|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | High-performance size exclusion chromatography with a multi-wavelength absorbance detector study on dissolved organic matter characterisation along a water distribution system显示文摘This study examined the associations between dissolved organic matter(DOM) characteristics and potential nitrification occurrence in the presence of chloramine along a drinking water distribution system. High-performance size exclusion chromatography(HPSEC) coupled with a multiple wavelength detector(200–280 nm) was employed to characterise DOM by molecular weight distribution, bacterial activity was analysed using flow cytometry, and a package of simple analytical tools, such as dissolved organic carbon, absorbance at 254 nm, nitrate,nitrite, ammonia and total disinfectant residual were also applied and their applicability to indicate water quality changes in distribution systems were also evaluated. Results showed that multi-wavelength HPSEC analysis was useful to provide information about DOM character while changes in molecule weight profiles at wavelengths less than 230 nm were also able to be related to other water quality parameters. Correct selection of the UV wavelengths can be an important factor for providing appropriate indicators associated with different DOM compositions. DOM molecular weight in the range of 0.2–0.5 k Da measured at210 nm correlated positively with oxidised nitrogen concentration(r = 0.99), and the concentrations of active bacterial cells in the distribution system(r = 0.85). Our study also showed that the changes of DOM character and bacterial cells were significant in those sampling points that had decreases in total disinfectant residual. HPSEC-UV measured at210 nm and flow cytometry can detect the changes of low molecular weight of DOM and bacterial levels, respectively, when nitrification occurred within the chloraminated distribution system. | Huiping Huang Emma Sawade David Cook Christopher W.K.Chow Mary Drikas Bo Jin | 2016 | Journal of Environmental Sciences2016，28，6： | 7 |
| 2 | Removal of bentazone from micro-polluted water using MIEX resin:Kinetics,equilibrium,and mechanism显示文摘The contamination of surface and ground water by bentazone has attracted increasing global concern in recent years.We conducted a detailed investigation using MIEX resin to eliminate bentazone from waters.Batch experiments were carried out to evaluate the effect of process parameters,such as retention time,resin amount,and initial pesticide concentration,on removal efficiency of bentazone.Results showed the sorption process was fast and bentazone could be efficiently removed in 30 minutes.The kinetic process of bentazone sorption on MIEX resin was well described by pseudo second-order model and intraparticle diffusion was the rate controlling step.The MIEX resin possessed the highest sorption capacity of 0.2656 mmol/mL for bentazone according to Langmuir fitting.Bentazone is a hydrophobic ionizable organic compound,and both ionic charge and hydrophobic aromatic structure governed the sorption characteristics on MIEX resin.The different removal efficiencies of ionic and non-ionic pesticides,combined with the charge balance equations of bentazone,SO 4 2,NO 3 and Cl,indicated that removal of bentazone using MIEX resin occurred primarily via ion exchange. | Zequn Liu Xiaomin Yan Mary Drikas Danong Zhou DongshengWang Min Yang Jiuhui Qu | 2011 | Journal of Environmental Sciences2011，23，3： | 6 |
| 3 | Influence of coagulation mechanisms and floc formation on filterability显示文摘Minimizing particles in water is a key goal for improving drinking water quality and safety.The media filtration process,as the last step of the solid–liquid separation process,is largely influenced by the characteristics of flocs,which are formed and controlled within the coagulation process.In a laboratory-based study,the impacts of the physical characteristics of flocs formed using aluminum sulfate on the filtration treatment of two comparative water samples were investigated using a photometric dispersion analyzer and a filterability apparatus.In general,the optimum dosage for maximizing filterability was higher than that for minimizing turbidity under neutral p H conditions.For a monomeric aluminum-based coagulant,the charge neutralization mechanism produced better floc characteristics,including floc growth speed and size,than the sweep flocculation mechanism.In addition,the charge neutralization mechanism showed better performance compared to sweep flocculation in terms of DOC removal and floc filterability improvement for both waters,and showed superiority in turbidity removal only when the raw water had high turbidity.For the different mechanisms,the ways that floc characteristics impacted on floc filterability also differed.The low variation in floc size distribution obtained under the charge neutralization mechanism resulted in the flocs being amenable to removal by filtration processes.For the sweep flocculation mechanism,increasing the floc size improved the settling ability of flocs,resulting in higher filter efficiency. | Ruyuan Jiao Rolando Fabris Christopher W.K.Chow Mary Drikas John van Leeuwen Dongsheng Wang Zhizhen Xu | 2017 | Journal of Environmental Sciences2017，29，7： | 6 |
