The Experts below are selected from a list of 192 Experts worldwide ranked by ideXlab platform
Yongzhen Peng - One of the best experts on this subject based on the ideXlab platform.
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efficient partial denitrification anammox pd a process through gas Mixing Strategy system evaluation and microbial analysis
Bioresource Technology, 2020Co-Authors: Rui Du, Xiangchen Li, Jincheng Wang, Yongzhen PengAbstract:Abstract Partial denitrification (PD, NO3−-N → NO2−-N) provides a promising opportunity for anammox application in wastewater nitrogen removal. In this study, a continuous-flow PD/Anammox (PD/A) process operated with a novel gas Mixing was reported in an up-flow anaerobic bed reactor. A high nitrogen removal rate of 2.42 kgN/(m3∙d) was achieved at a relatively short hydraulic retention time (HRT) of 0.5 h with both influent NH4+-N and NO3−-N of 30 mg/L. Sludge floatation was eliminated by Mixing with gas of the reactor due to an efficiently improved mass transfer. Further optimization of gas flowrates at high NLR could avoid the overproduction of tight-bound extracellular polymeric substances (TB-EPS) and benefit sludge stability. Functional microorganisms of PD and anammox were effectively retained, and Zoogloea affecting sludge settleability kept increasing throughout the operation. This study clearly demonstrated the effectiveness of gas Mixing Strategy for a high-rate continuous-flow PD/A process with stable nitrogen removal performance.
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Efficient partial-denitrification/anammox (PD/A) process through gas-Mixing Strategy: System evaluation and microbial analysis.
Bioresource Technology, 2019Co-Authors: Rui Du, Xiangchen Li, Jincheng Wang, Yongzhen PengAbstract:Abstract Partial denitrification (PD, NO3−-N → NO2−-N) provides a promising opportunity for anammox application in wastewater nitrogen removal. In this study, a continuous-flow PD/Anammox (PD/A) process operated with a novel gas Mixing was reported in an up-flow anaerobic bed reactor. A high nitrogen removal rate of 2.42 kgN/(m3∙d) was achieved at a relatively short hydraulic retention time (HRT) of 0.5 h with both influent NH4+-N and NO3−-N of 30 mg/L. Sludge floatation was eliminated by Mixing with gas of the reactor due to an efficiently improved mass transfer. Further optimization of gas flowrates at high NLR could avoid the overproduction of tight-bound extracellular polymeric substances (TB-EPS) and benefit sludge stability. Functional microorganisms of PD and anammox were effectively retained, and Zoogloea affecting sludge settleability kept increasing throughout the operation. This study clearly demonstrated the effectiveness of gas Mixing Strategy for a high-rate continuous-flow PD/A process with stable nitrogen removal performance.
Rui Du - One of the best experts on this subject based on the ideXlab platform.
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efficient partial denitrification anammox pd a process through gas Mixing Strategy system evaluation and microbial analysis
Bioresource Technology, 2020Co-Authors: Rui Du, Xiangchen Li, Jincheng Wang, Yongzhen PengAbstract:Abstract Partial denitrification (PD, NO3−-N → NO2−-N) provides a promising opportunity for anammox application in wastewater nitrogen removal. In this study, a continuous-flow PD/Anammox (PD/A) process operated with a novel gas Mixing was reported in an up-flow anaerobic bed reactor. A high nitrogen removal rate of 2.42 kgN/(m3∙d) was achieved at a relatively short hydraulic retention time (HRT) of 0.5 h with both influent NH4+-N and NO3−-N of 30 mg/L. Sludge floatation was eliminated by Mixing with gas of the reactor due to an efficiently improved mass transfer. Further optimization of gas flowrates at high NLR could avoid the overproduction of tight-bound extracellular polymeric substances (TB-EPS) and benefit sludge stability. Functional microorganisms of PD and anammox were effectively retained, and Zoogloea affecting sludge settleability kept increasing throughout the operation. This study clearly demonstrated the effectiveness of gas Mixing Strategy for a high-rate continuous-flow PD/A process with stable nitrogen removal performance.
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Efficient partial-denitrification/anammox (PD/A) process through gas-Mixing Strategy: System evaluation and microbial analysis.
