Effects of extracellular polymeric substances on aerobic granulation in sequencing batch reactors.

abstract：:Heterogeneous catalytic ozonation was emerged to be a promising alternative in the mineralization of various persistent organic pollutants in recent decades. Magnetic pyrite cinder (PyC), which was employed as the catalyst in our investigation, was further deposited by Ce (Ce-PyC) to enhance its catalytic activity in ...

journal_title：Chemosphere

authors： Wu D,Liu Y,He H,Zhang Y

更新日期：2016-07-01 00:00:00

abstract：:This study investigated the possible effects of a commonly used foliar herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) formulation on medulla spinalis of lebistes. Fish were exposed to 2,4-D (15, 30, 45 mg L(-1)), behavioral changes were monitored. Fish were fixed, histopathological examination was carried out on sec...

journal_title：Chemosphere

authors： Uyanikgil Y,Yalçinkaya M,Ateş U,Baka M,Karakişi H

更新日期：2009-09-01 00:00:00

abstract：:Nowadays, more and more attention is focused on the environmental harm brought by the wide production and use of carbon nanotubes. In this study, the metabolic function of sediment microbial community was investigated after unfunctionalized or functionalized multi-walled carbon nanotubes (MWCNTs) were incorporated. Th...

journal_title：Chemosphere

authors： Song B,Zeng Z,Zeng G,Gong J,Xiao R,Chen M,Tang X,Ye S,Shen M

更新日期：2021-01-01 00:00:00

abstract：:Naphthenic acids (NAs), a class of structurally diverse carboxylic acids with often complex ring structures and large aliphatic tail groups, are important by-products of many petrochemical processes including the oil sands mining activity of Northern Alberta. While it is evident that NAs have both acute and chronic ha...

journal_title：Chemosphere

authors： Johnston CU,Clothier LN,Quesnel DM,Gieg LM,Chua G,Hermann PM,Wildering WC

更新日期：2017-02-01 00:00:00

abstract：:Chemical kinetics of trichloroethene (TCE) degradation by pyrite was investigated at different experimental conditions. The TCE was transformed into C2H2, 1,1-dichloroethene (DCE) and C2H4 by a slow process (240 h required to convert TCE by 80%). Thereafter, the degradation rate showed a monotonous increase with the p...

journal_title：Chemosphere

authors： Weerasooriya R,Dharmasena B

更新日期：2001-02-01 00:00:00

abstract：:This work deals with a new abiotic oxidation process designed as a suitable pre-treatment step within a biological depuration of wastewater containing phenol or its derivatives (o-cresol, 2-chlorophenol and p-nitrophenol) or aniline. The reaction was carried out in a stirred tank reactor at 20 degrees C and atmospheri...

journal_title：Chemosphere

authors： Sanchez I,Stüber F,Font J,Fortuny A,Fabregat A,Bengoa C

更新日期：2007-06-01 00:00:00

abstract：:Di-(2-ethylhexyl) phthalate (DEHP) is one of the most important environmental pollutants and affects multiple pathways upon human exposure. DEHP could induce MCF-7 cell proliferation at a very low dose; however, the possible linkage between DEHP and the cell proliferation effect is still unclear. Here, we carried out ...

journal_title：Chemosphere

authors： Lu YS,Yao GX,Wang XL,Liu JX,Yu J,Qiu J,Li Y,Qian YZ,Xu YY

更新日期：2020-09-01 00:00:00

abstract：:This paper analyzes the detoxification mechanisms adopted by amino- and organic acids to alleviate Cd toxicity. In addition, with our published data on Zn-Cd interactions, the influence of Zn (200 microM) supplements on the detoxification mechanisms of amino- and organic acids have also been studied. The experimental ...

journal_title：Chemosphere

authors： Aravind P,Prasad MN

更新日期：2005-12-01 00:00:00

abstract：:In order to understand the sources and fate of polychlorinated biphenyls (PCBs) in several species of benthic biota, including clams (Corbicula fluminea), oligochaetes (Lumbriculus variegatus), and mussels (Margaritifera falcata and Anodonta nuttalliana) at the Portland Harbor Superfund Site (PHSS), their congener fin...

journal_title：Chemosphere

authors： Rodenburg LA,Delistraty DA

更新日期：2019-05-01 00:00:00

abstract：:Arsenic (As)-polluted groundwater constitutes a serious problem for peanut plants, as roots can accumulate the metalloid in their edible parts. Characterization of stress responses to As may help to detect potential risks and identify mechanisms of tolerance, being the induction of oxidative stress a key feature. Fift...

