keyword
MENU ▼
Read by QxMD icon Read
search

Start-up

keyword
https://www.readbyqxmd.com/read/28535492/impact-of-substrate-concentration-on-anammox-ubf-reactors-start-up
#1
Yujie Qin, Bin Han, Yan Cao, Tongyu Wang
Two up-flow blanket filter (UBF) reactors were employed to treat synthetic wastewater with different substrate concentrations and nitrogen load rates (NLR) for 178days. During days 0-60, higher influent NLR of R2 (0.21-0.58kg·m(3)·d) slowed down the formation of anammox sludge compared with the lower NLR of R1 (0.18-0.31kg·m(3)·d). Difference in sludge color and nitrogen conversion rate indicated greater anammox activity of R2 than R1. During days 61-178, R1 and R2 achieved the maximum nitrogen removal rates (NRR) of 1...
May 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28531859/the-role-of-conductive-materials-in-the-start-up-period-of-thermophilic-anaerobic-system
#2
Wangwang Yan, Nan Shen, Yeyuan Xiao, Yun Chen, Faqian Sun, Vinay Kumar Tyagi, Yan Zhou
The major obstacle for thermophilic anaerobic digestion (TAD) is the inhibited microorganism activity and process instability during the start-up period. This study proposed a strategy to accelerate and stabilize the thermophilic reactors start-up via adding conductive materials. The results show that methane production rate in conductive materials supplemented (CMS) reactors was almost two times higher than the control reactors. Caloramator sp., a candidate of electroactive bacteria, was significantly enriched in the carbon nano-tube (CNT) supplemented groups (12...
May 10, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28529821/fabrication-of-silicon-films-from-patterned-protruded-seeds
#3
Huang Zeng, Wei Zhang, Jizhou Li, Cong Wang, Hui Yang, Yigang Chen, Xiaoyuan Chen, Dongfang Liu
Thin, flexible silicon crystals are starting up applications such as light-weighted flexible solar cells, SOI, flexible IC chips, 3D ICs imagers and 3D CMOS imagers on the demand of high performance with low cost. Kerfless wafering technology by direct conversion of source gases into mono-crystalline wafers on reusable substrates is highly cost-effective and feedstock-effective route to cheap wafers with the thickness down to several microns. Here we show a prototype for direct conversion of silicon source gases to wafers by using the substrate with protruded seeds...
May 2017: AIP Advances
https://www.readbyqxmd.com/read/28521227/start-up-and-operation-of-an-aerobic-granular-sludge-system-under-low-working-temperature-inoculated-with-cold-adapted-activated-sludge-from-finland
#4
Alejandro Gonzalez-Martinez, Barbara Muñoz-Palazon, Alejandro Rodriguez-Sanchez, Paula Maza-Márquez, Anna Mikola, Jesus Gonzalez-Lopez, Riku Vahala
An aerobic granular sludge system has been started-up and operated at 7°C temperature using cold-adapted activated sludge as inoculum. The system could form granular biomass due to batch operation allowing for just 5-3min of biomass sedimentation. Scanning electron microscopy showed that fungi helped in the granular biomass formation in the early stages of the granule formation. The removal performance of the system was of 92-95% in BOD5, 75-80% in COD, 70-76% in total nitrogen and 50-60% in total phosphorous...
May 10, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28521159/distribution-and-genetic-diversity-of-microbial-populations-in-the-pilot-scale-biofilter-for-simultaneous-removal-of-ammonia-iron-and-manganese-from-real-groundwater
#5
Qingfeng Cheng, Lichao Nengzi, Linlin Bao, Yang Huang, Shengyu Liu, Xiuwen Cheng, Bo Li, Jie Zhang
A pilot-scale biofilter treating real groundwater was developed in this study, which showed that ammonia, iron and manganese were mainly removed at 0.4, 0.4 and 0.8 m of the filter bed, respectively, and the corresponding removal efficiencies were 90.82%, 95.48% and 95.90% in steady phase, respectively. The variation of microbial populations in the biofilter during start-up process was also investigated using high-throughput pyrosequencing (HTP). Results indicated that the main functional microbes for ammonia, iron and manganese removal were Nitrosomonas, Crenothrix and Crenothrix, respectively, which was mainly distributed at 0...
