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Your search keyword '"Qiu, Ling"' showing total 12 results
Start Over Author "Qiu, Ling" Journal journal of hazardous materials
12 results on '"Qiu, Ling"'

9. Model AVSWAT apropos of simulating non-point source pollution in Taihu lake basin

Author

Imran Haider Shamsi, Qiu-Ling Zhang, Ghulam Jilani, Qiao-Gang Yu, and Yingxu Chen

Subjects
Pollution, Hydrology, China, Environmental Engineering, Health, Toxicology and Mutagenesis, media_common.quotation_subject, Environmental engineering, Models, Theoretical, Nutrient pollution, Calibration, Geographic Information Systems, Environmental Chemistry, Environmental science, Water Pollutants, SWAT model, Water quality, Eutrophication, Surface runoff, Waste Management and Disposal, Surface water, Nonpoint source pollution, media_common
Abstract

Accelerated eutrophication and nutrient loads in the lakes are of major concern for human health and environment. This study was undertaken for modeling the non-point source pollution of Taihu lake basin in eastern China. The SWAT model having an interface in ArcView GIS was employed. Model sensitive parameters related to hydrology and water quality were obtained by sensitivity analysis, and then calibrated and validated by comparing model predictions with field data. The GIS showed good potential for parameterization of hill-slopes, channels, and representative slope profiles for SWAT model simulations. In a monthly and daily time step, the model's Nash-Sutcliffe coefficient (E) and the coefficient of determination (R(2)) indicated that values of simulated runoff, NH(4)(+)-N and total phosphorus were acceptably closer to the measured data. Surface water parameters especially CN, Soil-AWC and ESCO were the most sensitive and had more recognition in the model. It is concluded that runoff carrying N and P nutrients from chemical fertilizer inputs in agricultural areas is the major contributor to NPSP in the lake basin. So, decrease in excessive use of N and P fertilizers and their synergism with organic manures is recommended that would significantly reduce nutrient pollution in the lake ecosystem.

Published
2009

12. Thiol-functionalization of metal-organic framework by a facile coordination-based postsynthetic strategy and enhanced removal of Hg2+ from water

Author

Ke, Fei, Qiu, Ling-Guang, Yuan, Yu-Peng, Peng, Fu-Min, Jiang, Xia, Xie, An-Jian, Shen, Yu-Hua, and Zhu, Jun-Fa

Subjects
*THIOLS, *CHEMICAL bonds, *METAL ions, *HEAVY metals removal (Sewage purification), *STOICHIOMETRY, *X-ray diffraction, *ADSORPTION (Chemistry), *SEWAGE purification
Abstract

Abstract: The presence of coordinatively unsaturated metal centers in metal-organic frameworks (MOFs) provides an accessible way to selectively functionalize MOFs through coordination bonds. In this work, we describe thiol-functionalization of MOFs by choosing a well known three-dimensional (3D) Cu-based MOF, i.e. [Cu3(BTC)2(H2O)3] n (HKUST-1, BTC=benzene-1,3,5-tricarboxylate), by a facile coordination-based postsynthetic strategy, and demonstrate their application for removal of heavy metal ion from water. A series of [Cu3(BTC)2] n samples stoichiometrically decorated with thiol groups has been prepared through coordination bonding of coordinatively unsaturated metal centers in HKUST-1 with –SH group in dithioglycol. The obtained thiol-functionalized samples were characterized by powder X-ray diffraction, scanning electron microscope, energy dispersive X-ray spectroscopy, infrared spectroscopy, and N2 sorption–desorption isothermal. Significantly, the thiol-functionalized [Cu3(BTC)2] n exhibited remarkably high adsorption affinity (K d =4.73×105 mLg−1) and high adsorption capacity (714.29mgg−1) for Hg2+ adsorption from water, while the unfunctionalized HKUST-1 showed no adsorption of Hg2+ under the same condition. [Copyright &y& Elsevier]

Published
2011
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