journal_title：Chemosphere

authors： Bianucci E,Furlan A,Tordable MDC,Hernández LE,Carpena-Ruiz RO,Castro S

更新日期：2017-08-01 00:00:00

abstract：:The effects of Tween-20, a non-ionic surfactant, and Zn (II) on microbial activity and removal performance for ethylbenzene in a biotrickling filter (BTF) were evaluated. Batch experiments were conducted to evaluate the surfactant and Zn (II) at various concentrations for their toxicity to microorganisms, and results ...

journal_title：Chemosphere

authors： Wang L,Yang C,Cheng Y,Huang J,He H,Zeng G,Lu L

更新日期：2013-11-01 00:00:00

abstract：:The content of phthalate esters (PAEs) was investigated in 36 vegetable fields with plastic film mulching in Shandong Peninsula, East China. Soils at depths of 0-10 cm, 10-20 cm, and 20-40 cm were collected, and 16 PAEs were analyzed by gas chromatography-mass spectrometry. PAEs were detected in all the analyzed sampl...

journal_title：Chemosphere

authors： Li K,Ma D,Wu J,Chai C,Shi Y

更新日期：2016-12-01 00:00:00

abstract：:A recent development in analytical chemistry has enabled us to monitor systemic organophosphorus insecticide (OP) exposure at individual levels. At present, however, limited data are currently available on urinary OP metabolite levels worldwide. The purpose of this study was to assess urinary dialkylphosphate (DAP) co...

journal_title：Chemosphere

authors： Ueyama J,Saito I,Kondo T,Taki T,Kimata A,Saito S,Ito Y,Murata K,Iwata T,Gotoh M,Shibata E,Wakusawa S,Kamijima M

更新日期：2012-06-01 00:00:00

abstract：:As a carcinogenic byproduct in drinking water treatment, bromate has raised global concerns on environmental and health hazard, calling for effective treatments. In the current work, a novel reduced graphene oxide supported polyaniline/WO2.72 nanobelt-flower (RGO/PANI/WO2.72) ternary composite was prepared through a s...

journal_title：Chemosphere

authors： Zhao X,You Y,Huang S,Cheng F,Chen P,Li H,Zhang Y

更新日期：2019-05-01 00:00:00

abstract：:An extracellular H2O2-requiring Remazol Brilliant Blue R (RBBR) decolorizing enzyme activity was detected after cultivation of cells of various plant species both in liquid medium and when growing on agar plates containing RBBR. Level of the enzyme activity was compared with the ability to metabolize polychlorinated b...

journal_title：Chemosphere

authors： Chroma L,Macek T,Demnerova K,Macková M

更新日期：2002-11-01 00:00:00

abstract：:This study evaluated the effect of humic acid (HA) on physicochemical properties of bacterial surfaces and on mass transfer of polycyclic aromatic hydrocarbons (PAHs) from aqueous phase into intracellular bacteria. Due to this process' potential for bacterial degradation, using Sphingobium sp. PHE3, degradation of phe...

journal_title：Chemosphere

authors： Xie Y,Gu Z,Herath HMSK,Gu M,He C,Wang F,Jiang X,Zhang J,Zhang Y

更新日期：2017-10-01 00:00:00

abstract：:Carboxylic graphene oxide (GO-COOH) is decorated with akaganeite (β-FeOOH) to produce a β-FeOOH@GO-COOH nanocomposite. The nanocomposite acts as an efficient adsorption medium for the uptake of arsenite and arsenate within a wide range of pH 3-10, providing high adsorption capacities of 77.5mgg(-1) for As(III) and 45....

journal_title：Chemosphere

authors： Chen ML,Sun Y,Huo CB,Liu C,Wang JH

更新日期：2015-07-01 00:00:00

abstract：:In this work a novel heterogeneous Fenton system based on Fe(0)/Fe3O4 composites is described. The composites with several Fe(0)/Fe3O4 ratios were prepared by two different methods, i.e. mechanical alloying of Fe(0) and Fe3O4 powders and controlled reduction of Fe3O4 with H2. Reaction studies and detailed Conversion E...

journal_title：Chemosphere

authors： Moura FC,Araujo MH,Costa RC,Fabris JD,Ardisson JD,Macedo WA,Lago RM

更新日期：2005-08-01 00:00:00

abstract：:Fetal overexposure to active glucocorticoid (GC) is the major cause for fetal growth restriction (FGR). This study investigated the influences of cadmium (Cd) exposure on active GC and its mechanism in placental trophoblasts. Pregnant mice were exposed to CdCl2 (4.5 mg/kg, i.p.). Human JEG-3 cells were treated with Cd...

journal_title：Chemosphere

authors： Shi XT,Zhu HL,Xiong YW,Liu WB,Zhou GX,Cao XL,Yi SJ,Dai LM,Zhang C,Gao L,Xu DX,Wang H

