nitrify
1.A test for the adsorption of chromium-ion with the nitrify lignite has been carried out. The capacities of lignite, adsorption kinetics, adsorption models and the ef-fect of pH were studied. The results indicated that the nitrify lignite had good adsorption properties to chromium-ion and the adsorption isotherms were consistant with Langmuir equation.
2.Based on the current analysis, the paper put forward the countermeasures, which included strengthening the consciousness of environmental protection and the monitoring and management of the soil fertilizer, using organic fertilizer, popularizing the technology of applying fertilizer, using the nitrify inhibitor, improving the way of using chemical fertilizer.

