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	1. Self-assembled graphene films with various thicknesses as supercapacitor electrodes
	ZHU Jianbo,CHEN Wenjing,GUAN Sinan,ZHAO Xiayi,CHEN Xueye,ZU Jiasheng
	Chemical Engineering 03 June 2020
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	Abstract:In this paper,Graphene have attracted considerable attention as the supercapacitor material due to its high electronic conductivity and large ion-accessible surface area. Herein, self-assembled reduced grapheneoxide (rGO) films with various controllable thicknesses and mass loadings are facilely prepared via a scalable vacuum filtration method. The rGO film electrodes with considerable mass loading of 6.7 mg cm-2 exhibit high specific capacitance of 173.4 F g-1 (1.16 F cm-2) at 1 A g-1 in 6 M KOH aqueous electrolyte, indicating the high utilization of the rGO active material. Moreover, quasi-solid supercapacitors fabricated with the rGO film electrode and PVA/KOH gel electrolyte shows a high capacitance of 1.03 F cm-2 and a large energy density of 0.073 mWh cm-2 at the power density of 3.3 mW cm-2, as well as excellent cycling stability of 85.6% retention after 10000 cycles. Such remarkable performance suggests that the rGO films are promising electrode materials for supercapacitor application.
	TO cite this article:ZHU Jianbo,CHEN Wenjing,GUAN Sinan, et al. Self-assembled graphene films with various thicknesses as supercapacitor electrodes[OL].[ 3 June 2020] http://en.paper.edu.cn/en_releasepaper/content/4752297


	2. The roles of iron-based additives on the sulfur evolution during lignite pyrolysis
	TIAN Jilin,FU Chunhui,WANG Meijun,SHEN Yanfen,WANG Peng,CHANG Liping
	Chemical Engineering 02 February 2015
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	Abstract:The effects of two iron-based additives (ferric acetate and ferrous oxalate) in a Chinese lignite with high organic sulfur samples without and with demineralization on the sulfur evolution from coal pyrolysis have been studied with a fixed bed quartz reactor in argon atmosphere. The results show that the inherent mineral matters as well as iron-based additives inhibit the formation of hydrogen sulfide and carbonyl sulfide. Two iron-based additives with 3wt% Fe are added to the raw and demineralized coal by mechanical mixing method, and the effects of two iron additives on the sulfur evolution during coal pyrolysis are different. Both inherent mineral matters and iron-based additives have positive effects on the retention of sulfur in char. But the releasing behaviors of S-containing gases in the pyrolysis of ferrous oxalate loaded samples are different from that of ferric acetate loaded samples. This can be attributed to the difference of decomposition products of two different kinds of iron-based additives, which have different reaction behaviors with S-containing species. The inherent mineral matters and two kinds of iron-based additives have better catalytic role in promoting the sulfur converting into larger molecules form of sulfide in liquid phase products. The ferrous oxalate plays a better role than ferric acetate in this process.
	TO cite this article:TIAN Jilin,FU Chunhui,WANG Meijun, et al. The roles of iron-based additives on the sulfur evolution during lignite pyrolysis[OL].[ 2 February 2015] http://en.paper.edu.cn/en_releasepaper/content/4631462

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	3. Optimization of Fermentation Medium of K.rhizophila.H5401 for Producing (R)-Adrenaline Using Response Surface Methodology
	CHEN Bingmei,XU Xiaoping
	Chemical Engineering 18 February 2014
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	Abstract:A bacterium strain Kocuria rhizophila.XL11 capable of producing (R)-adrenaline ((R)-epinephrine) with high optical purity (enantiomeric excess > 99%) was firstly isolated. Optimization of the fermentation medium was performed by using response surface methodology. Critical nutrients were initially selected according to a Plackett-Burman design, followed by an application of steepest ascent method to approach the optimal response area. The optimized medium composition for maximum adrenaline production by the mutant strain Kocuria rhizophila.H5401 was obtained based on a three-level three-factor Box-Behnken design, and the optimum concentrations of the critical factors were obtained as follows: glycerol 8.61 goL-1, peptone 7.22 goL-1 and NH4H2PO4 5.65 goL-1. The maximum yield of adrenaline was found to be 61.14%, which is an increase of 25.0% compared to that obtained from the original fermentation medium.
	TO cite this article:CHEN Bingmei,XU Xiaoping. Optimization of Fermentation Medium of K.rhizophila.H5401 for Producing (R)-Adrenaline Using Response Surface Methodology[OL].[18 February 2014] http://en.paper.edu.cn/en_releasepaper/content/4583994


