Wyniki wyszukiwania

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Bioaugmentation with phenol-degrading bacteria (PDB) as a strategy for improving start-up and stability of sequencing biofilm batch reactor (SBBR) for coal gasification wastewater (CGW) treatment

100%

Zhuang H., Fang F.

Polish Journal of Environmental Studies

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2020

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tom 29

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nr 5

2

Advanced treatment of coal chemical industry wastewater by electro-catalysis with Gd-doped Ti/SnO2 anode

81%

Hou B., Deng R., Zhuang H., Yang Y.

Polish Journal of Environmental Studies

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2017

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tom 26

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nr 3

The preparation of a Gd-doped Ti/SnO₂ anode using the sol-gel method was employed in electrolysis as an advanced treatment of coal chemical industry wastewater. The optimal Gd-doped content and sintering temperature were 2% and 750ºC. The electro-catalytic performance was enhanced after doping with an adequate amount of Gd. The doped Gd accelerated the generation rate and content of hydroxyl radicals in the electrolysis process. Gd was mixed into the SnO₂ lattice by means of displacement to refine the SnO₂ crystalline grain. The diminution of grain size supplied more active sites on the electrode surface. The reaction of TOC degradation was between pseudo zero-order and first-order kinetics, and was more inclined to pseudo first-order kinetics. The performance and the stability test demonstrated that the prepared Ti/Gd-SnO₂ anode was competent and that electrolysis with the anode could serve as a technically feasible method with potential application for the advanced treatment of coal chemical industry wastewater.

3

Advanced treatment of paper-making wastewater using catalytic ozonation with waste rice straw-derived activated carbon-supported manganese oxides as a novel and efficient catalyst

81%

Zhuang H., Guo J., Hong X.

Polish Journal of Environmental Studies

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2018

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tom 27

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nr 1

Waste rice straw was converted into activated carbon-supported manganese oxides (MnOx/RSAC) that were first used as a catalyst to improve the performance of ozonation of real paper-making wastewater. The results indicated that catalytic ozonation with the prepared catalyst exhibited a highly efficient performance in advanced treatment of paper-making wastewater, and the corresponding color and COD removal efficiencies were 58.5 and 77.5%, respectively. And the treated wastewater was more biodegradable and less toxic than that in ozone alone. Based on significant inhibition of the radical scavenger and fluorescence test in the catalytic ozonation process, we deduced that the enhancement of catalytic activity was responsible for MnOx/RSAC catalyzing ozone to generate more hydroxyl radicals and the possible reaction pathway was proposed. Thus, MnOx/RSAC catalyzing ozonation could serve as a stable, efficient, and economical process with a potential engineering application for treated refractory wastewater, and the results offered new insights for sustainable use of waste rice straw.

4

Efficient treatment of British gas/lurgi coal gasification wastewater using new electro-fenton catalyzed by biogas residues and coal fly ash composite as heterogeneous catalyst

71%

Ping L., Shan S., Zhuang H., Guo J., Fang C.

Polish Journal of Environmental Studies

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2018

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tom 27

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nr 4

Biogas residues and coal fly ash composite (CFA/BRC) were first investigated as novel heterogeneous catalysts for strengthening electro-Fenton (EF) of real British gas/Lurgi coal gasification wastewater. The prepared CFA/BRC was characterized by different techniques, i.e., SEM, XRD, BET surface area, XRF, and ICP-AES. The results indicated that CFA/BRC significantly improved performance of pollutant removal in EF across a wide pH range with current density of 10 mA/cm² and catalyst dosage of 1.0 g/L, and the treated wastewater was more biodegradable than homogeneous EF. Meanwhile, CFA/BRC showed superior stability at successive 2,400-min runs, and leached concentrations of heavy metals were very low without the second pollutant. The change of concentrations of dissolved oxygen and electro-generated H₂O₂, and fluorescence test indicated that the novel catalyst could enhance H₂O₂ decomposition into more hydroxyl radicals, which was considered to be mainly responsible for the pollutant removal. And the results offered new insights into sustainable use of waste materials.

