Preparation method and application of sepiolite composite adsorbent loaded with nano zinc sulfide
A technology of nano-zinc sulfide and composite adsorption, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, can solve the problems of high activity, insufficient adsorption capacity, instability, etc., and achieve simple modification process, The effect of wide source of raw materials and wide promotion and application value
Inactive Publication Date: 2020-07-14
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI +1
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Abstract
The invention relates to a preparation method and application of a sepiolite composite adsorbent loaded with nano zinc sulfide, and belongs to the technical field of environmental protection. The preparation method comprises acid heat treatment of purified sepiolite and zinc sulfide modification of sepiolite subjected to acid heat treatment, i.e., sepiolite is pretreated through acid heat modification, and then nanoscale zinc sulfide is loaded through coprecipitation, so that the efficient heavy metal cadmium composite adsorbent is prepared. The adsorbent obtained by the invention combines theadvantages of high adsorption capacity of nano zinc sulfide and rich pore structure of sepiolite, and cadmium ions in a water body are efficiently removed mainly by generating a solid solution ZnxCd1-xS (x (1). The preparation method disclosed by the invention is simple, low in production cost, high in removal rate of cadmium in wastewater and low in desorption rate, can be used as an adsorbent or a passivator for heavy metal cadmium in water and soil, and has a good application prospect.
Application Domain
Other chemical processesWater contaminants +1
Technology Topic
Pre treatmentCadmium ion +6
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