Analysis of the concentration polarization and fouling dynamic resistances under reverse osmosis membrane treatment of olive mill wastewater

Ochando-Pulido, J.M.; Verardo, Vito; Segura‐Carretero, Antonio; Martinez-Ferez, A.

doi:10.1016/j.jiec.2015.06.017

Cited by 15 publications

(6 citation statements)

References 47 publications

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“…Recovering water from flue gas can reduce water consumption and improve water resource utilization efficiency in thermal power plants. Extensive research and application of ceramic membranes in the field of flue gas moisture recovery have been conducted, attributing to their excellent mechanical strength and acid resistance . The transport membrane condenser (TMC) was pilot‐tested on a gas‐fired boiler for recovering water and waste heat, the results showed that the water vapor recovery efficiency exceeded 40% while simultaneously improving the boiler efficiency by more than 5% .…”

Section: Introductionmentioning

confidence: 99%

“…Extensive research and application of ceramic membranes in the field of flue gas moisture recovery have been conducted, attributing to their excellent mechanical strength and acid resistance. 11,12 The transport membrane condenser (TMC) was pilot-tested on a gas-fired boiler for recovering water and waste heat, the results showed that the water vapor recovery efficiency exceeded 40% while simultaneously improving the boiler efficiency by more than 5%. 3 Since then, other research teams have conducted moisture recovery experiments and theoretical studies on single ceramic membrane tubes and membrane modules by simulating flue gas and gas-fired boiler flue gas.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study on water recovery and SO ₂ permeability of ceramic membranes with different pore sizes

2020

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Summary In this study, the water recovery performance from flue gas with ceramic membrane tubes of different pore sizes 30, 50, and 200 nm was experimentally studied. The effects of flue gas temperature, flue gas flow rate, water coolant temperature, and water coolant flow rate on the water recovery performance were analyzed. In addition, in the experimental study of SO2 permeability, the pH of the water coolant inlet and outlet was measured using a pH meter to analyze the SO2 permeability of ceramic membranes during the water recovery process. The results show that the water recovery performance of the 50 nm pore size ceramic membrane is better than that of the other two types of ceramic membrane in most cases. The maximum amount of reclaimed water and the highest water recovery rate are 4.82 kg/(m2·h) and 80.3%, respectively. Under the same SO2 concentration condition, the SO2 permeation flux of the 30 nm pore size ceramic membrane is smallest, and that of the 200 nm membrane is the largest. When the SO2/N2 mixed gas flow rate is 6 L/min, the SO2 permeation flux of the 30 and 200 nm membranes is 0.407 and 0.635 mmol/(m2·h), respectively. The ceramic membrane with smaller pore size can block more SO2 permeation, while the ceramic membrane with larger pore size can remove SO2 better.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental study on water recovery and SO ₂ permeability of ceramic membranes with different pore sizes

2020

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“…As shown in Figure 2, even though the maximum permeate flux offered by the AK-RO membrane is above that of the SC-RO one at much lower pressure, the analysis of the dynamic operation of the membrane is of key importance, since it reveals that the flux yielded by the former membrane quickly decreases, due to concentration polarisation and fouling phenomena being more critical for this membrane. In fact, this can be explained by the much rougher surface of the AK membrane in contrast with the SC one [20].…”

Section: Resultsmentioning

confidence: 99%

Analysis of the Flux Performance of Different RO/NF Membranes in the Treatment of Agroindustrial Wastewater by Means of the Boundary Flux Theory

2018

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Dynamic membrane system behaviour must be adequately addressed to avoid process unfeasibility. The lack of proper analysis will mean relying on erroneous permeate flux values in the system design, which will lead to quick and/or steady high fouling rates. In this paper, the authors present additional data supporting the boundary flux theory as a helpful tool for membrane engineers to carefully avoid process failures. By fitting the dynamic permeate flux data to the boundary flux model, it was possible to calculate the β fouling index for the three selected membranes (one nanofiltration (NF) and two reverse osmosis (RO) ones). The dynamic flux given by the low-pressure RO membrane did not follow sub-boundary operating conditions, since a sharp flux loss was measured throughout the whole operating cycle, pinpointing that supra-boundary flux conditions were governing the system. This was supported by the calculated value of the β fouling parameter, which resulted to be in the order of ten times higher for this membrane. However, the values of β→0 for the SC-RO and DK-NF ones, supported by the very low value of the sub-boundary fouling parameter α (0.002 and 0.007 L·h−1·m−2·bar−2, respectively), ensure nearly boundary operating conditions for these membranes.

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“…The energy consumption in the biological treatment stage accounts for more than 50% of the total energy consumption, which is the most important energy-savings part for the wastewater treatment plant [184]. The main energy-saving methods are shown as follows: reduce pipeline resistance and pipeline leakage, install the blower as close as possible to the outer wall, use the blower frequency control technology; use DO control technology to control the air volume, use a low-resistance and anti-blocking micro-hole tube Aerator, arrange the aerator rationally, increase the aeration facilities at the front-end of the aeration tank, and reduce the amount of aeration at the back end [185].…”

Section: Conclusion and Prospectsmentioning

confidence: 99%

Integration of Green Energy and Advanced Energy-Efficient Technologies for Municipal Wastewater Treatment Plants

Guo

Sun

Pan

et al. 2019

IJERPH

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Wastewater treatment can consume a large amount of energy to meet discharge standards. However, wastewater also contains resources which could be recovered for secondary uses under proper treatment. Hence, the goal of this paper is to review the available green energy and biomass energy that can be utilized in wastewater treatment plants. Comprehensive elucidation of energy-efficient technologies for wastewater treatment plants are revealed. For these energy-efficient technologies, this review provides an introduction and current application status of these technologies as well as key performance indicators for the integration of green energy and energy-efficient technologies. There are several assessment perspectives summarized in the evaluation of the integration of green energy and energy-efficient technologies in wastewater treatment plants. To overcome the challenges in wastewater treatment plants, the Internet of Things (IoT) and green chemistry technologies for the water and energy nexus are proposed. The findings of this review are highly beneficial for the development of green energy and energy-efficient wastewater treatment plants. Future research should investigate the integration of green infrastructure and ecologically advanced treatment technologies to explore the potential benefits and advantages.

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Analysis of the concentration polarization and fouling dynamic resistances under reverse osmosis membrane treatment of olive mill wastewater

Cited by 15 publications

References 47 publications

Experimental study on water recovery and SO ₂ permeability of ceramic membranes with different pore sizes

Experimental study on water recovery and SO ₂ permeability of ceramic membranes with different pore sizes

Analysis of the Flux Performance of Different RO/NF Membranes in the Treatment of Agroindustrial Wastewater by Means of the Boundary Flux Theory

Integration of Green Energy and Advanced Energy-Efficient Technologies for Municipal Wastewater Treatment Plants

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Analysis of the concentration polarization and fouling dynamic resistances under reverse osmosis membrane treatment of olive mill wastewater

Cited by 15 publications

References 47 publications

Experimental study on water recovery and SO 2 permeability of ceramic membranes with different pore sizes

Experimental study on water recovery and SO 2 permeability of ceramic membranes with different pore sizes

Analysis of the Flux Performance of Different RO/NF Membranes in the Treatment of Agroindustrial Wastewater by Means of the Boundary Flux Theory

Integration of Green Energy and Advanced Energy-Efficient Technologies for Municipal Wastewater Treatment Plants

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Experimental study on water recovery and SO ₂ permeability of ceramic membranes with different pore sizes

Experimental study on water recovery and SO ₂ permeability of ceramic membranes with different pore sizes