Evaluation of metal oxide nanoparticles for adsorption of gas phase ammonia

Rezaei, Ebrahim; Schlageter, Beauregard; Nemati, Mehdi; Predicala, Bernardo

doi:10.1016/j.jece.2016.12.026

Cited by 41 publications

(17 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Freundlich adjustment was worse than that obtained by the Langmuir model, which reflects the error associated with the thermodynamic parameters. In a recent paper, Rezaei et al [79] reported similar values of adsorption enthalpy over metal oxide nanoparticles suggesting that NH3 was physisorbed on metallic clusters. Domingo-García et al [80] reported adsorption enthalpies between −61.5 and −122 kJ/mol, for carbonaceous materials with chemical modification.…”

Section: Ammonia Adsorption Over Cag 90mentioning

confidence: 90%

Carbon Aerogel-Supported Nickel and Iron for Gasification Gas Cleaning. Part I: Ammonia Adsorption

et al. 2018

View full text Add to dashboard Cite

Biomass gasification is a promising way to obtain “green energy”, but the gas composition makes it unsuitable for use in traditional technologies (i.e., IC engine). Gas purification over nickel and/or iron catalysts is an attractive alternative. Cellulose-based carbon aerogels (CAGs) have shown suitable physical chemical properties for use as catalyst supports. In this work, nickel and iron catalysts are supported on CAG made from cellulose microfibers. Microfibers were impregnated with (NH4)2SO4 to increase the mass yield. Carbonization was evaluated at different heating rates, maximum temperatures, and dwell times to generate CAGs. Resulting chars were characterized by N2 adsorption, X-ray diffraction (XRD), and Raman spectroscopy. The CAG with better properties (specific surface, pore size, thermal resistance) was impregnated with the metal precursor salt via incipient wetness and treated with H2. Catalysts were characterized by transmission electron microscopy (TEM), XRD, N2 adsorption, and inductively coupled plasma optical emission spectrometry (ICP-OES). Ammonia adsorption was studied over CAG and catalysts to estimate the thermodynamic parameters. The impregnation with ((NH4)2SO4 improves thermal resistance of the char obtained from carbonization. The catalysts exhibit higher adsorption capacity than CAG (without metal), indicating chemical interaction between ammonia and metals. The metal-ammonia interaction is stronger on Fe than on Ni catalyst, which is consistent with reported theoretical calculations.

show abstract

Section: Ammonia Adsorption Over Cag 90mentioning

confidence: 90%

Carbon Aerogel-Supported Nickel and Iron for Gasification Gas Cleaning. Part I: Ammonia Adsorption

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The laboratory experimental system for simultaneous capture of ammonia and hydrogen sulphide was a modification of the systems used for the capture of individual NH3 and H 2 S and consisted of feed gas tanks, an adsorption column with the nano-based adsorbent, mass flow meters, differential pressure transducer, thermocouple, stainless steel tubing including the required sampling ports and an online gas chromatograph [5], [8], [9]. The nano-based adsorbents used in the experimental runs were either a binary mixture of commercial ZnO and TiO 2 , or a tailor-made composite adsorbent that consisted of activated carbon with deposited ZnO and TiO 2 nanoparticles.…”

Section: Evaluation Of Emission Control In Laboratory Scale Systemmentioning

confidence: 99%

“…Ammonia is an odorous air pollutant with serious impact on human and animal health. Ammonia inhalation could irritate nose and throat and cause nausea and respiratory tract problems [5]. Formation of ground level ozone and fine ammonium nitrate particulates are some of the environmental challenges associated with the emission of ammonia [6], [7].…”

Section: Introductionmentioning

confidence: 99%

“…In summary we have investigated the application of pure metal oxide nanoparticles (e.g. TiO 2 and ZnO), as well as composite nano-adsorbents (TiO 2 nanoparticles deposited on activated carbon) for the removal of individual NH 3 and H 2 S from gaseous streams, with the results reported elsewhere [5], [8], [9]. The current paper focuses on other phases of this research that aimed at simultaneous capture of NH 3 and H 2 S from gaseous streams and includes an overview of our findings from the laboratory work conducted with pre-mixed gases, semi-pilot scale tests with representative gases (e.g.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

NANOTECHNOLOGY-BASED CONTROL OF HAZARDOUS AIR POLLUTANTS EMISSION: PILOT SCALE TRIALS FOR SIMULTANEOUS CAPTURE OF H₂S, NH₃, AND ODOURS FROM LIVESTOCK FACILITIES

