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您的检索式：作者名="Gerardo Buelna"
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| 1 | Investigation on removal pathways of Di 2-ethyl hexyl phthalate from synthetic municipal wastewater using a submerged membrane bioreactor显示文摘Highly hydrophobic Di 2-ethyl hexyl phthalate(DEHP) is one of the most prevalent plasticizers in wastewaters. Since its half-life in biological treatment is around 25 days, it can be used as an efficiency indicator of wastewater treatment plant for the removal of hydrophobic emerging contaminants. In this study, the performance of submerged membrane bioreactor was monitored to understand the effect of DEHP on the growth of aerobic microorganisms. The data showed that the chemical oxygen demand(COD)and ammonia concentration were detected below 10 and 1.0 mg/L, respectively for operating conditions of hydraulic retention time(HRT) = 4 and 6 hr, sludge retention time(SRT) = 140 day and sludge concentration between 11.5 and 15.8 g volatile solid(VS)/L. The removal efficiency of DEHP under these conditions was higher and ranged between 91% and 98%. Results also showed that the removal efficiency of DEHP in biological treatment depended on the concentration of sludge, as adsorption is the main mechanism of its removal. For the submerged membrane bioreactor, the pore size is the pivotal factor for DEHP removal, since it determines the amount of soluble microbial products coming out of the process. Highly assimilated microorganisms increase the biodegradation rate, as 74% of inlet DEHP was biodegraded; however, the concentration of DEHP inside sludge was beyond the discharge limit. Understanding the fate of DEHP in membrane bioreactor,which is one of the most promising and futuristic treatment process could provide replacement for conventional processes to satisfy the future stricter regulations on emerging contaminants. | Mehdi Zolfaghari Patrick Drogui Brahima Seyhi Satinder Kaur Brar Gerardo Buelna Rino Dubé Nouha Klai | 2015 | Journal of Environmental Sciences2015，27，11： | 2 |
| 2 | Removal of arsenic from drinking water: A comparative study between electrocoagulation-microfiltration and chemical coagulation-microfiltration processes显示文摘 | Cesar Calderon Mólgora Alejandra Martín Domínguez Eloy Mundo Avila Patrick Drogui Gerardo Buelna | 2013 | Separation and Purification Technology2013，，： | 1 |
| 3 | ORIGINAL ARTICLE Dynamics of bacterial community at varying sludge retention time within membrane bioreactor treating synthetic hospital wastewater显示文摘The study was conducted to investigate the effect of sludge retention on bacterial community composition of membrane bioreactor(MBR)treating synthetic hospital wastewater.The removal of four pharmaceuticals,namely carbamazepine,estradiol,venlafaxine,and ibuprofen in MBR,was studied at varying sludge retention time(SRT)duration of 100,45,and 15 days and hydraulic retention time(HRT)of 18 h.The removal of ibuprofen and estradiol was constant at varying SRT;however,a negligible removal of carbamazepine and low removal of venlafaxine was observed(<20%).The study suggested that the SRT of 45 days in MBR could provide maximum treatment efficiency via decreasing membrane clogging.The effect of sludge age and pharmaceutical presence on the bacterial community was investigated via high-throughput sequencing.The study reveals that the variation in SRT affects the dynamics of the bacterial community significantly.For instance,the dominant bacterium Caldimonas of SRT 100 was disappeared at lower SRTs.Moreover,the profile of the dominant genus of the SRTs varied greatly from each other. | Bhagyashree Tiwari Balasubramanian Sellamuthu Sarah Piche-Choquette Patrick Drogui Rajeshwar Dayal Tyagi Marc Antoine Vaudreuil Sebastien Sauve Gerardo Buelna Rino Dube | 2021 | Systems Microbiology and Biomanufacturing2021，1，4： | 0 |
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