Abstract: The invention relates to a method for preparing amorphous molybdenum oxide adsorption material and an application thereof. The invention aims to solve the technical problem of low recovery efficiency of silver ions in coexisting silver-containing wastewater in the prior art. The method of the present invention includes:1) preparation of electrolyte; and 2) subjecting to cyclic voltammetry. The amorphous molybdenum oxide adsorption material prepared by the present invention is used as an adsorbent for adsorbing and reducing silver ions in wastewater. The invention successfully prepares amorphous molybdenum oxide (MoOx) by cyclic voltammetry, which has a highly selective reduction adsorption for Ag+. Silver ions and the adsorbent MoOx could be subjected to redox reaction to remove silver ions in water. The removal efficiency of the silver ions in wastewater by the amorphous molybdenum oxide prepared by cyclic voltammetry of the invention is up to 99.85%.

Abstract: The invention relates to a method for preparing amorphous molybdenum oxide adsorption material and an application thereof. The invention aims to solve the technical problem of low recovery efficiency of silver ions in coexisting silver-containing wastewater in the prior art. The method of the present invention includes: 1) preparation of electrolyte; and 2) subjecting to cyclic voltammetry. The amorphous molybdenum oxide adsorption material prepared by the present invention is used as an adsorbent for adsorbing and reducing silver ions in wastewater. The invention successfully prepares amorphous molybdenum oxide (MoOx) by cyclic voltammetry, which has a highly selective reduction adsorption for Ag+. Silver ions and the adsorbent MoOx could be subjected to redox reaction to remove silver ions in water. The removal efficiency of the silver ions in wastewater by the amorphous molybdenum oxide prepared by cyclic voltammetry of the invention is up to 99.85%.

Abstract: A process for separate removal and recovery of heavy metals from industrial wastewater is provided. The wastewater to be treated flows through adsorbents after filtration and adjustment of a pH to about 3 to 7 to obtain the adsorbents which have adsorbed corresponding heavy-metal ions, which are then eluted from the corresponding adsorbents using an acidic solution such that eluates containing the corresponding heavy-metal ions are obtained.

Abstract: A process for separate removal and recovery of heavy metals from industrial wastewater is provided. The wastewater to be treated flows through adsorbents after filtration and adjustment of a pH to about 3 to 7 to obtain the adsorbents which have adsorbed corresponding heavy-metal ions, which are then eluted from the corresponding adsorbents using an acidic solution such that eluates containing the corresponding heavy-metal ions are obtained.

Abstract: Disclosed is a multi-tube biofilter system for treating waste gas. The multi-tube biofilter system includes a multi-tube biofilter and a nutrient solution supply system. The multi-tube biofilter includes an outer casing, at least two reticulated tubes disposed in the outer casing, a packing medium portion, and a nutrient solution spraying system. The outer casing is opened to define a gas inlet, a gas outlet, and a water outlet therein. The packing medium portion is attached to an outer surface of each of the reticulated tubes, wherein a liquid entering end of the nutrient solution spraying system is in communication with the nutrient solution supply system via a pipeline, and solution spraying ends of the nutrient solution spraying system face the reticulated tubes.

Abstract: Disclosed is a multi-tube biofilter system for treating waste gas. The multi-tube biofilter system includes a multi-tube biofilter and a nutrient solution supply system. The multi-tube biofilter includes an outer casing, at least two reticulated tubes disposed in the outer casing, a packing medium portion, and a nutrient solution spraying system. The outer casing is opened to define a gas inlet, a gas outlet, and a water outlet therein. The packing medium portion is attached to an outer surface of each of the reticulated tubes, wherein a liquid entering end of the nutrient solution spraying system is in communication with the nutrient solution supply system via a pipeline, and solution spraying ends of the nutrient solution spraying system face the reticulated tubes.