May 13, 2017: Chemosphere
https://www.readbyqxmd.com/read/28513101/industrialization-of-a-perfusion-bioreactor-prime-example-of-a-non-straightforward-process
#6
G Talò, C Turrisi, C Arrigoni, C Recordati, I Gerges, M Tamplenizza, A Cappelluti, S A Riboldi, M Moretti
Bioreactors are essential enabling technologies for the translation of Advanced Therapies Medicinal Products (ATMPs) from the research field towards a successful clinical application. In order to speed up the translation and the spreading of novel Tissue Engineering (TE) products into the clinical routine, TE bioreactors should evolve from laboratory prototypes towards industrialized products. In this work, we thus challenged the industrialization process of a novel technological platform, based on an established research prototype of perfusion bioreactor, following a GMP-driven approach...
May 16, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28512560/the-start-up-of-the-first-hematopoietic-stem-cell-transplantation-center-in-the-iraqi-kurdistan-a-capacity-building-cooperative-project-by-the-hiwa-cancer-hospital-sulaymaniyah-and-the-italian-agency-for-development-cooperation-an-innovative-approach
#7
Ignazio Majolino, Dosti Othman, Attilio Rovelli, Dastan Hassan, Luqman Rasool, Michele Vacca, Nigar Abdalrahman, Chra Abdullah, Zhalla Ahmed, Dlir Ali, Kosar Ali, Chiara Broggi, Cinzia Calabretta, Marta Canesi, Gloria Ciabatti, Claudia Del Fante, Elisabetta De Sapio, Giovanna Dore, Andrea Frigato, Marcela Gabriel, Francesco Ipsevich, Harem Kareem, Dana Karim, Rosa Leone, Tavan Mahmood, Annunziata Manna, Maria Speranza Massei, Andrea Mastria, Dereen Mohammed, Rebar Mohammed, Khoshnaw Najmaddin, Diana Noori, Angelo Ostuni, Angelo Palmas, Marco Possenti, Ali Qadir, Giorgio Real, Rebwar Shrif, Caterina Valdatta, Stefania Vasta, Marta Verna, Mariangela Vittori, Awder Yousif, Francesco Zallio, Alessandro Calisti, Sergio Quattrocchi, Corrado Girmenia
We describe the entire process leading to the start-up of a hematopoietic stem cell transplantation center at the Hiwa Cancer Hospital, in the city of Sulaymaniyah, Kurdistan Iraqi Region. This capacity building project was funded by the Italian Development Cooperation Agency and implemented with the support of the volunteer work of Italian professionals, either physicians, nurses, biologists and technicians. The intervention started in April 2016, was based exclusively on training and coaching on site, that represent a significant innovative approach, and led to a first autologous transplant in June 2016 and to the first allogeneic transplant in October...
2017: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/28507540/microbial-population-dynamics-and-ecosystem-functions-of-anoxic-aerobic-granular-sludge-in-sequencing-batch-reactors-operated-at-different-organic-loading-rates
#8
Enikö Szabó, Raquel Liébana, Malte Hermansson, Oskar Modin, Frank Persson, Britt-Marie Wilén
The granular sludge process is an effective, low-footprint alternative to conventional activated sludge wastewater treatment. The architecture of the microbial granules allows the co-existence of different functional groups, e.g., nitrifying and denitrifying communities, which permits compact reactor design. However, little is known about the factors influencing community assembly in granular sludge, such as the effects of reactor operation strategies and influent wastewater composition. Here, we analyze the development of the microbiomes in parallel laboratory-scale anoxic/aerobic granular sludge reactors operated at low (0...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28495116/israel-a-start-up-life-science-nation
#9
Rafael Beyar, Benny Zeevi, Gideon Rechavi
No abstract text is available yet for this article.
