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The micro-morphology and metal elements composition of Inhalable particles (PM10) in Huaian typical zone were studied in this paper using scanning electronic microscopy (SEM) and inductively coupled plasma-atomic emission spectrometry (ICP-AES). PM10samples were collected for 24 h using high-volume air sampler from Qinghe zone. The SEM analysis showed that mineral particles with regular shapes were popular in PM10in Qinghe district. The composition of metal elements analysis showed that enrichment factor of Cr, Ni, Cu, Zn, Pb, Cd, As of are greater than 10, the results indicate that these elements mainly come from anthropogenic pollution. PM10in Huaian typical zone was more sourced from industrial pollution than other sources.

A new method is proposed to treat attapulgite by freeze-dying and heating process. The photos of Scanning Electron Microscopy (SEM) on treated attapulgite show higher dispersion properties. TG and DSC curves of raw attapulgite and treated attapulgite indicated the contents of adsorption water, zeolite water and complexing water in the treated attapulgite are less than that of raw attapulgite. The test results of Nickel adsorption indicated the adsorption mechanism could be better described by pseudo-second order model and the thermodynamic curve of adsorption could be described with Langmuir model.

Using Palygorskite as matrix, chitosan(CTS) as functional monomer, and introducing the ion-imprinting technique to the synthesis process, a new Cd2+-IIP was prepared for selective separation of Cd2+ from aqueous solution was prepared. The static method was adopted to study the adsorption capacity of Cd2+-IIP for Cd2+, and the effects of contact time, pH value, adsorbent dosage and temperature of the initial solution on the adsorption characters of Cd2+ were investigated. Experiment results indicated that the adsorption was rapid during the first 20 minuts and equilibrium were attained within 70 minutes. The Cd2+-IIP had higher adsorption capacity to Cd2+ than other different ions. There were less difference in the adsorption capacity between different dosages of Cd2+-IIP, but the adsorption capacity of Cd2+ adsorbed onto Cd2+-IIP decreased with increasing the dosages.Under the optimum conditions, the ions-imprinted polymer offered a fast adsorption of Cd2+ and the maximum capacity was 18.20 mg/g.

A new method is proposed to treat attapulgite by freeze-dying and heating process. The treated attapulgite presents good adsorption properties. The best adsorption conditions were studied by a series of tests on attapulgite’s adsorption on Cu2+ ion. The photos of Scanning Electron Microscopy (SEM) on treated attapulgite show the higher dispersion property, and the IR spectroscopy of treated attapulgite exhibits the lessening of adsorption water, zeolite water and coordinate water contents. At room temperature, the best adsorption conditions are pH = 4±0.2 and the solid to liquid ratio is about 3 g/L. After 40 min, the adsorption experiments achieved balance status, the most adsorption mass is about 39.43 mg/g.

Attapulgite is a natural rod-like nanomaterial. The surface of natural attapulgite nanoparticles was cleaned, modified with silane coupling agent 3-aminpropyltriethoxysilane (KH550). The structure and morphology of the modified attapulgite were characterized by infrared spectroscopy, scanning electron microscope (SEM). The methane absorption capacity of the modified attapulgite was recorded by intelligent gravimetric analyzer. SEM revealed that 3-aminpropyltriethoxysilane was modified on the surface of rod-like attapulgite nanoparticles. The 3-aminpropyltriethoxysilane can obviously increase the methane absorption capacity of the nanoparticles almost about twice. This result may provide the attapulgite nanoparticles a new way to industrial application.

By using Palygorskite as matrix and introducing the surface ion-imprinting concept to the synthesis process, a Palygorskite-supported organic–inorganic hybrid polymer for selective separation of Pb2+ from aqueous solutio was prepared. The prepared polymer was characterized with techniques of SEM, XRD and FT-IR. The effects of contact time, pH value and temperature of the initial solution on the adsorption characters of Pb2+ were investigated. Under the optimum conditions, the ions-imprinted polymer offered a fast kinetics for the adsorption of Pb2+ and the maximum capacity was 4.51 mg/g. And the pseudo-second order model bestly described the kinetics of adsorption of Pb2+ onto the as-prepared materials.

1, 10-phenanthroline and triethylamine modified palygorskites were prepared by microwave irradiation, and characterized with FT-IR technique. The effects of contact time, adsorbent dosage, and pH value of the initial solution on the adsorption characters of Mn2+ were investigated. The adsorption of Mn2+ from aqueous solutions using 1, 10-phenanthroline or triethylamine modified palygorskites were investigated. Experiment results indicated that 1,10-phenanthroline and triethylamine molecules have been successfully grafted to palygorskite. The adsorption was rapid during the first 5 minuts and equilibrium were attained within 60 minutes in the initial concentration of Mn2+ of 50 and 100 mg•L-1, and fast adsorption in the first 10 minutes and slowly increased with the contact time due to the adsorption of palygorskite. The 1, 10-phenanthroline modified palygorskites had higher adsorption capacity than triethylamine modified palygorskites. Compared with natural palggorskites, the Mn2+ ions adsorption capacities of palggorskite modified by 1, 10-phenanthroline or triethylamine were significantly improved. There were less difference in the adsorption capacity between different dasages of 1, 10-phenanthroline modified palygorskites, but the adsorption capacity of Mn2+ adsorbed onto triethylamine modified palygorskites decreased with increasing the dosages. A Lagergren pseudo-second order model best described the kinetics of adsorption of Mn2+ onto the modified palygorskites.