Bioresource Technology, 2019Co-Authors: Rui Du, Xiangchen Li, Jincheng Wang, Yongzhen PengAbstract:Abstract Partial denitrification (PD, NO3−-N → NO2−-N) provides a promising opportunity for anammox application in wastewater nitrogen removal. In this study, a continuous-flow PD/Anammox (PD/A) process operated with a novel gas Mixing was reported in an up-flow anaerobic bed reactor. A high nitrogen removal rate of 2.42 kgN/(m3∙d) was achieved at a relatively short hydraulic retention time (HRT) of 0.5 h with both influent NH4+-N and NO3−-N of 30 mg/L. Sludge floatation was eliminated by Mixing with gas of the reactor due to an efficiently improved mass transfer. Further optimization of gas flowrates at high NLR could avoid the overproduction of tight-bound extracellular polymeric substances (TB-EPS) and benefit sludge stability. Functional microorganisms of PD and anammox were effectively retained, and Zoogloea affecting sludge settleability kept increasing throughout the operation. This study clearly demonstrated the effectiveness of gas Mixing Strategy for a high-rate continuous-flow PD/A process with stable nitrogen removal performance.
Xiangchen Li - One of the best experts on this subject based on the ideXlab platform.
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efficient partial denitrification anammox pd a process through gas Mixing Strategy system evaluation and microbial analysis
Bioresource Technology, 2020Co-Authors: Rui Du, Xiangchen Li, Jincheng Wang, Yongzhen PengAbstract:Abstract Partial denitrification (PD, NO3−-N → NO2−-N) provides a promising opportunity for anammox application in wastewater nitrogen removal. In this study, a continuous-flow PD/Anammox (PD/A) process operated with a novel gas Mixing was reported in an up-flow anaerobic bed reactor. A high nitrogen removal rate of 2.42 kgN/(m3∙d) was achieved at a relatively short hydraulic retention time (HRT) of 0.5 h with both influent NH4+-N and NO3−-N of 30 mg/L. Sludge floatation was eliminated by Mixing with gas of the reactor due to an efficiently improved mass transfer. Further optimization of gas flowrates at high NLR could avoid the overproduction of tight-bound extracellular polymeric substances (TB-EPS) and benefit sludge stability. Functional microorganisms of PD and anammox were effectively retained, and Zoogloea affecting sludge settleability kept increasing throughout the operation. This study clearly demonstrated the effectiveness of gas Mixing Strategy for a high-rate continuous-flow PD/A process with stable nitrogen removal performance.
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Efficient partial-denitrification/anammox (PD/A) process through gas-Mixing Strategy: System evaluation and microbial analysis.
Bioresource Technology, 2019Co-Authors: Rui Du, Xiangchen Li, Jincheng Wang, Yongzhen PengAbstract:Abstract Partial denitrification (PD, NO3−-N → NO2−-N) provides a promising opportunity for anammox application in wastewater nitrogen removal. In this study, a continuous-flow PD/Anammox (PD/A) process operated with a novel gas Mixing was reported in an up-flow anaerobic bed reactor. A high nitrogen removal rate of 2.42 kgN/(m3∙d) was achieved at a relatively short hydraulic retention time (HRT) of 0.5 h with both influent NH4+-N and NO3−-N of 30 mg/L. Sludge floatation was eliminated by Mixing with gas of the reactor due to an efficiently improved mass transfer. Further optimization of gas flowrates at high NLR could avoid the overproduction of tight-bound extracellular polymeric substances (TB-EPS) and benefit sludge stability. Functional microorganisms of PD and anammox were effectively retained, and Zoogloea affecting sludge settleability kept increasing throughout the operation. This study clearly demonstrated the effectiveness of gas Mixing Strategy for a high-rate continuous-flow PD/A process with stable nitrogen removal performance.
Jincheng Wang - One of the best experts on this subject based on the ideXlab platform.
