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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

This paper focuses on the adsorption of Pb(II) from aqueous solution on zeolite that was synthesized from biomass ash. A synthesized MCM-41 zeolite marked as MCM-41-S9 was studied as adsorbent Then, adsorption characterization of Pb(II) onto MCM-41-S9 was discussed. Test results showed that optimum conditions for Pb(II) removal were found to be pH 5 to 6, adsorbent dosage 6 g/L of solution and equilibrium time 2 h. The equilibrium adsorption isotherm can be well described by Langmuir adsorption isotherm model. The adsorption capacity of MCM-41-S9 for Pb(II) ions in terms of monolayer adsorption was 34.33 mg . g −1 at initial concentration of 300 mg . L −1 . MCM-41-S9 was adaptive and efficient to removal Pb(II) in the solutions with lower pH value. The change of entropy (ΔS0) and enthalpy (ΔH0) were estimated at 338.5 J. mol −1. K −1 ) and 96.2 kJ . mol −1 respectively; The negative value of Gibbs free energy (ΔG0) indicate feasible spontaneous and endothermic adsorption of Pb(II) on MCM-41-S9. The value of the adsorption activation energy (E), calculated using modified pseudo-second-order kinetics model, was -9.06 kJ . mol −1 and testified the

Isotherm study on adsorption removal of Pb (II) by MCM-41 zeolite synthesized from biomass ash