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https://www.readbyqxmd.com/read/29149747/analysis-of-effect-of-particles-on-cake-layer-compressibility-during-ultrafiltration-of-upflow-biological-activated-carbon-effluent
#1
Lu Ao, Wenjun Liu, Minglu Zhang, Xiaomao Wang
Three different hollow-fibre ultrafiltration (UF) membranes were applied to treat upflow biological activated carbon (UBAC) effluent to determine the characteristics of membrane biofouling by microorganisms and particles. At the beginning of filtration, the cake layer formed on the membrane was loose and highly compressible, and the trans-membrane pressure (TMP) rapidly increased. When compressed to a certain extent, cake layer with low compressibility was formed by the accumulated particles and resulted in slower TMP increment...
November 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29149739/removal-of-tio2-nanoparticles-from-water-by-low-pressure-pilot-plant-filtration
#2
Josune Olabarrieta, Oihane Monzón, Yolanda Belaustegui, Jon-Iñaki Alvarez, Saioa Zorita
Rising use of nanoparticles in manufacturing as well as in commercial products bring issues related to environmental release and human exposure. A large amount of TiO2 nanoparticles will eventually reach wastewater treatment plants. Low pressure membrane filtration has been suggested as a feasible treatment of water streams. This study investigated first at laboratory scale the influence of: i) membrane material, ii) pore size and iii) water chemistry on nTiO2 removal. TiO2 retention was governed by the cake layer formation mechanism and significant retention of nanoparticles was observed even for filters having considerably larger pores than nTiO2...
November 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29149673/the-feasibility-of-nanofiltration-membrane-bioreactor-nf-mbr-reverse-osmosis-ro-process-for-water-reclamation-comparison-with-ultrafiltration-membrane-bioreactor-uf-mbr-ro-process
#3
Ming Feng Tay, Chang Liu, Emile R Cornelissen, Bing Wu, Tzyy Haur Chong
This study examines the feasibility of a novel nanofiltration membrane bioreactor (NF-MBR) followed by reverse osmosis (RO) process for water reclamation at 90% recovery and using an ultrafiltration MBR (UF-MBR)+RO as baseline for comparison. Both MBRs adopted the same external hollow fiber membrane configurations and operating conditions. The collected permeates of the MBRs were subsequently fed to the respective RO systems. The results showed that the NF-MBR (operated at a constant flux of 10 L/m(2)h) achieved superior MBR permeate quality due to enhanced biodegradation and high rejection capacity of the NF membrane, leading to lower RO fouling rates (∼3...
November 7, 2017: Water Research
https://www.readbyqxmd.com/read/29146351/impact-of-rapeseed-press-cake-on-maillard-reaction-in-a-cookie-model-system
#4
Antonio Dario Troise, Jonathan Desmond Wilkin, Alberto Fiore
Rapeseed press-cake (RPC) is a byproduct of rapeseed oil production, rich in proteins and fiber. The aim of this study was to investigate the impact of cold pressed RPC, RPC fiber isolate and RPC alkaline extract on the formation of acrylamide and 5-hydroxymethylfufural (HMF) in cookies. Both compounds were influenced by the ingredients: the addition of RPC led to a significant dose-dependent increase of HMF in the cookies and to an increase of acrylamide up to 66.9%. On the contrary, acrylamide concentration was reduced down to 39...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29146324/antioxidative-potentially-anti-inflammatory-and-antidiabetic-properties-as-well-as-oxidative-stability-and-acceptability-of-cakes-supplemented-with-elicited-basil
#5
Urszula Złotek
The aim of the study was to investigate the effect of addition of basil elicited with jasmonic acid (JA) on the biological properties, oxidative stability, and sensory quality of cakes. Simulated gastrointestinal digestion was used for determination of bioavailability. The antioxidant, anti-inflammatory and antidiabetic potential of fortified cakes were significantly higher than those of the control cakes. The antioxidant activity of the tested cakes was increased after addition of basil, proportionally to the amount of the additive...