5

The time course of NO involved in ABA pathway to improve drought tolerance in Oxytropis ochrocephala Bunge

61%

Zhuang H., He W., Chen X., Wang L., Ji L., Guo B., Wei Y.

Acta Physiologiae Plantarum

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2015

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tom 37

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nr 07

Oxytropis ochrocephala Bunge is a poisonous legume plant which exhibits drought acclimation behavior and spreads rapidly under adverse environment. This study demonstrates that the stress signals including NO (nitric oxide), ABA (abscisic acid), and H2O2 (Hydrogen peroxide) are involved in roots of O. ochrocephala seedlings when exposed to drought stress simulated by PEG-6000 solution. The relationship among these signals was investigated by using exogenous and endogenous modulators. The results indicate that a time course of NO is accumulated in roots of O. ochrocephala in response to drought stress, which is generated enzymatically by nitrate reductase (NR) activity. The low level of NO acts as a downstream signaling of ABA and is involved with H2O2 signaling cascade. There is a regulatory mechanism of controlling NO concentration and maintaining the equilibrium state between ROS (reactive oxygen species) and NO, which modulates the root cell vitality, and osmotic adjustment thus improves root growth and developmental processes under drought stress.

6

The applied anatomy and clinical significance of the proximal, V1 segment of vertebral artery

32%

Li X., Guan L., Zilundu P. L. M., Chen J., Chen Z., Ma M., Zhuang H., Zhuang Z., Qiu Y., Ye F., Wu X., Sang H., Ye Y., Han Y., Yao H., Li H., Zhong G., Wu H., Jiang Z., Chu G., Xu D., Zhou L.

Folia Morphologica

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2019

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tom 78

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nr 4

Background: The aim of the study was to probe the morphological features of the proximal segment (V1) of vertebral artery (VA) in a sample of Chinese cadavers. Materials and methods: The origin, course and outer diameter at origin of the pre-vertebral part of the VAs were evaluated in 119 adult cadavers. Results: It was found that 94.12% of the VAs originated from the subclavian arteries, bilaterally. The variant origins were present in 5.88% of the cadavers and all originated directly from the arch of the aorta. All the variations were observed on the left side of male cadavers. The average outer diameters at origin of the normal and variation groups were 4.35 ± 1.00 mm and 4.82 ± 1.42 mm, respectively, p = 0.035. In the normal group, but not in the variation group, the average diameter in the males was significantly larger than that in the females (4.50 ± 0.99 mm, 3.92 ± 0.92 mm, respectively, p = 0.000). In addition, only 5 cadavers in the normal group had hypoplastic VAs (4.20%, 4 males, 3 right-sided). Vertebral artery dominance (VAD) was present in 91 (69 males) out of 112 cadavers and more common on the left (n = 48). In addition, 3 cadavers satisfied conditions for coexistence of VAD and vertebral artery hypoplasia. All 7 cadavers in the variation group exhibited VAD, which was more common on the right side (n = 5). Conclusions: The morphologic variations and frequencies described above have implications for the early prevention, abnormal anatomy detection, accurate diagnosis, safe surgery and endovascular treatment of cardiovascular and neurological disease. (Folia Morphol 2019; 78, 4: 710–719)

Ograniczanie wyników

Bioaugmentation with phenol-degrading bacteria (PDB) as a strategy for improving start-up and stability of sequencing biofilm batch reactor (SBBR) for coal gasification wastewater (CGW) treatment

Advanced treatment of coal chemical industry wastewater by electro-catalysis with Gd-doped Ti/SnO2 anode

Advanced treatment of paper-making wastewater using catalytic ozonation with waste rice straw-derived activated carbon-supported manganese oxides as a novel and efficient catalyst

Efficient treatment of British gas/lurgi coal gasification wastewater using new electro-fenton catalyzed by biogas residues and coal fly ash composite as heterogeneous catalyst

The time course of NO involved in ABA pathway to improve drought tolerance in Oxytropis ochrocephala Bunge

The applied anatomy and clinical significance of the proximal, V1 segment of vertebral artery