Adsorption Equilibria of Water Vapor on Alumina, Zeolite 13X, and a Zeolite X/Activated Carbon Composite

2003 ◽  
Vol 48 (1) ◽  
pp. 137-141 ◽  
Author(s):  
Jong-Hwa Kim ◽  
Chang-Ha Lee ◽  
Woo-Sik Kim ◽  
Jong-Seok Lee ◽  
Jin-Tae Kim ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Water Vapor ◽  
Carbon Composite ◽  
Zeolite X ◽  
Zeolite 13X ◽  
Adsorption Equilibria

Adsorption Equilibria of CO2on Zeolite 13X and Zeolite X/Activated Carbon Composite

2002 ◽  
Vol 47 (5) ◽  
pp. 1237-1242 ◽  
Author(s):  
Jong-Seok Lee ◽  
Jong-Hwa Kim ◽  
Jin-Tae Kim ◽  
Jeong-Kwon Suh ◽  
Jung-Min Lee ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Composite ◽  
Zeolite X ◽  
Zeolite 13X ◽  
Adsorption Equilibria

scholarly journals Physical Properties of Starch/Powdered Activated Carbon Composite Films

Polymers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 4406
Author(s):  
Anita Kwaśniewska ◽  
Michał Świetlicki ◽  
Adam Prószyński ◽  
Grzegorz Gładyszewski
Keyword(s):  
Mechanical Properties ◽  
Activated Carbon ◽  
Water Vapor ◽  
Water Solubility ◽  
Composite Films ◽  
Water Vapor Permeability ◽  
Barrier Properties ◽  
Carbon Composite ◽  
Powdered Activated Carbon ◽  
Vapor Permeability

In the present study, starch/powdered activated carbon composite films were prepared by incorporating various amounts of powdered activated carbon (PAC)—1–5, 10, and 15 %—into a starch matrix, using the solvent casting method. The effect of PAC addition on the biopolymer film was investigated. The mechanical properties were examined by ultra-nanoindentation, nanoscratch, and micro-tensile tests. Since the mechanical properties of biopolymer films are correlated with their structure, the effect of PAC addition was tested using X-ray diffraction. The surface parameters morphology and wettability were analyzed by atomic force microscopy (AFM) and contact angle measurements. The barrier properties were examined by determining water vapor permeability and the water solubility index. The obtained results did not show a monotonic dependence of the mechanical parameters on PAC content, with the exception of the maximum strain, which decreased as the amount of the additive increased. The visible effect of PAC addition was manifested in changes in the adhesive force value and in water vapor permeability (WVP). The barrier properties decreased with the increase of the filler content.

Adsorption Equilibria of Water Vapor on Activated Carbon and DAY Zeolite

2005 ◽  
Vol 50 (3) ◽  
pp. 951-955 ◽  
Author(s):  
Min-Bae Kim ◽  
Young-Ki Ryu ◽  
Chang-Ha Lee
Keyword(s):  
Activated Carbon ◽  
Water Vapor ◽  
Adsorption Equilibria

Adsorption Equilibria of Water Vapor on an Alumina/Zeolite 13X Composite and Silica Gel

2017 ◽  
Vol 62 (2) ◽  
pp. 804-811 ◽  
Author(s):  
Hyun-Taek Oh ◽  
Seung-Jun Lim ◽  
Jeong Hoon Kim ◽  
Chang-Ha Lee
Keyword(s):  
Water Vapor ◽  
Silica Gel ◽  
Zeolite 13X ◽  
Adsorption Equilibria

scholarly journals Adsorption Equilibrium and Kinetics of the Removal of Ammoniacal Nitrogen by Zeolite X/Activated Carbon Composite Synthesized from Elutrilithe

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Yong Zhang ◽  
Feng Yu ◽  
Wenping Cheng ◽  
Jiancheng Wang ◽  
Juanjuan Ma
Keyword(s):  
Activated Carbon ◽  
Adsorption Kinetics ◽  
Nitrogen Adsorption ◽  
Carbon Composite ◽  
Ammoniacal Nitrogen ◽  
Zeolite X ◽  
Carbon Composite Material ◽  
Equilibrium And Kinetics ◽  
Hydrothermal Transformation ◽  
Kinetics Of

Zeolite X/activated carbon composite material (X/AC) was prepared from elutrilithe, by a process consisting of carbonization, activation, and subsequent hydrothermal transformation of aluminosilicate in alkaline solution, which was used for the removal of ammoniacal nitrogen from aqueous solutions. Adsorption kinetics, equilibrium, and thermodynamic were studied and fitted by various models. The adsorption kinetics is best depicted by pseudosecond-order model, and the adsorption isotherm fits the Freundlich and Redlich-Peterson model. This explains the ammoniacal nitrogen adsorption onto X/AC which was chemical adsorption in nature. Thermodynamic properties such as ΔG, ΔH, and ΔS were determined for the ammoniacal nitrogen adsorption, and the positive enthalpy confirmed that the adsorption process was endothermic. It can be inferred that ammoniacal nitrogen removal by X/AC composite is attributed to the ion exchange ability of zeolite X. Further, as a novel sorbent, this material has the potential application in removing ammoniacal nitrogen coexisting with other organic compounds from industrial wastewater.