Labrada

Kumar

Predicala

et al. 2019

WIT Transactions on Ecology and the Environment

Self Cite

View full text Add to dashboard Cite

Generation and emission of hazardous gases such as hydrogen sulphide (H2S), and ammonia (NH3 from industrial settings and livestock production facilities represent one of the major air pollution challenges. Traditional approaches like physicochemical processes used in industrial settings, and diet manipulation, manure confinement, and addition of inhibitors commonly employed in livestock operations are associated with technical drawbacks, excessive cost, inability to completely eliminate pollutants, and difficulty of implementation on a small scale. Thus, there is a need for development of more effective and feasible technologies. One such innovative approach is the use of nano-based adsorbents to mitigate the emission of these air pollutants. Effective capture of individual H2S and NH3 using metal oxide nanoparticles (ZnO and TiO2) have been reported in our earlier work. To evaluate the potential for wider applications, we have now investigated simultaneous capture of NH3, H2S, and odours by a mixture of ZnO and TiO2 nanoparticles and a tailor-made composite adsorbent (ZnO and TiO2 nanoparticles deposited on activated carbon). Laboratory work with pre-mixed gases of various compositions revealed that an increase of H2S and NH3 concentrations led to higher adsorption capacities with both nano-adsorbents. Higher temperatures enhanced the adsorption of H2S but led to lower adsorption capacities for NH3. Characterization of adsorbents through CNHS analyses, thermogravimetry, FT-IR and XRD revealed that ZnO and TiO2 both adsorbed NH3 and H2S. While ZnO had a much higher affinity for H2S through chemisorption, TiO2 was more effective in adsorption of NH3 by physisorption. Results from trials conducted in a semi-pilot scale adsorption system fed with swine manure gases, and those in a livestock research facility where a nano-based circulation-filtration system was deployed in a real situation confirmed the effectiveness of nano-adsorbents in capture of NH3, H2S, and odours from representative gases in real settings.

show abstract

“…But capital cost and operating cost is very high. So adsorption is a most attractive method for removing gaseous ammonia . Different materials such as MgO, Activated carbon, Titanium Dioxide nanoparticles are good adsorbent of ammonia.…”

Section: Introductionmentioning

confidence: 99%

Consequence assessment of anhydrous ammonia release using CFD‐probit analysis

Namboothiri

Soman

2018

Process Safety Progress

View full text Add to dashboard Cite

An accidental release of hazardous chemical can happen in industries during its production, storage, and transportation. The consequence assessment is a method of analyzing the impact of hazardous chemical release into the environment. It includes the identification of threat zone and its impact on people. Consequence assessment is a primary part of risk assessment which is essential for the development of mitigation strategy. In this study, a consequence assessment of anhydrous ammonia release from a storage facility was conducted and the mitigation strategy was developed. A hypothetical accidental release of ammonia from a storage facility in a chemical process industry was assumed. The evaporation of ammonia pool formed by the release was estimated using CFD analysis and the dispersion of the ammonia was found out using ALOHA. Three different wind speed was taken for analyzing the consequences. Probability of death of people living in the threat zone was estimated by probit analysis. A mitigation strategy was developed based on adsorption principle using modified carbon nanoparticles. © 2018 American Institute of Chemical Engineers Process Saf Prog 37: 525–534, 2018

show abstract

Evaluation of metal oxide nanoparticles for adsorption of gas phase ammonia

Cited by 41 publications

References 52 publications

Carbon Aerogel-Supported Nickel and Iron for Gasification Gas Cleaning. Part I: Ammonia Adsorption

Carbon Aerogel-Supported Nickel and Iron for Gasification Gas Cleaning. Part I: Ammonia Adsorption

NANOTECHNOLOGY-BASED CONTROL OF HAZARDOUS AIR POLLUTANTS EMISSION: PILOT SCALE TRIALS FOR SIMULTANEOUS CAPTURE OF H₂S, NH₃, AND ODOURS FROM LIVESTOCK FACILITIES

Consequence assessment of anhydrous ammonia release using CFD‐probit analysis

Contact Info

Product

Resources

About

Evaluation of metal oxide nanoparticles for adsorption of gas phase ammonia

Cited by 41 publications

References 52 publications

Carbon Aerogel-Supported Nickel and Iron for Gasification Gas Cleaning. Part I: Ammonia Adsorption

Carbon Aerogel-Supported Nickel and Iron for Gasification Gas Cleaning. Part I: Ammonia Adsorption

NANOTECHNOLOGY-BASED CONTROL OF HAZARDOUS AIR POLLUTANTS EMISSION: PILOT SCALE TRIALS FOR SIMULTANEOUS CAPTURE OF H2S, NH3, AND ODOURS FROM LIVESTOCK FACILITIES

Consequence assessment of anhydrous ammonia release using CFD‐probit analysis

Contact Info

Product

Resources

About

NANOTECHNOLOGY-BASED CONTROL OF HAZARDOUS AIR POLLUTANTS EMISSION: PILOT SCALE TRIALS FOR SIMULTANEOUS CAPTURE OF H₂S, NH₃, AND ODOURS FROM LIVESTOCK FACILITIES