Processing of honey two organophosphate pesticide content and macroporous resin adsorption removal study
|Course||Of Food Science|
|Keywords||Honey Chlorpyrifos Malathion Chloromycetin Macroporous resin Adsorption Thermodynamics Dynamics|
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 .