Thiophene adsorbents and application thereof

Abstract

The invention provides thiophene adsorbents and a purification method for treating thiophene-containing wastewater by the same, and belongs to the technical field of water treatment. The thiophene adsorbents are a layered double hydroxide (ZnAL-CO3-LDH) and a modified product thereof (SDS-ZnAl-LDH). Experiments show that the two layered adsorbents have the thiophene removing rate of over 74 percent respectively. For example, under the meta-acid condition, the SDS-ZnAl-LDH has the thiophene removing rate of over 90 percent. The layered double hydroxide and the modified product thereof are applied to adsorbing the thiophene-containing wastewater, and can effectively remove the thiophene in the wastewater, so the invention provides feasible high-efficiency adsorbents for treating the thiophene-containing wastewater, which has valuable significance for purifying the thiophene-containing wastewater and protecting the environment.

Description

technical field

[0001] The invention belongs to the technical field of water treatment and provides a purification treatment agent for removing thiophene in aqueous solution and a treatment method thereof. Background technique

[0002] Thiophene exists in many wastewaters, such as coking wastewater, oil extraction and refining wastewater, dye industry wastewater, pharmaceutical industry wastewater and resin industry wastewater. Thiophene is a biologically toxic organic sulfide, which can synergistically enhance with other organic pollutants to increase its toxicity. If it is directly discharged into water without treatment, it will cause great harm to the environment.

[0003] Thiophene is the most stable five-membered heterocyclic compound containing one heteroatom. At present, the removal of thiophene in industrial applications mainly adopts adsorption, extraction and other means. Some scholars have tried many methods in order to deal with sulfur-containing wastewater, su...