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1. Extracellular Phytoplankton Production and Its Importance for Heterotrophic Activity of Bacteria

Author:
Boulion, V. V.
Source:
Biology bulletin of the Russian Academy of Sciences 2021 v.48 no.3 pp. 358-366
ISSN:
1062-3590
Subject:
filtration,   etc   ; carbon radioisotopes; phytoplankton;     Show all 3 Subjects
Abstract:
... The ecological role of the extracellular production of phytoplankton is discussed. The experiments based on a radiocarbon method combined with differential filtration of water samples have shown that approximately 20% of the phytoplankton production is transformed into bacterial production in marine and fresh waters of different trophic status. ...
DOI:
10.1134/S1062359021030043

2. Expressionist view of culinary creativity: A culinary theory exercised with specialty coffee

Author:
Lee, Kai-Sean
Source:
International journal of gastronomy and food science 2021 v.23 pp. 100311
ISSN:
1878-450X
Subject:
filtration,   etc   ; gastronomy; pummelos; social sciences;     Show all 4 Subjects
Abstract:
... Social science theories, particularly those from the praxis of culinary arts, are meaningful only when they are authenticated in practice. Using the specialty coffee context, the purpose of this article is twofold. The first is to exercise an existing culinary creativity theory in practice; and the second is to develop a new brewing concept that is readily operationalizable for practice. Informed ...
DOI:
10.1016/j.ijgfs.2021.100311

3. Wetting of electrospun nylon-11 fibers and mats

Author:
Bagrov, Dmitry; Perunova, Svetlana; Pavlova, Elizaveta; Klinov, Dmitry
Source:
RSC advances 2021 v.11 no.19 pp. 11373-11379
ISSN:
2046-2069
Subject:
filtration,   etc   ; aluminum foil; contact angle;     Show all 3 Subjects
Abstract:
... Wetting of electrospun mats plays a huge role in tissue engineering and filtration applications. However, it is challenging to trace the interrelation between the wetting of individual nano-sized fibers and the macroscopic electrospun mat. Here we measured the wetting of different nylon-11 samples – solution-cast films, electrospun fibers deposited onto a substrate, and free-standing mats. With el ...
DOI:
10.1039/d0ra10788c

4. Valorization of polymeric fractions and metals from end of life photovoltaic panels

Author:
Rubino, Antonio; Schiavi, Pier Giorgio; Altimari, Pietro; Pagnanelli, Francesca
Source:
Waste management 2021 v.122 pp. 89-99
ISSN:
0956-053X
Subject:
filtration,   etc   ; glass; photovoltaic cells; polymers;     Show all 4 Subjects
Abstract:
... The increase in the annual flux of the end-of-life photovoltaic panels (EoL-PVPs) imposed the development of effective recycling strategies to reach EU regulation targets (i.e. 80% recycling; 85% recovery, starting from August 2018). The recycling targets in a PVP are generally glass, photovoltaic cell and metals, while no scientific paper or patent addressed polymeric fractions recycling and reco ...
DOI:
10.1016/j.wasman.2020.12.037

5. PVDF fiber membrane with ordered porous structure via 3D printing near field electrospinning

Author:
Liang, Yuanyuan; Zhao, Jian; Huang, Qinglin; Hu, Peng; Xiao, Changfa
Source:
Journal of membrane science 2021 v.618 pp. 118709
ISSN:
0376-7388
Subject:
filtration,   etc   ; geometry; permeability; porosity; thermoplastics;     Show all 5 Subjects
Abstract:
... A novel polyvinylidene fluoride (PVDF) fiber membrane with ordered geometric pore structure was fabricated via 3D printing near field electrospinning (NFES) technology. PVDF/SiO₂ solution was electrospun into fiber membrane with a series of preset regular geometric pore structure, including triangle, rectangle, hexagon and square, as well as cylindrical pores. The obtained PVDF fiber membrane show ...
DOI:
10.1016/j.memsci.2020.118709

6. Modifying thin-film composite forward osmosis membranes using various SiO2 nanoparticles for aquaculture wastewater recovery

