Author: Francis Stapleton Chambers
Publisher:
ISBN:
Category :
Languages : en
Pages : 222
Book Description
Absorption of Nitrogen Dioxide by Aqueous Solutions
Author: Francis Stapleton Chambers
Publisher:
ISBN:
Category :
Languages : en
Pages : 222
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 222
Book Description
The Absorption of Nitrogen Oxides Into Water and Aqueous Solutions
Author: Yohji Kameoka
Publisher:
ISBN:
Category :
Languages : en
Pages : 286
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 286
Book Description
Absorption of Nitrogen Oxides in Aqueous Solutions
Author: Norman Beecher
Publisher:
ISBN:
Category :
Languages : en
Pages : 346
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 346
Book Description
The Chemical Absorption of Nitrogen Dioxide and Tetroxide in Alkaline Solutions
Author: James Kirk Rieke
Publisher:
ISBN:
Category :
Languages : en
Pages : 118
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 118
Book Description
Nitrogen oxides (NOx) why and how they are controlled
Author:
Publisher: DIANE Publishing
ISBN: 1428902805
Category :
Languages : en
Pages : 57
Book Description
Publisher: DIANE Publishing
ISBN: 1428902805
Category :
Languages : en
Pages : 57
Book Description
Aqueous Absorption of Nitrogen Oxides Induced by Oxychlorine Compounds
Author: Chen-Lu Yang
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 172
Book Description
The use of chlorine (Cl), sodium hypochlorite (NaClO), and sodium chlorite (NaClO) as oxidizing agents to promote the absorption of nitric oxide (NO) from gas streams has been investigated in the Gas Scrubbing Laboratory of New Jersey Institute of Technology since 1988. The first step of this project had been to screen out the best scrubbing medium for nitric oxide removal from flue gases. The most successful oxidizing agent was found to be sodium chlorite in acidic aqueous solution. The screening results have been accepted for publication in Chemical Engineering Communications. A sodium chlorite containing aqueous acid solution quantitatively absorbs nitric oxide in a 5.1 cm in diameter by 61 cm long bubble column scrubber. Under the same conditions, 90% removal were achieved with either chlorine gas or sodium hypochlorite aqueous scrubbing. An analytical instrument train, consisting of a Thermoelectron model 10A NO[x] analyzer, Beckman model 715 process oxygen monitor, and Rosemount model 890 UV SO analyzer, was set up to measure the concentration changes of inlet and outlet flue gas components. A preparatory liquid chromatography equipped with UV/Visible range photodiode array detector was set up for scrubbing solution real time monitoring of oxychlorinated compounds. Chlorine dioxide was found to be the active ingredient in the sodium chlorite aqueous scrubbing, while hypochlorous acid was the key oxidant for both chlorine and sodium hypochlorite scrubbing processes. During the operation, nitric oxide was oxidized to nitrate ion and sulfur dioxide to sulfate ion and were collected in the scrubbing solutions. At the same time, oxychlorine compounds were reduced to chloride ion, which was analyzed by ion chromatography. To obtain the reaction rate of nitric oxide with sodium chlorite aqueous solution for process design consideration, a droplet surface reaction model was derived to correlate experimental data from spray tower scrubber. The model predicted conversion of NO very well but not absorption because the model does not predict breakthrough of nitrogen dioxide (NO). Therefore, a model of absorption with chemical reaction was used to study the absorption of NO in a packed bed scrubber to determine the feasibility of controlling all air pollutants in one scrubber. In the model, theoretical height of transfer unit (HTU) was used to evaluate the efficiency of scrubbing solutions. The influence of different variables such as temperature, pH, gas stream flow rate, concentration of sodium chlorite, and other components in the flue gas on height of transfer unit was evaluated.