March 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29144308/numerical-simulation-of-filtration-performance-in-submerged-membrane-bioreactors-effect-of-particle-packed-structure
#6
Zhidong Wang, Kuizu Su, Tong Shu, Weihong Wang
It is widely known that the accumulation of solid matter forming a cake layer on the membrane surface is one of the major limitations of the filtration performance in submerged membrane bioreactors (SMBR). This study is focused on the influence of the cake porosity of different particle microscopic packed structures on the filtration performance of hollow fiber systems. An integrated model based on the finite element method to simulate numerically the flow in an SMBR is presented. The model coupled the Navier-Stokes and Darcy Brinkman equations to simulate a complete filtration run...
November 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29138906/influence-of-polyaluminum-chloride-on-microbial-characteristics-in-anaerobic-membrane-bioreactors-for-sludge-digestion
#7
Wanlin Zheng, Zhiyong Yu, Yu Xia, Xianghua Wen
In this study, two parallel lab-scale anaerobic membrane bioreactors (AnMBRs), one of which was dosed with polyaluminum chloride (PAC) for membrane fouling control, were operated for treating excess activated sludge collected from a wastewater treatment plant (WWTP). The AnMBRs were inoculated with anaerobic digested sludge collected from an anaerobic digester of another WWTP. The microbial community of digested sludge and cake layer in AnMBRs, as well as that of excess sludge, was analyzed through polymerase chain reaction coupled with denaturing gradient gel electrophoresis (PCR-DGGE) and Illumina MiSeq...
November 14, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29135028/effects-of-hydrolyzed-rapeseed-cake-extract-on-the-quality-characteristics-of-mayonnaise-dressing
#8
Ye-Seul Kim, Jeung-Hee Lee
Combined fractions (H2 O and 30% and 50% ethanol) of crude rapeseed cake extracts with 80% ethanol were hydrolyzed with NaOH solution. The hydrolyzed extract showed significantly higher contents of total phenolics (41.8 mg SAE/g) and sinapic acid (425.8 mg/g), as well as higher 1,1-diphenyl-2-picryl-hydrazyl radical-scavenging capacity (91.98 RSC%) than the crude extract (P < 0.05). Antimicrobial activity of the hydrolyzed extract was remarkably higher than that of the crude extract against selected Gram-positive and Gram-negative bacteria as well as yeast, as determined by the minimum inhibitory concentration method...
November 14, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/29133924/bio-detoxification-of-ricin-in-castor-bean-ricinus-communis-l-seeds
#9
Natália L Sousa, Glaucia B Cabral, Pabline M Vieira, Aisy B Baldoni, Francisco J L Aragão
Ricin is a highly toxic ribosome-inactivating lectin occurring in the seeds of castor bean (Ricinus communis L.). Castor bean grows throughout tropical and sub-tropical regions and is a very important crop due to its high seed content of ricinoleic acid, an unusual fatty acid, which has several industrial applications. However, due to the presence of the toxin, castor bean can cause death after the exposure of animals to low doses of ricin through skin contact, injection, inhalation or oral routes. Aiming to generate a detoxified genotype, we explored the RNAi concept in order to silence the ricin coding genes in the endosperm of castor bean seeds...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29132123/a-comparative-study-of-electro-dewatering-process-performance-for-activated-and-digested-wastewater-sludge
#10
Akrama Mahmoud, Andrew F A Hoadley, Morgane Citeau, Jean Michel Sorbet, Gelade Olivier, Jean Vaxelaire, Jérémy Olivier
Electro-dewatering (EDW) is an alternative emerging and energy-efficient technology that provides improved liquid/solids separations in the dewatering of wastewater sludge. The EDW technology is not only an innovative dewatering method for significantly reducing the volume of wastewater sludge before re-utilization or disposal, but is also a promising emerging method which may potentially be used for decontamination purposes. In this study, the influence of the sludge properties (e.g. electrical conductivity, zeta potential, specific cake resistance, among others) on their mechanical and electrical behaviour in terms of dewaterability and electro-dewaterability, the applied current (current density from 20 to 80 A/m(2)), and filter cloth position relative to the electrode was investigated...
