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This paper is based on the national \explore the possibility and potential as a source of abundant, low-cost new bio-adsorbent expect in the treatment of heavy metal pollution at the same time, to some extent, also be able to limit the harmful crazy spread of invasive plants, to control and use of combination win-win results. The main conclusions of this thesis are: 1) the Cu2, Cd2, Pb2 to invasive plants false from cocklebur (Iva xanthifolia) indoor pot experiment patience and Accumulation. Experimental results show that 1 mg · L-1 ~ 16 mg · L-1 of the Add Cu2 treatment and 0.5 mg L-1 to 14mg.L Add Cd2, Pb2 processing conditions, false cocklebur on Cu2 CD2, PB2 three kinds of single metal have a lot of patience and enrichment, heavy metal enrichment in ground and underground parts of plants were 607.59 mg · kg-1, 137.20 mg · kg-1, 468.37 mg · kg- 1,157.15 mg · kg-1, 404.38 mg · kg-1, 34.53 mg · kg-1, corresponding to the enrichment factor 11.39,12.62,4.18 transfer coefficient 4.43,2.98,11.71, and heavy metals in the law of the distribution of plants as follows: stem gt; leaf gt; roots, the aerial parts of accumulation is much larger than the underground part. The observations suggest that the characteristics of the leaves, plant height and biomass false cocklebur growth is not inhibited, in line with the basic characteristics of hyperaccumulators. 2) determine the false false cocklebur modified assay of cocklebur modified adsorbent preparation conditions: 0.1 mol L-1 NaOH solution swelling after 1h with citric acid esterification modified, citric acid concentration of metal ions esterification dosing for Cu2 to 1 mol · L-1; CD2 and PB2 to 0.2 mol L-1, reaction temperature of 70 ° C, contact time 1h. The main factors affecting the adsorption reaction the reaction time, pH value, concentration of the adsorbent, the concentration of heavy metal ions, and temperature. Cu2, Cd2, Pb2 optimum adsorption pH values ??were determined in the assay by 6.5-7,5-5.5 3-3.5. And the adsorption is a fast process, 60min saturated; adsorbent dosage in the range of 2.5-7.5gL-1 adsorption efficiency, handling heavy metal ion concentration of the water should be 500 mg · L-1 within the scope of . And three heavy metal ion adsorption process to meet the Langmuir and Freundlich equation, where the description of the Langmuir equation better than the Freundlich equation. The Iva xanthifolia adsorbent for the adsorption capacity of the three metal ions from strong to weak for Pb2 ??GT; Cu2 gt; Cd2; of Iva xanthifolia Cu2, Cd2, Pb2 adsorption is an endothermic reaction in a certain temperature range, and heating carry out the reaction. The main active substance is a carbohydrate and cellulose substances participating in the reaction; involved in the adsorption of the reactive functional group for-OH,-CONH2,-C = O, provides the adsorption sites for adsorption of heavy metal ions. A false cocklebur as biological adsorbent modified adsorption capacity obtained effectively improved, the modified false cocklebur three ion adsorption capacity of more than 90%, heavy metal removal rate increased by 30% compared to before modification PB2 removal, which raise the most obvious. According to the papers on various test data show that the false cocklebur forestry harmful invasive plants transformed into the new heavy metal biosorption material is very feasible and great potential. With the continuous development of science and technology, non-renewable energy is increasingly scarce, so the development of renewable cycle green new materials, new resources to the development of productivity, save energy, and create a harmonious living environment are essential. I hope to explore new ideas for the development of society through the practical conclusions of this paper can smoothly forward on the road of industrialization of ecological processes.
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