Adsorption removal of arsine by modified activated carbon

Ming, Jiang; Yang, Bai; Ning, Ping; Huang, Xiaofeng; Liu, Hongpan; Fu, Jianqiu

doi:10.1007/s10450-015-9656-x

Cited by 20 publications

(10 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Incessant progress in this field stimulates the search for new and effective but first of all low-cost adsorbents. From among the various materials used for this purpose (Goscianska et al 2013;Wiśniewska et al 2007Wiśniewska et al , 2013Wiśniewska et al , 2014Kierys et al 2013;Wiśniewska 2010Wiśniewska , 2012Krysztafkiewicz et al 2002;Thomas and Syres 2012;De Smedt et al 2015;Qian et al 2015) the most popular and promising are the carbonaceous sorbents, especially activated carbons (Jiang et al 2015;Deng et al 2015;Sharma and Upadhyay 2009;Goscianska and Pietrzak 2015;Jiang and Chen 2011). Such materials could be prepared in a simple way by physical or chemical activation of variety of organic substances, including wood (Wang et al 2009;Nowicki et al 2015a), peat (Khadiran et al 2015), fossil coals (Nowicki and Pietrzak 2011;Maroto-Valer et al 2005;Teng et al 1998) as well as many biodegradable (Karagöz et al 2008;Soleimani and Kaghazchi 2008;Kazmierczak et al 2013Kazmierczak et al , 2015Nowicki et al 2015b) and industrial waste (Nakagawa et al 2003;Hofman and Pietrzak 2011;Nowicki et al 2013;Lin and Teng 2002).…”

Section: Introductionmentioning

confidence: 99%

The effect of mineral matter on the physicochemical and sorption properties of brown coal-based activated carbons

Nowicki

2015

Adsorption

View full text Add to dashboard Cite

A series of new carbonaceous adsorbents has been obtained by means of direct and physical activation of Polish brown coal, characterised by high mineral matter content. The influence of activation procedure on the porous structure development, acidic and basic surface groups generation as well as the sorptive properties of the adsorbents prepared toward liquid and gas pollutants was tested. Additionally the effect of mineral matter presence on the physicochemical and sorption properties of materials prepared was studied. The final products were micro/mesoporous activated carbons of medium developed surface area ranging from 407 to 674 m 2 /g, showing strongly basic or intermediate acidic-basic character of the surface. The results obtained during this study showed that direct and physical activation of low quality brown coal led to activated carbons with very good sorption capacity both toward gas contamination of acidic character (especially nitrogen dioxide) as well as toward methylene blue and inorganic pollutants of molecules of size similar to that of iodine molecules. It was also proved that demineralization of prepared activated carbons by hydrochloric acid significantly reduced their ability to toxic gases sorption, but simultaneously increased the efficiency of removing impurities from the liquid phase.

show abstract

Section: Introductionmentioning

confidence: 99%

The effect of mineral matter on the physicochemical and sorption properties of brown coal-based activated carbons

Nowicki

2015

Adsorption

View full text Add to dashboard Cite

show abstract

“…Uffalussy et al 9 performed adsorption of AsH 3 by the Cu–Pd alloy using a high-throughput composition spread alloy film sample library. Jiang et al 10 noticed that a reaction temperature of 60 °C and an oxygen content of 4% allowed Co/Cu/Ac to effectively adsorb AsH 3 after calcination at 400 °C with the adsorption capacity of AsH 3 reaching 35.7 mg/g. Wang et al 11 reported adsorbents with 0.2 mol/L Cu(NO 3 ) 2 after calcination at 400 °C to possess superior activity towards the removal of AsH 3 .…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Role of Copper Species-Modified Active Carbon by Low-Temperature Roasting on the Improvement of Arsine Adsorption

Chen¹,

Feng

Xie

et al. 2022

ACS Omega

Self Cite

View full text Add to dashboard Cite

Traditional adsorbents undershot the expectations for arsine (AsH 3 ) removal under low-temperature operation conditions in the industry. In this study, the copper (Cu) precursor was used to modify activated carbon and yield novel adsorbents by low-temperature roasting for high-efficiency removal of AsH 3 . The best conditions were determined as impregnation with 2 mol/L Cu(NO 3 ) 2 adsorbent and roasting at 180 °C. At a reaction temperature of 40 °C and an oxygen content of 1%, the AsH 3 removal efficiency reached over 90% and lasted for 40 h and the best capacity of 369.6 mg/g was obtained with the Cu/Ac adsorbent. The characterization results showed the decomposition of Cu(NO 3 ) 2 during the low-temperature roasting process to form surface functional groups. The formation of the important intermediate Cu 2 (NO 3 )(OH) 3 in the decomposition of Cu(NO 3 ) 2 into CuO plays a role in the good regeneration performance of the Cu/Ac adsorbent using water washing and the gas regeneration method. The results of in situ diffuse reflectance infrared Fourier transform spectroscopy combined with X-ray photoelectron spectroscopy demonstrated that the interaction of trace oxygen with Lewis (L) acid sites increased chemisorbed oxygen by 17.34%, significantly promoting the spontaneity of AsH 3 oxidation reaction. These results provide a friendly economic method with industrial processes practical for AsH 3 removal.

