Entity

Time filter

Source Type


Huang J.-D.,Liaoning University | Qiu J.,Fourth Affiliated Hospital of China Medical University | Li D.-H.,Shenyang Academy of Environmental science
Environment, Energy and Sustainable Development - Proceedings of the 2013 International Conference on Frontier of Energy and Environment Engineering, ICFEEE 2013 | Year: 2014

This study focused on the technical measures of revegetation on Boron mud heap in Dandong, China. Adopting field test method, revegetation trial was conducted on the waste Boron mud heap. By composting the urban sludge + river mud + straw inside planting pit to ameliorate Boron mud matrix, transplanting nutrition cup bush seedlings and sowing herbage seed on the composting pit to establish bush-herbage clump, these technical measures can solve the major constraints to plant growth and establish survival bush-herbage vegetation at lowcost. The results show that pit layered composting is the cost-effective measure to improve Boron mud planting matrix; Planting bush-herbage clump is a good pattern to resist the extreme Boron mud heap environment. Hippophae rhamnoides Linn., Caragana Korshinskii Kom., Pennisetum alopecuroides (L.) Spreng. and Medicago sativa Linn.are good pioneer species for revegetation on the Boron mud heap. Experiment proved that the combination of these technical measures can reconstruct vegetation, this revegetation pattern is worthy of reference for similar mine ecological restoration. © 2014 Taylor & Francis Group, London. Source


Wang J.,Shenyang Academy of Environmental science | Zhang X.,Tsinghua University | Li G.,Tsinghua University
Ozone: Science and Engineering | Year: 2013

Ozonation is an effective method to remove recalcitrant weathered oil in contaminated soil. The purpose of this study was to characterize the compositional changes of hydrocarbons in residual oil during ozonation. A bioremediated soil containing residual oil was ozonated for up to 15 h. A total of 102 compounds in the residual oil were analyzed by GC/MS and 36 diagnostic ratios (DRs) were calculated based on quantitative or semi-quantitative results in order to evaluate the susceptibility of the residual oil compositions to ozonation and the effects of ozonation on the fingerprint profile of the residual oil. The total ozonation removal rates were in the following order: triaromatic steranes (TAS) > steranes, polycyclic aromatic hydrocarbons, terpanes > alkanes. Ozone kept the fingerprints of n-alkanes, C27- to C34-terpanes, steranes and TAS, separately. Branched alkanes (i.e., pristane and phytane) showed a higher removal rate than n-alkanes. Ozone reactivity of PAHs depended on the number of rings, presence of heteroatoms and level of alkylation. Four- to six-ring PAHs and PAHs with a high level of alkylation showed higher reactivity, while dibenzothiophene and alkylated dibenzothiophenes were found to be resistant to ozonation. Some of the biomarker source ratios remained stable and could still be used for source identification even after some of the biomarkers were removed by >90% by ozonation. © 2013 Copyright 2013 International Ozone Association. Source


Huang J.-D.,Liaoning University | Li D.-H.,Shenyang Academy of Environmental science
Advanced Materials Research | Year: 2012

This study focused on the technical measures of revegetation on ferrum tailings bank in Huludao, China. Adopting field test method, a revegetation trial was conducted on the Yangjiazhangzi waste ferrum tailings bank. By composting the urban sludge + river mud + straw inside planting pit to ameliorate tailings matrix, planting perennial herb to establish closed type sand barrier to shelter bush-herbage growth, transplanting nutrition cup bush seedlings and sowing herbage seed on the composting pit to establish bush-herbage clump, these technical measures can solve the major constraints to plant growth and establish survival bush-herbage vegetation at lowcost. The results show that Pit layered composting is the cost-effective measure to improve ferrum tailings planting matrix; Planting perennial herb sand barrier t is a good measure to improve microhabitat; Planting bush-herbage clump is a good pattern to resist the extreme ferrum tailing environment; Hippophae rhamnoides Linn., Caragana Korshinskii Kom., Medicago sativa Linn.and Astragalus adsurgens Pall are good pioneer species for revegetation on the ferrum tailings bank. Experiment proved that the combination of these technical measures can reconstruct vegetation, this revegetation pattern is worthy of reference for similar mine ecological restoration. Source


Wang M.,Shenyang Ligong University | Che Y.-S.,Shenyang Ligong University | Dong Z.-J.,Shenyang Ruixiang Wind Energy Equipment Co. | Zhu L.,Shenyang Academy of Environmental science | And 3 more authors.
Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment | Year: 2014

Er-B co-doped BiVO4 visible-light-driven photocatalysts had been synthesized by citric acid complex method. The samples were characterized by XRD, SEM, EDS and UV-vis DRS analyses and the photocatalytic activity was investigated by photocatalytic degradation of methyl orange (MO). The XRD patterns show that doping does not change the crystal structure of BiVO4 and all samples are monoclinic structure. But the crystal sizes of all Er-B co-doped BiVO4 are smaller than those of B-doped BiVO4 and pure BiVO4. The UV-vis DRS analyses show that Er-B co-doping leads to higher light absorption intensity and narrower band gap compared with B-doped BiVO4 and pure BiVO4. And the doped Er (III) ions can help the separation of photogenerated electrons. Compared with BiVO4 and B-BiVO4, the photocatalytic activity of Er-B co-doped BiVO4 is remarkable improved due to the synergistic effects of the co-doped ions. The degradation rate of MO in 60 min is 96.62% when B and Er doping content is 4% and 1%, respectively (molar ratio), which is much higher than that of pure BiVO4 (20%) and B-BiVO4(37%). Source


Huang Y.,Northeastern University China | Hu X.,Northeastern University China | Fu L.,Shenyang Academy of Environmental science
World Automation Congress Proceedings | Year: 2012

It will be a good method which is fit for our country to treat the sewage sludge as composting materials. However, an effective process of Sludge Disintegration must be the key precondition for aerobic composting. A hydrodynamic cavitation system and two aerobic digestion reactors were designed and made. The sludge from an MBR(membrane biologic reactor) which has been treating sanitary wastewater was considered as the sample for experiments. Sample1s were integrated by the hydrodynamic cavitation system first then put into the Aerobic Digestion Reactor 1, Sample 2 was put into the ADR without any pretreatment. According to the physical model experiment work in the lab, the conclusions could be drawn, that as a pre-process, hydraulic cavitaiton method can make the sludge be dewatered easier, and accelerate the digestion reaction by twice. In addition, the hydraulic cavitaiton device is simple, ready for industrialization, and without secondary pollution. © 2012 TSI Press. Source

Discover hidden collaborations