| 4 | Prediction of DOM removal of low specific UV absorbance surface waters using HPSEC combined with peak fitting显示文摘High performance size exclusion chromatography (HPSEC) is used in water quality research primarily to determine the molecular weight distribution of the dissolved organic matter (DOM), but by applying peak fitting to the chromatogram, this technique can also be used as a tool to model and predict DOM removal. Six low specific UV absorbance (SUVA) source waters were treated using coagulation with alum and both the source and treated water samples were analysed using HPSEC. By comparing the molecular weight profiles of the source and treated waters, it was established that several DOM components were not effectively removed by alum coagulation even after high dosage alum treatment. A peak-fitting technique was applied based on the concept of linking the character (molecular weight profile) of the recalcitrant organics in the treated water with those of the source water. This was then applied to predict DOM treatability by determining the areas of the peaks which were assigned to removable organics from the source water molecular weight profile after peak fitting, and this technique quantified the removable and non-removable organics. The prediction was compared with the actual dissolved organic carbon (DOC) removal determined from jar testing and showed good agreement, with variance between 2% and 10%. This confirmed that this prediction approach, which was originally developed for high SUVA waters, can also be applied successfully to predict DOC removal in low SUVA waters. | Linan Xing Rolando Fabris W.K.Chow John van Leeuwen Mary Drikas Dongsheng Wang | 2012 | Journal of Environmental Sciences2012，24，7： | 4 |
| 5 | Influence of characterised nature organic material on activated carbon adsorption: effect on pore volume distribution and adsorption of 2-methylisoborneol 显示文摘 | NEWCOMBE G DRIKAS M HAYES R | 1997 | Water Research1997，31，： | 1 |
| 6 | Chemical regeneration of granular active carbon from an operating water treatment plant显示文摘 | Newconbe G Drikas M | 1993 | Wat Res1993，27，1： | 1 |
| 7 | A rapid fracfionation technique to characterize natural organic matter for the optimization of water treatment processes 显示文摘 | Christopher W K Chow Rolando Fabris Mary Drikas | 2004 | Journal of Water Supply: Research and Technology-AQUA2004，，： | 1 |
| 8 | A rapid fractionation technique to characterise natural organic matter for the optimisation of water treatment processes显示文摘 | Fabris R Drikas M | 2004 | J Water SRT-Aqua2004，53，2： | 1 |
| 9 | A case study of treatment performance and organic character显示文摘 | Fabris R Drikas M | 2005 | J Water SRT-Aqua2005，54，6： | 1 |
| 10 | Granular activated carbon:importance of surface properties in the adsorption of naturally occurring organics显示文摘 | Newcombe G Hayes R Drikas M | 1993 | Colloids and Surfaces A1993，78，13： | 1 |
| 11 | Removal of MIB and geosmin using granular activated carbon with and without MIEX pre-treatment 显示文摘 | Drikas M Dixon M Morran J | 2009 | Water Research2009，43，20： | 1 |
| 12 | A rapid fractionationtechnique to characterize natural organic matter for theoptimisation of water treatment processes显示文摘 | Chow C W K Fabris R Drikas M | 2004 | Journal of WaterSupply2004，53，2： | 1 |
| 13 | The impact of conventional water treatment process on cells of the cyanobacterium microcystis aeruginosa显示文摘 | Chow C W K Drikas M House J | 1999 | Water Res1999，33，15： | 1 |
| 14 | Using coagulation, flocculation, and settling to remove toxic cyanobacteria显示文摘 | Chow CWK House J | 2001 | JAWWA 02/2001，，： | 1 |
| 15 | The quality and frequency of mothertoddler conflict : Links with attachment and temperament 显示文摘 | Deborah L Tia P Drika M | 2008 | Child Development2008，79，2： | 1 |
| 16 | Microcystin-LR adsorption by powdered activated carbon 显示文摘 | Drikas M Hayes R | 1994 | Water Research1994，28，8： | 1 |
| 17 | The impact of recalcitrant organic character on disinfection stability,trihalomethane formation and bacterial regrowth:an evaluation of magnetic ion exchange(MIEX) and alum coagulation显示文摘 | Drikas M Chow C W K Cook D | 2003 | Journal of Water Supply:Research and Technology2003，52，7： | 1 |
| 18 | Using coagulation, flocculation , and settling to remove toxic cyanobacteria 显示文摘 | Drikas M Chow C W K Ho use J | 2001 | JAWWA2001，，： | 1 |
| 19 | Removal of MIB and geosminusing granular activated carbon with and without MIEXpre-treatment显示文摘 | Drikas M Dixon M Morran J | 2009 | Water Research2009，43，20： | 1 |
| 20 | The Impact of Conventional Water Treatment Processes on Cells of the Cyanobacterium Microcystis Aeruginosa显示文摘 | Drikas M Housea J | 1999 | Wat Res1999，33，15： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员