English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Decreasing the concentration of pollutants in wastewater is a necessary issue particularly in the third-world countries. Mercury is known as one of the most important metal contaminants with harmful impacts on the environment. The present work is based on the lab-scale Hg elimination from synthetic wastewater. For this purpose, adsorption application in continuous mode has been chosen and a modified activated carbon which is sulphurised via dimethyl-disulphide was applied as adsorbent. Thus, the original activated carbon performance in Hg 2+  adsorption was compared with the sulphurised sorbent. Investigation of the dynamic behaviour of adsorption fixed bed system which is highly demanded prior to industrialisation, was studied in the present work to predict the mass transfer coefficients and diffusional properties of adsorbent-adsorbate system. Therefore, a diffusional model namely Axial-dispersion Film Pore-Surface Diffusion model including all the main mass transfer mechanisms in porous beds was implemented. Apart from the mathematical model, one of the most common shortcut approaches (Thomas model) was applied to describe the adsorption behaviour in fixed beds for comparison with the mathematical model results. Based on the Thomas model and experimental results, several important properties of both adsorbate/adsorbent system such as equilibrium adsorption capacity and exhaustion rate were calculated and explained. According to the results of mathematical modelling, the factors and mechanisms with the lowest degree of importance were determined in each system, and the more appropriate/simpler mathematical models were suggested.

Semiempirical investigation of Hg adsorption process in a continuous mode