更新日期：2020-09-01 00:00:00

abstract：:The phytoextraction of Zn may be improved by applying N fertilizers to increase the biomass and Zn content of shoots. Rhizosphere-pH change from uptake of different N forms will affect Zn phyto-availability in the rhizosphere and Zn phytoextraction. This glasshouse study examined the effect of N form on Zn phytoextrac...

journal_title：Chemosphere

authors： Monsant AC,Tang C,Baker AJ

更新日期：2008-10-01 00:00:00

abstract：:Samples of riverine and coastal, filtered (filter pore size 0.2 microm) water were exposed to short-term sunlight irradiation which reduced their absorbance in the UV and visible regions. Absorbance losses in coastal chromophoric dissolved organic matter (CDOM) were up to 10-fold smaller than those in riverine CDOM. A...

journal_title：Chemosphere

authors： Grzybowski W

更新日期：2000-06-01 00:00:00

abstract：:Effluent organic matter (EfOM) in bio-treated wastewater generally has negative impacts on advanced wastewater treatment processes. Thus, a comprehensive characterization of EfOM would help determine feasibility of wastewater treatment. The aim of this work was to characterize EfOM originating from four coking wastewa...

journal_title：Chemosphere

authors： Yang W,Wang J,Hua M,Zhang Y,Shi X

更新日期：2018-07-01 00:00:00

abstract：:Cyclic volatile methylsiloxanes (cVMS) are widely used in consumer products and commonly detected in the environment. There are challenges in the analysis of cVMS because of their ubiquitous use which can introduce high background contamination. The current study introduces a sample preparation method based on headspa...

journal_title：Chemosphere

authors： Zhang L,Jiang R,Li W,Muir DCG,Zeng EY

更新日期：2020-07-01 00:00:00

abstract：:Although antibiotics have been used in large quantities for some decades, until recently the existence of these substances in the environment has received little notice. It is only in recent years that a more complex investigation of antibiotic substances has been undertaken in order to permit an assessment of the env...

journal_title：Chemosphere

authors： Kümmerer K

更新日期：2009-04-01 00:00:00

abstract：:A novel technique has been used for the temporally resolved investigation of the interaction of laser radiation and soot in a flame. Based on established soot vaporisation models we developed a framework to calculate the two-colour four-wave mixing signal obtained in an acetylene/air diffusion flame at atmospheric pre...

journal_title：Chemosphere

authors： Hemmerling B,Stampanoni-Panariello A

更新日期：2001-02-01 00:00:00

abstract：:Although on-line chemical cleaning has been extensively employed for maintaining the MBR permeability, little attention has been given to the negative impacts of such prevalent membrane cleaning practice. This study thus comparatively investigated the potential release of dissolved organic matter (DOM) from activated ...

journal_title：Chemosphere

authors： Cai W,Liu Y

更新日期：2018-02-01 00:00:00

abstract：:Ammonia emissions are found in a wide range of facilities such as wastewater treatment plants, composting plants, pig houses, as well as the fertilizer, food and metallurgy industries. Effective management of these emissions is important for minimizing the detrimental effects they can have on health and the environmen...

journal_title：Chemosphere

authors： Morral E,Gabriel D,Dorado AD,Gamisans X

更新日期：2020-10-15 00:00:00

abstract：:The first national-scale assessment of chromium (Cr) contamination in China's agricultural soils was performed based on 1625 sites analysed with 1799 previously published papers. Spatial and temporal variations were assessed, and the ecological risk was estimated. The range of Cr concentrations in farmland soil is 1.4...

journal_title：Chemosphere

authors： Li X,Zhang J,Ma J,Liu Q,Shi T,Gong Y,Yang S,Wu Y

更新日期：2020-10-01 00:00:00

abstract：:In this study, the importance of Sb behavior under different pH conditions has been addressed with respect to its stabilization in aqueous solutions using Mg-Fe layered double hydroxides (LDHs). The Sb(V) adsorption onto Mg-Fe LDHs was performed at different initial Sb(V) concentrations and pH values (pH 5.5, 6.5 and ...

journal_title：Chemosphere

authors： Hudcová B,Erben M,Vítková M,Komárek M

更新日期：2019-08-01 00:00:00

abstract：:There is a need for indoor measurements of nitrate radicals (NO(3)) and nitrogen pentoxide (N(2)O(5)) to better understand removal and transformation of volatile organic compounds in indoor environments, and to evaluate the possible health effects from exposure to nitrated reaction products. NO(3) and NO(2) react to f...

journal_title：Chemosphere

authors： Nøjgaard JK

更新日期：2010-05-01 00:00:00