| Along with the continuous development of China’s economic construction and social aswell as the speeding up of urbanization,industrial and agricultural production and people’sliving environment caused by heavy metal pollution is increasingly serious.which in additionto have been seriously on mercury, cadmium, lead, chromium and metals the biologicaltoxicity of severe heavy metals such as arsenic, in recent years, including a certain toxicity ofheavy metals such as zinc, copper, nickel, cobalt and other harm to environment has arousedpeople’s attention. Among them by tanning, electroplating and zinc salt production wastewater discharge, caused harm to environment is also larger zinc pollution. Heavy metal zincand industrial sludge in sewage treatment and sludge life one of the major elements of heavymetal exceeds bid, as well as other heavy metal pollution, pollution of zinc deposit is rich inthe human body and animal and plant body gathered, the serious influence and harm thehealth of human body and the growth of plants and animals. Therefore, in today’s society ofzinc in the environment pollution management must also mentioned the important agenda.This study used which has the function of adsorption of heavy metal sodium lignin sulfonate,was prepared by nanometer technology of nano sodium lignosulphonate agents, to a greaterextent to improve the utilization rate of heavy metal ions adsorption rate and the preparationof, reduce the usage of adsorption material, reduce the burden and costs of environmentalgovernance, at the same time as the product of governance after farm has provided thebeneficial exploration and research.Main research work is as follows:(1) The preparation of nanometer sodiumlignosulphonate preparation, research is mainly focused on the ratio of the quality of thesodium lignosulphonate and STPP, magnetic stirring time, time, pH of reaction system,ultrasonic cavitation, selection of suitable temperature, etc.;(2) With a laser pen, scanningelectron electron microscopy (sem), Fourier transform infrared spectrometer and other nanosodium lignosulphonate preparations for the characterization of morphological structure;Nano sodium lignosulphonate (3) Preparation of Zn2+adsorption performance research,comparison and observation and the nano sodium lignosulphonate preparations for theadsorption performance and effect of Zn2+;(4) The use of nanotechnology and the nano ligninsulfonic acid sodium adsorption Zn2+processing fluid.processing of wheat and mungbeanseeds, zinc ions was studied under stress, for the wheat and the impact of mung bean germination and seedling growth.The results show that:(1) The optimum reaction conditions of the preparation ofnanometer sodium lignosulphonate as, when the adsorption pH value is6, the temperature is50℃, the adsorption time of5h, the adsorption properties of Zn2+best, and the preparationof nanometer adsorbent performance for both fine granular, uniform dispersion, particle sizeof about20nm~60nm range;(2) Under the same conditions, adsorption in the nanopreparation than in nanometer original agent.(3) Through the seedling stage of wheat, mungbean test found that the effect of nanometer zinc sodium lignosulphonate to relieve stress isbetter than that of the nano preparation, work best when addition amount to30ml;(4) Theappropriate concentration of nano lignin sulfonic acid sodium adsorption treatment, of wheat,mung bean seedling germination rate, root length, shoot length effect compared with thecontrol group have obvious promoting effect, chlorophyll content increases, the effect isbetter than that of mung bean seedling of wheat seedlings.(5) The study found that sodiumlignosulphonate has the effect that the role of plant growth promoters, measured at the sametime of nanometer sodium lignosulphonate preparation processing plant seedlings, the growthis not expected to enhance the effect, for the future to develop organic agriculture and greenagriculture production, the development of environmentally friendly growth regulatorprovides inspirational exploration. |
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