Study On The Adsorption Of Diuron Residues In Soil Biological Carbon

The application of biochar in the soil is very rich,it can not only change the nature of the soil,enrich the soil microbial community,but also play an effective role in reducing greenhouse gas.This paper focuses on the factors affecting the ratio of surface area and the adsorption capacity of pollutants to biochar,Caragana,walnut shell,stone,bamboo for the preparation of bio carbon as raw materials.To choose reasonable preparation of bio carbon material and its surface area requirements.The selected target as the research of biological carbon in soil pollutants with diuron as research object to study the adsorption effect and lock detection.Biomass carbon agriculture is a very important significance as an important branch of agriculture.In the soil mixed with biomass carbon can also be used as a material for soil improvement,can greatly promote the growth of crops.After the same experimental conditions,the specific surface area of biochar prepared by the above raw materials was measured by the specific surface and pore size analyzer,and the specific surface area of 102.4793m2/g was obtained By biological activated carbon specific surface area of 17.3881m2/g,the specific surface area of walnut shell was 59.8108m2/g,the specific surface area of bamboo biochar was 15.3871m2/g.It can be concluded that the specific surface area of Caragana korshinskii is larger.The above four kinds of materials suitable for the preparation of biochar as raw material is caragana biochar adsorption of diuron residues in the soil behind the test.The specific surface area and pore size analyzer to test various biological carbon materials prepared by surface area,under the same experimental condition in this experiment,choice of date,Caragana,walnut shell and bamboo and other common use value is relatively low and the resource reserves are abundant raw materials rich.Through soil column leaching experiment in this experiment to study the soil biochar locking effect on adsorption of diuron in soil,through the parallel experiment control,soil diuron to further study the biological effect of locking containing carbon.Through the study of the above theoretical knowledge,combined with the experiment,we can draw the following conclusions.First,adding biochar in the soil in the experiment done,properties of soil system has been greatly improved,the effect played an important role in the adsorption of diuron on soil,and can be found with the increasing amount of biochar added in soil the adsorption fixation effect is also increasing,Second,the experiment found that when soil added biochar particle size was smaller compared to the addition of large size biochar soil,the adsorption capacity of biochar on soil pollutants will be enhanced,indirectly proved that the particle size affects the adsorption effect of biochar,and the particle size is small adsorption effect will increase.In order to transfer more effective in the control of diuron soil,smaller particles in the soil by adding biochar diuron adsorption fixed effect will be more obvious,the north area of Shanxi Province,upland soil pollution is serious,through the above experimental research,improve the soil adsorption of pollutants effectively,promote the growth of crops,the the research has very important significance for pollution control of soil in different degree.