Optimization of isotherm models for pesticide sorption on biopolymer-nanoclay composite by error analysis.


:A carboxy methyl cellulose-nano organoclay (nano montmorillonite modified with 35-45 wt % dimethyl dialkyl (C14-C18) amine (DMDA)) composite was prepared by solution intercalation method. The prepared composite was characterized by infrared spectroscopy (FTIR), X-Ray diffraction spectroscopy (XRD) and scanning electron microscopy (SEM). The composite was utilized for its pesticide sorption efficiency for atrazine, imidacloprid and thiamethoxam. The sorption data was fitted into Langmuir and Freundlich isotherms using linear and non linear methods. The linear regression method suggested best fitting of sorption data into Type II Langmuir and Freundlich isotherms. In order to avoid the bias resulting from linearization, seven different error parameters were also analyzed by non linear regression method. The non linear error analysis suggested that the sorption data fitted well into Langmuir model rather than in Freundlich model. The maximum sorption capacity, Q0 (μg/g) was given by imidacloprid (2000) followed by thiamethoxam (1667) and atrazine (1429). The study suggests that the degree of determination of linear regression alone cannot be used for comparing the best fitting of Langmuir and Freundlich models and non-linear error analysis needs to be done to avoid inaccurate results.






Narayanan N,Gupta S,Gajbhiye VT,Manjaiah KM




Has Abstract


2017-04-01 00:00:00












  • Inefficiency of Mycobacterium chlorophenolicum PCP-1 to enhance mineralization of pentachlorophenol in soil microcosms.

    abstract::We examined the mineralization of pentachlorophenol (PCP) in sterile and non-sterile soil with or without added bacteria (Mycobacterium chlorophenolicum PCP-1). The soil used had no history of PCP contamination. Microcosms (30 g dry weight of soil) were incubated with labelled PCP (6.76% 13C, a non-radioactive stable ...


    pub_type: 杂志文章


    authors: Combrisson J,Monrozier LJ

    更新日期:1999-03-01 00:00:00

  • Distribution of phthalate esters in agricultural soil with plastic film mulching in Shandong Peninsula, East China.

    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...


    pub_type: 杂志文章


    authors: Li K,Ma D,Wu J,Chai C,Shi Y

    更新日期:2016-12-01 00:00:00

  • Porous walnut-like La2O2CO3 derived from metal-organic frameworks for arsenate removal: A study of kinetics, isotherms, and mechanism.

    abstract::Exploration of renewable materials for efficient elimination of arsenic from water is highly imperative. Herein, one kind of novel porous walnut-like La2O2CO3 composite is reported for the first time, fabricated via direct pyrolysis of La-MOFs at 550 °C under the air atmosphere. The as-synthesized material predominant...


    pub_type: 杂志文章


    authors: Huo JB,Yu G,Xu L,Fu ML

    更新日期:2020-12-31 00:00:00

  • Treatment of coking wastewater by an advanced Fenton oxidation process using iron powder and hydrogen peroxide.

    abstract::In this study the treatment of coking wastewater was investigated by an advanced Fenton oxidation process using iron powder and hydrogen peroxide. Particular attention was paid to the effect of initial pH, dosage of H(2)O(2) and to improvement in biodegradation. The results showed that higher COD and total phenol remo...


    pub_type: 杂志文章


    authors: Chu L,Wang J,Dong J,Liu H,Sun X

    更新日期:2012-01-01 00:00:00

  • (Eco)toxicity and biodegradability of protic ionic liquids.

    abstract::Ionic liquids (ILs) are often claimed to be "environmentally friendly" compounds however, the knowledge of their potential toxicity towards different organisms and trophic levels is still limited, in particular when protic ionic liquids (PILs) are addressed. This study aims to evaluate the toxicity against various mic...


    pub_type: 杂志文章


    authors: Oliveira MV,Vidal BT,Melo CM,de Miranda Rde C,Soares CM,Coutinho JA,Ventura SP,Mattedi S,Lima ÁS

    更新日期:2016-03-01 00:00:00

  • Dynamics of selected pre-existing polybrominated diphenylethers (PBDEs) in municipal wastewater sludge under anaerobic conditions.

    abstract::Despite the rapid, widespread accumulation of polybrominated diphenylethers (PBDEs) in our surroundings, their environmental fate has been largely unknown. In the present study, most common congeners (BDE 47, 99, 100, 138, 153, 154, 183 and 209) were investigated for their dynamics in municipal sewage sludge under mes...


    pub_type: 杂志文章


    authors: Shin M,Duncan B,Seto P,Falletta P,Lee DY

    更新日期:2010-03-01 00:00:00

  • Investigation of the sorption of 17α-ethynylestradiol (EE2) on soils formed under aerobic and anaerobic conditions.