May 5, 2017: Lancet
https://www.readbyqxmd.com/read/28486170/weak-magnetic-field-a-powerful-strategy-to-enhance-partial-nitrification
#10
Zhibin Wang, Xiaolin Liu, Shou-Qing Ni, Jian Zhang, Xu Zhang, Hafiz Adeel Ahmad, Baoyu Gao
Partial nitrification (PN) combined with anaerobic ammonium oxidation process has been recognized as a promising technology for the removal of nitrogenous contaminants from wastewater. This research aimed to investigate the potential of external magnetic field for enhancing the PN process in short and long term laboratory-scale experiments. Different strength magnetic fields (0, 5, 10, 15, 20 and 25 mT) were evaluated in short-term batch tests and 5 mT magnetic field was found to have better ability to increase the activities of aerobic ammonium oxidizing bacteria (AOB) of PN consortium...
April 26, 2017: Water Research
https://www.readbyqxmd.com/read/28475436/efficacy-of-methanogenic-biomass-acclimation-in-mesophilic-anaerobic-digestion-of-ultrasound-pretreated-sludge
#11
M C Gagliano, A Gallipoli, S Rossetti, C M Braguglia
Methanogenic biomass plays a key role with regards methane production during anaerobic bioconversion of organic substrates. In this study, the effect of two different acclimated inocula on digestion performances was investigated by means of anaerobic batch tests on untreated and sonicated waste activated sludge. Organics solubilisation and removal kinetics, the abundance and physiological conditions of archaeal cells on ultimate methane yield were evaluated. The simultaneous presence of Methanosarcina and Methanosaeta in the archaeal biomass, the higher initial archaeal cells relative abundance and their occurrence in the aggregated forms were the main factors positively affecting the conversion into methane...
May 5, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28456214/communication-appearance-of-undershoots-in-start-up-shear-experimental-findings-captured-by-tumbling-snake-dynamics
#12
Pavlos S Stephanou, Thomas Schweizer, Martin Kröger
Our experimental data unambiguously show (i) a damping behavior (the appearance of an undershoot following the overshoot) in the transient shear viscosity of a concentrated polymeric solution, and (ii) the absence of a corresponding behavior in the transient normal stress coefficients. Both trends are shown to be quantitatively captured by the bead-link chain kinetic theory for concentrated polymer solutions and entangled polymer melts proposed by Curtiss and Bird, supplemented by a non-constant link tension coefficient that we relate to the nematic order parameter...
April 28, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28455210/low-temperature-circulating-fluidized-bed-gasification-and-co-gasification-of-municipal-sewage-sludge-part-1-process-performance-and-gas-product-characterization
#13
Tobias Pape Thomsen, Zsuzsa Sárossy, Benny Gøbel, Peder Stoholm, Jesper Ahrenfeldt, Flemming Jappe Frandsen, Ulrik Birk Henriksen
Results from five experimental campaigns with Low Temperature Circulating Fluidized Bed (LT-CFB) gasification of straw and/or municipal sewage sludge (MSS) from three different Danish municipal waste water treatment plants in pilot and demonstration scale are analyzed and compared. The gasification process is characterized with respect to process stability, process performance and gas product characteristics. All experimental campaigns were conducted at maximum temperatures below 750°C, with air equivalence ratios around 0...
April 25, 2017: Waste Management
https://www.readbyqxmd.com/read/28448913/temporal-characterization-of-flowback-and-produced-water-quality-from-a-hydraulically-fractured-oil-and-gas-well
#14
James Rosenblum, Andrew W Nelson, Bridger Ruyle, Michael K Schultz, Joseph N Ryan, Karl G Linden
This study examined water quality, naturally-occurring radioactive materials (NORM), major ions, trace metals, and well flow data for water used and produced from start-up to operation of an oil and gas producing hydraulically-fractured well (horizontal) in the Denver-Julesburg (DJ) Basin in northeastern Colorado. Analysis was conducted on the groundwater used to make the fracturing fluid, the fracturing fluid itself, and nine flowback/produced water samples over 220days of operation. The chemical oxygen demand of the wastewater produced during operation decreased from 8200 to 2500mg/L, while the total dissolved solids (TDS) increased in this same period from 14,200 to roughly 19,000mg/L...