Author:
Nguyen, Truc-Quynh; Tung, Kuo-Lun; Lin, Yi-Li; Dong, Cheng-Di; Chen, Chiu-Wen; Wu, Chung-Hsin
Source:
Chemosphere 2021 v.281 pp. 130796
ISSN:
0045-6535
Subject:
filtration,   etc   ; hydrophilicity; osmosis; polyamides; silica; solutes; wastewater;     Show all 7 Subjects
Abstract:
... This paper describes the fabrication, modification, and evaluation of the performance of thin-film composite (TFC) forward osmosis (FO) membranes for lab-scale aquaculture wastewater recovery using various fumed silica (SiO₂) nanoparticles. The active polyamide (PA) layers of these membranes were novelly modified using different types of pretreated SiO₂ nanoparticles [virgin SiO₂, dried SiO₂, and ...
DOI:
10.1016/j.chemosphere.2021.130796

7. Heating-driven assembly of covalent organic framework nanosheets for gas separation

Author:
Zhao, Yingjie; Liu, Peng; Ying, Yunpan; Wei, Kunpeng; Zhao, Dan; Liu, Dahuan
Source:
Journal of membrane science 2021 v.632 pp. 119326
ISSN:
0376-7388
Subject:
filtration,   etc   ; ambient temperature; carbon dioxide; nanosheets;     Show all 4 Subjects
Abstract:
... Covalent organic frameworks (COFs) are a family of promising membrane materials because of their intrinsic pores with uniform size, tunable functionalities, and high stability. Especially, two-dimensional (2D) COFs can be exfoliated into single- or few-layered nanosheets and restacked into molecular sieving membranes through controlling restacking modes and thickness. However, traditional methods ...
DOI:
10.1016/j.memsci.2021.119326

8. The impact of climate factors on airborne particulate matter removal by plants

Author:
Zhang, Rui; Ma, Keming
Source:
Journal of cleaner production 2021 v.310 pp. 127559
ISSN:
0959-6526
Subject:
filtration,   etc   ; green infrastructure; models; particulates; wind speed;     Show all 5 Subjects
Abstract:
... Airborne particulate matter (PM) filtration by plants is a process of continuous PM accumulation and periodic washing, in which climate factors plays a key role. However, most of the relevant studies have focused on the impact of single meteorological factors, the influencing mechanism of comprehensive meteorological factors, i.e., climate, on PM filtration by plants remains unclear. Coupled with ...
DOI:
10.1016/j.jclepro.2021.127559

9. Development of a fluid dynamic gauging method for the characterization of fouling behavior during cross-flow filtration of a wood extraction liquor

Author:
Arandia, Kenneth; Balyan, Upasna; Mattsson, Tuve
Source:
Food and bioproducts processing 2021 v.128 pp. 30-40
ISSN:
0960-3085
Subject:
filtration,   etc   ; biobased products; decline; softwood; steam;     Show all 5 Subjects
Abstract:
... A method based on fluid dynamic gauging (FDG) was developed to investigate the membrane fouling behavior of streams containing dissolved wood components and small particles extracted using a mild steam explosion pretreatment. Industrially chipped softwood was subjected to saturated steam at 7bar for 20min, followed by cross-flow filtration of steam explosion liquors using 10kDa polysulfone membran ...
DOI:
10.1016/j.fbp.2021.04.009

10. Evaluation of solids removal and optimisation of backwashing for an upflow stormwater filtration system utilising novel floating fibrous media

Author:
Hwang, Yuhoon; Seo, Younggyo; Kim, Hyowon; Roh, Kunwan; Kim, Dogun
Source:
Environmental technology 2021 v.42 no.14 pp. 2132-2144
ISSN:
1479-487X
Subject:
filtration,   etc   ; air; environmental technology; permeability; porosity; stormwater;     Show all 6 Subjects
Abstract:
... Although filtration devices are already widely used for stormwater runoff treatment, there are much to be improved to ensure the required performance. Additionally, the performance of a device should be verified before on-site installation. In this context, an upflow filtration system using novel high porosity floating fibrous media formed into spherical shape was proposed and evaluated for solid ...
DOI:
10.1080/09593330.2019.1694080

11. State of the art of particle emissions in thermal spraying and other high energy processes based on metal powders

Author:
Darut, G.; Dieu, S.; Schnuriger, B.; Vignes, A.; Morgeneyer, M.; Lezzier, F.; Devestel, F.; Vion, A.; Berguery, C.; Roquette, J.; Le Bihan, O.
Source:
Journal of cleaner production 2021 v.303 pp. 126952
ISSN:
0959-6526
Subject:
filtration,   etc   ; atomization; dust; energy; equipment; surveys; France;     Show all 7 Subjects
Abstract:
... Thermal spray is a high energy-based process, like additive manufacturing and powder atomization, leading to fine particle emission. But there is little information about these nanoparticles and their characteristics: workers’ exposure, filtration efficiency, dustiness. This paper aims to update the knowledge of the thermal spray community, to focus on thermal spraying and to a lesser degree on po ...
DOI:
10.1016/j.jclepro.2021.126952

