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| 1 | Bromate ion formation in dark chlorination and ultraviolet/chlorination processes for bromide-containing water显示文摘Bormate (BrO3 ?) carcinogenic 化学药品在包含溴化物的水的 ozonation 或氯化被生产。尽管它在海水与或没有日光的形成以前被调查了,使与臬化合在的形成冲淡答案,为水处理植物的特别地未加工的水,是未知的。在这篇文章,凳子的结果放大测试测量使与臬化合形成的形成率在冲淡包括从长江的电离 de 的水和未加工的水,解决方案在黑暗氯化被介绍并且紫外(紫外)/chlorination 进程。并且起始的 pH, NaOCl 的起始的集中,和在冲淡的答案的 UV/chlorination 的使与臬化合形成上的紫外光强的效果被调查。可检测的使与臬化合与相对慢的生产率在二件水样品的黑暗氯化被形成。在消毒条件的常规下面,形成的使与臬化合的数量不是可能的超过国家标准(10 μ g /L ) 。紫外照耀提高了免费的氯的腐烂,并且,同时, 6.6%32% Br 吗?被氧化到 BrO3 ? 。并且使与臬化合的形成展出了三个舞台:快速的舞台,慢舞台和高原。在试验性的条件下面(pH = 4.41 11.07, CCl2= 1.23 4.50 mg/L ) ,低 pH 和高氯集中赞成了使与臬化合的产生。高光强支持了使与臬化合的生产率,但是减少它的全部的产生数量由于氯分解的加速。 | HUANG Xin GAO Naiyun DENG Yang | 2008 | Journal of Environmental Sciences2008，20，2： | 11 |
| 2 | Pre-oxidation with KMnO4 changes extra-cellular organic matter's secretion characteristics to improve algal removal by coagulation with a low dosage of polyaluminium chloride显示文摘Microcystis aeruginosa was used to study the effect of KMnO4 pre-oxidation on algal removal through coagulation with polyaluminium chloride (PAC).KMnO4 pre-oxidation improved the coagulation efficiency of algal at a low dosage of PAC.The optimal KMnO4 feeding period was in the stationary growth phase of Microcystis aeruginosa.KMnO4 traumatized the algal cells and stimulated cellular release of organic matter,contributing to the pool of extra-cellular organic matter (EOM).KMnO4 also decomposed EOM,especially small molecular weight EOM.Lower concentrations of KMnO4,such as 2 mg/L,induced algae cells to produce moderate amounts of new EOM with molecular weights of 11,280,and 1500 kDa.These relatively large molecules combined easily with PAC,promoting coagulation and removal of algae.High concentrations of KMnO4 lysed algae cells and produced much high-molecular-weight EOM that did not enhance flocculation by PAC at lower dosages. | Lei Wang Junlian Qiao Yinghui Hu Lei Wang Long Zhang Qiaoli Zhou Naiyun Gao | 2013 | Journal of Environmental Sciences2013，25，3： | 10 |
| 3 | Degradation of bisphenol-A using ultrasonic irradiation assisted by low-concentration hydrogen peroxide显示文摘This study investigated the degradation of bisphenol-A (BPA) by ultrasonic irradiation in the presence of different additives (H2O2,air bubbles and humic acid) under various operating conditions,i.e.,ultrasonic frequency,power intensity and power density.The results demonstrated that the BPA degradation followed pseudo first-order kinetics under different experimental conditions.The optimum power intensities were 0.9,1.8,and 3.0W/cm 2 at the frequencies of 400,670,and 800 kHz,respectively.At the fixed frequency (800 kHz),the degradation rate of BPA was shown proportional to the increase of power density applied.With this manner,the BPA sonolysis could be facilitated at H2O2 dosage being lower than 0.1 mmol/L;while BPA degradation was hindered at H2O2 concentration in excess of 1 mmol/L.Additionally,BPA removal was shown to be inhibited by the presence of aeration and humic acid during ultrasonic irradiation.The present study suggested that the degradation rate of BPA assisted by ultrasonic irradiation was influenced by a variety of factors,and high BPA removal rate could be achieved under appropriate conditions. | Kejia Zhang Naiyun Gao Yang Deng Tsair Fuh Lin Yan Ma Lei Li Minghao Sui | 2011 | Journal of Environmental Sciences2011，23，1： | 9 |
