Photocatalytic Degradation Research of p-Xylene Using Doped TiO2 Under Different Conditions

2015 ◽  
Vol 14 (01n02) ◽  
pp. 1460022
Author(s):  
Chen Liu ◽  
Jun-Feng Chen ◽  
Rong-Chang Chen ◽  
Jia-Wei Chen ◽  
Xi Cao
Keyword(s):  
Yangtze River ◽  
Three Gorges Reservoir ◽  
Degradation Rate ◽  
Three Gorges Reservoir Area ◽  
Three Gorges ◽  
The Yangtze River ◽  
Photo Catalyst ◽  
Inland River ◽  
The Three Gorges ◽  
Made In

As the development of the "golden waterway" for the Yangtze River and the formation of the Three Gorges Reservoir area, the inland river shipping of chemical is increasing in China. At the same time, the risk of chemical leak accident is on the rising. Recent years, photo-catalyst has attracted great interest in environmental pollution treating for its unique properties. In order to improve its ability in pollution degradation, different kinds of doped TiO 2 are made in this work. Since the toxicity and transportation quantity, p-Xylene is researched as the aim chemical in this research. The influence of different catalyst, lighting time and reaction temperature to p-Xylene degradation rate are studied respectively in detail.

scholarly journals Simulating landslide-induced tsunamis in the Yangtze River at the Three Gorges in China

2021 ◽  
Author(s):  
Jinge Wang ◽  
Shun Wang ◽  
Aijun Su ◽  
Wei Xiang ◽  
Chengren Xiong ◽  
...  
Keyword(s):  
Yangtze River ◽  
Three Gorges Reservoir ◽  
Early Warning Systems ◽  
Numerical Approach ◽  
Three Gorges Reservoir Area ◽  
Catastrophic Failure ◽  
Three Gorges ◽  
The Yangtze River ◽  
The Three Gorges Reservoir ◽  
The Three Gorges

AbstractLandslide-induced tsunamis may cause fatalities, damages and financial losses. In the Three Gorges Reservoir Area of China, several large landslides are still unstable and persistently creeping toward the Yangtze River. In this paper, we investigate the impacts of landslide-induced tsunamis in the Three Gorges Reservoir by using a hybrid numerical approach. One of the largest unstable mass in this area, the Huangtupo landslide, is chosen as the study object. First, the landslide deformation and initiating velocities are obtained by using the finite-discrete element method. The landslide-induced tsunamis and their impacts on shipping on the Yangtze River are then investigated through smooth particle hydrodynamics modelling. Our results reveal that an approximately 80% reduction in shear strength of the tip in the landslide will lead to catastrophic failure of the landslide, with sliding velocities of up to 8 m/s. Subsequently, such a collapse may initiate a river tsunami, propagating up to 9 m on the nearby reservoir banks within 3 km. The impacts on surrounding floating objects, such as surges and sways, heaves and rolls, are up to 110 m, 8 m and 6°, respectively. The simulations indicate that although the likelihood of a catastrophic failure of the whole landslide is low, the partial sliding still poses severe threat to the nearby reservoir banks and shipping on the Yangtze River. Thus, we recommend continuous monitoring as well as landslide early warning systems at this and also other hazardous sites in this area.

Regulation of Laijiapu Waterway in Jingjiang Reach

2014 ◽  
Vol 501-504 ◽  
pp. 2001-2006
Author(s):  
Ya Liu ◽  
Li Zheng ◽  
Cheng Tao Huang ◽  
Zhao Biao Huang ◽  
Lin Liu
Keyword(s):  
Yangtze River ◽  
Three Gorges Reservoir ◽  
Three Gorges ◽  
The Yangtze River ◽  
Point Bar ◽  
The Three Gorges Reservoir ◽  
The Three Gorges ◽  
Before And After ◽  
The Stability ◽  
Channel Bar

After impoundment of the Three Gorges Reservoir, Jingjiang reach, in the middle of the Yangtze River, has gradually shown a series of atypical fluvial features, adversely affecting the maintenance of waterways. Citing the Laijiapu Waterway, a meandering segment in the lower Jingjiang for example, this paper compared the fluvial features of the channel before and after the impoundment, summed up its navigation-obstructing features, and proposed guarding the point bar on the convex bank and channel bar in the widening section as a key to maintaining the stability of the navigation channels.

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