    abstract::A study was conducted on the sorption of 17α-ethynylestradiol (EE2) on five soils formed under different redox conditions: an Arenosol (A_20) with fully aerobic conditions, two Gleysol samples (G_20 and G_40) with suboxic and anoxic conditions and two Histosols (H_20 and H_80) with mostly anoxic conditions. The soils ...


    pub_type: 杂志文章


    authors: Szabó L,Vancsik A,Király C,Ringer M,Kondor A,Jakab G,Szalai Z,Filep T

    更新日期:2020-02-01 00:00:00

  • Characterization of haze episodes and factors contributing to their formation using a panel model.

    abstract::A haze episode is a complex pollution process with high levels of fine particulate matter smaller than 2.5 μm (PM2.5). Understanding factors contributing to their formation is crucial to mitigate PM2.5 pollution, which varies substantially on the daily and city scales. In this study, we attempted to introduce the dyna...


    pub_type: 杂志文章


    authors: Zhang X,Wu Y,Gu B

    更新日期:2016-04-01 00:00:00

  • Rapid and sensitive on-line monitoring 6 different kinds of volatile organic compounds in aqueous samples by spray inlet proton transfer reaction mass spectrometry (SI-PTR-MS).

    abstract::Rapid and sensitive monitoring of volatile organic compounds (VOCs) in aqueous samples is very important to human health and environmental protection. In this study, an on-line spray inlet proton transfer reaction mass spectrometry (SI-PTR-MS) method was developed for the rapid and sensitive monitoring of 6 different ...


    pub_type: 杂志文章


    authors: Zou X,Kang M,Wang H,Huang C,Shen C,Chu Y

    更新日期:2017-06-01 00:00:00

  • Arsenic release from arsenic-bearing Fe-Mn binary oxide: effects of E(h) condition.

    abstract::Ferric and manganese binary oxide (FMBO) has been successfully used to remediate arsenic-polluted river, but there still lacks sufficient data to evaluate its effects on environments. The release behaviors of iron (Fe), manganese (Mn), and arsenic (As) in different E(h) ranges were investigated for As-bearing FMBO sed...


    pub_type: 杂志文章


    authors: Xu W,Wang H,Liu R,Zhao X,Qu J

    更新日期:2011-05-01 00:00:00

  • Passive samplers versus surfactant extraction for the evaluation of PAH availability in sediments with variable levels of contamination.

    abstract::The purpose of this study was to test the efficiency of passive solid samplers, polyoxymethylene (POM) strips and polydimethylsiloxane (PDMS) silicon tubing, to predict the bioavailability of native PAHs in contaminated sediments. Results were compared with worm bioaccumulation data and solid/liquid extraction using t...


    pub_type: 杂志文章


    authors: Barthe M,Pelletier E,Breedveld GD,Cornelissen G

    更新日期:2008-04-01 00:00:00

  • Maternal exposure to TCDD during gestation advanced sensory-motor development, but induced impairments of spatial learning and memory in adult male rat offspring.

    abstract::2,3,7,8-Tetrachlorodibenzo-p-Dioxin (TCDD) is an endocrine disrupting chemical (EDC) with high persistency. Even a low amount can pass the placental barrier during gestational exposure. Exposure to TCDD exposure can impair the development of the nervous system in children, leading to impaired learning ability in later...


    pub_type: 杂志文章


    authors: Zhang HJ,Liu YN,Xian P,Ma J,Sun YW,Chen JS,Chen X,Tang NJ

    更新日期:2018-12-01 00:00:00

  • Direct photolysis of MeO-PBDEs in water and methanol: focusing on cyclization product MeO-PBDFs.

    abstract::Polybrominated diphenyl ethers (PBDEs) and hydroxylated PBDEs can transform into polybrominated dibenzofurans (PBDFs) via photocyclization. However, it is unclear whether methoxylated PBDEs (MeO-PBDEs) can photocyclize to form MeO-PBDFs. In this study, 5-MeO-BDE-47, 5'-MeO-BDE-99 and 6-MeO-BDE-85 were selected as mode...


    pub_type: 杂志文章


    authors: Xue W,Chen J,Xie Q,Zhao H

    更新日期:2015-11-01 00:00:00

  • Degradation of aniline by electrochemical activation of peroxydisulfate at MWCNT cathode: The proofed concept of nonradical oxidation process.

    abstract::Enhanced elimination of aniline in aqueous solution was achieved by coupling electrosorption of aniline and electrochemical activation of peroxydisulfate (PDS) at multi-walled carbon nanotube (MWCNT) cathode, in which a synergistic effect occurred. It was found that PDS could be effectively activated under a small vol...


    pub_type: 杂志文章


    authors: Nie C,Ao Z,Duan X,Wang C,Wang S,An T

    更新日期:2018-09-01 00:00:00

  • Occurrence of pharmaceutically active and non-steroidal estrogenic compounds in three different wastewater recycling schemes in Australia.

