Showing papers by "Deli Wu published in 2015"
TL;DR: In this paper, the authors used spinel nanoparticles (NPs) synthesized using a solvothermal method to activate peroxymonosulfate (PMS) with sulfamethazine (SMZ) as the target pollutant.
256 citations
TL;DR: In this article, a combination of Fe 3+ and FeS 2 /H 2 O 2 system was used to enhance the degradation of chloramphenicol (CAP) by promoting the synergetic effect between the Fe3+ and the FeS2, and the kinetic models to elucidate the reaction mechanisms were validated.
35 citations
TL;DR: In this paper, structural Fe(II) associated with ferrous hydroxy complex (FHC) was performed in a batch reactor to remove nitrite from a batch of ammonium.
25 citations
TL;DR: Benefit analysis showed the best economy of the pyrolysis parameters 450°C, 75 min, 3°C”min−1 and MC of 10%, which may serve as a microporous liquid adsorbent, while the bio-oil may Serve as a low grade fuel oil after upgrading it with conventional fuel oil and deacidification.
Abstract: Bio-oils were produced from pyrolysis of sewage sludge in a horizontal tubular furnace under the anoxic or anaerobic conditions, by varying operating parameters and moisture content (MC) of the feedstock. Physicochemical properties of the obtained bio-oil (such as density, acid value, kinematical viscosity, high heating value and flash point) were analysed and compared with Chinese fuel standards. Tend, RT and β were found critical to control the yield and physico-chemical properties of bio-oil products. The relative importance of various parameters such as Tend, RT, β and MC was determined and the optimum values for the lowest kinematic viscosity and acid value and the highest yield of the bio-oil were achieved using the orthogonal matrix method. The parameters 550°C, 45 min, 5°C min−1 and MC of 10% were found effective in producing the bio-oils with most of the desirable physico-chemical properties and yield. Benefit analysis was conducted to further optimize the operating parameters, considering pyroly...
12 citations
TL;DR: The results explain that pyrite acts as a 'bond' between Fe3+ and H2O2, and this pathway continues to form •OH and inhibit the quenching reaction, therefore, p Pyrite-catalyzed reactions would proceed even in low concentrations of H2 O2.
5 citations
TL;DR: It was found that the target compound could hardly be debrominated by FHC alone and Cu2+, Ag+, or Pd2+ had a significant promotion effect on the catalytic reactivity of structural FeⅡ on 2,5-DBA reduction.
Abstract: The ferrous hydroxy complex (FHC), composed of structural FeⅡ, has been shown to reduce a range of organic and inorganic contaminants. This study focused on the catalytic effects of Cu2+, Ag+, or Pd2+ on the reactivity of FHC suspensions towards 2,5-debromination (2,5-DBA). It was found that the target compound (2,5-DBA, 50 mg/L) could hardly be debrominated by FHC alone. However, Cu2+, Ag+, or Pd2+ had a significant promotion effect on the catalytic reactivity of structural FeⅡ on 2,5-DBA reduction. Pd2+ exhibited the best catalytic activity followed by Ag+ and Cu2+ in this study and the reductive debromination by Pd/FHC and Ag/FHC followed the pseudo-first-order kinetic model. Products distribution was highly dependent on the metal ions used. A reaction pathway was proposed in which the by-products were produced by hydrogenolysis and the elution order of bromines depended on the metal ions used. The enhanced reduction of 2,5-DBA by FHC suspensions modified by metal ions may prove useful in the developme...
4 citations