The Experts below are selected from a list of 279 Experts worldwide ranked by ideXlab platform
Xiaoming Li - One of the best experts on this subject based on the ideXlab platform.
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is denitrifying anaerobic methane oxidation centered technologies a solution for the sustainable operation of wastewater treatment plants
Bioresource Technology, 2017Co-Authors: Dongbo Wang, Yali Wang, Yu Lian, Jianwei Zhao, Fei Chen, Qi Yang, Guangming Zeng, Xiaoming LiAbstract:With the world’s increasing Energy crisis, society is growingly considered that the operation of wastewater treatment plants (WWTPs) should be shifted in sustainable paradigms with Low Energy Input, or Energy-neutral, or even Energy output. There is a lack of critical thinking on whether and how new paradigms can be implemented in WWTPs based on the conventional process. The denitrifying anaerobic methane oxidation (DAMO) process, which uses methane and nitrate (or nitrite) as electron donor and acceptor, respectively, has recently been discovered. Based on critical analyses of this process, DAMO-centered technologies can be considered as a solution for sustainable operation of WWTPs. In this review, a possible strategy with DAMO-centered technologies was outlined and illustrated how this applies for the existing WWTPs Energy-saving and newly designed WWTPs Energy-neutral (or even Energy-producing) towards sustainable operations.
Yoshihiko Murakami - One of the best experts on this subject based on the ideXlab platform.
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unexpected and successful one step formation of porous polymeric particles only by mixing organic solvent and water under Low Energy Input conditions
Langmuir, 2014Co-Authors: Taku Takami, Yoshihiko MurakamiAbstract:We found that porous particles were unexpectedly obtained in a “one-step” manner only by mixing an organic solvent and water under “Low-Energy-Input” (i.e., Low-homogenization-rate) conditions. This phenomenon was attributable to the unexpected formation of the spontaneously formed water-in-oil (w/o) emulsions in the droplets of o/w emulsions. The unexpected formation resulted in the successful formation of water-in-oil-in-water (w/o/w) emulsions instead of o/w emulsions, although the mixed solution containing both an organic solvent and water were simply emulsified in the presence of block copolymers. The present study clarifies the effects of the various preparation conditions on the morphology of unexpected w/o/w emulsions and resulting particles. The porous particles are expected to be suitable drug carriers for pulmonary delivery. The results obtained in the present study show that a newly developed one-step emulsification can be a powerful and facile technique for preparing porous polymeric particles.
Daniel Cluzeau - One of the best experts on this subject based on the ideXlab platform.
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Earthworm effects on gaseous emissions during vermifiltration of pig fresh slurry.
Bioresource Technology, 2011Co-Authors: Luth Luth, Paul Robin, Philippe Germain, Marcel Lecomte, Brigitte Landrain, Y.s. Li, Daniel CluzeauAbstract:Treatment of liquid manure can result in the production of ammonia, nitrous oxide and methane. Earthworms mix and transform nitrogen and carbon without consuming additional Energy. The objective of this paper is to analyse whether earthworms modify the emissions of NH3, N2O, CH4 and CO2 during vermifiltration of pig slurry. The experiment used mesocosms of around 50 L, made from a vermifilter treating the diluted manure of a swine house. Three levels of slurry were added to the mesocosms, with or without earthworms, during one month, in triplicate. Earthworm abundance and gas emissions were measured three and five times, respectively. There was a decrease in emissions of ammonia and nitrous oxide and a sink of methane in treatments with earthworms. We suggest that earthworm abundance can be used as a bioindicator of Low Energy Input, and Low greenhouse gas and ammonia output in systems using fresh slurry with water recycling.
Jason C Quinn - One of the best experts on this subject based on the ideXlab platform.