	4. Engineering Bacillus subtilis for acetoin production from glucose and xylose mixtures
	CHEN Tao,LIU Weixi,FU Jing,ZHANG BO
	Chemical Engineering 23 April 2013
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	Abstract:As a vital flavor compound, acetoin is extensively used in dairy products and drinks industry. In this study, Bacillus subtilis was engineered to metabolize glucose and xylose as substrates for acetoin production. Initially, gene araE from B. subtilis, encoding the xylose transport protein AraE, was placed under the control of the constitutive promoter P43 for over-expression. Batch cultures showed that 10 g/L xylose was depleted completely in 32 hours. Subsequently, genes xylA and xylB from Escherichia coli, encoding xylose isomerase and xylulokinase respectively, were introduced into B. subtilis, and the recombinant turned out to assimilate glucose and xylose without preference. In shake-flask fermentations, 5.5 g/L acetoin with a yield of 0.70 mol (molosugar)-1 was obtained by the optimum strain BSUL13 under microaerobic conditions, which offered a metabolic engineering strategy on engineering microbe as cell factory for the production of high-valued chemicals from renewable resource.
	TO cite this article:CHEN Tao,LIU Weixi,FU Jing, et al. Engineering Bacillus subtilis for acetoin production from glucose and xylose mixtures[J].


	5. BaF2: NaxAlyFx+3y/TiO2 composite as a novel visible-light-driven photocatalyst based on upconversion emission
	LIU Enzhou,FAN Jun,HU Xiaoyun,HOU Wenqian,DAI Hongzhe
	Chemical Engineering 18 June 2012
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	Abstract:A rare-earth free upconversion luminescence agent, BaF2: NaxAlyFx+3y (0.3＜x＜0.5, 0＜y＜0.1), was synthesized by a hydrothermal method. The fluorescence spectrum studies indicated that it could transform visible light (550-610 nm) into ultraviolet light (290-350 nm), and two emission peaks at 304 and 324 nm were observed under the excitation of 583 nm at the room temperature. Subsequently, BaF2: NaxAlyFx+3y/TiO2 composite photocatalyst was prepared and its catalytic activity was evaluated by the photocatalytic reduction of CO2 under visible light irradiation (λ＞515 nm). The results showed that BaF2: NaxAlyFx+3y/TiO2 was an effective photocatalyst for CO2 reduction than pure TiO2, the corresponding methanol yields were 179 and 0 μmol/g-cat under the same conditions. Additionally, the mechanism of photocatalytic reduction of CO2 on BaF2: NaxAlyFx+3y/TiO2 was proposed.
	TO cite this article:LIU Enzhou,FAN Jun,HU Xiaoyun, et al. BaF2: NaxAlyFx+3y/TiO2 composite as a novel visible-light-driven photocatalyst based on upconversion emission[OL].[18 June 2012] http://en.paper.edu.cn/en_releasepaper/content/4482567


