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Wysłany: Pią 20:43, 31 Gru 2010
Temat postu: Mn Ce La wet air oxidation of phenol wastewater
Mn / Ce / La wet air oxidation of phenol wastewater treatment
In addition to rate of 47.7%: Using non-homogeneous Cu. Ni. Ce/SiO2 catalyst,
belstaff italia
, pH 7.0. Other conditions, CWPO imidacloprid pesticide wastewater on the same COD removal efficiency 89.1%. CWPO and WPO calculated based on the COD of the apparent activation energy of stage 1 were l1.2kJ/tool and 29.6kJ/tool. Wet hydrogen peroxide oxidation method for the treatment of pesticide wastewater provides a cost effective method. UV light. Coupled ultrasonic degradation of o-nitro phenol in aqueous solution Liu Xinyong Lin Fengkai such as \2,2008,6 l ---- 64 The effects of initial concentration, ultraviolet (UV) power, ultrasound (US) frequency and power, catalyst \various factors. Of UV light. Ultrasonic Degradation of o-nitro phenol coupling (ONP) solution effect. The results show that,
timberland portugal
, ONP UV. Apparent first order kinetics of ultrasonic degradation. With the increase of initial concentration, ONP degradation rate and removal rate were reduced. UV light. Coupled ultrasonic degradation is better than UV,
ugg italia
, ultrasonic degradation effect separately, there is a synergistic effect between the two. Reaction rate constants were: KUV / US = 0.0052rain ~, KUV = o. 0029miff, KUS = 0.0022rain \Increased UV power, ultrasonic frequency and power can promote the degradation of ONP. When the UV power is 150W, ultrasonic frequency is 165kHz, when the power is 100W, ONP degradation to achieve the best, 240min removal rate of 72.41%. The addition of catalyst to promote TIo2 ONP degradation. Optimization of the experimental dosage of 0.15g, L, ONP removal rate of 90.43%. In the case of catalyst. Lower pH value of the solution can increase the degradation rate; H202 dosing significantly increased the removal rate of ONP. Low-frequency ultrasound / internal electrolysis for the treatment of acid red B cleared Airlines and other waste water sub-JJ \No ... 22008,58 ~ 60 for weakly acidic conditions of low-frequency ultrasound, collaborative processing within the electrolysis of acid red B (AcidRedB.) feasibility study of the weak acid conditions, low frequency ultrasound, in electrolysis, and low-frequency ultrasound / Union within the electrolysis ARB use of wastewater treatment efficiency. The results showed that low frequency ultrasound treatment alone, ARB degrade slowly, after 10min after irradiation, ARB less than 4.7% removal: electrolysis within the slow rate of degradation of ARB. Reaction 10min,
belstaff uomo
, ARB's removal was only 49.9%; frequency ultrasound / degradation of the combined effects of electrolysis has obvious synergies ABR response 10min, ARB removal rate of 90. O% or more. First order reaction kinetics, at a frequency of 59kHz, power was 175W and 250w synergistic effect of ultrasound, ARB apparent degradation rate constant than the separate electrolysis were increased in 2.72 times and 3.38 times . The process is simple, fast, and has broad application prospects. Mn / Ce / La wet air oxidation of phenol wastewater treatment Zhigang Hu Xiaomin, etc. \2,2008,65 \reaction conditions on catalyst performance. With NaOH as precipitant, precipitate the mixed salt at room temperature aging 0.5h, 378K drying 12h, 873K roasting 1h, grinding to a diameter of 75m. Prepared Mn / Ce / La composite catalyst. Optimum ratio of catalyst n (Mn): n (Ce / La) = 5:5 (n (Ce): n (L (2:1). Be used in dealing with 2g / L (COD about 4760rag / L ) of phenol wastewater, ion release has been effectively controlled, COD removal efficiency of more than 98%. Na-type zeolite and its recycling iron and manganese removal methods such as Zhao Liang Yuan Bo Hu, \.33. No.1, 2008,
uggs bestellen
,65 \
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