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Low Energy Input continuous fLow rapid pre concentration of microalgae through electro coagulation flocculation
Chemical Engineering Journal, 2016Co-Authors: Teodora Rutar Shuman, Gregory Mason, Daniel Reeve, Alexander Schacht, Ann Goodrich, Katerine Napan, Jason C QuinnAbstract:Abstract This study demonstrates that Nannochloropsis sp. can be effectively pre-concentrated by separation from its growth medium (0.28–0.36 g/L) using electro-coagulation–flocculation (ECF) in a continuous fLow reactor with both nickel and aluminum electrodes spaced 6.35 mm apart. FLow rates studied range between 0.4 and 3.9 L/min. Treatment uses Energy Inputs between 0.08 and 6.43 kWh/m3 and voltages between 4 and 20 V. This paper describes a novel method that subjects fLowing fluid to direct current for a very short time (between 0.8 and 7.5 s), upon which algae rapidly separate, approximately 30 min after ECF treatment. Fluid fLow rate decreases ECF Efficiency as compared to batch tests. Maximum ECF Efficiency recorded in this study was 92% at 0.4 L/min and 7 V with nickel electrodes. Higher voltage Inputs and Lower fLow rates result in higher ECF Efficiencies. However, the ratio of ECF Efficiency to Energy Input is the highest for the Lowest voltage Inputs and highest fLow rates. Treatments of 3.9 L/min fLow rate and 6 V resulted in the highest ratio of ECF Efficiency to Energy Input (151 and 406%/(kWh/m3) for nickel and aluminum electrodes respectively). The ECF processing leaves a large number of viable algal cells that are separated from their growth medium, 40–60% under conditions studied. Metals analysis shows the microalgae, after ECF treatment with nickel and aluminum electrodes at 8 V and fLow rate of 0.8 L/min, sorbs a significant amount of metal, 348.6 ± 66.7 mgNi/gdry biomass and 125.2 ± 15.2 mgAl/gdry biomass.
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Low-Energy Input continuous fLow rapid pre-concentration of microalgae through electro-coagulation–flocculation
Chemical Engineering Journal, 2016Co-Authors: Teodora Rutar Shuman, Gregory Mason, Daniel Reeve, Alexander Schacht, Ann Goodrich, Katerine Napan, Jason C QuinnAbstract:Abstract This study demonstrates that Nannochloropsis sp. can be effectively pre-concentrated by separation from its growth medium (0.28–0.36 g/L) using electro-coagulation–flocculation (ECF) in a continuous fLow reactor with both nickel and aluminum electrodes spaced 6.35 mm apart. FLow rates studied range between 0.4 and 3.9 L/min. Treatment uses Energy Inputs between 0.08 and 6.43 kWh/m3 and voltages between 4 and 20 V. This paper describes a novel method that subjects fLowing fluid to direct current for a very short time (between 0.8 and 7.5 s), upon which algae rapidly separate, approximately 30 min after ECF treatment. Fluid fLow rate decreases ECF Efficiency as compared to batch tests. Maximum ECF Efficiency recorded in this study was 92% at 0.4 L/min and 7 V with nickel electrodes. Higher voltage Inputs and Lower fLow rates result in higher ECF Efficiencies. However, the ratio of ECF Efficiency to Energy Input is the highest for the Lowest voltage Inputs and highest fLow rates. Treatments of 3.9 L/min fLow rate and 6 V resulted in the highest ratio of ECF Efficiency to Energy Input (151 and 406%/(kWh/m3) for nickel and aluminum electrodes respectively). The ECF processing leaves a large number of viable algal cells that are separated from their growth medium, 40–60% under conditions studied. Metals analysis shows the microalgae, after ECF treatment with nickel and aluminum electrodes at 8 V and fLow rate of 0.8 L/min, sorbs a significant amount of metal, 348.6 ± 66.7 mgNi/gdry biomass and 125.2 ± 15.2 mgAl/gdry biomass.
K Koch - One of the best experts on this subject based on the ideXlab platform.
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Energy positive sewage sludge pre treatment with a novel ultrasonic flatbed reactor at Low Energy Input
Bioresource Technology, 2018Co-Authors: Thomas Lippert, J Bandelin, Alexandra Musch, Jorg E Drewes, K KochAbstract:Abstract The performance of a novel ultrasonic flatbed reactor for sewage sludge pre-treatment was assessed for three different waste activated sludges. The study systematically investigated the impact of specific Energy Input (200 – 3,000 kJ/kgTS) on the degree of disintegration (DDCOD, i.e. ratio between ultrasonically and maximum chemically solubilized COD) and methane production enhancement. Relationship between DDCOD and Energy Input was linear, for all sludges tested. Methane yields were significantly increased for both Low (200 kJ/kgTS) and high (2,000 – 3,000 kJ/kgTS) Energy Inputs, while intermediate Inputs (400 – 1,000 kJ/kgTS) showed no significant improvement. High Inputs additionally accelerated reaction kinetics, but were limited to similar gains as Low Inputs (max. 12%), despite the considerably higher DDCOD values. Energy balance was only positive for 200 kJ/kgTS-treatments, with a maximum Energy recovery of 122%. Results suggest that floc deagglomeration rather than cell lysis (DDCOD = 1% – 5% at 200 kJ/kgTS) is the key principle of Energy-positive sludge sonication.
