The Experts below are selected from a list of 255 Experts worldwide ranked by ideXlab platform
Zhaoliang Wu - One of the best experts on this subject based on the ideXlab platform.
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recovery of silk sericin from the filature wastewater by using a novel foam Fractionation Column
Chemical Engineering and Processing, 2018Co-Authors: Na Li, Zhaoliang Wu, Yanyan Xu, Ke Lu, Yanli ZhaoAbstract:Abstract Silk industry was an important mainstay of Asian textile industry. However, a large volume of filature wastewater is produced during the cocoon cooking step and it might lead to severe environment pollution without effective treatment. In fact, the wastewater contained an important and valuable protein, silk sericin. In this work, foam Fractionation was purposed to recover silk sericin (SS) from the filature wastewater. A novel Column with groined internal component (GIC) was developed for strengthening foam Fractionation at room temperature. Compared with the control Column, the collected foam from the experimental Column possessed of a low liquid holdup because the low gas-liquid weakened the viscous effect caused by the rising velocity of the bubbles, when the rising foam passed through the corner channels creased by GIC. Under the suitable operating conditions of pH 4.0, length of GIC 400 mm, volumetric air flow rate 200 mL/min and pore diameter of gas distributor 180 μm, the enrichment ratio and the recovery percentage of SS reached 6.77 and 80.29%, respectively. This work is expected to provide a cost-effective technique to recover SS from the filature wastewater, and to facilitate the industrialization of foam Fractionation in wastewater treatment.
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removal of pyridine from its wastewater by using a novel foam Fractionation Column
Chemical Engineering Journal, 2017Co-Authors: Di Huang, Zhaoliang Wu, Yanrui Chen, Nan HuAbstract:Abstract Many of pyridine compounds are considered as typical hazardous refractory organics due to their acute toxic properties and teratogenic effects. Therefore, it is great significant to develop a separation technology with the characters of low energy consumption and environmental compatibility to efficiently remove pyridine from its wastewater. In this work, foam Fractionation was used to remove pyridine from its wastewater and a novel foam Fractionation Column was designed for enhancing interfacial adsorption by vertical sieve tray and strengthening foam drainage by floating tongue type tray, in which bubble diameter was monitored for adjusting feeding flow rate and air flow rate in the continuous foam Fractionation process. By comparing the foam properties and the adsorption properties of three anionic surfactants (sodium dodecyl sulfate, sodium alcohol ether sulfate and sodium alpha-olefin sulfonate), sodium dodecyl sulfate was chosen as the optimal collector to remove pyridine at pH 4.5. Under the optimal operating conditions, the enrichment ratio and removal percentage of pyridine could reach as high as 34.5 and 90.2%, simultaneously. Above results indicated that foam Fractionation was a practicable technology to efficiently remove a hazardous material from its wastewater by designing an effective foam Fractionation Column.
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recovery of yam mucilage from the yam starch processing wastewater by using a novel foam Fractionation Column
Separation and Purification Technology, 2016Co-Authors: Hongzhen Li, Nan Hu, Zhaoliang Wu, Zhiqiang Li, Di HuangAbstract:Abstract It is difficult to separate a surface-active material from a wastewater with a high viscosity by foam Fractionation. In order to solve the problem, a novel foam Fractionation Column with vertical sieve tray (VST) placed in the foam phase was developed for effectively recovering yam mucilage from the viscous yam starch processing wastewater. The effects of design parameters of VST on its foam drainage properties were investigated. The results showed that the suitable design parameters of VST were the number of trays in VST 5, the number of vertical sieve caps in each tray 4 and the number of sieve pores in each cap 28. Meanwhile, the suitable operating conditions were also determined. Under the conditions of pH 6.0, temperature 25 °C, volumetric air flow rate 50 mL/min and loading liquid volume 500 mL, the enrichment ratio and recovery percentage of yam mucilage were 5.70 and 91.21%, respectively, which were 3.77 and 1.55 times higher than those in the control Column. The above results indicated that the novel foam Fractionation Column with VST in the foam phase could simultaneously improve the enrichment ratio and the recovery percentage of yam mucilage by strengthening foam drainage. This work was aimed at developing a novel foam Fractionation Column for effectively recovering a valuable byproduct from a viscous food processing wastewater and further facilitating the industrial application of foam Fractionation in food industry.
