Consulta: subjectFacets:"Ozonation"
Registros recuperados: 6
Data/hora: 08/06/2024 11:39:11

REACTION KINETICS OF OZONE GAS IN WHEAT FLOUR
Provedor de dados: Engenharia Agrícola
Autores: Paes,Juliana L.; Faroni,Lêda R. A.; Martins,Marcio A.; Cecon,Paulo R.; Heleno,Fernanda F.
ABSTRACT The implementation of the ozonation process in the milling industry to control insect pests and improve wheat flour qualities requires understanding the behavior of ozone during ozonation. Therefore, this study aimed to investigate the reaction kinetics of ozone gas in wheat flour. Wheat flour ozonation at concentrations of 0.54, 1.07, 1.61 and 2.14 mg L−1 was used in a prototype consisting of a cylinder and a mixing system with a helical thread. The iodometric titration method was used to quantify the ozone concentration in the air stream. The reaction kinetics were characterized by determining the saturation time and the decomposition kinetics (decay rate and half-life time). With increasing ozone concentration, less time was required to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ozonation; Saturation; Decay rate; Half-life time.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000300520

Viral depuration of Mytilus galloprovincialis in ozone treated water
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Croci, L; Demedici, D; Franco, E; Gabrielli, R; Dipasquale, S; Toti, L.
The depuration effectiveness of Poliovirus 1 and HAV contamined mussels, when subjected to flowing ozonized water, was evaluated. Mussels were experimentally contamined and then depurated up to 72 hours using a pilot depuration system with ozone treated and untreated water. The results showed that viral infectivity titter decreased more rapidly in mussels subjected to ozonized water (from 10 super(4) TCID50 to 10 super(1.5) TCID50 per ml of Poliovirus 1 but in the following period it remained unchanged. Also HAV was detected in the mussels after 72 h of depuration.
Tipo: Text
Palavras-chave: Mytilus galloprovincialis; Bivalvia; Ozonation; Ozone; Viral diseases; Marine molluscs; Self purification.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-1610.pdf

Ozone treatment of textile wastewater relevant to toxic effect elimination in marine environment
Provedor de dados: Ocean Docs: e-repository of  publications
Autores: Guendy, H.R.
Ozone is a powerful oxidizing agent. The reaction of ozone with organic compounds in aqueous media has achieved a variety of treatment goals. The advantage of ozonation over the other oxidants is that the degradable products of ozonation are generally non-toxic, its final products are CO2 and H2O, and also the residual O3 in the system changes in few minutes to O2 .Convential treatment of textile wastewater includes various combinations of biological (activated sludge), physical and chemical processes. The dyestuffs existed in these wastewater are highly structured organic molecules which are hardly break down biologically. Decolorization of two types of dyes, Direct Pink 3B and Reactive Violet SH- 2R, by ozonation in aqueous medium was studied in presence...
Tipo: Journal Contribution
Palavras-chave: Laboratory Study; Ozonation; Wastewater treatment; Ozonation; Wastewater treatment; Http://aims.fao.org/aos/agrovoc/c_34875; Http://aims.fao.org/aos/agrovoc/c_25312.
Ano: 2007
URL: http://hdl.handle.net/1834/1903

Physiological and sanitary quality of maize seeds preconditioned in ozonated water
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Maximiano,Christian V.; Carmona,Ricardo; Souza,Nara O. S.; Alencar,Ernandes R. de; Blum,Luiz E. B.
ABSTRACT The technique of controlled hydration of seeds has been used as a method of physiological conditioning to improve their performance in the field. Solution aeration with ozone gas is a promising option in controlling phytopathogens. The objective of the present study was to evaluate the physiological and sanitary quality of maize seeds preconditioned in ozonated water. In the evaluation of the physiological and sanitary quality, maize seeds were submitted to four concentrations of ozone gas (0, 10, 20 and 30 mg L-1) for five soaking periods (0, 30, 60, 90 and 120 min), with four replicates. Preconditioning maize seeds in ozonated water, followed by natural drying, resulted in a more pronounced initial development of seedlings, measured by means of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Ozonation; Health; Conditioning.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000500360

Ozone saturation and decomposition kinetics in porous medium containing different hybrids of maize
Provedor de dados: Revista Brasileira de Engenharia Agrícola e Ambiental
Autores: Souza,Jefferson V. da S.; Alencar,Ernandes R. de; Junqueira,Ana M. R.; Oliveira,Gustavo P. de.
ABSTRACT The objective of this study was to evaluate ozone saturation and decomposition kinetics in porous medium containing grains of different hybrids of maize. The following hybrids were used: common maize hybrid AG 1051, super sweet maize hybrids Tropical Plus, GSS 42072, GSS 41499 and GSS 41243. 1 kg grain samples with water contents of 13.0% (w.b.) were placed in glass containers with 3.25 L capacity. The grains were ozonized at the concentration of 1.28 mg L-1, at 25 ºC, with gas flow rate of 5.0 L min-1. Saturation time and concentration, half-life time and physical properties such as apparent specific weight, actual specific weight, porosity, sphericity and circularity of each maize hybrid were determined. The experiments were conducted in a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Ozonation; Saturation concentration; Half-life time.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000400286

การลดเชื้อ Campylobacter jejuni ในซากไก่ด้วยคลอรีนและโอโซน
Provedor de dados: Thai Agricultural Research Repository
Autores: Panrapee Iamtaeweejarloen; Pravate Tuitemwong; Jirawat Kantakrienwong; Kooranee Tuitemwong.
Objectives of this study were to investigate the process sensitivity to Campylobacter spp. and to assess the reduction efficiency of ozonation and chlorination in chilling step of the poultry process using data derived from mCCDA plating and SimPlate MPN methods. Samples of 80 were collected from 4 process steps in the processing plant (scalding, plucking, inside outside washing, and chilling). Numbers of Campylobacter spp. on mCCDA at the respective steps were 3.35, 3.20, 2.68 and 0.20 logCFU/ml, while the SimPlate MPN had 2.54, 2.48, 2.31 and 0.84 log CFU/ml, respectively. Chilling is the most sensitive process to reduce the number of bacteria on both media. Chlorination at 1.5 ppm reduced Campylobacter spp. by 97.46% and 58.62% on mCCDA and SimPlate...
Tipo: Collection
Palavras-chave: Poultry process; Ozonation; Campylobacter spp.; MPN; Sensitivity; Chlorination; MCCDA; SimPlate; ไก่สด; การผลิตเนื้อไก่; คลอรีน; โอโซน; การลดเชื้อแบคทีเรีย; ความไว; การลดอุณหภูมิซาก.
Ano: 2010
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5234