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网页2011年12月1日 The Cd(II) and Pb(II) ions removal efficiency of the TIC was tested in the light of equilibrium, kinetics and thermodynamics parameters. The monolayer adsorption 网页2015年5月7日 The adsorption kinetics of Pb(II) ions shows that the process fits well with a pseudo-second-order 网页2016年5月1日 The adsorption capacity of Cd(II) ions was the smallest among the four metal ions due to the higher pH values at which Cd(II) hydrolysis begins to occur. The adsorption mechanism of Pb 2+,Cd 2+,Cu 2+ and Ni 2+ on AC/Fe 3 O 4 @SiO 2 –NH 2 could be a combined reaction of chelation and ion-exchange between the functional 网页2023年3月5日 The pH of Pb (II) solution was selected at 5.0 to prevent chemical precipitation phenomena of Pb (II) ions and to guarantee that the removal of Pb (II) ions 网页2021年6月22日 Adsorptive removal of Pb(II) and Cd(II) ions from aqueous solution onto modified Hiswa iron-kaolin clay: Equilibrium and thermodynamic aspects. Chemistry 网页2022年1月15日 The Pb (II) desorption of lead increases with the increasing HNO 3 concentration and is due to H + ion’s replacement of the Pb (II) ions of the groundnut shell, acting like a cation exchanger. The different desorption cycles are shown in Table 7. The effectiveness of the desorption cycle decreases with an increase in the number of cycles. 网页2021年6月13日 The maximum adsorption capacities of Pb(II) and Cd(II) ions were 76.92 and 75.19 (mg/g), respectively. Thermodynamic parameters such as the change of Gibbs free energy, enthalpy and entropy of adsorption were also calculated and it was found that the lead and cadmium ions uptake by modified kaolin clay is endothermic and 网页2020年5月5日 It was observed that q e for Pb(II) was improved from (5.6 to 125 mg/g), (5 to 83.7 mg/g), and (4.3 to 70 mg/g) at 298, 308, and 318 K, respectively with the rise in 网页2023年2月21日 The isotherm modeling assessments illustrated that the sorption of Pb (II) and Cr (VI) was consistent with the Sips model (R2 > 0.99), while the adsorption kinetics 网页2017年1月1日 The removal of Pb (II) ions in solution was consistently observed until equilibrium was not occurring. The results, as displayed in Fig. 5 (c), exhibited that the removal of Pb (II) ions was increased as the contact time increase and the maximum removal (93.42%) of Pb (II) ions occur at within the staring 60 min of contact time. 网页2023年2月21日 The present work introduces a new sorbent, so-called PANI/MIL100(Fe), for removing Pb (II) and Cr (VI) from wastewater. The successful preparation of PANI/MIL100(Fe) was verified via Fourier-transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and 网页2020年5月5日 It was observed that q e for Pb(II) was improved from (5.6 to 125 mg/g), (5 to 83.7 mg/g), and (4.3 to 70 mg/g) at 298, 308, and 318 K, respectively with the rise in Pb(II) ions concentration which may be due to the increase of Pb(II) ions transfer from solution phase to the surface of Fe 3 O 4 @[email protected] nanocomposites. So, more 网页2018年6月1日 An example of this was the adsorption of Pb(II) and Cd(II) ions by a thiol-functionalized MOF named [email protected] (Zhang et al., 2016b). Pb(II) and Cd(II) ions which belong to the soft acid and boundary acid respectively, preferred to bind with the thiol group as a type of soft base in the [email protected] 网页2020年4月5日 The above results disclosed that the RH MW-X could be effectively applied in an extensive pH range for simultaneous removal of Pb(II), Cd(II) and Ni(II) from water. Time-dependent studies were conducted to explore the adsorptive rate of metal ions onto RH MW-X in different systems (Fig. 4). As observed, in unary systems, the adsorption 网页2023年3月5日 The pH of Pb (II) solution was selected at 5.0 to prevent chemical precipitation phenomena of Pb (II) ions and to guarantee that the removal of Pb (II) ions is essentially due to the adsorption method. The optimum pH for the Hg 2+ adsorption is 6.0, which is not the point at which Hg 2+ precipitates. 