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Li J.,Wuhan Textile University | Gan J.,Yangtze River Fisheries Research Institute | Chen Y.,Wuhan Textile University
Applied Mechanics and Materials | Year: 2011

The objectives of this work are to study the influence of fluoride additives on aluminum recycling from the boiler slag. The effect of adding different amounts of fluoride, such as NaF, NH 4F, KF and CaF 2, was investigated. An elemental analysis of aqueous solutions leached by sulfuric acid and hydrochloric acid was determined by EDTA-Na 2-ZnCl 2 titration method. The components and microstructures of the samples were examined by means of XRF, XRD and SEM. Acid strength, leaching time, solid/liquid ratios and different additives were conducted in this experiment. The fluoride additives have a significant effect on the leachability of alumina in the boiler slag. NH 4F is the best choice economically because of low dosage and high efficiency. © (2011) Trans Tech Publications.

Zhu J.-Q.,Yangtze University | Li G.,Yangtze River Fisheries Research Institute
Energy Education Science and Technology Part A: Energy Science and Research | Year: 2012

The Four-lake watershed (FLW) is an important area in Hubei province in China. In the last few decades, due to the impacts of population growth, industrial development, inadequate and aging water infrastructure, and pollutions, its environment state has been deteriorating. FLW has also been suffering from flooding whenever the Yangtze River overflows or water-logging problem during heavy rainfall. In view of these problems, to ensure the future sustainable development of the FLW socially and economically, the Hubei provincial government formally implemented an integrated management and control strategy for the Hong-hu Lake of FLW, which includes returning reclaimed lands to lakes, proper treatment of industrial and municipal wastes before discharging to receiving water bodies, planting of floating grasses, increasing fish species and population, and active participation of its residents. Three years after implementing the integrated management, there is a clear evidence of ecological recovery and restoration of the environmental integrity of the Hong-hu Lake of FLW. © Sila Science.

Li J.P.,Wuhan Textile University | Hu Y.J.,Wuhan Textile University | Gan J.H.,Yangtze River Fisheries Research Institute
Applied Mechanics and Materials | Year: 2014

Sewage sludge treatment and disposal has become a hot issue of current environmental concern, not only its effect will cause secondary pollution to the environment, more importantly, a large quantity of sludge is produced and growth rapidly, acceptable urban area is limited. So it's become an important issue need to be solved by us urgently. This article present the current domestic sewage sludge treatment and disposal methods respectively, elaborate the ways for utility, explain the practical advantages and disadvantages of each of these approaches and analyze the existing problems. At the same time, a number of resource utilization of new technologies was prospected. © (2014) Trans Tech Publications, Switzerland.

Li Z.-H.,University of South Bohemia | Li P.,University of South Bohemia | Shi Z.-C.,Yangtze River Fisheries Research Institute
Environmental Toxicology | Year: 2015

Tributyltin (TBT), as antifouling paints, is widely present in aquatic environment, but little is known regarding the toxicity of TBT on fish brain. In this study, the effects of exposure to TBT on the antioxidant defense system, Na+-K+-ATPase activity, neurological enzymes activity and Hsp 70 protein level in brain of juvenile common carp (Cyprinus carpio) were studied. Fish were exposed to sublethal concentrations of TBT (5, 10 and 20 μg/L) for 7 days. Based on the results, with increasing concentrations of TBT, oxidative stress was apparent as reflected by the significant higher levels of oxidative indices, as well as the significant inhibition of all antioxidant enzymes activities. Besides, the activities of Acetylcholinesterase (AChE), Monoamine oxidases (MAO) and Na+-K+-ATPase were significantly inhibited after exposure to TBT with higher concentrations. In addition, the levels of Hsp 70 protein were evaluated under TBT stress with dose-depended manner. These results suggest that selected physiological responses in fish brain could be used as potential biomarkers for monitoring residual organotin compounds present in aquatic environment. © 2014 Wiley Periodicals, Inc.

Li Z.-H.,Yangtze River Fisheries Research Institute | Li Z.-H.,University of South Bohemia | Zhong L.-Q.,Yangtze River Fisheries Research Institute | Mu W.-N.,Yangtze River Fisheries Research Institute | And 3 more authors.
Xenobiotica | Year: 2016

1. The purpose of this study was to compare tributyltin (TBT)-induced cytochrome P450 1 (CYP450 1) regulation in liver, gills and muscle of juvenile common carp (Cyprinus carpio).2. Fish were exposed to sublethal concentrations of TBT (75, 0.75 and 7.5 g/L) for 60 days. CYP450 1A was measured at the enzyme activity level as 7-ethoxyresorufin-O-deethylase (EROD) activity, as well as the mRNA expression of CYP450 1 family genes (CYP1A, CYP1B, CYP1C1 and CYP1C2) in fish tissues.3. Based on the results, the liver displayed the highest absolute levels of EROD activity, both under nonexposed and exposed conditions. Additional, EROD activities and CYP1A gene levels showed a good correlation in all three organs. According to the mRNA expression of CYP450 1 family genes, it suggested that CYP1A was to accommodate most EROD activity in fish, but other CYP450 forms also involved in this proceeding.4. Overall, the study revealed both similarities and differences in the concentration-dependent CYP450 1 responses of the three target organs, which could provide useful information to better understand the mechanisms of TBT-induced bio-toxicity. © 2015 Taylor and Francis.

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