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 172
Book Description
The use of chlorine (Cl), sodium hypochlorite (NaClO), and sodium chlorite (NaClO) as oxidizing agents to promote the absorption of nitric oxide (NO) from gas streams has been investigated in the Gas Scrubbing Laboratory of New Jersey Institute of Technology since 1988. The first step of this project had been to screen out the best scrubbing medium for nitric oxide removal from flue gases. The most successful oxidizing agent was found to be sodium chlorite in acidic aqueous solution. The screening results have been accepted for publication in Chemical Engineering Communications. A sodium chlorite containing aqueous acid solution quantitatively absorbs nitric oxide in a 5.1 cm in diameter by 61 cm long bubble column scrubber. Under the same conditions, 90% removal were achieved with either chlorine gas or sodium hypochlorite aqueous scrubbing. An analytical instrument train, consisting of a Thermoelectron model 10A NO[x] analyzer, Beckman model 715 process oxygen monitor, and Rosemount model 890 UV SO analyzer, was set up to measure the concentration changes of inlet and outlet flue gas components. A preparatory liquid chromatography equipped with UV/Visible range photodiode array detector was set up for scrubbing solution real time monitoring of oxychlorinated compounds. Chlorine dioxide was found to be the active ingredient in the sodium chlorite aqueous scrubbing, while hypochlorous acid was the key oxidant for both chlorine and sodium hypochlorite scrubbing processes. During the operation, nitric oxide was oxidized to nitrate ion and sulfur dioxide to sulfate ion and were collected in the scrubbing solutions. At the same time, oxychlorine compounds were reduced to chloride ion, which was analyzed by ion chromatography. To obtain the reaction rate of nitric oxide with sodium chlorite aqueous solution for process design consideration, a droplet surface reaction model was derived to correlate experimental data from spray tower scrubber. The model predicted conversion of NO very well but not absorption because the model does not predict breakthrough of nitrogen dioxide (NO). Therefore, a model of absorption with chemical reaction was used to study the absorption of NO in a packed bed scrubber to determine the feasibility of controlling all air pollutants in one scrubber. In the model, theoretical height of transfer unit (HTU) was used to evaluate the efficiency of scrubbing solutions. The influence of different variables such as temperature, pH, gas stream flow rate, concentration of sodium chlorite, and other components in the flue gas on height of transfer unit was evaluated.
Absorption of Nitrogen Oxides Into Aqueous Sodium Hydroxide Solutions
Author: Andrew J. Lucero
Publisher:
ISBN:
Category : Nitrogen oxides
Languages : en
Pages : 144
Book Description
Publisher:
ISBN:
Category : Nitrogen oxides
Languages : en
Pages : 144
Book Description
WHO Guidelines for Indoor Air Quality
Author:
Publisher: World Health Organization
ISBN:
Category : House & Home
Languages : en
Pages : 488
Book Description
This book presents WHO guidelines for the protection of public health from risks due to a number of chemicals commonly present in indoor air. The substances considered in this review, i.e. benzene, carbon monoxide, formaldehyde, naphthalene, nitrogen dioxide, polycyclic aromatic hydrocarbons (especially benzo[a]pyrene), radon, trichloroethylene and tetrachloroethylene, have indoor sources, are known in respect of their hazardousness to health and are often found indoors in concentrations of health concern. The guidelines are targeted at public health professionals involved in preventing health risks of environmental exposures, as well as specialists and authorities involved in the design and use of buildings, indoor materials and products. They provide a scientific basis for legally enforceable standards.
Publisher: World Health Organization
ISBN:
Category : House & Home
Languages : en
Pages : 488
Book Description
This book presents WHO guidelines for the protection of public health from risks due to a number of chemicals commonly present in indoor air. The substances considered in this review, i.e. benzene, carbon monoxide, formaldehyde, naphthalene, nitrogen dioxide, polycyclic aromatic hydrocarbons (especially benzo[a]pyrene), radon, trichloroethylene and tetrachloroethylene, have indoor sources, are known in respect of their hazardousness to health and are often found indoors in concentrations of health concern. The guidelines are targeted at public health professionals involved in preventing health risks of environmental exposures, as well as specialists and authorities involved in the design and use of buildings, indoor materials and products. They provide a scientific basis for legally enforceable standards.
Absorption of Nitrogen Oxides in Caustic Solutions
Author: Enrique N. Fructuoso
Publisher:
ISBN:
Category :
Languages : en
Pages : 126
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 126
Book Description
Absorption of Four Valent Nitrogen Oxides Into Aqueous Sodium Hydroxide Solutions in a Packed Tower
Author: Douglas Bruce Crawford
Publisher:
ISBN:
Category : Nitrogen oxides
Languages : en
Pages : 296
Book Description
Publisher:
ISBN:
Category : Nitrogen oxides
Languages : en
Pages : 296
Book Description