth and flow rate. The bed depth service time (BDST) model was applied to analyse experimental data, determining the characteristic process parameters. The optimal lowest sorbent usage rate was evaluated at 2min contact time and the minimum bed height values necessaries to prevent the effluent solution concentration from exceeding 0.02mgL^-^1 at zero time were 5.3, 6.9 and 7.5cm for flow rates of 5, 10 and 20mLmin^-^1, respectively. Several empirical models proposed in the literature (Bohart-Adams, Yan, Belter and Chu models) were investigated in order to obtain the best fit of column data, describing in a simple manner the breakthrough curves. A correlation between model parameters and the variables implied in the process was attempted.
