Application of Low-Cost Materials Coated with Silver Nanoparticle as Water Filter in Escherichia coli Removal

2015 ◽  
Vol 7 (4) ◽  
pp. 617-625 ◽  
Author(s):  
Sarva Mangala Praveena ◽  
Ahmad Zaharin Aris
Keyword(s):  
Escherichia Coli ◽  
Silver Nanoparticle ◽  
Low Cost ◽  
Water Filter

scholarly journals Engineering and characterization of gymnosperm sapwood toward enabling the design of water filtration devices

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Krithika Ramchander ◽  
Megha Hegde ◽  
Anish Paul Antony ◽  
Luda Wang ◽  
Kendra Leith ◽  
...  
Keyword(s):  
Shelf Life ◽  
Social Acceptance ◽  
Low Cost ◽  
Global Scale ◽  
Coliform Bacteria ◽  
Diverse Range ◽  
Water Filter ◽  
Synthetic Test ◽  
Xylem Tissue ◽  
Filtration Material

AbstractNaturally-occurring membranes in the xylem tissue of gymnosperm sapwood enable its use as an abundantly-available material to construct filters, with potential to facilitate access to safe drinking water in resource-constrained settings. However, the material’s behavior as a filter is poorly understood, and challenges such as short shelf life have not been addressed. Here, we characterize the operational attributes of xylem filters and show that the material exhibits a highly non-linear dependence of flow resistance on thickness upon drying, and a tendency for self-blocking. We develop guidelines for the design and fabrication of xylem filters, demonstrate gravity-operated filters with shelf life >2 years, and show that the filters can provide >3 log removal of E. coli, MS-2 phage, and rotavirus from synthetic test waters and coliform bacteria from contaminated spring, tap, and ground waters. Through interviews and workshops in India, we use a user-centric approach to design a prototype filtration device with daily- to weekly-replaceable xylem filters, and uncover indicators of social acceptance of xylem as a natural water filter. Our work enhances the understanding of xylem as a filtration material, and opens opportunities for engineering a diverse range of low-cost, biodegradable xylem-based filtration products on a global scale.

Low Cost Controlled Composting of Refuse and Sewage Sludge

1987 ◽  
Vol 19 (5-6) ◽  
pp. 839-845 ◽  
Author(s):  
J. T. Pereira-Neto ◽  
E. I. Stentiford ◽  
D. D. Mara
Keyword(s):  
Escherichia Coli ◽  
Sewage Sludge ◽  
Low Cost ◽  
Control Methods ◽  
Fixed Rate ◽  
The Past ◽  
Temperature Feedback ◽  
Forced Aeration ◽  
Domestic Refuse ◽  
Faecal Streptococci

The forced aeration static pile composting system was used to compost mixtures of domestic refuse and sewage sludge. Several different control methods have been evaluated over the past four years from simple, low cost fixed rate aeration timers to microcomputer based systems. Their relative merits are considered. In a compost pile using temperature feedback control the number of Escherichia coli were reduced from 107 org./g to less than 102 org./g. within 16 days. Faecal streptococci were reduced from 107 to less than 102 org./g within 30 days. The process consistently produced a good quality sanitised material under a range of control regimes.

scholarly journals Rapid, simple, low-cost smartphone-based fluorescence detection of Escherichia coli

2021 ◽  
Vol 14 (3) ◽  
pp. 167-174
Author(s):  
Dante Rojas-Barboza ◽  
◽  
Edward Park ◽  
Rolfe Sassenfeld ◽  
Jeremy Winder ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Fluorescence Detection ◽  
Low Cost

Pilot-scale process development for low-cost production of a thermostable biodiesel refining enzyme in Escherichia coli

2018 ◽  
Vol 41 (4) ◽  
pp. 555-564 ◽  
Author(s):  
Florencia Eberhardt ◽  
Andres Aguirre ◽  
Luciana Paoletti ◽  
Guillermo Hails ◽  
Mauricio Braia ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Process Development ◽  
Low Cost ◽  
Pilot Scale

scholarly journals Layer Morphology and Ink Compatibility of Silver Nanoparticle Inkjet Inks for Near-Infrared Sintering

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 892
Author(s):  
Dieter Reenaers ◽  
Wouter Marchal ◽  
Ianto Biesmans ◽  
Philippe Nivelle ◽  
Jan D’Haen ◽  
...  
Keyword(s):  
Silver Nanoparticle ◽  
High Speed ◽  
Processing Time ◽  
Near Infrared ◽  
Printed Electronics ◽  
Low Cost ◽  
Low Complexity ◽  
Post Processing ◽  
Drop On Demand ◽  
Processing Step