网页2022年12月18日 ABSTRACT. We present the synthesis of Activated Carbon (AC) by pyrolysis of Banana (Musa Acuminate) Stem Waste (BSW), and the ability of obtained AC for adsorptive removal of Pb(II) ions from water.Importantly, pyrolysis was performed at 750°C for 2.0 h in the presence of high surface area producing chemical activators such 网页2021年5月15日 The heavy metal ions such as Pb (II), Cd (II), and Cu (II) acting as the soft Lewis acid can be rapidly recovered and selectivity captured from the aqueous solution using Fe 3 O 4 /FeMoS 4 /MgAl-LDH which stemmed from the soft Lewis base nature of sulfide in the MoS 4 2− ions. The desirable final concentrations. CRediT authorship 网页The ability of Turkish illitic clay (TIC) in removal of Cd(II) and Pb(II) ions from aqueous solutions has been examined in a batch adsorption process with respect to several experimental conditions including initial solution pH, contact time, initial metal ions concentration, temperature, ionic stre 网页2013年12月1日 Three kinds of membranes incorporated with 5%, 10%, and 15% wt of HMO were used for Cd(II) and Cu(II) removal by Delavar et al. [209] Greater adsorption potential was found for membranes 网页2023年3月1日 Request PDF On Mar 1, 2023, Leqi Shi and others published Efficient removal of Cd(II), Cu(II), and Pb(II) in aqueous solutions by exhausted copper slag supported sulfidized nanoscale zerovalent 网页2022年1月15日 The Pb (II) desorption of lead increases with the increasing HNO 3 concentration and is due to H + ion’s replacement of the Pb (II) ions of the groundnut shell, acting like a cation exchanger. The different desorption cycles are shown in Table 7. The effectiveness of the desorption cycle decreases with an increase in the number of cycles. 网页2022年2月21日 In the case of Pb(II) ions, the removal was slightly decreased on increasing the concentration of CO3 2− ions due to the formation of a lead-carbonate complex which prevents the adsorptive removal of Pb(II) ions ( (Kong et al. 2017)). It is noteworthy that the adsorption of Pb(II) and As(III) ions was greatly affected by phosphate ions. 网页2021年8月9日 Adsorptive removal of heavy metal ions, Cu(II), Cd(II) and Pb(II) from real water samples such as seawater and collected wastewater samples was accomplished using a multistage microcolumn techniques, where the samples were spiked with 2.0–3.0 mg L –1 of metal ions. 网页2020年4月8日 Removal of Cu(II), Cd(II) and Pb(II) ions from aqueous solutions by biochar derived from potassium-rich biomass. J. Clean. Adsorptive removal of phosphate by 网页2023年3月5日 The pH of Pb (II) solution was selected at 5.0 to prevent chemical precipitation phenomena of Pb (II) ions and to guarantee that the removal of Pb (II) ions is essentially due to the adsorption method. The optimum pH for the Hg 2+ adsorption is 6.0, which is not the point at which Hg 2+ precipitates. 网页2022年12月18日 ABSTRACT. We present the synthesis of Activated Carbon (AC) by pyrolysis of Banana (Musa Acuminate) Stem Waste (BSW), and the ability of obtained AC for adsorptive removal of Pb(II) ions from water.Importantly, pyrolysis was performed at 750°C for 2.0 h in the presence of high surface area producing chemical activators such 网页2015年5月7日 Adsorptive Removal of Pb(II) Ions from Aqueous Samples with Amino-Functionalization of Metal–Organic Frameworks MIL-101(Cr) showed a notable adsorption capacity of 177.5 and 146.6 mg/g for 网页2022年10月3日 The adsorptive removal of Pb(II) and Cr(VI) ions from aqueous solution by graphene oxide October 2022 Conference: 22nd edition of the Trends in Nanotechnology International Conference (TNT2022) 网页2022年1月15日 For the conservation of our environment, removing water pollutants from the different wastewater sources is getting critical. This study used a low-cost, green, agricultural waste, Arachis hypogaea’s shell (local name—groundnut shell) to remove Pb(II) ions from an aqueous solution. SEM analyzed surface morphology. FTIR determined 网页In this study, a low-cost granular activated carbon doped with Fe2O3 nanoparticles (Fe–GAC) was prepared via a modified sol-gel technique and utilized for the elimination of lead (Pb(II)) and chromium (Cr(T)) ions from synthetic and actual brackish water. The effect of adsorption parameters on the removal of Pb(II) and Cr(T) ions from 
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