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   adsorption of humic acid on multi-walled carbon nanotubes  
   
نویسنده abedi zahra ,mehrasbi mohammad reza ,assadi ali
منبع journal of human, environment and health promotion - 2017 - دوره : 2 - شماره : 4 - صفحه:253 -260
چکیده    background: natural organic matters (noms) have the main role in formation of trihalomethanes. these compounds are in natural water sources due to biological activities. in the presented study, adsorption and separation of humic acid as an index of natural organic matters using multiwalled carbon nanotubes is evaluated.methods: the experiments were carried out in bath adsorption reactors with different concentrations of humic acid. the effects of ph, adsorbent dose, national concentrations of humic acid and contact time as study variables were tested in separated experiments, as well as, kinetic and isotherm models of the adsorption process were determined.results: the results showed that the adsorption follows freundlich isotherm model and pseudo secondorder kinetic equation. the removal percent of humic acid reached to higher than 90% with dosage of 1g/l of nanotube.conclusion: adsorption of humic acid from water by multiwalled carbon nanotubes is an efficient alternative pretreatment method in water treatment plants.
کلیدواژه adsorption ,nanotube ,humic acid ,water
آدرس zanjan university of medical sciences, school of public health, department of environmental health, ایران, zanjan university of medical sciences, school of public health, department of environmental health, ایران, zanjan university of medical sciences, school of public health, department of environmental health, ایران
پست الکترونیکی assadi@ zums.ac.ir
 
 

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