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Xu J.,Jiangsu Key Laboratory of Industrial Water Conservation and Emission Reduction | Wu H.,Jiangsu Key Laboratory of Industrial Water Conservation and Emission Reduction | Chen L.,Nanjing University of Technology
Chinese Journal of Environmental Engineering | Year: 2013

To study the spatial and temporal concentration distribution after the spill of Benzene, the coupling diffusion model was used. Based on the experimental simulation and the coupling diffusion model, the law of concentration distribution was described. With an increasing of time, the concentration of Benzene was reduced along the flow direction. The farther away from the release point, the concentration peak appeared later and became lower. The concentration distribution was symmetrical on both sides of the z=0.20 m vertical section and it appeared the minimum value in the water-air interface and at sink edge. With the increasing in the amount of volatiles, the concentration peak appeared from the water to the air. The concentration went to both sides along the flow width direction from the release point. The influences of Henry constant, water velocity and wind velocity were analyzed. Source

Chen K.,Nanjing University of Technology | Liu Q.,Nanjing University of Technology | Liu Q.,Jiangsu Pesticide Research Institute Co. | Ni J.-P.,Jiangsu Pesticide Research Institute Co. | And 4 more authors.
Pest Management Science | Year: 2015

BACKGROUND: Anthranilic diamide insecticides containing pyridylpyrazole-5-carboxamide are extremely important in modern agriculture. New structurally modified compounds with high insecticidal activity were discovered by designing a series of novel pyridylpyrazole-4-carboxamides (9I to 9IV) and pyridylpyrazole-4-carboxamides (10I to 10IV), the latter designed by the cyclisation of two amides. The structure-activity relationship (SAR) between the two series is of interest. RESULTS: Two series of novel anthranilic diamides containing pyridylpyrazole-4-carboxamide were synthesised and characterised via melting point, 1H NMR, 13C NMR, MS and elemental analyses. The insecticidal activities of these compounds against Plutella xylostella were evaluated. At a concentration of 100mgL-1, the compounds with unmodified amide moieties (9I to 9IV) exhibited much better larvicidal activities than the other derivative compounds (10I to 10IV). Most of the compounds 9I to 9IV showed over 90% larvicidal activity at 100mgL-1. Furthermore, compounds 9IIIa, 9IIIc, 9IIId and 9IVd displayed significant insecticidal activity at 10mgL-1. Density functional theory (DFT) calculation was carried out to provide more information regarding SAR. CONCLUSION: Thirty-two new anthranlic diamides containing pyridylpyrazole-4-carboxamide were designed and obtained. SAR analysis and DFT calculation results revealed that the amide moiety had a very important effect on bioactivity. This work has provided information that could aid investigations of novel insecticides. © 2015 Society of Chemical Industry. Source

Ma G.-C.,Nanjing University of Technology | Ma G.-C.,Jiangsu Key Laboratory of Industrial Water Conservation and Emission Reduction | Sun W.-Q.,Nanjing University of Technology | Sun W.-Q.,Jiangsu Key Laboratory of Industrial Water Conservation and Emission Reduction | And 3 more authors.
Xiandai Huagong/Modern Chemical Industry | Year: 2016

Micro electrolysis-anaerobic-aerobic biological process is used in the treatment of benzoic acid wastewater. The maximum COD removal rate can reach 33% with 2/1 of Fe/C ratio and 3 h of reaction time. By the acclimation of sludge and the improvement of the organic load, the best anaerobic influent volumetric loading is 3.0 kgCOD/(m3·d) and aerobic influent volumetric loading is 1.0 kgCOD/(m3·d). A better treatment effect is achieved in the end. © 2016, China National Chemical Information Center. All right reserved. Source

Shi H.,Nanjing University of Technology | Wu T.,Nanjing University of Technology | Jiang P.,Nanjing University of Technology | Jin X.,Nanjing University of Technology | And 2 more authors.
Journal of Heterocyclic Chemistry | Year: 2014

Seven novel fluorescence-traced 1-aryl-2-substituted-3-allyl-1H- benzimidazolium bromides (5a, 5b, 5c, 5d, 5e, 5f, 5g) were synthesized by alkylation and quaternization of compounds 1-aryl-2-substituted-1H- benzimidazoles (4a, 4b, 4c, 4d, 4e, 4f, 4g) with excess allyl bromide in acetonitrile at refluxing temperature. Their structures were characterized by 1H-NMR, MS, and elemental analysis. They emit violet-blue light (λEm max = 386-438 nm) with fluorescence quantum yields of 0.54 to 0.75 in aqueous solution. © 2014 HeteroCorporation. Source

Yu P.,Nanjing University of Technology | Yu P.,Jiangsu Key Laboratory of Industrial Water Conservation and Emission Reduction | Li X.,Nanjing University of Technology | Li X.,Jiangsu Key Laboratory of Industrial Water Conservation and Emission Reduction | And 3 more authors.
Jiegou Huaxue | Year: 2014

A novel benzisothiazolin-3-one derivative, 2-(benzo[d]isothiazol-3-yloxy)-N-(3- cyano-1-(4-fluorophenyl)-1H-pyrazol-5-yl) acetamide (8), was synthesized from the initial compound benzo[d]isothiazol-3(2H)-one (BIT) 1 and 4-fluoroaniline 3. The structure of the target compound 8 was determined by elemental analyses, IR and 1H NMR. The single crystals of intermediate compound 6 and the target compound 8 were obtained and determined by X-ray diffraction analysis. The preliminary biological activity was also evaluated and the results showed the target compound exhibited a good anti-microbial activity. Source

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