April 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28438081/long-term-operation-of-kickuth-type-constructed-wetland-applied-to-municipal-wastewater-treatment-in-temperate-climate
#15
Zbigniew Mucha, Włodzimierz Wójcik, Krzysztof Jóźwiakowski, Magdalena Gajewska
The purpose of this paper is to discuss the problem of changes of effectiveness of Kickuth-type constructed wetland with subsurface flow applied to domestic wastewater treatment. This study is based on an example of a wetland 3000 m(2) in surface, serving 800 inhabitants, located in Poland. The results of chemical analysis showed that after an initial year of 'start-up time', the efficiency of pollutant removal gradually increased to reach an apex in the 6th year of operation. Such maximum efficiency continued up to the 10th year of operation; afterwards it gradually dropped...
May 12, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28433916/a-novel-method-for-contributing-to-composting-start-up-at-low-temperature-by-inoculating-cold-adapted-microbial-consortium
#16
Xin-Yu Xie, Yue Zhao, Qing-Hong Sun, Xue-Qin Wang, Hong-Yang Cui, Xu Zhang, Yan-Jie Li, Zi-Min Wei
Low temperature climate presented a technical challenge to start-up composting in northern region of China. This study investigated if the cold-adapted microbial consortium (CAMC) could promote composting start-up at low temperature. In this work, the CAMC was inoculated when food waste was composted at 10°C. The results showed that inoculating CAMC accelerated the piles temperature effectively, the piles passed through the start-up period within 37h. Moreover, the inoculants could enhance the abundances of dominant strains related to organic matters degradation rate...
April 11, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28432991/characteristics-of-adapted-hydrogenotrophic-community-during-biomethanation
#17
Lydia Rachbauer, Reinhard Beyer, Günther Bochmann, Werner Fuchs
The results presented in this study were carried out as concomitant experiments during the start-up and operation of a biomethanation unit to evaluate the effect of process parameters on carbon conversion, product formation (methane and acetate) and community composition. For that, two different samples were withdrawn from a trickle-bed reactor with immobilized enrichment culture of hydrogenotrophic methanogens adapted from sewage sludge. One sample was taken from the recirculation liquid during start-up phase while the other was withdrawn directly from the carrier material in the reactor...
October 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28432235/start-up-company-focuses-on-animal-health-and-agricultural-productivity
#18
(no author information available yet)
No abstract text is available yet for this article.
April 22, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28424846/summary-of-the-preservation-techniques-and-the-evolution-of-the-anammox-bacteria-characteristics-during-preservation
#19
REVIEW
Hui Chen, Ren-Cun Jin
The anaerobic ammonium oxidation (anammox) process is a promising wastewater treatment method for biological nitrogen removal. A sufficient amount of active anammox sludge as a seed is crucial to the fast establishment and stability of the anammox process. Anammox bacteria is a kind of microorganism which is sensitive to the environmental conditions, e.g., oxygen, temperature. The optimum temperature and pH for the growth of the anammox bacteria are 30-40 °C and 6.7-8.3. A proper preservation technique allows fast start-up of the anammox process, overcoming the long doubling time of anammox biomass...
April 19, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28420531/high-throughput-determination-of-vancomycin-in-human-plasma-by-a-cost-effective-system-of-two-dimensional-liquid-chromatography
#20
Yanghao Sheng, Boting Zhou
Therapeutic drug monitoring (TDM) is one of the most important services of clinical laboratories. Two main techniques are commonly used: the immunoassay and chromatography method. We have developed a cost-effective system of two-dimensional liquid chromatography with ultraviolet detection (2D-LC-UV) for high-throughput determination of vancomycin in human plasma that combines the automation and low start-up costs of the immunoassay with the high selectivity and sensitivity of the liquid chromatography coupled with mass spectrometric detection without incurring their disadvantages, achieving high cost-effectiveness...
February 27, 2017: Journal of Chromatography. A
keyword
keyword
56178
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"