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efficient partial denitrification anammox pd a process through gas Mixing Strategy system evaluation and microbial analysis
Bioresource Technology, 2020Co-Authors: Rui Du, Xiangchen Li, Jincheng Wang, Yongzhen PengAbstract:Abstract Partial denitrification (PD, NO3−-N → NO2−-N) provides a promising opportunity for anammox application in wastewater nitrogen removal. In this study, a continuous-flow PD/Anammox (PD/A) process operated with a novel gas Mixing was reported in an up-flow anaerobic bed reactor. A high nitrogen removal rate of 2.42 kgN/(m3∙d) was achieved at a relatively short hydraulic retention time (HRT) of 0.5 h with both influent NH4+-N and NO3−-N of 30 mg/L. Sludge floatation was eliminated by Mixing with gas of the reactor due to an efficiently improved mass transfer. Further optimization of gas flowrates at high NLR could avoid the overproduction of tight-bound extracellular polymeric substances (TB-EPS) and benefit sludge stability. Functional microorganisms of PD and anammox were effectively retained, and Zoogloea affecting sludge settleability kept increasing throughout the operation. This study clearly demonstrated the effectiveness of gas Mixing Strategy for a high-rate continuous-flow PD/A process with stable nitrogen removal performance.
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Efficient partial-denitrification/anammox (PD/A) process through gas-Mixing Strategy: System evaluation and microbial analysis.
Bioresource Technology, 2019Co-Authors: Rui Du, Xiangchen Li, Jincheng Wang, Yongzhen PengAbstract:Abstract Partial denitrification (PD, NO3−-N → NO2−-N) provides a promising opportunity for anammox application in wastewater nitrogen removal. In this study, a continuous-flow PD/Anammox (PD/A) process operated with a novel gas Mixing was reported in an up-flow anaerobic bed reactor. A high nitrogen removal rate of 2.42 kgN/(m3∙d) was achieved at a relatively short hydraulic retention time (HRT) of 0.5 h with both influent NH4+-N and NO3−-N of 30 mg/L. Sludge floatation was eliminated by Mixing with gas of the reactor due to an efficiently improved mass transfer. Further optimization of gas flowrates at high NLR could avoid the overproduction of tight-bound extracellular polymeric substances (TB-EPS) and benefit sludge stability. Functional microorganisms of PD and anammox were effectively retained, and Zoogloea affecting sludge settleability kept increasing throughout the operation. This study clearly demonstrated the effectiveness of gas Mixing Strategy for a high-rate continuous-flow PD/A process with stable nitrogen removal performance.
Saikat Chakraborty - One of the best experts on this subject based on the ideXlab platform.
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microreactor based Mixing Strategy suppresses product inhibition to enhance sugar yields in enzymatic hydrolysis for cellulosic biofuel production
Bioresource Technology, 2017Co-Authors: Saikat Chakraborty, Prasun Kumar Singh, Pawan ParamashettiAbstract:Abstract A novel microreactor-based energy-efficient process of using complete convective Mixing in a macroreactor till an optimal Mixing time followed by no Mixing in 200–400 μl microreactors enhances glucose and reducing sugar yields by upto 35% and 29%, respectively, while saving 72–90% of the energy incurred on reactor Mixing in the enzymatic hydrolysis of cellulose. Empirical exponential relations are provided for determining the optimal Mixing time, during which convective Mixing in the macroreactor promotes mass transport of the cellulase enzyme to the solid Avicel substrate, while the latter phase of no Mixing in the microreactor suppresses product inhibition by preventing the inhibitors (glucose and cellobiose) from homogenizing across the reactor. Sugar yield increases linearly with liquid to solid height ratio (rh), irrespective of substrate loading and microreactor size, since large rh allows the inhibitors to diffuse in the liquid away from the solids, thus reducing product inhibition.
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a novel Mixing Strategy for maximizing yields of glucose and reducing sugar in enzymatic hydrolysis of cellulose
Bioresource Technology, 2013Co-Authors: Saikat ChakrabortyAbstract:Abstract This work explores the effects of Mixing on enzymatic hydrolysis of cellulose to innovate a novel Mixing Strategy that maximizes glucose and reducing sugar yields for production of cellulosic ethanol while reducing the power required for reactor Mixing. Batch experiments of cellulose hydrolysis are performed under aseptic conditions for 72 h at various substrate loading (2–6% wt./vol.), where the reactor Mixing is terminated after different intervals of time ranging from 0 to 72 h. We find that initial Mixing for a certain ‘optimal Mixing time’ followed by no Mixing for the rest of the reaction time maximizes glucose and reducing sugar yields. We report a maximum of 26% and 31% increase in glucose and reducing yields, respectively, in case of optimal Mixing over continuous Mixing for 2% substrate loading. We obtain an algebraic expression that predicts that the optimal Mixing time increases exponentially with substrate loading.