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    pub_type: 杂志文章


    authors: Al-Rifai JH,Gabelish CL,Schäfer AI

    更新日期:2007-10-01 00:00:00

  • Comparison of polyurethane foam and biodegradable polymer as carriers in moving bed biofilm reactor for treating wastewater with a low C/N ratio.

    abstract::This paper presents a comparison between two different materials used as carriers: inert polyurethane (PU) foam and biodegradable polymer polycaprolactone (PCL) particles for the removal of organics and nitrogen from wastewater with a low C/N ratio using moving bed biofilm reactors. The results, during a monitoring pe...


    pub_type: 杂志文章


    authors: Chu L,Wang J

    更新日期:2011-03-01 00:00:00

  • Origin and fate of nanoparticles in marine water - Preliminary results.

    abstract::The number, morphology and elemental composition of nanoparticles (<100 nm) in marine water was investigated using Variable Pressure Scanning Electron Microscopy (VP-SEM) and Energy-dispersive X-ray spectroscopy (EDS). Preliminary research conducted in the Baltic Sea showed that the number of nanoparticles in seawater...


    pub_type: 杂志文章


    authors: Graca B,Zgrundo A,Zakrzewska D,Rzodkiewicz M,Karczewski J

    更新日期:2018-09-01 00:00:00

  • MCLR-induced PP2A inhibition and subsequent Rac1 inactivation and hyperphosphorylation of cytoskeleton-associated proteins are involved in cytoskeleton rearrangement in SMMC-7721 human liver cancer cell line.

    abstract::Cyanobacteria-derived toxin microcystin-LR (MCLR) has been widely investigated in its effects on normal cells, there is little information concerning its effects on cancer cells. In the present study, the SMMC-7721 human liver cancer cell line treated with MCLR was used to investigate the change of PP2A, cytoskeleton ...


    pub_type: 杂志文章


    authors: Wang H,Liu J,Lin S,Wang B,Xing M,Guo Z,Xu L

    更新日期:2014-10-01 00:00:00

  • Current levels of airborne polyfluorinated telomers in Japan.

    abstract::Fluorotelomer alcohols (FTOHs), a class of per- and poly-fluorochemicals (PFCs), are environmental contaminants characterized by high volatility and are therefore prone to long-range atmospheric transport. In this study, airborne FTOHs were identified in Japan using a newly developed passive air sampler containing act...


    pub_type: 杂志文章


    authors: Oono S,Harada KH,Mahmoud MA,Inoue K,Koizumi A

    更新日期:2008-10-01 00:00:00

  • Differential absorbance study of interactions between europium, soil and aquatic NOM and model compounds.

    abstract::This study compared the binding of europium by soil and aquatic natural organic matter (NOM) exemplified by Pahokee Peat humic acid (PPHA) and Northern Reservoir NOM, respectively. NOM/Eu3+ interactions were measured based on the differential absorbance approach. The experimental results show that the binding of Eu3+ ...


    pub_type: 杂志文章


    authors: Chen Y,Fabbricino M,Luongo V,Korshin GV

    更新日期:2019-11-01 00:00:00

  • Adsorption of phosphate on iron-coated sand granules as a robust end-of-pipe purification strategy in the horticulture sector.

    abstract::Nutrient enrichment in water bodies, and its detrimental consequences, are a well known and worldwide environmental problem. Agricultural activities are identified as an important source of diffuse losses of phosphate and nitrate because of the leaching out fertilizers from agricultural fields. This study encompasses ...


    pub_type: 杂志文章


    authors: Lambert N,Van Aken P,Van den Broeck R,Dewil R

    更新日期:2021-03-01 00:00:00

  • Variable dual carbon-bromine stable isotope fractionation during enzyme-catalyzed reductive dehalogenation of brominated ethenes.

    abstract::The potential of compound-specific stable isotope analysis (CSIA) to characterize biotransformation of brominated organic compounds (BOCs) was assessed and compared to chlorinated analogues. Sulfurospirillum multivorans and Desulfitobacterium hafniense PCE-S catalyzed the dehalogenation of tribromoethene (TBE) to eith...


    pub_type: 杂志文章


    authors: Woods A,Kuntze K,Gelman F,Halicz L,Nijenhuis I

    更新日期:2018-01-01 00:00:00

  • A preliminary risk assessment of trace elements accumulated in fish to the Indo-Pacific Humpback dolphin (Sousa chinensis) in the northwestern waters of Hong Kong.