| 4 | Characterization of typical taste and odor compounds formed by Microcystis aeruginosa显示文摘Production and characteristics of typical taste and odor (T&O) compounds by Microcystis aeruginosa were investigated. A few terpenoid chemicals, including 2-MIB, β-cyclocitral, and β-ionone, and a few sulfur compounds, such as dimethyl sulfide and dimethyl trisulfide, were detected. β-Cyclocitral and β-carotene concentrations were observed to be relevant to the growth phases of Microcystis. During the stable growth phase, 41-865 fg/cell of β-cyclocitral were found in the laboratory culture. β-Cyclocitral concentrations correlated closely with β-carotene concentrations, with the correlation coefficient R2 = 0.96, as it is formed from the cleavage reaction of β-carotene. For dead cell cases, a high concentration of dimethyl trisulfide was detected at 3.48-6.37 fg/cell. Four T&O compounds, including β-cyclocitral, β-ionone, heptanal and dimethyl trisulfide, were tested and found to be able to inhibit and damage Microcystis cells to varying degrees. Among these chemicals, β-cyclocitral has the strongest ability to quickly rupture cells. | Kejia Zhang Tsair Fuh Lin Tuqiao Zhang Cong Li Naiyun Gao | 2013 | Journal of Environmental Sciences2013，25，8： | 8 |
| 5 | Perchlorate removal using granular activated carbon supported iron compounds: Synthesis, characterization and reactivity显示文摘Synthesis and use of the iron compounds supported on granular activated carbon (ICs/GAC) have shown significant environmental implications for perchlorate (ClO 4 ) removal. ICs/GAC was synthesized via hydrolyzing FeSO 4 ·7H 2 O on GAC, reduced by NaBH 4 solution in polyethylene glycol 6000 and ethanol solution, dried in vacuum condition and exposed to air. Synthesized ICs/GAC was characterized using transmission electron micrograph (TEM), Brunauer-Emmett-Teller, X-ray photoelectron spectroscopy (XPS). ICs/GAC was determined to be containing a large amount of FeOHSO 4 , Fe 2 O 3 and a small amount of zero-valent iron (ZVI) nanoparticles according to TEM and XPS measurements. Batch static kinetic tests showed that 97% of ClO 4 was removed within 10 hr at 90°C and 86% of ClO 4 was removed within 12 hr at 25°C, at ICs/GAC dosage of 20 g/L. The experimental results also showed that FeOHSO 4 and Fe 2 O 3 nanoparticles have the function of perchlorate adsorption and play important roles in ClO 4 removal. The activation energy (E a ) was determined to be 9.56 kJ/mol. | Jianhong Xu Naiyun Gao Yulin Tang Yang Deng Minhao Sui | 2010 | Journal of Environmental Sciences2010，22，11： | 8 |
| 6 | Detection of geosmin and 2-methylisoborneol by liquid-liquid extraction-gas chromatograph mass spectrum (LLE-GCMS) and solid phase extraction-gas chromatograph mass spectrum (SPE-GCMS)显示文摘Two sample preparation methods were introduced and compared in this paper to establish a simple,quick and exact analysis of geosmin and 2-methylisoborneol.LC-18 column was employed in solid phase extraction(SPE),1.0 mL of hexane was adopted in liquid-liquid extraction(LLE),and the extracts were analyzed by gas chromatograph mass spectrum(GCMS)in selected ion mode.Mean recoveries of SPE were low for 2-methylisoborneol(2-MIB)and geosmin(GSM)with values below 50%.For LLE,the recoveries were satisfyingly above 50%for 2-MIB and 80%for GSM.Detection limits of the LLE method were as low as 1.0 ng/L for GSM and 5.0 ng/L for 2-MIB.A year-long investigation on odor chemicals of drinking water in Shanghai demonstrated that in the summer,there was a serious odor problem induced by a high concentration of 2-MIB.The highest concentration of 152.82 ng/L appeared in July in raw water,while GSM flocculation was minimal with concentrations below odor threshold. | MA Xiaoyan GAO Naiyun CHEN Beibei LI Qingsong ZHANG Qiaoli GU Guofen | 2007 | Frontiers of Environmental Science & Engineering2007，1，3： | 7 |
