Activation of Firmiana Simplex leaf and the enhanced Pb(II) adsorption performance: Equilibrium and kinetic studies

Removal of copper(II) ions by a biosorbent—Cinnamomum camphora leaves powder

“…The q e increases rapidly with increasing pH from 2 to 3, and then increases slowly with further increase in pH. Similar variations of q e versus pH have been earlier recorded in study on heavy metals adsorption onto some leaf biosorbents [19,29,31].…”

Manganese removal from aqueous solution using a thermally decomposed leaf

“…Adsorbents for heavy metals have been intensively investigated recently [11][12][13][14][15][16]. Efforts are devoted to decrease the cost of the adsorbent as well as to improve the adsorption affinity and adsorption capacity.…”

“…Since Mn(II) is a reductive reagent and prone to be changed in chemical state, the relevant adsorption mechanism on the prepared adsorbent might be different from that of the stable heavy metals. Amine was reported abundant in leaf acting as a major sorption site for heavy metals [15]. However, few researches are available as to the possibility of Mn(II) adsorption on this functional group.…”

Adsorption of Pb(II) from Solution using Peanut Shell as Biosorbent in the Presence of Amino Acid and Sodium Chloride

“…Based on the attribution of peaks in Fig. 1, adsorption at 3440 and 3410 cm −1 represents the stretching vibration of the hydroxyl groups (Li et al 2009). The peaks at 1630 and 1650 cm −1 can be assigned to C=O stretching (Adiana and Mazura 2011;Villena et al 2000).…”