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separation of bovine serum albumin by foam Fractionation with sieve tray Column
Separation Science and Technology, 2015Co-Authors: Zhiqiang Li, Huijie Zheng, Zhaoliang WuAbstract:A batch foam Fractionation Column with sieve trays was developed for enhancing the foam drainage. Effects of feeding concentration, air flow rate, number of stages, and sieve pore size on foam Fractionation performances were investigated. The results indicated that the sieve trays enhanced the foam drainage effectively and improved enrichment ratio. At the liquid loading volume 490 mL, feeding concentration 0.1 g L−1, and air flow rate 300 mL min−1, the enrichment ratio reached 7.56 by using 10 stages of sieve trays with opening ratio of 38.25%, which was 1.84 times of that obtained by the control Column.
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separation of bovine serum albumin by foam Fractionation with wire gauze structured packing Column
Applied Biochemistry and Biotechnology, 2015Co-Authors: Zhiqiang Li, Huijie Zheng, Zhaoliang WuAbstract:In order to enhance foam drainage, a novel foam Fractionation Column with the wire gauze structured packing was developed. The performances of the packing were evaluated by investigating its effects on bubble size, liquid holdup, enrichment ratio, and recovery percentage efficiency under different conditions using bovine serum albumin (BSA) aqueous solution as a model. The results showed that the packing could accelerate the bubble collapse, reduce the liquid holdup, enhance the foam drainage, and improve the BSA enrichment ratio. Specifically, the best BSA enrichment ratio was 21.78 at the liquid loading volume of 490 mL, air flow rate of 300 mL min−1, feeding BSA concentration of 0.10 g L−1, packing bed height of 300 mm, and feeding pH 6.2. It was 2.44 times of the BSA enrichment ratio obtained with the control Column.
Di Huang - One of the best experts on this subject based on the ideXlab platform.
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removal of pyridine from its wastewater by using a novel foam Fractionation Column
Chemical Engineering Journal, 2017Co-Authors: Di Huang, Zhaoliang Wu, Yanrui Chen, Nan HuAbstract:Abstract Many of pyridine compounds are considered as typical hazardous refractory organics due to their acute toxic properties and teratogenic effects. Therefore, it is great significant to develop a separation technology with the characters of low energy consumption and environmental compatibility to efficiently remove pyridine from its wastewater. In this work, foam Fractionation was used to remove pyridine from its wastewater and a novel foam Fractionation Column was designed for enhancing interfacial adsorption by vertical sieve tray and strengthening foam drainage by floating tongue type tray, in which bubble diameter was monitored for adjusting feeding flow rate and air flow rate in the continuous foam Fractionation process. By comparing the foam properties and the adsorption properties of three anionic surfactants (sodium dodecyl sulfate, sodium alcohol ether sulfate and sodium alpha-olefin sulfonate), sodium dodecyl sulfate was chosen as the optimal collector to remove pyridine at pH 4.5. Under the optimal operating conditions, the enrichment ratio and removal percentage of pyridine could reach as high as 34.5 and 90.2%, simultaneously. Above results indicated that foam Fractionation was a practicable technology to efficiently remove a hazardous material from its wastewater by designing an effective foam Fractionation Column.