| 7 | Characteristics and model studies for fluoride and arsenic adsorption on goethite显示文摘Fluoride and arsenic are major anionic elements of concern in drinking water treatment. The effects of contact time, pH, surface loading and ionic strength on adsorption of fluoride and As(V) were investigated using batch methods. Adsorption of fluoride and As(V) onto goethite obeyed a pseudo second-order rate law. Through experimental data and adsorption kinetic analysis, the affinity of As(V) onto goethite was stronger than fluoride. Fluoride and As(V) uptake by goethite all decreased with pH increasing at the same surface loading; however, ionic strength had slight influence on their adsorption. A surface sites-species model was used to quantify the adsorption of fluoride and As(V) onto goethite as function of pH and surface loading. This model can satisfactorily predict their adsorption characteristics with several adsorption constants. | Yulin Tang Jianmin Wang Naiyun Gao | 2010 | Journal of Environmental Sciences2010，22，11： | 7 |
| 8 | Photochemical degradation of typical halogenated herbicide 2,4-D in drinking water with UV/H_(2)O_(2)/micro-aeration显示文摘UV/H2O2/micro-aeration is a newly developed process based on UV/H2O2. Halogenated pesticide 2,4-dichlorophenoxyacetic acid (2,4-D) photochemical degradation in aqueous solution was studied under various solution conditions. The UV intensity,initial 2,4-D concentrations and solution temperature varied from 183.6 to 1048.7 μW·cm-2,from 59.2 to 300.0 μg·L-1 and from 15 to 30℃,respectively. The concentration of hydrogen peroxide (H2O2) and pH ranged from 0 to 50 mg·L-1 and 5 to 9,and different water quality solutions (tap water,distilled water and deionized water) were examined in this study. With initial concentration of about 100 μg·L-1,more than 95.6% of 2,4-D can be removed in 90 min at intensity of UV radiation of 843.9 μW·cm-2,H2O2 dosage of 20 mg·L-1,pH 7 and room temperature. The removal efficiency of 2,4-D by UV/H2O2/micro-aeration process is better than UV/H2O2 process. The photodecomposition of 2,4-D in aqueous solution follows pseudo-first-order kinetics. 2,4-D is greatly affected by UV irradation intensity,H2O2 dosage,initial 2,4-D concentration and water quality solutions,but it appears to be slightly influenced by pH and temperature. There is a linear relationship between rate constant k and UV intensity and initial H2O2 concentration,which indicates that higher removal capacity can be achieved by the improvement of these factors. Finally,a preliminary cost analysis reveals that UV/H2O2/micro-aeration process is more cost-effective than the UV/H2O2 process in the removal of 2,4-D from drinking water. | CHU WenHai GAO NaiYun LI Chong CUI Jing | 2009 | Science China Chemistry2009，52，12： | 5 |
| 9 | Removal of phenol by powdered activated carbon adsorption显示文摘 | Yan MA Naiyun GAO Wenhai CHU Cong LI | 2013 | Frontiers of Environmental Science & Engineering2013，7，2： | 2 |
