Biosorption of palladium(II) from aqueous solution by grafting chitosan on persimmon tannin extract

WITHDRAWN: Effects of Persimmon Tannin-Aloe Vera Composite on Cytotoxic Activities, and Radioprotection Against X-rays Irradiated in HepG2 and L02 Cells

“…To ensure that most persimmons can mature normally, some green persimmons are removed; however, this results in substantial losses for persimmon farmers. Green persimmons are rich in tannin [11], and therefore, could be used as a source of tannin.…”

Innovative conditioning of algal-based sorbents: Macro-porous discs for palladium sorption

“…Their physico-chemical stability may be less than that of synthetic resin in harsh environments; however, for mild experimental conditions, biosorbents can be competitive for the recovery of metal ions from dilute effluents. Biosorbents may be obtained from agriculture sub-products [13][14][15][16][17][18], or from marine feed-stock [19]. Biopolymers such as chitosan [20][21][22][23][24], and alginate have been widely investigated for metal sorption [25,26].…”

Recovery of palladium from secondary waste using soluble tannins cross-linkedLagerstroemia speciosaleaves powder

“…A value of ΔH° <25 kJ mol −1 and >40 kJ mol −1 represents physisorption and chemisorption, respectively . The value of ΔH° of 4.3 kJ mol −1 indicates both physisorption and the endothermic nature of Pd(II) sorption on TLS biosorbent . The endothermic behavior is also confirmed from an increase in Q max with increasing temperature.…”

“…43 The value of ΔH ∘ of 4.3 kJ mol −1 indicates both physisorption and the endothermic nature of Pd(II) sorption on TLS biosorbent. 44 The endothermic behavior is also confirmed from an increase in Q max with increasing temperature. The positive value of ΔS ∘ (112 J mol −1 K −1 ) indicates increased randomness during Pd(II) sorption.…”