Adsorption characteristics of acetone, chloroform and acetonitrile on sludge-derived adsorbent, commercial granular activated carbon and activated carbon fibers

Tsai, Jason Sheng Hong; Chiang, Hsiu-Mei; Huang, Guan Yinag; Chiang, Hung‐Lung

doi:10.1016/j.jhazmat.2007.11.065

Cited by 169 publications

(52 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Nevertheless, activated carbon adsorption of macromolecules and hydrophilic VOCs is not good because it has a multi-microporous structure and is a nonpolar adsorbent [104]. On the other hand, activated carbon fibers adsorb VOCs better than activated carbon because of their short and straight thin-fiber shaped micropores that increase intraparticle adsorption kinetics compared to activated carbon [119,120]. In addition, activated carbon fibers also play an important role during adsorption or desorption, they have large adsorption capacity and high mass transfer rates [121,122].…”

Section: Volatile Organic Compoundsmentioning

confidence: 99%

Fabrication of Multifunctional Hybrid Composites Using Fly Ash to Control Environmental Pollutants: A Review

Ge¹,

Yoon²,

Choi³

2018

Preprint

View full text Add to dashboard Cite

Air pollutants such as volatile organic compounds (VOCs), nitrogen oxides (NOx), sulfur dioxide (SO2), as well as water pollutants including heavy metal, are harmful to human and environment. Effective control and reduction of their pollution is therefore an important topic for today's scientists. Fly ash (FA) is a type of industrial waste that can cause multiple environmental problems if discharged into the air. On the other hand, because of its high porosity, large specific surface area, and other unique characteristics, the FA can also be used as a low-cost and high efficient adsorbent with some simple modifications. This paper reviews the effects of FA on treatment of the above air and water pollution based on our research experience over many years, including to the current status of global FA utilization, physicochemical properties, principle of adsorption, and the application direction of FA in the future. It focuses on the use of nanocomposite technology to fabricate functional FA fibrous membranes to adsorb VOCs from air, and treat heavy metal wastewater. This present review first describes the fabrication technology of FA nanocomposites and their mechanism of adsorption VOCs from air. Utilization of nanofiber technology to fabricate multi-functional FA emerging composite materials to mitigate air and water pollution has great potential in the future, especially use of pollutant material to control other pollutants.

show abstract

Section: Volatile Organic Compoundsmentioning

confidence: 99%

Fabrication of Multifunctional Hybrid Composites Using Fly Ash to Control Environmental Pollutants: A Review

Ge¹,

Yoon²,

Choi³

2018

Preprint

View full text Add to dashboard Cite

show abstract

“…: +82 53 950 6584; Fax: +82 53 950 6579 E-mail address: wkjo@knu.ac.kr (Salvador et al, 2006;Wang et al, 2006), scrubbing (Yang et al, 2011), and physical adsorption (Tsai et al, 2008;Shiue et al, 2010). Adsorption via granular-type activated carbon (GAC) is typically used to control indoor VOCs in non-industrial buildings (Haghighat et al, 2008;HowardReed et al, 2008;Bastani et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Fibrous activated carbon (FAC) is a recent alternative adsorbent that overcomes this drawback (Sidheswaran et al, 2012). In addition, FAC has a larger specific surface area than GAC, higher adsorption capacity, faster equilibrium for adsorption, and low pressure drop (Das et al, 2004;Fournel et al, 2005;Lorimier et al, 2005;Tsai et al, 2008). These advantages make FAC a promising candidate for use in VOC filters in portable indoor air cleaning devices, as well as in building heating, ventilation and air conditioning (HVAC) systems.…”

Section: Introductionmentioning

confidence: 99%

“…These advantages make FAC a promising candidate for use in VOC filters in portable indoor air cleaning devices, as well as in building heating, ventilation and air conditioning (HVAC) systems. Several studies (Das et al, 2004;Tsai et al, 2008;Águeda et al, 2011) have suggested that the adsorption performance of VOCs can be varied according to different parameters, such as adsorbate type, initial concentrations (ICs) and stream flow rates (SFRs) as well as relative humidity (RH). Tsai et al (2008) reported the effect of adsorbates at high IC ranges (43-7800 ppm) on the adsorption characteristics of FAC and other adsorbents.…”

Section: Introductionmentioning

confidence: 99%

“…Several studies (Das et al, 2004;Tsai et al, 2008;Águeda et al, 2011) have suggested that the adsorption performance of VOCs can be varied according to different parameters, such as adsorbate type, initial concentrations (ICs) and stream flow rates (SFRs) as well as relative humidity (RH). Tsai et al (2008) reported the effect of adsorbates at high IC ranges (43-7800 ppm) on the adsorption characteristics of FAC and other adsorbents. Das et al (2004) also reported the dependence of ICs of selected VOCs at 2000-10,000 ppm and SFRs at 0.2-1.0 L/min on the adsorption capacity of FAC.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Application of Fibrous Activated Carbon Filter in Continuous-Flow Unit for Removal of Volatile Organic Compounds under Simulated Indoor Conditions