November 10, 2017: Water Research
https://www.readbyqxmd.com/read/29124646/metal-availability-soil-nutrient-and-enzyme-activity-in-response-to-application-of-organic-amendments-in-cd-contaminated-soil
#11
Zhanbiao Yang, Lixia Liu, Yanfeng Lv, Zhang Cheng, Xiaoxun Xu, Junren Xian, Xuemei Zhu, Yuanxiang Yang
The study investigated the effects of organic amendments: green tea amendment (GTA) and oil cake amendment (OCA) on Cd bioavailability, soil nutrients, and soil enzyme activity in Cd-contaminated soil. The amendments were added to the soil at the doses of 1, 3, and 5% and were incubated for 45 days. Then, pakchoi cabbage was planted to test the remediation effect of the above two organic amendments. The diethylenetriaminepentaacetic acid (DTPA)-extractable Cd in GTA and OCA treatments was reduced by 14.69-27...
November 10, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29108531/eating-occasions-and-the-contribution-of-foods-to-sodium-and-potassium-intakes-in-adults
#12
Kacie M Dickinson, Lily Chan, Carly J Moores, Jacqueline Miller, Jolene Thomas, Alison Yaxley, Kathryn Jackson, Kaye Mehta, Louisa Matwiejczyk, Amanda Wray, Michelle Miller
OBJECTIVE: To examine dietary Na and K intake at eating occasions in Australian adults and identify the contribution of major food sources to Na and K at different eating occasions. DESIGN: Secondary analysis of 24 h recall diet data from the Australian Health Survey (2011-2013). SETTING: Nationally representative survey in Australia. SUBJECTS: Male and female Australians aged 18-84 years (n 7818). RESULTS: Dinner contributed the greatest proportion to total daily Na intake (33 %) and K intake (35 %)...
November 7, 2017: Public Health Nutrition
https://www.readbyqxmd.com/read/29100528/silica-nanoparticles-inhibit-the-cation-channel-trpv4-in-airway-epithelial-cells
#13
Alicia Sanchez, Julio L Alvarez, Kateryna Demydenko, Carole Jung, Yeranddy A Alpizar, Julio Alvarez-Collazo, Stevan M Cokic, Miguel A Valverde, Peter H Hoet, Karel Talavera
BACKGROUND: Silica nanoparticles (SiNPs) have numerous beneficial properties and are extensively used in cosmetics and food industries as anti-caking, densifying and hydrophobic agents. However, the increasing exposure levels experienced by the general population and the ability of SiNPs to penetrate cells and tissues have raised concerns about possible toxic effects of this material. Although SiNPs are known to affect the function of the airway epithelium, the molecular targets of these particles remain largely unknown...
November 3, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/29100049/pip-ing-lipids-on-membranes-pten-takes-the-cake
#14
Archna Ravi, Brooke M Emerling
In this issue of Molecular Cell, Malek et al. (2017) describe a novel HPLC-MS method permitting separation of PI(3,4)P2 and PI(4,5)P2, a technical issue hindering the phosphoinositide signaling field. They use this method to uncover a new target and critical role for PTEN in cancer.
November 2, 2017: Molecular Cell
https://www.readbyqxmd.com/read/29098869/a-step-forward-towards-the-development-of-stable-freeze-dried-liposomes-a-quality-by-design-approach-qbd
#15
Bianca Sylvester, Alina Porfire, Marcela Achim, Lucia Rus, Ioan Tomuţă
This study highlights the advantages of using a Quality by Design (QbD) approach in order to gain a more comprehensive understanding of the freeze-drying process of pravastatin-loaded long-circulating liposomes (LCL-PRAV). Within the QbD paradigm, the present study aimed to establish the design space for the optimization of freeze-dried LCL-PRAV by means of Design of Experiment (DOE). The encapsulated solute retention (ESR), the average particle size and zeta potential after freeze-drying, the residual moisture content, the macroscopic cake appearance, the glass trasition temperature (Tg) of the freeze-dried cake and the primary drying time were defined as critical quality attributes (CQAs) for the freeze-dried final product...