Adsorption Equilibria of Water Vapor on Zeolite 3A, Zeolite 13X, and Dealuminated Y Zeolite

2016 ◽  
Vol 61 (4) ◽  
pp. 1547-1554 ◽  
Author(s):  
Kyung-Min Kim ◽  
Hyun-Taek Oh ◽  
Seung-Jun Lim ◽  
Keon Ho ◽  
Yongha Park ◽  
...  
Keyword(s):  
Water Vapor ◽  
Y Zeolite ◽  
Zeolite 13X ◽  
Adsorption Equilibria

scholarly journals Hierarchically Porous Silk/Activated-Carbon Composite Fibres for Adsorption and Repellence of Volatile Organic Compounds

Molecules ◽  
2020 ◽  
Vol 25 (5) ◽  
pp. 1207
Author(s):  
Aled D. Roberts ◽  
Jet-Sing M. Lee ◽  
Adrián Magaz ◽  
Martin W. Smith ◽  
Michael Dennis ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Carbon Composite ◽  
Hierarchically Porous ◽  
Surface Areas ◽  
Regenerated Silk Fibroin ◽  
Volatile Organic ◽  
Fibre Spinning ◽  
Solution Blow Spinning

Fabrics comprised of porous fibres could provide effective passive protection against chemical and biological (CB) threats whilst maintaining high air permeability (breathability). Here, we fabricate hierarchically porous fibres consisting of regenerated silk fibroin (RSF) and activated-carbon (AC) prepared through two fibre spinning techniques in combination with ice-templating—namely cryogenic solution blow spinning (Cryo-SBS) and cryogenic wet-spinning (Cryo-WS). The Cryo-WS RSF fibres had exceptionally small macropores (as low as 0.1 µm) and high specific surface areas (SSAs) of up to 79 m2·g−1. The incorporation of AC could further increase the SSA to 210 m2·g−1 (25 wt.% loading) whilst also increasing adsorption capacity for volatile organic compounds (VOCs).

scholarly journals Removal of organic pollutants from produced water by batch adsorption treatment

2021 ◽  
Author(s):  
Eman Hashim Khader ◽  
Thamer Jassim Mohammed ◽  
Nourollah Mirghaffari ◽  
Ali Dawood Salman ◽  
Tatjána Juzsakova ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Produced Water ◽  
Oxygen Demand ◽  
Powdered Activated Carbon ◽  
Pollutant Removal ◽  
Operating Conditions ◽  
Isotherm Models ◽  
Batch Adsorption ◽  
Order Kinetic ◽  
Zeolite X

AbstractThis paper studied the adsorption of chemical oxygen demand (COD), oil and turbidity of the produced water (PW) which accompanies the production and reconnaissance of oil after treating utilizing powdered activated carbon (PAC), clinoptilolite natural zeolite (CNZ) and synthetic zeolite type X (XSZ). Moreover, the paper deals with the comparison of pollutant removal over different adsorbents. Adsorption was executed in a batch adsorption system. The effects of adsorbent dosage, time, pH, oil concentration and temperature were studied in order to find the best operating conditions. The adsorption isotherm models of Langmuir, Freundlich and Temkin were investigated. Using pseudo-first-order and pseudo-second-order kinetic models, the kinetics of oil sorption and the shift in COD content on PAC and CNZ were investigated. At a PAC adsorbent dose of 0.25 g/100 mL, maximum oil removal efficiencies (99.57, 95.87 and 99.84 percent), COD and total petroleum hydrocarbon (TPH) were identified. Moreover, when zeolite X was used at a concentration of 0.25 g/100 mL, the highest turbidity removal efficiency (99.97%) was achieved. It is not dissimilar to what you would get with PAC (99.65 percent). In comparison with zeolites, the findings showed that adsorption over PAC is the most powerful method for removing organic contaminants from PW. In addition, recycling of the consumed adsorbents was carried out in this study to see whether the adsorbents could be reused. Chemical and thermal treatment will effectively regenerate and reuse powdered activated carbon and zeolites that have been eaten. Graphic abstract

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