[Competitive adsorption between bromine and bromate on activated carbon and impact on bromate formation].

Regularity of adsorption removal for bromine and bromate in water has been tested by three different activated carbon. It is demonstrated that in single adsorbent solution adsorption removal rates for bromine and bromate is 69% and 88%, respectively. As for double adsorbent solution, the removal rate of bromine decreased to 10% and of bromate is higher than 60%.

[Degradation of endocrine disrupting chemicals(EDCs)-BP by combination of UV/ micro-aeration process and impact factors].

The removal performances of EDCs 4-tert-butylphenol (BP) in water using a new process UV/micro-aeration was introduced. The results show that UV/micro-aeration process is also an advanced oxidation and BP can be effectively degraded by UV/micro-aeration process; the degradation of BP by UV/micro-aeration process is greatly influenced by TOC value, BP initial concentrations, intensity of UV radiation, and initial pH of solution. The k1 value of BP degradation increases with TOC values decreasing,or with intensity of UV radiation increasing.

Removal of arsenic(V) from aqueous solutions using iron-oxide-coated modified activated carbon.

Removal of arsenic(V) from aqueous solutions was evaluated with the following three different sorption materials: coal-based activated carbon 12 x 40 (activated carbon), iron(II) oxide (FeO)/activated carbon-H, and iron oxide. The apparent characteristics and physical chemistry performances of these adsorbents were investigated by X-ray diffraction, nitrogen adsorption, and scanning electronic microscope. Also, batch experiments for arsenic removal were performed, and the effects of pH value on arsenic(V) removal were studied.

[Effects of organic pollutants in drinking water on the removal of dimethyl phthalate by advanced oxidation processes].

Humic acids were used to simulate natural organic compounds in water for the investigation of DMP oxidation by three different AOPs (advanced oxidation processes) of UV-H2O2, O3 and UV-O3. The results showed that pseudo-first-order reaction equation could describe the oxidation of DMP by UV-H2O2 perfectly, which was strongly affected humic acids in water. The relationship between pseudo-first-order reaction rate and TOC value could be expressed as K = 0.

[Impact of organic matter in water on the adsorption of EDCS (BPA) onto granular activated carbon (GAC) from the view of molecular weight distribution].

Impact of organic material with different molecular weight( MW) on the adsorption performance of endocrine disrupting chemicals(EDCs)--bisphenol A (BPA) in water on granular activated carbon (GAC) were investigated. Compared to the adsorption capacity in deionized water, the qm values of Langmuir of BPA-raw water, BPA-filtered water and BPA-effluents after ozonation solution decrease 29.95 % ,43.

[Effect of water quality on degradation of 17alpha-ethynyestradiol (EE2) by UV/H2O2 combination process].

Effect of pH, HA and anions HCO3-, NO3-, CO3(2-), Cl- and SO4(2-) in aqueous solution on the photodegradation of 17alpha-ethynyestradiol (EE2) was studied by using a batch photo-reactor. The results show that 17alpha-ethynyestradiol (EE2) could be removed effectively by the UV/H2O2 process. The rate of photodegradation in aqueous solution follows first-order kinetics.