	6. An oxidoreduction potential shift control strategy for high purity propionic acid production by Propionibacterium freudenreichii CCTCC M207015 with glycerol as sole carbon source
	CHEN Fei,FENG Xiaohai,LIANG Jinfeng,XU Hong
	Chemical Engineering 04 June 2012
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	Abstract:The effects of oxidoreduction potential (ORP) regulation on the process of propionic acid production by Propionibacterium freudenreichii CCTCC M207015 have been investigated. Potassium ferricyanide and sodium borohydride were to determine as ORP control agents in serum bottle. In batch fermentation, cell growth, propionic acid and by-products distribution were changed with ORP levels in the range of 0 to 160 mV. Based on these analysis results, an ORP-shift control strategy was proposed: At first 156 h, ORP was controlled at 120 mV to obtain higher cell growth rate and propionic acid formation rate, then it was shifted to 80 mV after 156 h to maintain the higher propionic acid formation rate. By applying this ORP-shift control strategy, the optimal parameters were obtained as follows: the propionic acid concentration 45.99 g/L, productivity 0.192 g/L/h, the proportion of propionic acid to total organic acids 92.26% (w/w) and glycerol conversion efficiency 76.65%. The mechanism of ORP regulation was discussed by the ratio of NADH/NAD and ATP levels. The results suggest that it is possible to redistribute metabolic fluxes by the ORP-shift control strategy, and the strategy could provide a simple and efficient tool to realize high purity propionic acid production using glycerol.
	TO cite this article:CHEN Fei,FENG Xiaohai,LIANG Jinfeng, et al. An oxidoreduction potential shift control strategy for high purity propionic acid production by Propionibacterium freudenreichii CCTCC M207015 with glycerol as sole carbon source[J].


	7. Fabrication of Hierarchical Porous ZnO and its Application Performance in Ni/ZnO Reactive-Adsorption Desulfurization Process
	TIAN Shuang,LIU Yunqi,ZHANG Ke,LIU Chenguang
	Chemical Engineering 19 February 2012
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	Abstract:To better understand the nature of reactive adsorption of FCC gasoline on Ni/ZnO adsorbent, the effect of ZnO textural structure on the desulfurization activity were investigated. Hierarchical rod-shaped ZnO was synthesized by solvothermal and thermal descomposition methods. The ZnO material possessed not only macropores but also mesopores. The mesopores might be formed by the aggregation of nanoclusters and the macropores be formed by the aggregation of microrods. The corresponding Ni/ZnO adsobents were prepared by incipient impregnation method. The analysis results showed that both the crystalline sizes and the texture structure of the synthesized ZnO were better than that of commercial ZnO. Compared with commercial ZnO-based Ni/ZnO absorbent, hierarchical porous ZnO-based Ni/ZnO absorbent possesses higher desulfurization performance, which can be attributed to its possession with higher diffusion effect and special surface area.
	TO cite this article:TIAN Shuang,LIU Yunqi,ZHANG Ke, et al. Fabrication of Hierarchical Porous ZnO and its Application Performance in Ni/ZnO Reactive-Adsorption Desulfurization Process[OL].[19 February 2012] http://en.paper.edu.cn/en_releasepaper/content/4467239


	8. Catalytic hydrogen iodide decomposition over carbon nanotubes supported Pt catalysts
	WANG Laijun,ZHANG Ping,WANG Zhichao,CHEN Songzhe,XU Jingming,CHEN Jing
	Chemical Engineering 12 March 2011
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	Abstract:Two kinds of Pt catalysts supported on carbon nanotubes (CNTs) were prepared by the electroless plating method and the impregnation-reduction method. Their catalytic activities were evaluated through hydrogen iodide decomposition in a fixed bed reactor under atmospheric pressure. The catalysts were characterized by XRD、BET and TEM, respectively. The results indicated that the CNTs supported Pt catalyst prepared by the electroless plating method had the higher activity for hydrogen iodide decomposition than that prepared by the impregnation-reduction method, because of the higher dispersion of the platinum nano-particles on the CNTs support.
	TO cite this article:WANG Laijun,ZHANG Ping,WANG Zhichao, et al. Catalytic hydrogen iodide decomposition over carbon nanotubes supported Pt catalysts[OL].[12 March 2011] http://en.paper.edu.cn/en_releasepaper/content/4416054


