Ability of iron(III)-loaded carboxylated polyacrylamide-grafted sawdust to remove phosphate ions from aqueous solution and fertilizer industry wastewater: Adsorption kinetics and isotherm studies

2002 ◽  
Vol 84 (13) ◽  
pp. 2541-2553 ◽  
Author(s):  
Maya R. Unnithan ◽  
V. P. Vinod ◽  
T. S. Anirudhan
Keyword(s):  
Aqueous Solution ◽  
Adsorption Kinetics ◽  
Fertilizer Industry ◽  
Phosphate Ions ◽  
Adsorption Kinetics And Isotherm ◽  
Industry Wastewater

scholarly journals Adsorption Characteristics of Phosphate Ions by Pristine, CaCl2 and FeCl3-Activated Biochars Originated from Tangerine Peels

Separations ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 32 ◽  
Author(s):  
Changgil Son ◽  
Wonyeol An ◽  
Geonhee Lee ◽  
Inho Jeong ◽  
Yong-Gu Lee ◽  
...  
Keyword(s):  
Adsorption Kinetics ◽  
Chemical Activation ◽  
Isotherm Models ◽  
Order Model ◽  
Phosphate Ions ◽  
Adsorption Capacities ◽  
Adsorption Isotherm Models ◽  
Endothermic Reactions ◽  
Pseudo Second Order ◽  
Adsorption Kinetics And Isotherm

This study has evaluated the removal efficiencies of phosphate ions (PO43−) using pristine (TB) and chemical-activated tangerine peel biochars. The adsorption kinetics and isotherm presented that the enhanced physicochemical properties of TB surface through the chemical activation with CaCl2 (CTB) and FeCl3 (FTB) were helpful in the adsorption capacities of PO43− (equilibrium adsorption capacity: FTB (1.655 mg g−1) > CTB (0.354 mg g−1) > TB (0.104 mg g−1)). The adsorption kinetics results revealed that PO43− removal by TB, CTB, and FTB was well fitted with the pseudo-second-order model (R2 = 0.999) than the pseudo-first-order model (R2 ≥ 0.929). The adsorption isotherm models showed that the Freundlich equation was suitable for PO43− removal by TB (R2 = 0.975) and CTB (R2 = 0.955). In contrast, the Langmuir equation was proper for PO43− removal by FTB (R2 = 0.987). The PO43− removal efficiency of CTB and FTB decreased with the ionic strength increased due to the compression of the electrical double layer on the CTB and FTB surfaces. Besides, the PO43− adsorptions by TB, CTB, and FTB were spontaneous endothermic reactions. These findings demonstrated FTB was the most promising method for removing PO43− in waters.

scholarly journals Lignocellulose-Based Superabsorbent Polymer Gel Crosslinked with Magnesium Aluminum Silicate for Highly Removal of Zn (II) from Aqueous Solution

Polymers ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 4161
Author(s):  
Yuhong An ◽  
Wanqi Zhang ◽  
Hui Liu ◽  
Yuan Zhong ◽  
Zichu Hu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adsorption Kinetics ◽  
Nitrogen Adsorption ◽  
Aluminum Silicate ◽  
Maximum Adsorption Capacity ◽  
Polymer Gel ◽  
Adsorption Effect ◽  
Magnesium Aluminum Silicate ◽  
Initial Adsorption ◽  
Adsorption Kinetics And Isotherm

Lignocellulose (LCE) was ultrasonically treated and intercalated into magnesium aluminum silicate (MOT) clay to prepare a nano-lignocellulose magnesium aluminum silicate polymer gel (nano-LCE-MOT) for the removal of Zn (II) from aqueous solution. The product was characterised using nitrogen adsorption/desorption isotherm measurements, Fourier-transform infrared spectroscopy, scanning electron microscopy and energy-dispersive X-ray spectroscopy. The conditions for the adsorption of Zn (II) on nano-LCE-MOT were screened, and adsorption kinetics and isotherm model analysis were carried out to explore the adsorption mechanism and achieve the optimal adsorption of Zn (II). Optimal adsorption was achieved at an initial Zn (II) concentration of 800 mg/L at 60 °C in 160 min at a pH of 4.52. The adsorption kinetics were explored using a pseudo-second-order model, with the isotherm adsorption equilibrium found to conform to the Langmuir model. The maximum adsorption capacity of the nano-LCE-MOT polymer gel toward Zn (II) is 513.48 mg/g. The materials with adsorbed Zn (II) were desorbed using different media, with HCl found to be the most ideal medium to desorb Zn (II). The optimal desorption of Zn (II) was achieved in 0.08 mol/L HCl solution at 65 °C in 60 min. Under these conditions, Zn (II) was almost completely desorbed from the adsorbents, with the adsorption effect after cycling being slightly different from that of the initial adsorption.

Adsorption of Ni2+ in aqueous solution by KMnO4 modified biomass: investigation on adsorption kinetics and modification mechanism

2021 ◽  
pp. 1-12
Author(s):  
Yuxing Tong ◽  
Qunshan Yan ◽  
Song Gao ◽  
Bin Xiong ◽  
Xiangbing Tang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adsorption Kinetics

scholarly journals Adsorption of Phosphate Ions from Aqueous Solution of Nickel Hydroxides Calcined at Different Temperatures

2014 ◽  
Vol 12 (0) ◽  
pp. 404-409 ◽  
Author(s):  
Fumihiko Ogata ◽  
Daisuke Imai ◽  
Megumu Toda ◽  
Masashi Otani ◽  
Naohito Kawasaki
Keyword(s):  
Aqueous Solution ◽  
Phosphate Ions ◽  
Different Temperatures

Adsorption Kinetics of a Hydrophobic−Hydrophilic Diblock Polyelectrolyte at the Solid−Aqueous Solution Interface:  A Slow Birth and Fast Growth Process

2000 ◽  
Vol 33 (16) ◽  
pp. 6051-6059 ◽  
Author(s):  
T. Abraham ◽  
S. Giasson ◽  
J. F. Gohy ◽  
R. Jérôme ◽  
B. Müller ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adsorption Kinetics ◽  
Growth Process ◽  
Fast Growth ◽  
Solution Interface ◽  
Kinetics Of
Sign in / Sign up

Export Citation Format

Share Document