Lead adsorption from aqueous solutions by a granular adsorbent prepared from phoenix tree leaves

RSC Advances ◽  
2016 ◽  
Vol 6 (30) ◽  
pp. 25393-25400 ◽  
Author(s):  
Sha Liang ◽  
Nan Ye ◽  
Yuchen Hu ◽  
Yafei Shi ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Adsorption Kinetics ◽  
Tree Leaves ◽  
Lead Adsorption ◽  
Leaf Powder ◽  
Tree Leaf ◽  
Kinetics And Isotherms ◽  
Granular Adsorbent

In this study, a granular adsorbent was prepared from phoenix tree leaf powder with bentonite as the binder. The adsorption kinetics and isotherms of Pb2+ removal by the 500 °C-calcined granular adsorbent were studied by various models.

Removal of textile dyes from aqueous solutions by lignin and its derivative charcoals: characterization, adsorption kinetics and isotherms

2017 ◽  
Vol 81 ◽  
pp. 265-273 ◽  
Author(s):  
Maryam El Marouani ◽  
Laila El Fakir ◽  
Samir Men La Yakhaf ◽  
Nadia El Hrech ◽  
Abdelmalek Dahchour ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Adsorption Kinetics ◽  
Textile Dyes ◽  
Kinetics And Isotherms

scholarly journals Feasibility Of Metal Biosorption using Gulmohar (Delonix Regia) Tree Leaves Power: Effect of Biosorption Structure on Adsorption Isotherms and Kinetics

2019 ◽  
Vol 8 (4) ◽  
pp. 1527-1531
Keyword(s):  
Tree Leaves ◽  
Sorption Equilibrium ◽  
Efficient Removal ◽  
Biosorption Process ◽  
Metal Biosorption ◽  
Adsorption Isotherms And Kinetics ◽  
Leaf Powder ◽  
Power Effect ◽  
Experimental Values ◽  
Tree Leaf

In this work, biosorption process was commited for expulsion of metals using Gulmohar tree leaf powder since Gulmohar tree leaf powder (GTLP) is a efficient biosorbent for treating Cr(VI) ions. The optimum values observed for efficient removal of Cr(VI) ions were pH-2, concentration for Cr(VI) biosorption by GTLP- 20 ppm and biosorbent dosage-0.1 g. The symmetry was attained at 75 min of acquaintance time. Experimental values were depicted with Freundlich and Langmuir models. Sorption equilibrium exhibited good robust to Langmuir model (R2 = 0.991).

scholarly journals Removal of Arsenic(III) from Aqueous Solution Using Metal Organic Framework-Graphene Oxide Nanocomposite

Nanomaterials ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 1062 ◽  
Author(s):  
Tonoy Chowdhury ◽  
Lei Zhang ◽  
Junqing Zhang ◽  
Srijan Aggarwal
Keyword(s):  
Graphene Oxide ◽  
Aqueous Solutions ◽  
Adsorption Kinetics ◽  
Metal Organic Framework ◽  
Bet Surface Area ◽  
Isotherm Models ◽  
Solution Ph ◽  
Adsorption Kinetics And Isotherm ◽  
Removal Of Arsenic ◽  
Kinetics And Isotherms

MIL-53(Al)-graphene oxide (GO) nanocomposites of different GO to MIL-53(Al) mass ratios (1% to 25% GO) were synthesized and tested for removal of arsenite (As(III)), which is a well-known groundwater contaminant. The properties of MIL-53(Al)-GO nanocomposites were characterized using X-ray Diffraction (XRD), Fourier Transform Infrared (FT-IR) Spectroscopy, Brunauer-Emmett-Teller (BET) surface area measurements, and Scanning Electron Microscopy (SEM). Batch experiments were performed on MIL-53(Al)-GO nanocomposites for As(III) adsorption in aqueous solutions to investigate adsorption kinetics and isotherm behavior under varying environmental conditions. The effects of solution pH (2 to 11), initial As(III) concentrations (10–110 mg/L), adsorbent dosage (0.2–3.0 g/L), and temperature (298–318 K) on As(III) adsorption were investigated. MIL-53(Al)-GO nanocomposites showed higher adsorption of As(III) than pristine MIL-53(Al) and GO individually. As (III) removal was optimized at a ratio of 3% GO in the MIL-53(Al)-GO nanocomposite, with an adsorption capacity of 65 mg/g. The adsorption kinetics and isotherms followed pseudo-second-order and Langmuir isotherm models, respectively. Overall, these results suggest that MIL-53(Al)-GO nanocomposite holds a significant promise for use in the remediation of As (III) from groundwater and other aqueous solutions.

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