show abstract

“…Gas–solid reactions allow efficient removal of AsH 3 . The gas–solid system can directly remove AsH 3 by stabilizing it into stable arsenic, thereby avoiding subsequent migration and transformation of arsenic species.…”

Section: Introductionmentioning

confidence: 99%

“…Gas−solid reactions allow efficient removal of AsH 3 . 13 The gas−solid system can directly remove AsH 3 by stabilizing it into stable arsenic, thereby avoiding subsequent migration and transformation of arsenic species. From the practical and economical viewpoints, two methods are available for the removal of AsH 3 .…”

Section: Introductionmentioning

confidence: 99%

Improved Arsine Removal Efficiency Over MnO_x Supported Molecular Sieves Catalysts via Micro-Oxygen Oxidation

et al. 2017

Self Cite

View full text Add to dashboard Cite

With the aim of improving the arsine (AsH 3 ) removal efficiency, 5A molecular sieves were modified by the transition metal oxides and used as catalysts. MnO x catalysts supported on 5A molecular sieves (Mn-5A) were prepared by an impregnation method and subsequently tested toward the catalytic oxidation of AsH 3 under micro-oxygen conditions at 150 °C. The effects of the metal oxide types that supported, the impregnate concentration of manganese nitrate, the calcination temperature, the oxygen content, and the fixed bed reaction temperature on the AsH 3 removal efficiency were studied. The optimum catalyst was prepared by a solution impregnation method with a 0.5 mol•L −1 Mn 2+ aqueous solution and subsequently calcined at 500 °C. This catalyst showed the highest activity toward the oxidation of AsH 3 among the samples prepared herein (100% conversion) over a good low-temperature operation window (120−160 °C) and under low oxygen concentration (0− 2.0%) conditions. The majority presence of Mn 4+ active species is believed to be one predominant factor accounting for the excellent AsH 3 removal efficiency of this catalyst. The dominant active Mn 4+ species of Mn-5A is found to be a mixture of MnO 2 , Mn 3 O 4 , and Mn 2 O 3 . BET area analysis coupled with EDS measurement show that after oxidizing AsH 3 with O 2 , the resulting As 2 O 5 seems to block the surface of Mn-5A leading to a decrease of the activity. XPS data indicates that the oxidation state of MnO x species on Mn-5A was not affected after reaction. So the main deterioration mechanism of Mn-5A on AsH 3 removal under our reaction condition is mainly due to physical blocking effect. According to the characterizations results, the Mn-5A catalyst possessed a higher number of active sites than the rest of samples and formed active intermediates during reaction, both factors leading the highly efficient removal of AsH 3 under low-temperature micro-oxygen conditions.

show abstract

Adsorption removal of arsine by modified activated carbon

Cited by 20 publications

References 32 publications

The effect of mineral matter on the physicochemical and sorption properties of brown coal-based activated carbons

The effect of mineral matter on the physicochemical and sorption properties of brown coal-based activated carbons

Investigation of the Role of Copper Species-Modified Active Carbon by Low-Temperature Roasting on the Improvement of Arsine Adsorption

Improved Arsine Removal Efficiency Over MnO_x Supported Molecular Sieves Catalysts via Micro-Oxygen Oxidation

Contact Info

Product

Resources

About

Adsorption removal of arsine by modified activated carbon

Cited by 20 publications

References 32 publications

The effect of mineral matter on the physicochemical and sorption properties of brown coal-based activated carbons

The effect of mineral matter on the physicochemical and sorption properties of brown coal-based activated carbons

Investigation of the Role of Copper Species-Modified Active Carbon by Low-Temperature Roasting on the Improvement of Arsine Adsorption

Improved Arsine Removal Efficiency Over MnOx Supported Molecular Sieves Catalysts via Micro-Oxygen Oxidation

Contact Info

Product

Resources

About

Improved Arsine Removal Efficiency Over MnO_x Supported Molecular Sieves Catalysts via Micro-Oxygen Oxidation