PubAg

Main content area

You searched for: Subject "filtration" Remove constraint Subject: "filtration"
Start Over

Search

9,200  Search Results

« Previous | 1 - 20 of 9,200 |
Number of results to display per page

Search Results

1. CFD-DEM study of bridging mechanisms at the static solid-liquid surface filtration

Author:
Hund, David; Lösch, Philipp; Kerner, Maximilian; Ripperger, Siegfried; Antonyuk, Sergiy
Source:
Powder technology 2020 v.361 pp. 600-609
ISSN:
0032-5910
Subject:
filtration,   etc   ; models; particle size;     Show all 3 Subjects
Abstract:
... In static surface filtration processes with filter media which pores are bigger than the particle size, the formation of bridges from particles over the pores is of crucial importance for the creation of the first particle layer and interference resistance of the filter. To achieve a better understanding of the bridging mechanisms, a numerical study of the particle deposition with a three-dimensio ...
DOI:
10.1016/j.powtec.2019.11.072

2. Monoclonal antibody purification and its progression to commercial scale

Author:
Chahar, Digamber Singh; Ravindran, Selvan; Pisal, S.S.
Source:
Biologicals 2020 v.63 pp. 1-13
ISSN:
1045-1056
Subject:
filtration,   etc   ; manufacturing; markets; monoclonal antibodies;     Show all 4 Subjects
Abstract:
... With the advancements in upstream technologies, the capacity for monoclonal antibody (mAb) production has transformed from a few milligrams to grams per liter. These titers lead to enormous pressure on downstream processes (DSPs), which need to be reworked to achieve higher efficiency and better utilization of available resources. Various parameters, such as column sizing, aggregate removal, filtr ...
DOI:
10.1016/j.biologicals.2019.09.007

3. Effect of wand-type underdrains on the hydraulic performance of pressurised sand media filters

Author:
Pujol, Toni; Puig-Bargués, Jaume; Arbat, Gerard; Duran-Ros, Miquel; Solé-Torres, Carles; Pujol, Joan; Ramírez de Cartagena, Francisco
Source:
Biosystems engineering 2020 v.192 pp. 176-187
ISSN:
1537-5110
Subject:
filtration,   etc   ; filters; fluid mechanics; microirrigation; models; sand;     Show all 6 Subjects
Abstract:
... Sand media filtration is frequently used in drip irrigation systems. Commercial filter designs may use different underdrain models but wand-type designs provide a large ratio of horizontal area covered by underdrains and are expected to provide a uniform flow of water through the medium. The complexity of these designs makes it difficult to analyse the effects of changing the position of wand and ...
DOI:
10.1016/j.biosystemseng.2020.01.015

4. Superior crack initiation and growth characteristics of cellulose nanopapers

Author:
Miao, Chengyun; Du, Haishun; Parit, Mahesh; Jiang, Zhihua; Tippur, Hareesh V.; Zhang, Xinyu; Liu, Zhongqi; Li, Junhao; Wang, Ruigang
Source:
Cellulose 2020 v.27 no.6 pp. 3181-3195
ISSN:
0969-0239
Subject:
filtration,   etc   ; cellulose; digital images; energy; tensile strength;     Show all 5 Subjects
Abstract:
... In this work, tension and fracture behaviors of cellulose nanopaper (CNP) made from two different preparation approaches are comparatively studied. The CNP are prepared by casting (or C-CNP) and filtration (or F-CNP) of CNF suspension. The resulting CNP are mechanically characterized using the vision-based full-field optical method of Digital Image Correlation. Tension tests show that F-CNP has a ...
DOI:
10.1007/s10570-020-03015-x

5. Highly efficient transparent air filter prepared by collecting-electrode-free bipolar electrospinning apparatus

Author:
Wang, Xiaoxiong; Xiang, Hongfei; Song, Chao; Zhu, Dongyang; Sui, Jinxia; Liu, Qi; Long, Yunze
Source:
Journal of hazardous materials 2020 v.385 pp. 121535
ISSN:
0304-3894
Subject:
filtration,   etc   ; air filters; electrodes; nanofibers; neutralization;     Show all 5 Subjects
Abstract:
... Electrospinning technology has been used for a long time. A jet from a needle was formed by applying high voltage, and then the nanofibers are deposited onto a collecting electrode (usually metal) and the excess charge is conducted away to complete the electrospinning. Alternatively, it is also possible to prevent charge accumulation from hindering the progress of electrospinning by means of charg ...
DOI:
10.1016/j.jhazmat.2019.121535