2014

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

This work explored the feasibility of applying fibrous activated carbon (FAC) for use as volatile organic compound filters in portable indoor air cleaning devices under simulated indoor conditions. The saturation time for benzene, toluene, ethyl benzene, and xylene (BTEX) decreased from ~11 to ~3 h, ~17 to ~8 h, ~52 to ~17 h, and ~54 to ~27 h, respectively, as the relative humidity (RH) increased from 20 to 90%. Consistently, the adsorption capacities for BTEX decreased as the RH increased. The saturation time for BT decreased from ~11 to ~2 h and ~70 to ~22 h, respectively, as the initial concentration (IC) increased from 0.1 to 2.0 ppm. In contrast, the adsorption capacities for BT increased from 1.8 to 7.5 mg/g and 8.9 to 53 mg/g, respectively, as the IC increased from 0.1 to 2.0 ppm. The saturation time for BT decreased from ~24 to < 4 h and ~132 to ~22 h, respectively, as the stream flow rate (SFR) increased from 1 to 7 L/min. In addition, the adsorption capacities for BT decreased from 55 to 3.1 mg/g and 308 to 36 mg/g, respectively, as the SFR increased from 1 to 7 L/min. The regeneration efficiencies for both target compounds increased as the desorption temperature increased from 50 to 200°C, while the regeneration times decreased. Overall, this study provides information regarding the optimal operational and regeneration conditions of FAC.

show abstract

High‐Performance Activated Carbons Synthesized from Nanocellulose for CO₂ Capture and Extremely Selective Removal of Volatile Organic Compounds

Ruan

et al. 2017

Advanced Sustainable Systems

View full text Add to dashboard Cite

A series of sustainable activated carbons (ACs) with large surface areas and tunable pore sizes is synthesized from Cladophora cellulose and its chemically modified derivatives in a one‐step physical carbonization/activation process. The molecular structure of the cellulose precursors and the carbonization/activation atmosphere (N2 or CO2) significantly influence the pore structure of the ACs. When using oxidized cellulose and its further cross‐linkages as the precursor, the ACs have a large volume of ultramicropores (pore diameter < 0.8 nm). Activation in CO2 results in ACs with surface areas up to 1241 m2 g−1. These ACs have a high CO2 uptake capacity (2.29 mmol g−1 at 0.15 bar, 5.52 mmol g−1 at 1 bar; 273 K) and a high CO2–over–N2 selectivity (42 at 273 K). In addition, the capacity of the ACs to adsorb vapors of volatile organic compounds (VOCs) is remarkable, with values up to 0.97 mmol g−1 at very low VOC concentrations (200 ppmv). The ACs have ultrahigh VOCs–over–N2 selectivity up to 9.35 × 103 at 293 K for 0.02 vol%/99.8 vol% of benzene/N2 mixture. It is anticipated that these ACs will be useful as sorbents for the postcombustion capture of CO2 and for indoor removal and direct air capture of various VOCs.

show abstract

Adsorption characteristics of acetone, chloroform and acetonitrile on sludge-derived adsorbent, commercial granular activated carbon and activated carbon fibers

Cited by 169 publications

References 23 publications

Fabrication of Multifunctional Hybrid Composites Using Fly Ash to Control Environmental Pollutants: A Review

Fabrication of Multifunctional Hybrid Composites Using Fly Ash to Control Environmental Pollutants: A Review

Application of Fibrous Activated Carbon Filter in Continuous-Flow Unit for Removal of Volatile Organic Compounds under Simulated Indoor Conditions

High‐Performance Activated Carbons Synthesized from Nanocellulose for CO₂ Capture and Extremely Selective Removal of Volatile Organic Compounds

Contact Info

Product

Resources

About

Adsorption characteristics of acetone, chloroform and acetonitrile on sludge-derived adsorbent, commercial granular activated carbon and activated carbon fibers

Cited by 169 publications

References 23 publications

Fabrication of Multifunctional Hybrid Composites Using Fly Ash to Control Environmental Pollutants: A Review

Fabrication of Multifunctional Hybrid Composites Using Fly Ash to Control Environmental Pollutants: A Review

Application of Fibrous Activated Carbon Filter in Continuous-Flow Unit for Removal of Volatile Organic Compounds under Simulated Indoor Conditions

High‐Performance Activated Carbons Synthesized from Nanocellulose for CO2 Capture and Extremely Selective Removal of Volatile Organic Compounds

Contact Info

Product

Resources

About

High‐Performance Activated Carbons Synthesized from Nanocellulose for CO₂ Capture and Extremely Selective Removal of Volatile Organic Compounds