Dissertation
Dissertation > Agricultural Sciences > Livestock, animal medicine,hunting,silkworm,bee > Beekeeping,beneficial insects feeding > Bee products processing and utilization > Honey

Processing of honey two organophosphate pesticide content and macroporous resin adsorption removal study

Author ZhuQing
Tutor CaoZuo
School Northwestern University
Course Of Food Science
Keywords Honey Chlorpyrifos Malathion Chloromycetin Macroporous resin Adsorption Thermodynamics Dynamics
CLC S896.1
Type Master's thesis
Year 2010
Downloads 90
Quotes 2
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This study is a two pesticide residues in honey - chlorpyrifos and malathion content processing , and use of macroporous resin adsorption method of removal of malathion and chloramphenicol in honey research . The text is divided into four chapters , the author of the major work for the following three aspects : 1 to study the content of chlorpyrifos and malathion in the honey processing . The results showed that the honey processing a greater impact on the content of these two organophosphorus pesticides chlorpyrifos and malathion content decreased by 70% and 22.5% . Vacuum concentration step , two pesticides content decreased by 60.9% and 16.5% , respectively , followed by filtered . 2 on macroporous resin adsorption behavior of of malathion honey in thermodynamic study . The results show that : in the 298K , 308K and 318K concentration range , the LS -903 macroporous resin equilibrium adsorption data of honey malathion in good agreement with the Freundlich isotherm equation ; of malathion honey in LS -903 macroporous resin adsorption enthalpy is less than zero , indicating that the adsorption process is an exothermic process , low temperatures favor adsorption of free energy becomes ; LS -903 macroporous resin adsorption of malathion negative , indicating that the resin adsorption of malathion has a strong driving force , adsorption is a spontaneous reaction . 3 , the kinetics of chloramphenicol in honey on the macroporous resin adsorption behavior . Temperature , adsorption time and stirring speed and other factors on the adsorption process . The results show that the LS -903 macroporous resin adsorption rate of chloramphenicol in honey better meet the proposed second-order equation , of its fitting kinetic parameters k2 = 0.006 , qe = 17.48μg / g ; chlorine neomycin on the LS-903 resin adsorption process control steps for the film diffusion and particle diffusion process , the diffusion coefficient of 0.0015 and 0.0010 respectively .

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