6. Zeolitic Imidazolate Framework-8/Polypropylene–Polycarbonate Barklike Meltblown Fibrous Membranes by a Facile in Situ Growth Method for Efficient PM₂.₅ Capture

Author:
Li, Ting-Ting; Cen, Xixi; Ren, Hai-Tao; Wu, Liwei; Peng, Hao-Kai; Wang, Wei; Gao, Bo; Lou, Ching-Wen; Lin, Jia-Horng
Source:
ACS applied materials & interfaces 2020 v.12 no.7 pp. 8730-8739
ISSN:
1944-8252
Subject:
filtration,   etc   ; air filters; air pollution; particulates;     Show all 4 Subjects
Abstract:
... Environmental pollution, especially air pollution, seriously endangers public health globally. Due to severe air pollution, air filters still face many challenges, especially in terms of filtration performance and filtration stability. Herein, a zeolitic imidazolate framework-8/polypropylene–polycarbonate barklike meltblown fibrous membrane (PPC/ZIF-8) was designed through meltblown and an in situ ...
DOI:
10.1021/acsami.9b21340

7. Performance trends in wall-flow diesel particulate filters: Comparative analysis of their filtration efficiency and pressure drop

Author:
Orihuela, M. Pilar; Chacartegui, Ricardo; Gómez-Martín, Aurora; Ramírez-Rico, Joaquín; Becerra Villanueva, José A.
Source:
Journal of cleaner production 2020 v.260 pp. 120863
ISSN:
0959-6526
Subject:
filtration,   etc   ; filters; gasoline; particulate emissions; pollution; public health; soot;     Show all 7 Subjects
Abstract:
... Soot and particulate emissions from the transport sector are a major concern worldwide, given their harmful effects on public health and the environment. On-road vehicles are the main contributing source to this kind of pollution. They are strictly regulated in many countries, with limitations on the number and concentration of released particles, and they must be equipped with particle abatement ...
DOI:
10.1016/j.jclepro.2020.120863

8. Foam stability in filtered lubricants containing antifoams

Author:
Chandran Suja, V.; Kar, A.; Cates, W.; Remmert, S.M.; Fuller, G.G.
Source:
Journal of colloid and interface science 2020 v.567 pp. 1-9
ISSN:
0021-9797
Subject:
filtration,   etc   ; additives; bubbles; foaming; foams; lubricants; particulates; porosity; probabilistic models;     Show all 9 Subjects
Abstract:
... Lubricant formulations are filtered to remove deleterious particulate matter. An unintended consequence of this important process is the detrimental effect of fine filtration on the foaming performance of lubricants with antifoam additives. Here we outline a method to study this phenomenon in detail by probing the coalescence stability of single bubbles in filtered antifoam laden lubricants. Initi ...
DOI:
10.1016/j.jcis.2020.01.103

9. Nacre-like nanocomposite film with excellent dielectric insulation properties and mechanical strength based on montmorillonite nanosheet and aramid nanofiber

Author:
Si, Lianmeng; Lu, Zhaoqing; Yao, Cheng; Ma, Qin; Zhao, Yongsheng; Wang, Yafang; Wang, Danni; Jin, Zhanfan
Source:
Journal of materials science 2020 v.55 no.14 pp. 5948-5960
ISSN:
0022-2461
Subject:
filtration,   etc   ; electronics; insulating materials; montmorillonite; nanocomposites; nanofibers; nanosheets; tensile strength;     Show all 8 Subjects
Abstract:
... Unlike the mechanisms behind their enhanced mechanical properties, application of artificial nacre-like materials has attracted very little attention from scholars. In this study, we designed a unique artificial nacre-like material that integrated outstanding mechanical properties and dielectric insulation properties by assembling MTM nanosheet and aramid nanofiber (ANF) through vacuum-assisted fi ...
DOI:
10.1007/s10853-020-04412-0

10. Operational and fouling characteristics of the combined oxidation ditch—membrane bioreactor under a continuous-flow mode

Author:
Liu, Wei; Bin, Liying; Tang, Bing; Li, Ping; Huang, Shaosong; Fu, Fenglian; Huang, Zhaole; Guan, Guoqing
Source:
Biochemical engineering journal 2020 v.157 pp. 107535
ISSN:
1369-703X
Subject:
filtration,   etc   ; bioreactors; cleaning; fouling; microbial communities; oxidation; temperature;     Show all 7 Subjects
Abstract:
... This work investigated the operational and fouling characteristics of the combined oxidation ditch-membrane bioreactor under a continuous-flow mode. During the operating period (80 days), foulants gradually accumulated on the membrane surface and caused increasing in the filtration resistance, whose appearance showed obvious heterogeneity along with the variation of some influencing factors. Corre ...
DOI:
10.1016/j.bej.2020.107535