12. Adaptive perfusion: An in vitro release test (IVRT) for complex drug products

Author:
Patel, Deval; Zhang, Ying; Dong, Yixuan; Qu, Haiou; Kozak, Darby; Ashraf, Muhammad; Xu, Xiaoming
Source:
Journal of controlled release 2021 v.333 pp. 65-75
ISSN:
0168-3659
Subject:
filtration,   etc   ; dialysis; drugs; micelles; molecular weight; particulates;     Show all 6 Subjects
Abstract:
... In this work, adaptive perfusion, a pressure-driven separation method based on the principle of tangential flow filtration (TFF) was developed for investigating the rate and extent of drug release from drug products containing particulates, such as emulsions, suspensions, liposomes, drug-protein complexes. The TFF filters were pre-conditioned with unique conditioning solutions and processes to imp ...
DOI:
10.1016/j.jconrel.2021.03.024

13. Media filter fouling assessment using optical coherence tomography: New methodology

Author:
Duran-Ros, Miquel; Solé-Torres, Carles; Ait-Mouheb, Nassim; Molle, Bruno; Arbat, Gerard; Puig-Bargués, Jaume
Source:
Biosystems engineering 2021 v.204 pp. 26-35
ISSN:
1537-5110
Subject:
filtration,   etc   ; gravimetry; irrigation water; microirrigation; tomography; wastewater;     Show all 6 Subjects
Abstract:
... Drip irrigation is an efficient and safe system for reusing wastewater in agriculture. Since emitter clogging is its main limitation, filtration is needed for preventing it. Media filters are commonly used when irrigation water has a high particle load. However, particle removal through a media bed in media filters used in drip irrigation systems has not been widely studied mainly due to experimen ...
DOI:
10.1016/j.biosystemseng.2021.01.008

14. Investigation of pore water and soil extraction tests for characterizing the fate of poorly soluble metal-oxide nanoparticles

Author:
Rodrigues, Sandra; Bland, Garret D.; Gao, Xiaoyu; Rodrigues, Sónia M.; Lowry, Gregory V.
Source:
Chemosphere 2021 v.267 pp. 128885
ISSN:
0045-6535
Subject:
filtration,   etc   ; bioavailability; environmental exposure; soil types;     Show all 4 Subjects
Abstract:
... Here we compared the efficiency of Cu extraction (dissolved + particulate) from two soils dosed with CuO nanoparticles (NPs) at 50 or 250 mg kg⁻¹ by pore water collection, and single- and multi-step soil extraction tests. Pore water collection recovered low levels of Cu (<0.18%, regardless of soil type or Cu dose). Single soil extraction by either CaCl₂ or DI water led to higher Cu recovery than p ...
DOI:
10.1016/j.chemosphere.2020.128885

15. Lead removal from water using organic acrylic amine fiber (AAF) and inorganic-organic P-AAF, fixed bed filtration and surface-induced precipitation

Author:
Wei, Jinshan; Duan, Lijie; Wei, Jian; Hoffmann, Erhard; Song, Yonghui; Meng, Xiaoguang
Source:
Journal of environmental sciences (China) 2021 v.101 pp. 135-144
ISSN:
1001-0742
Subject:
filtration,   etc   ; adsorption; lead; phosphorus; sorbents; China;     Show all 6 Subjects
Abstract:
... Granular porous sorbents were normally used for heavy metals removal from water. To search for the new commercial sorbent and treatment strategy, an organic acrylic amine fiber (AAF) and phosphorus loading inorganic-organic AAF (P-AAF) were prepared and used for lead (Pb) removal from water. A new strategy of inorganic-organic coupling technology was proposed for Pb removal, based on the hypothesi ...
DOI:
10.1016/j.jes.2020.08.009