| 10 | Adsorption of humic acid from aqueous solution on bilayer hexadecyltrimethyl ammonium bromide-modified zeolite显示文摘Surfactant-modified natural zeolites(SMNZ)with different coverage types were prepared by loading hexadecyltrimethyl ammonium bromide(HTAB)onto the surface of a natural zeolite.The adsorption behavior of humic acid(HA)on SMNZ was investigated.Results indicate that the adsorbent SMNZ exhibited a higher affinity toward HA than the natural zeolite.HA removal efficiency by SMNZ increased with HTAB loading.Coexisting Ca2+in solution favored HA adsorption onto SMNZ.Adsorption capacity decreased with an increasing solution pH.For typical SMNZ with bilayer HTAB coverage,HA adsorption process is well described by a pseudo-second-order kinetic model.The experimental isotherm data fitted well with the Langmuir model.Calculated maximum HA adsorption capacities for SMNZ with bilayer HTAB coverage at pH 5.5 and 7.5 were 63 and 41 mg·g^(-1),respectively.E2/E3(absorbance at 250 nm to that at 365 nm)and E4/E6(absorbance at 465 nm to that at 665 nm)ratios of the residual HA in solution were lower than that of the original HA solution.This indicates that the HA fractions with high polar functional groups,low molecular weight(MW),and aromaticity had a stronger tendency for adsorption onto SMNZ with bilayer HTAB coverage.Results show that HTABmodified natural zeolite is a promising adsorbent for removal of HA from aqueous solution. | Yanhui ZHAN Jianwei LIN Yanling QIU Naiyun GAO Zhiliang ZHU | 2011 | Frontiers of Environmental Science & Engineering2011，5，1： | 2 |
| 11 | Adsorption of perchlorate from aqueous solution by the calcination product of Mg/(A1-Fe) hydrotalcite-like compounds显示文摘 | Yang Yiqiong Gao Naiyun Chu Wenhai | 2012 | Journal of Hazardous Materials2012，，： | 1 |
| 12 | Ozone–biological activated carbon integrated treatment for removal of precursors of halogenated nitrogenous disinfection by-products显示文摘 | Wenhai Chu Naiyun Gao Daqiang Yin Yang Deng Michael R. Templeton | 2011 | Chemosphere2011，，11： | 1 |
| 13 | Ozone-biological activated carbon integrated treatment for removal of precursors of halogenated nitrogenous disinfection by-products 显示文摘 | Wenhai Chu Naiyun Gao Daqiang Yin | 2012 | Chemosphere2012，86，： | 1 |
| 14 | Characterization of intracellular & extracellular algae organic matters (AOM) of Microcystic aeruginosa and formation of AOM-associated disinfection byproducts and odor & taste compounds显示文摘 | LI Lei GAO Naiyun DENG Yang | 2012 | Water Research2012，46，4： | 1 |
| 15 | Mechanistic studies of Microcystic aeruginosa inactivation and degradation by UV-C irradiation and chlorination with poly-synchronous analyses显示文摘 | OU Huase GAO Naiyun DENG Yang | 2011 | Desalination2011，272，13： | 1 |
| 16 | Formation of nitrogenous disinfection by -products from pre -chlo- ramination显示文摘 | Chu Wenhai Gao Naiyun Deng Yang | 2011 | Chemosphere2011，85，7： | 1 |
| 17 | Formation of halogenated C - , N - DBPs from chlor (am) ination and UV irradiation of tyrosine in drinking water显示文摘 | Chu Wenhai Gao Naiyun Krasner S W | 2012 | Envi- ronmental Pollution2012，161，： | 1 |
| 18 | Fluoride adsorption onto activated alumina: Modeling the effects of pH and some competing ions显示文摘 | Yulin Tang Xiaohong Guan Tingzhi Su Naiyun Gao Jianmin Wang | 2008 | Colloids and Surfaces A: Physicochemical and Engineering Aspects2008，，1： | 1 |
| 19 | Enhanced adsorption of humic acid on amine functionalized magnetic mesoporous composite microspheres显示文摘 | Yulin Tang Song Liang Shuili Yu Naiyun Gao Jun Zhang Haicheng Guo Yilong Wang | 2012 | Colloids and Surfaces A: Physicochemical and Engineering Aspects2012，，： | 1 |
| 20 | Inactivation and degradation of Microcystis aeruginosa by UV-C irradiation显示文摘 | Huase Ou Naiyun Gao Yang Deng Hao Wang Haixuan Zhang | 2011 | Chemosphere2011，，7： | 1 |
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