11. Household slow sand filters with and without water level control: continuous and intermittent flow efficiencies

Author:
Maciel, Paulo Marcos Faria; Sabogal-Paz, Lyda Patricia
Source:
Environmental technology 2020 v.41 no.8 pp. 944-958
ISSN:
1479-487X
Subject:
filtration,   etc   ; Escherichia coli; kaolinite; poly(vinyl chloride); sand filters; turbidity;     Show all 6 Subjects
Abstract:
... Four household slow sand filters were made out of PVC and operated in continuous and intermittent flows, with and without using a float to control the maximum level of water inside the units. The efficiency was evaluated as a function of Escherichia coli reduction and turbidity in water from the study prepared with kaolinite and E. coli suspension. The correlation of the efficiencies with the foll ...
DOI:
10.1080/09593330.2018.1515988

12. A green and practical reduction of N-(4-chlorophenyl)-2-nitroaniline and its derivatives to corresponding N-substituted-benzene-1,2-diamines using thiourea dioxide

Author:
Zhong, Cong-Shan; Cui, Jian-Lan; Yu, Si-Yuan; Wang, Xiao; Wang, Ning
Source:
Tetrahedron letters 2020 v.61 no.11 pp. 151599
ISSN:
0040-4039
Subject:
filtration,   etc   ; chemical reactions; chemical structure; sodium hydroxide; thiourea; urea;     Show all 6 Subjects
Abstract:
... A new effective approach for synthesizing diverse N-substituted-benzene-1,2-diamines is reported. The treatment of N-substituted-2-nitroanilines with thiourea dioxide in the presence of sodium hydroxide efficiently formed the corresponding N-substituted-benzene-1,2-diamines, including N-(4-chlorophenyl)benzene-1,2-diamine with a good yield of 94%. The by-product is environmentally-friendly urea an ...
DOI:
10.1016/j.tetlet.2020.151599

13. Promoting the granulation process of aerobic granular sludge in an integrated moving bed biofilm-membrane bioreactor under a continuous-flowing mode

Author:
Dai, Chencheng; Bin, Liying; Tang, Bing; Li, Ping; Huang, Shaosong; Fu, Fenglian; Yin, Qian
Source:
The Science of the total environment 2020 v.703 pp. 135482
ISSN:
0048-9697
Subject:
filtration,   etc   ; biodegradation; biodiversity; biofilm; biomass; membrane bioreactors; polymers; sludge;     Show all 8 Subjects
Abstract:
... This investigation demonstrated that aerobic granular sludge (AGS) could be cultivated rapidly in a single continuous-flowing membrane bioreactor (MBR) by introducing freely moved bio-carriers with a filling ratio of 10%. By operating the bioreactor for 28 days, AGS was successfully cultivated and kept stable for >2 months with a compact structure and clear shape, in which, extracellular polymeric ...
DOI:
10.1016/j.scitotenv.2019.135482

14. Ultrahigh Performance of n-Type Ag₂Se Films for Flexible Thermoelectric Power Generators

Author:
Jiang, Cong; Ding, Yufei; Cai, Kefeng; Tong, Liang; Lu, Yao; Zhao, Wenyu; Wei, Ping
Source:
ACS applied materials & interfaces 2020 v.12 no.8 pp. 9646-9655
ISSN:
1944-8252
Subject:
filtration,   etc   ; ambient temperature; generators (equipment); nanomaterials; nylon; pressing; selenides;     Show all 7 Subjects
Abstract:
... Due to the limited thermoelectric (TE) performance of conducting polymers and rigidity of inorganic materials, it is still a huge challenge to prepare low-cost, highly flexible, and high-performance TE materials. Herein, we fabricated n-type Ag₂Se films using a porous nylon membrane as a flexible substrate by vacuum-assisted filtration, followed by hot pressing. A very high power factor of ∼1882 μ ...
DOI:
10.1021/acsami.9b21069

15. Investigation of filtration properties and microbiological characteristics of sewage sludge after physical conditioning with the use of ground walnut shells

Author:
Wójcik, Marta
Source:
Powder technology 2020 v.361 pp. 491-498
ISSN:
0032-5910
Subject:
filtration,   etc   ; bacteria; bound water; sewage sludge; sewage treatment; walnut hulls;     Show all 6 Subjects
Abstract:
... In this research, ground walnut shells were used in order to improve the sewage sludge treatment. The influence of walnut shells on capillary suction time (CST); the sludge moisture content (MC), bound water (BW), the specific resistance to filtration (SRF) as well as the total bacteria number was investigated. The results have shown that the addition of ground walnut shells into sewage sludge aff ...
DOI:
10.1016/j.powtec.2019.11.100

