A novel monolith ZnS-ZIF-8 adsorption material for ultraeffective Hg (II) capture from wastewater

A novel monolithic adsorption material (ZnS-ZIF-8) was well prepared by means of the functionalized filter paper and explored for Hg (II) capture in wastewater in this work. The novel monolith ZnS-ZIF-8 displayed outstanding capture efficiency toward Hg (II) in the solution containing competitive diverse metal ions within very short time. The adsorption behavior was well fitted with the Langmuir adsorption model and the maximum adsorption capacities for Hg (II) removal was up to 925.9 mg/g. The Hg (II) captured by ZnS-ZIF-8 can be reclaimed by elution with Na2S solution. The approach of this novel monolith adsorption material displayed the advantages of rapidity, simplicity, selectivity and could be expected to the development of a rapid and efficient device to purify Hg (II) from wastewater in form of the integration filter-adsorption column.