Adsorption Characteristics Of Chromium And Influencing Factors Of The Adsorption Of Added Organic Matters In Soil

The effects of the soil properties on its retention characteristics were discussed. Considering the differences of soil properties (thermostatical water bath shake, adsorption to Cr (VI) balance law determine), direct against soil the property difference,study different kinds of organic supplies indoors train terms under to soil Cr (VI) suck last influence of characteristic, explain source chromium influence factor of validity outside the soil further. The result shows: Soil PH, organic matter, rotten quality sour and oxide state to influence soil chromium suck, hold characteristic and other source chromium important element of validity.1.Yellow soil, brunisolic soil, lime soil adsorptioninmount in Cr (VI) increase with extension of time, reach the balance of adsorption in about 3 hours.2.Add the same density Cr (VI) standard liquid,Quaternary Period red clay to Cr (VI) adsorptioning amount the heaviest, it's adsorption Yellow soil 2.5 times, adsorption of Yellow soil brunisolic suck 2 times of holding etc.; Includes organic matter than high lime the soil only suck hold amount most low. adsorption available Langmuir model, Freundlich model, Temkin model describe model better with Langmuir among them.3.Yellow soil, brunisolic soil adsorption Cr (VI) characteristic receive basic physical and chemical of great impact property of soil, adsorption amount and soil free iron oxide rust content present positive correlation relation,as content organic shoulder relevant presenting, dip in grains of relevance of content relatively high with soil.4. Join the same density different pH chromium standard solution of value, Yellow soil and brunisolic soil 's adsorption in chromium rise and reduce with pH value, in pH3-7 adsorption amount with pH rising drop slow,in pH7-9 at adsorption amount with rising of pH drop suddenly.5.Organic supplies add behind the soil, soil free iron oxide rust and brilliant quality content of iron oxide rust rise non-, they role in yellow soil result greater than the brunisolic soil. Glucose /albumen peptone function result greater than maize straw and peat,organic supplies add amount...