    abstract::In order to assess the potential risks associated with consumption of contaminated prey items to the Indo-Pacific Humpback dolphin (Sousa chinensis), fish species (Collichthys lucida, Pseudosciaena crocea, Johnius sp., Thryssa sp., Mugil sp. and Trichiurus sp.) representing the main food items of the dolphin were coll...


    pub_type: 杂志文章


    authors: Hung CL,So MK,Connell DW,Fung CN,Lam MH,Nicholson S,Richardson BJ,Lam PK

    更新日期:2004-08-01 00:00:00

  • Application of microwave extraction for the evaluation of bioavailability of rare earth elements in soils.

    abstract::A single microwave extraction procedure was conducted to investigate the bioavailability of rare earth elements (REEs) by using different extractants of 0.05 M EDTA, 0.10 M CH3COOH, 0.10 M HCl, and 0.05 M CaCl2. The experimental conditions of heating time and microwave power were optimized. A microwave power of 60% an...


    pub_type: 杂志文章


    authors: Lu A,Zhang S,Shan XQ,Wang S,Wang Z

    更新日期:2003-12-01 00:00:00

  • Removal of polycyclic musks by anaerobic membrane bioreactor: biodegradation, biosorption, and enantioselectivity.

    abstract::This study aims to investigate the performance of anaerobic membrane bioreactor (AnMBR) for removing five polycyclic musks (PCMs), which are common active ingredients of personal care and household cleaning products. A laboratory scale AnMBR system was used in this investigation. Concentrations of the PCMs in both the...


    pub_type: 杂志文章


    authors: Wang L,Wijekoon KC,Nghiem LD,Khan SJ

    更新日期:2014-12-01 00:00:00

  • Organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in sediments from the Gulf of Batabanó, Cuba.

    abstract::The spatial distribution of various organochlorinated compounds, e.g. PCBs, DDTs, HCB and HCHs, were investigated in sediments of the Gulf of Batabanó, Cuba. Among the target organochlorine compounds measured, ΣDDT isomers were the predominant contaminant with concentrations ranging from 0.019 to 1.27 ng g(-1)dry wt. ...


    pub_type: 杂志文章


    authors: Alonso-Hernandez CM,Mesa-Albernas M,Tolosa I

    更新日期:2014-01-01 00:00:00

  • Generation of reactive oxygen species in cyanobacteria and green algae induced by allelochemicals of submerged macrophytes.

    abstract::Inhibition of phytoplankton by allelochemicals released by submerged macrophytes is reported to be one of the mechanisms that maintain a clear-water state in shallow lakes. In order to elucidate this mechanism, the ability of six polyphenols and two long-chain fatty acids to induce the generation of reactive oxygen sp...


    pub_type: 杂志文章


    authors: Wang J,Zhu J,Liu S,Liu B,Gao Y,Wu Z

    更新日期:2011-10-01 00:00:00

  • Intensification of volatile organic compounds mass transfer in a compact scrubber using the O3/H2O2 advanced oxidation process: kinetic study and hydroxyl radical tracking.

    abstract::This study assesses the potential of ozonation and advanced oxidation process O(3)/H(2)O(2) to enhance the dimethyldisulfide (DMDS) mass transfer in a compact chemical scrubber developed for air treatment applications. Theoretical calculations, through Hatta number and enhancement factor evaluations for two parallel i...


    pub_type: 杂志文章


    authors: Biard PF,Couvert A,Renner C,Levasseur JP

    更新日期:2011-11-01 00:00:00

  • The weight method: a new screening method for estimating pesticide deposition from knapsack sprayers in developing countries.

    abstract::Investigations of occupational and environmental risk caused by the use of agrochemicals have received considerable interest over the last decades. And yet, in developing countries, the lack of staff and analytical equipment as well the costs of chemical analyses make it difficult, if not impossible, to monitor pestic...


    pub_type: 杂志文章


    authors: García-Santos G,Scheiben D,Binder CR

    更新日期:2011-03-01 00:00:00

  • Umbilical cord blood PBDEs concentrations in relation to placental size at birth.

    abstract::Previous studies have linked prenatal polybrominated diphenyl ether (PBDE) exposure to adverse birth outcomes. Reductions in placental size might mediate those adverse effects. We examined whether umbilical cord blood PBDEs concentrations were associated with placental size at birth. A total of 121 mother-newborn pair...


    pub_type: 杂志文章


    authors: Zhao Y,Song Q,Cao Z,Su X,Hua J,Zhang Y,He X

    更新日期:2018-06-01 00:00:00