	9. BIODEGRADABILITY EVALUATION OF TYPICAL LEATHER CHEMICALS (II)-THE BIODEGRADATION BEHAVIOURS OF ORGANIC TANNING AND RETANNING AGENTS ON ACTIVATED SLUDGE
	Sun Danhong,Shi Bi
	Chemical Engineering 13 January 2010
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	Abstract:The biodegradabilities of three kinds of typical organic tanning and/or retanning agents, namely aromatic syntans, aldehyde tanning agents and acrylic syntans, were studied in this paper. The results showed that the biodegradation behaviours of the leather chemicals are closely associated with their molecular weight and structure together with their chemical composition. It is suggested that the employment of organic tanning and/or retanning agents in leather industry might result in different environmental impacts even for the same kind of syntans. The tested four aromatic syntans (SGP, PGP, KWOP and BS) exhibited different but generally low biodegradability. The phenol syntan SGP could not be biodegraded, and the phenol-sulphone syntan PGP exhibited strong inhibitory effects on activated sludge respiration. Comparatively, the naphthalene syntan BS and the phenol syntan KWOP showed somewhat better biodegradability. In the case of aldehyde tanning agents, both formaldehyde and glutaraldehyde are toxic to activated sludge organisms, and comparatively the latter is potential to cause more severe environmental problem when it was used in leather industry. However, an aliphatic aldehyde product, namely syntan SH, did not show toxicity to activated sludge and it was biodegradable when it was at the concentrations tested. As far as acrylic syntans were concerned, the results indicated that the commercial anionic products (R83, B7815, ART-I and ART-II) were not so much inhibitory but were hardly biodegraded. However, a cationic product ART-III is potential to inhibit the activated sludge process in the effluent treating yard of tannery when it presented at high content.
	TO cite this article:Sun Danhong,Shi Bi. BIODEGRADABILITY EVALUATION OF TYPICAL LEATHER CHEMICALS (II)-THE BIODEGRADATION BEHAVIOURS OF ORGANIC TANNING AND RETANNING AGENTS ON ACTIVATED SLUDGE[OL].[13 January 2010] http://en.paper.edu.cn/en_releasepaper/content/38881


	10. Biodegradability Evaluation of Typical Leather Chemicals (Iii)-The Biodegradation Behaviours of Vegetable Tannin Extracts
	He Qiang,Shi Bi
	Chemical Engineering 11 January 2010
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	Abstract:The short- and long-term biodegradation behaviours of wattle, bayberry, valonia and chestnut tannin extracts, widely employed as vegetable tanning agents in leather industry, were studied in this paper. The results indicated that the four tannin extracts are biodegradable and should not show toxic effects on the respiration of activated sludge organisms. It is proved that the short-term biodegradabilities of the four tannin extracts are concentration dependent. Low concentration of the tannin extracts could be effectively biodegraded, but the biodegradation processes should be retarded when they present in wastewater at high concentrations, owing to the inhibitory effects of tannins on activated sludge process. In general, the short-term biodegradability of the four tannin extracts follows the sequence: valonia>chestnut>bayberry>wattle. The long-term biodegradation behaviours of the four tannin extracts showed that they could be thoroughly biodegraded with the prolongation of activated sludge process, even if they present in wastewater at high concentrations. It is therefore suggested that both the condensed tannin extracts (wattle and bayberry extracts) and the hydrolysable ones (valonia and chestnut extracts) are environmentally friendly leather chemicals, in consideration of their biodegradabilities.
	TO cite this article:He Qiang,Shi Bi. Biodegradability Evaluation of Typical Leather Chemicals (Iii)-The Biodegradation Behaviours of Vegetable Tannin Extracts[OL].[11 January 2010] http://en.paper.edu.cn/en_releasepaper/content/38771

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