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recovery of yam mucilage from the yam starch processing wastewater by using a novel foam Fractionation Column
Separation and Purification Technology, 2016Co-Authors: Hongzhen Li, Nan Hu, Zhaoliang Wu, Zhiqiang Li, Di HuangAbstract:Abstract It is difficult to separate a surface-active material from a wastewater with a high viscosity by foam Fractionation. In order to solve the problem, a novel foam Fractionation Column with vertical sieve tray (VST) placed in the foam phase was developed for effectively recovering yam mucilage from the viscous yam starch processing wastewater. The effects of design parameters of VST on its foam drainage properties were investigated. The results showed that the suitable design parameters of VST were the number of trays in VST 5, the number of vertical sieve caps in each tray 4 and the number of sieve pores in each cap 28. Meanwhile, the suitable operating conditions were also determined. Under the conditions of pH 6.0, temperature 25 °C, volumetric air flow rate 50 mL/min and loading liquid volume 500 mL, the enrichment ratio and recovery percentage of yam mucilage were 5.70 and 91.21%, respectively, which were 3.77 and 1.55 times higher than those in the control Column. The above results indicated that the novel foam Fractionation Column with VST in the foam phase could simultaneously improve the enrichment ratio and the recovery percentage of yam mucilage by strengthening foam drainage. This work was aimed at developing a novel foam Fractionation Column for effectively recovering a valuable byproduct from a viscous food processing wastewater and further facilitating the industrial application of foam Fractionation in food industry.
P J Martin - One of the best experts on this subject based on the ideXlab platform.
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competitive adsorption of surfactant protein mixtures in a continuous stripping mode foam Fractionation Column
Chemical Engineering Science, 2016Co-Authors: Ishara Kamalanathan, P J MartinAbstract:Abstract In this paper a detailed experimental study on the application of continuous stripping mode foam Fractionation to separate a model surfactant–protein mixture was performed with emphasis on the competitive adsorption behaviour and transport processes of surfactant–protein mixtures in the rising foam Column. Bubble size measurements of the foamate showed that at steady state conditions the bubbles rising from the liquid pool were stabilised by BSA. However at the top of the Column the recovery of Triton X−100 in the foamate (75–100%) was always greater than the recovery of BSA (13–76%) for all foam Fractionation experiments. The enrichment of BSA remained at almost unity for experiments with high feed concentrations of both components and low air flow rates, and only increased when the recovery of Triton X−100 reached 100%. Thus it was concluded that Triton X–100 displaced the adsorbed BSA from the surface. The surface activity and diffusivity of the two components was determined from surface tension and nuclear magnetic resonance (NMR) measurements. These results illustrated that competitive adsorption behaviour was due to the greater maximum surface pressure (2.05 times) and diffusivity (19.6 times) of Triton X−100 than BSA. In addition to investigating the effect of foam Fractionation process parameters on the separation of mixed systems, the results from the characterisation studies of surface adsorption and foam properties provided insight and deeper understanding of the competitive adsorption behaviour of surfactants and proteins in a foam Fractionation process.
Nan Hu - One of the best experts on this subject based on the ideXlab platform.
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removal of pyridine from its wastewater by using a novel foam Fractionation Column
Chemical Engineering Journal, 2017Co-Authors: Di Huang, Zhaoliang Wu, Yanrui Chen, Nan HuAbstract:Abstract Many of pyridine compounds are considered as typical hazardous refractory organics due to their acute toxic properties and teratogenic effects. Therefore, it is great significant to develop a separation technology with the characters of low energy consumption and environmental compatibility to efficiently remove pyridine from its wastewater. In this work, foam Fractionation was used to remove pyridine from its wastewater and a novel foam Fractionation Column was designed for enhancing interfacial adsorption by vertical sieve tray and strengthening foam drainage by floating tongue type tray, in which bubble diameter was monitored for adjusting feeding flow rate and air flow rate in the continuous foam Fractionation process. By comparing the foam properties and the adsorption properties of three anionic surfactants (sodium dodecyl sulfate, sodium alcohol ether sulfate and sodium alpha-olefin sulfonate), sodium dodecyl sulfate was chosen as the optimal collector to remove pyridine at pH 4.5. Under the optimal operating conditions, the enrichment ratio and removal percentage of pyridine could reach as high as 34.5 and 90.2%, simultaneously. Above results indicated that foam Fractionation was a practicable technology to efficiently remove a hazardous material from its wastewater by designing an effective foam Fractionation Column.
