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Xie G.,Lanzhou University | Xie G.,Lanzhou University of Technology | Mao N.,Gansu Tobacco Industrial Co. | Zhou L.,Lanzhou University | And 2 more authors.
Chinese Journal of Environmental Engineering | Year: 2015

Acidified carbon nanotubes (CNTs)-reinforced polyurethane foam(PUF) based composite(CPUF) were fabricated by the in situ polymerization method. The structure and properties of the CPUF composite were investigated by fourier transform infrared spectroscopy(FT-IR), scanning electron microscope(SEM), thermogravimetric analysis(TGA) and tensile testing. The performance of adsorption, influencing factors and adsorptive effect after regeneration for removing nitrobenzene(NB) from simulated wastewater by CPUF composite were investigated. The results showed that the adsorption of NB by CPUF composite was better and under these conditions: pH of 5.4, CPUF composite amount of 2 g/L, contact time of 24 h, the amount of saturated adsorption of CPUF composite was reduced by temperature rising, but higher initial adsorption rate, the adsorption isotherms conformed to Langmuir adsorption isotherm in line with the Langmuir equation, belonged to the single molecular adsorption. Saturated CPUF composite could be regenerated with simple thermal method and the removal efficiency of NB by the regenerated sorbent did not drop obviously. ©, 2015, Science Press. All right reserved.

Han Y.-H.,China Tobacco Standardization Research Center | Han L.,Gansu Tobacco Industrial Co.
Chung-kuo Tsao Chih/China Pulp and Paper | Year: 2012

With the voice rising for resource saving and environment protection, there is a general trend of using vacuum metallization inner liner to replace with the composite aluminum foil paper for cigarette packaging. In this paper, we briefly introduced the quality protection capability, environment protection performance and machine adaptability of the vacuum metallization inner liner, technology, characteristic and identification method of the direct metallization paper and the transfer paper.

Qin G.,Gansu Tobacco Industrial Co. | Li B.,CAS Zhengzhou Research Institute | Lu D.,CAS Zhengzhou Research Institute | Xie G.,China Tobacco Hunan Industrial Co. | And 2 more authors.
Tobacco Science and Technology | Year: 2015

In order to study the combustion of tobacco biomass, four kinds of typical tobacco biomass (cut strips of middle leaves of flue-cured tobacco, expanded cut stem, expanded cut tobacco and reconstituted tobacco)were tested by TG-DSC at the heating rates of 5, 10, 15 and 20℃/min. The results showed that: 1)The combustion of volatile and fixed carbon in the four kinds of tobacco biomass was not a continuous process, volatiles and fixed carbon were ignited independently. 2)The combustion of volatiles and fixed carbon in expanded cut tobacco would overlap at higher heating rates (15 and 20℃/min). 3)By calculating the combustibility indexes of tobacco biomass, it was found that the combustion property of the four kinds of tobacco biomass did not obviously differ at the heating rates of 5 and 10℃/min, however that of expanded cut tobacco was better at a heating rate of 15 or 20℃/min. ©, 2015, Editorial Office of Tobacco Science and Technology. All right reserved.

Li B.,CAS Zhengzhou Research Institute | Pang H.,CAS Zhengzhou Research Institute | Xie G.,China Tobacco Hunan Industrial Co. | Qin G.,Gansu Tobacco Industrial Co. | And 3 more authors.
Tobacco Science and Technology | Year: 2013

In order to study the influence of combustion improver(potassium citrate) content in cigarette paper on cigarette burning state, the cigarette samples with cigarette paper of different grammages and containing different rates of combustion improver were prepared. The temperature in cigarette was detected with fine-thermocouples. By revising Rosin-Rammler (R-R) particle size distribution model, a method for characterizing temperature distribution in cigarette burning cone was developed, where, burning cone volume V0, characteristic temperature Ts, and distribution parameter N were taken as characteristic variables. The effects of combustion improver content and grammage of cigarette paper on temperature distribution characteristics in cigarette during static burning, puffing, and smouldering stages were investigated. The results showed that: With the increase of combustion improver content and grammage of cigarette paper, 1) The highest temperature in burning cone decreased during the whole process of cigarette smoking. 2) The volume of burning cone increased in all of the three burning stages, and reached its maximum value at the end of a puffing. 3) The characteristic temperature Ts of burning cone raised gradually and the range of temperature distribution decreased during static burning; however during puffing, Ts raised and then dropped.

Zang Z.,Gansu Tobacco Industrial Co. | Lu Z.,Gansu Tobacco Industrial Co. | Wang W.,Gansu Tobacco Industrial Co. | Peng S.,Gansu Tobacco Industrial Co. | Yang Y.,Gansu Tobacco Industrial Co.
Tobacco Science and Technology | Year: 2014

In order to improve the accuracy of test results, the measurement uncertainty of benzene and its five homologues (toluene, ethylbenzene, p-xylene, m-xylene, o-xylene) in water-based adhesive by GC/MS was analyzed and evaluated via establishing rational mathematical models and analyzing the main sources of uncertainty in this measuring method. The results showed that the expanded uncertainty values of the six analytes ranged from 0.006 to 0.019 mg/kg (k=2). On the basis of the weights of various components of uncertainty, the five selected experimental factors in the order of their influence on determination results were ambient temperature < repeated measure < standing time < apparatus measuring < curve fitting.

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