Study on Modified Zeolite for Thetreatmen to flow Concentration Ammonium from Water
Onthe basis of studying single factor for ammonia nitrogen(NH+4- N)treatment byNaCl modified zeolite,the adsorption isotherm and kinetic model of the adsorption process were analyzed.The experimental results show that under the best conditions forNaCl modified zeolite as room temperature(27℃),initial NH+4-N concentration 30 mg/L,solution pH 6,dosage 5 g/L and reaction time 90 min,the NH+4-N removal rate reached 90.7%,and the sorbent adsorption capacity was 8.97 mg/g. The adsorption process is more in line with the Langmuir isothermal model,with correlation coefficient 0.9973.The adsorption kinetics analysis showed that the adsorption of NH+4-N water by NaCl modified zeolite was more in accordance with the pseudo-second order kinetic model,with correlation coefficient 0.9988.
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万方数据
维普