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recovery of yam mucilage from the yam starch processing wastewater by using a novel foam Fractionation Column
Separation and Purification Technology, 2016Co-Authors: Hongzhen Li, Nan Hu, Zhaoliang Wu, Zhiqiang Li, Di HuangAbstract:Abstract It is difficult to separate a surface-active material from a wastewater with a high viscosity by foam Fractionation. In order to solve the problem, a novel foam Fractionation Column with vertical sieve tray (VST) placed in the foam phase was developed for effectively recovering yam mucilage from the viscous yam starch processing wastewater. The effects of design parameters of VST on its foam drainage properties were investigated. The results showed that the suitable design parameters of VST were the number of trays in VST 5, the number of vertical sieve caps in each tray 4 and the number of sieve pores in each cap 28. Meanwhile, the suitable operating conditions were also determined. Under the conditions of pH 6.0, temperature 25 °C, volumetric air flow rate 50 mL/min and loading liquid volume 500 mL, the enrichment ratio and recovery percentage of yam mucilage were 5.70 and 91.21%, respectively, which were 3.77 and 1.55 times higher than those in the control Column. The above results indicated that the novel foam Fractionation Column with VST in the foam phase could simultaneously improve the enrichment ratio and the recovery percentage of yam mucilage by strengthening foam drainage. This work was aimed at developing a novel foam Fractionation Column for effectively recovering a valuable byproduct from a viscous food processing wastewater and further facilitating the industrial application of foam Fractionation in food industry.
Yanli Zhao - One of the best experts on this subject based on the ideXlab platform.
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recovery of silk sericin from the filature wastewater by using a novel foam Fractionation Column
Chemical Engineering and Processing, 2018Co-Authors: Na Li, Zhaoliang Wu, Yanyan Xu, Ke Lu, Yanli ZhaoAbstract:Abstract Silk industry was an important mainstay of Asian textile industry. However, a large volume of filature wastewater is produced during the cocoon cooking step and it might lead to severe environment pollution without effective treatment. In fact, the wastewater contained an important and valuable protein, silk sericin. In this work, foam Fractionation was purposed to recover silk sericin (SS) from the filature wastewater. A novel Column with groined internal component (GIC) was developed for strengthening foam Fractionation at room temperature. Compared with the control Column, the collected foam from the experimental Column possessed of a low liquid holdup because the low gas-liquid weakened the viscous effect caused by the rising velocity of the bubbles, when the rising foam passed through the corner channels creased by GIC. Under the suitable operating conditions of pH 4.0, length of GIC 400 mm, volumetric air flow rate 200 mL/min and pore diameter of gas distributor 180 μm, the enrichment ratio and the recovery percentage of SS reached 6.77 and 80.29%, respectively. This work is expected to provide a cost-effective technique to recover SS from the filature wastewater, and to facilitate the industrialization of foam Fractionation in wastewater treatment.
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enhancing foam drainage using foam Fractionation Column with spiral internal for separation of sodium dodecyl sulfate
Journal of Hazardous Materials, 2011Co-Authors: Quanwen Yang, Zhaoliang Wu, Yanli Zhao, Ye Wang, Rui LiAbstract:Abstract A new type of foam Fractionation Column with spiral internal had been designed for enhancing the foam drainage and thus for the removal of minute hazardous materials. The Column without spiral internal was served as the comparison Column, and an anionic surfactant sodium dodecyl sulfate (SDS) was used as the foaming solution. Effects of liquid loading volume, initial SDS concentration and superficial gas velocity on enrichment ratio and recovery percentage of SDS were investigated. The experimental results showed that the spiral Column successfully enhanced the enrichment ratio of SDS by reducing countercurrent resistance between the rising bubbles and the entrained liquid of reflux. Enrichment ratio of SDS obtained by using the spiral Column was 15.7, which was 2.5 times of that obtained by using the comparison Column under the suitable operating conditions of liquid loading volume 0.4 L, initial SDS concentration 0.2 g/L and superficial gas velocity 1.7 mm/s.