16. The use of biomimetic tools for water quality monitoring: passive samplers versus sentinel organisms

Author:
Morrone, M.; Cappelletti, N. E.; Tatone, L. M.; Astoviza, M. J.; Colombo, J. C.
Source:
Environmental monitoring and assessment 2021 v.193 no.3 pp. 114
ISSN:
0167-6369
Subject:
filtration,   etc   ; biomimetics; hydrophobicity; polychlorinated biphenyls; water quality;     Show all 5 Subjects
Abstract:
... To evaluate the performance of artificial and biological integrative sampling strategies, dissolved concentrations of polychlorinated biphenyl (PCBs) and metals (Cu and Mn) were measured with passive sampler devices (PSD) enclosing hydrophobic and chelating phases, and Asiatic clams were transplanted to a polluted area in the Rio de la Plata. Water concentrations based on PSD were compared with sp ...
DOI:
10.1007/s10661-021-08856-y

17. Osmotic backwashing of forward osmosis membranes to detach adhered bacteria and mitigate biofouling

Author:
Daly, Sorcha; Casey, Eoin; Semião, Andrea J.C.
Source:
Journal of membrane science 2021 v.620 pp. 118838
ISSN:
0376-7388
Subject:
filtration,   etc   ; adhesion; biofouling; calcium; osmosis; osmotic stress;     Show all 6 Subjects
Abstract:
... The efficiency of osmotic backwashing cleaning to remove bacteria from forward osmosis membranes was systematically studied for the first time under different attachment and osmotic backwashing conditions. It is hypothesized that biofouling is preventable when tackling initial adhesion, i.e. during the reversible stage. Cell removal from the membrane was dependent on both adhesion and backwashing ...
DOI:
10.1016/j.memsci.2020.118838

18. Simulation of cake layer topography in heterotrophic microalgae harvesting based on interface modified diffusion-limited-aggregation (IMDLA) and its implications for membrane fouling control

Author:
Yu, Zhenjiang; Chu, Huaqiang; Xiao, Shaoze; Jiang, Shuhong; Yang, Libin; Zhang, Yalei; Zhou, Xuefei
Source:
Journal of membrane science 2021 v.620 pp. 118837
ISSN:
0376-7388
Subject:
filtration,   etc   ; cakes; evolution; microalgae; models; topography;     Show all 6 Subjects
Abstract:
... Membrane technology, as an effective method for heterotrophic microalgae harvesting, is still restricted by the inevitable fouling and unclear fouling mechanisms. Accordingly, in this study, IMDLA model was developed to simulate the cake layer topography and predicate the local fouling tendency. A series of experiments and characterizations were designed to certify the feasibility of this model. T ...
DOI:
10.1016/j.memsci.2020.118837

19. Sterilization of polypropylene membranes of facepiece respirators by ionizing radiation

Author:
Pirker, Luka; Krajnc, Anja Pogačnik; Malec, Jan; Radulović, Vladimir; Gradišek, Anton; Jelen, Andreja; Remškar, Maja; Mekjavić, Igor B.; Kovač, Janez; Mozetič, Miran; Snoj, Luka
Source:
Journal of membrane science 2021 v.619 pp. 118756
ISSN:
0376-7388
Subject:
filtration,   etc   ; energy; gamma radiation; irradiation; polypropylenes;     Show all 5 Subjects
Abstract:
... Ionizing radiation has been identified as an option for sterilization of disposable filtering facepiece respirators in situations where the production of the respirators cannot keep up with demand. Gamma radiation and high energy electrons penetrate deeply into the material and can be used to sterilize large batches of masks within a short time period. In relation to reports that sterilization by ...
DOI:
10.1016/j.memsci.2020.118756

20. Harvesting microalgae using vibrating, negatively charged, patterned polysulfone membranes

Author:
Zhao, Zhenyu; Liu, Bao; Ilyas, Ayesha; Vanierschot, Maarten; Muylaert, Koenraad; Vankelecom, Ivo F.J.
Source:
Journal of membrane science 2021 v.618 pp. 118617
ISSN:
0376-7388
Subject:
filtration,   etc   ; microalgae; organic matter; turbulent flow; vibration;     Show all 5 Subjects
Abstract:
... Key issues for membrane technology in harvesting microalgae are to reach high fluxes and to alleviate fouling by microalgal cells and extracellular organic matter. To achieve this goal, negatively charged patterned membranes were prepared from polysulfone/sulfonated polysulfone (PSf/sPSf) blends using a spray-modified phase inversion method, and the effect of sPSf on the membrane morphology and fi ...
DOI:
10.1016/j.memsci.2020.118617