The field of printed electronics is rapidly evolving, producing low cost applications with enhanced performances with transparent, stretchable properties and higher reliability. Due to the versatility of printed electronics, industry can consider the implementation of electronics in a way which was never possible before. However, a post-processing step to achieve conductive structures—known as sintering—limits the production ease and speed of printed electronics. This study addresses the issues related to fast sintering without scarifying important properties such as conductivity and surface roughness. A drop-on-demand inkjet printer is employed to deposit silver nanoparticle-based inks. The post-processing time of these inks is reduced by replacing the conventional oven sintering procedure with the state-of-the-art method, named near-infrared sintering. By doing so, the post-processing time shortens from 30–60 min to 6–8 s. Furthermore, the maximum substrate temperature during sintering is reduced from 200 °C to 120 °C. Based on the results of this study, one can conclude that near-infrared sintering is a ready-to-industrialize post-processing method for the production of printed electronics, capable of sintering inks at high speed, low temperature and with low complexity. Furthermore, it becomes clear that ink optimization plays an important role in processing inkjet printable inks, especially after being near-infrared sintered.

Polysaccharide-derived hydrogel water filter for the rapid and selective removal of arsenic

2019 ◽  
Vol 5 (7) ◽  
pp. 1318-1327 ◽  
Author(s):  
Santu Maity ◽  
Nabanita Naskar ◽  
Susanta Lahiri ◽  
Jhuma Ganguly
Keyword(s):  
Aqueous Solution ◽  
Low Cost ◽  
Liquid Extraction ◽  
Selective Removal ◽  
Water Filter ◽  
Solid Liquid Extraction ◽  
Removal Of Arsenic ◽  
Solid Liquid

A low-cost furfuraldehyde–chitosan cross-linked hydrogel (FCH) has been designed and synthesized as a smart bio-adsorbent for the selective removal of As(v) from an aqueous solution using a solid liquid extraction (SLX) technique.

High-efficiency and low-cost production of cadaverine from a permeabilized-cell bioconversion by a Lysine-induced engineered Escherichia coli

2020 ◽  
Vol 302 ◽  
pp. 122844 ◽  
Author(s):  
Jinqiu Rui ◽  
Shengping You ◽  
Yunxin Zheng ◽  
Chengyu Wang ◽  
Yingtong Gao ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
High Efficiency ◽  
Low Cost ◽  
Permeabilized Cell ◽  
Engineered Escherichia Coli

ANALYSIS OF SELECTED BOREHOLE FILTERED SAMPLES IN IJEBU-ODE, OGUN STATE, NIGERIA

2020 ◽  
Vol 8 ◽  
pp. 1
Author(s):  
Ismail Babatunde Onajobi ◽  
Hassan Adeyemi Sanuth ◽  
Sunday Ademola Laba ◽  
Abdul-Azeez Olayiwola Sirajudeen
Keyword(s):  
Escherichia Coli ◽  
Oxygen Demand ◽  
Total Suspended Solid ◽  
Suspended Solid ◽  
Diffusion Method ◽  
Southwestern Nigeria ◽  
Klebsiella Species ◽  
Water Filter ◽  
Ogun State ◽  
Borehole Water

This study was carried out to investigate the microbial and physiochemical quality of common borehole water filter installations. Ten (10) borehole filter samples were collected from private homes in Ijebu-Ode, Southwestern Nigeria. These were analyzed using standard procedures. Antibiotic susceptibility of isolates was determined using the standard disc diffusion method. The temperature o oand pH range of filter samples recorded was 27.6 – 28.9C and 6.09 – 6.90C respectively. Total dissolved solid, total suspended solid and total dissolved oxygen of filter samples recorded ranged 3 3between 10 - 55mg/L, 0.5 x10 - 17.14 x 10mg/L and 4.7 - 9.7mg/L respectively. Chemical oxygen demand ranged from 9.5 - 13.25mg/L while biochemical oxygen demand ranged from 4.5 - 8.5mg/L. Total heterotrophic count, Salmonella-Shigella count and Escherichia coli count ranged from 16 x 3 5 3 5 3 510 - 52 x10, 0 x 10 - 12 x 10 and 0 x 10 - 12 x10 CFU/mL respectively. Faecal coliform count 3 5ranged from 0 x 10 - 12 x10 CFU/mL. Nine bacteria isolated and identified includes: Escherichia coli, Klebsiella species, Staphylococcus aureus, Pseudomonas species, Pseudomonas aeruginosa, Proteus species, Bacillus cereus, Enterobacter species and Salmonella species. Escherichia coli was sensitive to all antibiotics, except augmentin. The highest level of resistance was exhibited by Enterobacter sp. This study revealed that the borehole water filter from Ijebu-Ode is of poor microbial and physiochemical quality. Further work needs to evaluate the filter composition and quality. Disinfection of water in storage tanks before distribution is strongly recommended as a short term solution.

Determination of Escherichia coli in urine using a low-cost foil-based microfluidic device

Talanta ◽  
2017 ◽  
Vol 170 ◽  
pp. 36-40
Author(s):  
Tereza Mašková ◽  
Lenka Hárendarčíková ◽  
Jan Petr
Keyword(s):  
Escherichia Coli ◽  
Microfluidic Device ◽  
Low Cost
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