16. Effect of adhesion on clogging of microparticles in fiber filtration by DEM-CFD simulation

Author:
Tao, Ran; Yang, Mengmeng; Li, Shuiqing
Source:
Powder technology 2020 v.360 pp. 289-300
ISSN:
0032-5910
Subject:
filtration,   etc   ; adhesion; fluid mechanics; industry; microparticles; physical phases; powders;     Show all 7 Subjects
Abstract:
... The clogging mechanism has attracted increasing attention due to widespread applications of fibrous filtration in the industry. We carry out computational fluid dynamics with a discrete element method to investigate the clogging in a two-fiber system. The role of interparticle adhesion among microparticles in the unclogging-clogging transition is examined. A clogging phase diagram in the form of t ...
DOI:
10.1016/j.powtec.2019.09.083

17. On the design of sustainable antifouling system for the crossflow filtration of oily water systems: A multicontinuum and CFD investigation of the periodic feed pressure technique

Author:
Salama, Amgad; Zoubeik, Mohamed; Henni, Amr; Ng, Kelvin T.W.; Ibrahim, Hussameldin
Source:
The Science of the total environment 2020 v.698 pp. 134288
ISSN:
0048-9697
Subject:
filtration,   etc   ; antifouling activities; cleaning; droplets; emulsions; fouling; models; oils;     Show all 8 Subjects
Abstract:
... The problem of fouling is considered a major reason for deteriorating the performance of porous membranes. Even though the accumulations of materials at the membrane surface are inevitable, efforts are continuously spent to minimize their drawbacks. Several techniques have been tested to minimize the problem of fouling. Some of these methods, however, confront some technical difficulties that make ...
DOI:
10.1016/j.scitotenv.2019.134288

18. Quality by Design approaches to assessing the robustness of tangential flow filtration for MAb

Author:
Wee, Hyun; Koo, KeunHoe; Bae, EunJeong; Lee, TaekYeol
Source:
Biologicals 2020 v.63 pp. 53-61
ISSN:
1045-1056
Subject:
filtration,   etc   ; case studies; models; monoclonal antibodies; quality control; risk assessment;     Show all 6 Subjects
Abstract:
... Quality by Design (QbD) is a modern approach for quality assurance in pharmaceutical production. This article illustrates a case study of TFF robustness performed for a process characterization of a monoclonal antibody under QbD principles by exploring functional relationships that link the process parameters to quality/process attributes with prior process knowledge, risk assessment, and multivar ...
DOI:
10.1016/j.biologicals.2019.12.001

19. Protocol efficiently measuring the swelling rate of hydrogels

Author:
Zhang, Katherine; Feng, Wuxiang; Jin, Congrui
Source:
MethodsX 2020 v.7 pp. 100779
ISSN:
2215-0161
Subject:
filtration,   etc   ; aqueous solutions; hydrogels; polymers; powders; swelling (materials); tea bags;     Show all 7 Subjects
Abstract:
... Hydrogels are polymeric materials which can swell in water and retain a significant fraction of water within their structure without dissolving in water. Swelling rate is one of the most important properties of hydrogels. To measure the swelling rate, the profile of swelling capacity versus time of a hydrogel sample is obtained by performing free-absorbency capacity measurements at consecutive tim ...
DOI:
10.1016/j.mex.2019.100779
PubMed:
31993340
PubMed Central:
PMC6974764

20. Recent advances in nanotechnology-based drug delivery systems for the kidney

Author:
Oroojalian, Fatemeh; Charbgoo, Fahimeh; Hashemi, Maryam; Amani, Amir; Yazdian-Robati, Rezvan; Mokhtarzadeh, Ahad; Ramezani, Mohammad; Hamblin, Michael R.
Source:
Journal of controlled release 2020 v.321 pp. 442-462
ISSN:
0168-3659
Subject:
filtration; glomerular filtration rate,   etc   ; acute kidney injury; blood; cytotoxicity; drug delivery systems; fibrosis; human health; humans; hypertension; kidney neoplasms; kidneys; medicine; molecular weight; nanoparticles; pharmacokinetics; urine; wastes;     Show all 18 Subjects
Abstract:
... The application of nanotechnology in medicine has the potential to make a great impact on human health, ranging from prevention to diagnosis and treatment of disease. The kidneys are the main organ of the human urinary system, responsible for filtering the blood, and concentrating metabolic waste into urine by means of the renal glomerulus. The glomerular filtration apparatus presents a barrier ag ...
DOI:
10.1016/j.jconrel.2020.02.027