November 3, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/29098607/measurement-versus-prediction-in-the-construction-of-patient-reported-outcome-questionnaires-can-we-have-our-cake-and-eat-it
#16
Niels Smits, L Andries van der Ark, Judith M Conijn
BACKGROUND: Two important goals when using questionnaires are (a) measurement: the questionnaire is constructed to assign numerical values that accurately represent the test taker's attribute, and (b) prediction: the questionnaire is constructed to give an accurate forecast of an external criterion. Construction methods aimed at measurement prescribe that items should be reliable. In practice, this leads to questionnaires with high inter-item correlations. By contrast, construction methods aimed at prediction typically prescribe that items have a high correlation with the criterion and low inter-item correlations...
November 2, 2017: Quality of Life Research
https://www.readbyqxmd.com/read/29098536/performance-and-meat-quality-characteristics-of-broilers-fed-fermented-mixture-of-grated-cassava-roots-and-palm-kernel-cake-as-replacement-for-maize
#17
A K Chukwukaelo, N O Aladi, N J Okeudo, H O Obikaonu, I P Ogbuewu, I C Okoli
Performance and meat quality characteristics of broilers fed fermented mixture of grated cassava roots and palm kernel cake (FCP-mix) as a replacement for maize were studied. One hundred and eighty (180), 7-day-old broiler chickens were divided into six groups of 30 birds, and each group replicated thrice. Six experimental diets were formulated for both starter and finisher stages with diets 1 and 6 as controls. Diet 1 contained maize whereas diet 6 contained a 1:1 mixture of cassava root meal (CRM) and palm kernel cake (PKC)...
November 2, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29096302/experimental-evaluation-of-main-emissions-during-coal-processing-waste-combustion
#18
Margarita A Dmitrienko, Jean C Legros, Pavel A Strizhak
The total volume of the coal processing wastes (filter cakes) produced by Russia, China, and India is as high as dozens of millions of tons per year. The concentrations of CO and CO2 in the emissions from the combustion of filter cakes have been measured directly for the first time. They are the biggest volume of coal processing wastes. There have been many discussions about using these wastes as primary or secondary components of coal-water slurries (CWS) and coal-water slurries containing petrochemicals (CWSP)...
October 27, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29093354/epidemiology-of-out-of-hospital-cardiac-arrest-due-to-suffocation-focusing-on-suffocation-due-to-japanese-rice-cake-a-population-based-observational-study-from-the-utstein-osaka-project
#19
Kosuke Kiyohara, Tomohiko Sakai, Chika Nishiyama, Tatsuya Nishiuchi, Yasuyuki Hayashi, Taku Iwami, Tetsuhisa Kitamura
BACKGROUND: Japanese rice cake ("mochi") is a major cause of food-choking accidents in Japan. However, the epidemiology of out-of-hospital cardiac arrests (OHCAs) due to suffocation caused by rice cakes is poorly understood. METHODS: OHCA data from 2005 to 2012 were obtained from the population-based OHCA registry in Osaka Prefecture. Patients aged ≥20 years who experienced OHCA caused by suffocation that occurred before the arrival of emergency-medical-service (EMS) personnel were included...
October 28, 2017: Journal of Epidemiology
https://www.readbyqxmd.com/read/29089855/solid-state-fermentation-reduces-phytic-acid-level-improves-the-profile-of-myo-inositol-phosphates-and-enhances-the-availability-of-selected-minerals-in-flaxseed-oil-cake
#20
Robert Duliński, Bożena Stodolak, Łukasz Byczyński, Aleksander Poreda, Anna Starzyńska-Janiszewska, Krzysztof Żyła
Flaxseed oil cake was subjected to fermentation with Rhizopus oligosporus (DSM 1964 and ATCC 64063), and the phytate (InsP6) content, myo-inositol phosphate profile and in vitro bioavailability of essential minerals were studied. Flaxseed oil cake had a phytate mass fraction of 13.9 mg/g. A 96-hour fermentation of flaxseed oil cake by R. oligosporus DSM 1964 and R. oligosporus ATCC 64063 decreased the InsP6 content by 48 and 33%, respectively. The strains had different phytate-degrading activities: fermentation of flaxseed oil cake with R...
September 2017: Food Technology and Biotechnology
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