scholarly journals Preparation and bacteriostatic research of porous polyvinyl alcohol / biochar / nanosilver polymer gel for drinking water treatment

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hang Zhao ◽  
Xuexiang Li ◽  
Liang Zhang ◽  
Zhihui Hu ◽  
Lvling Zhong ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Polyvinyl Alcohol ◽  
Drinking Water Treatment ◽  
Polymer Gel ◽  
Practical Application ◽  
Gel Beads ◽  
Ft Ir ◽  
Porous Silver ◽  
Pva Gel

AbstractMicrobial contamination in drinking water has become an important threat to human health. There is thus an urgent need to develop antibacterial materials to treat drinking water. Here, porous silver-loaded biochar (C–Ag) was prepared using corn straw as the substrate and silver as the antibacterial agent. C–Ag was then uniformly distributed in polyvinyl alcohol gel beads of eluted calcium carbonate to prepare p-PVA/C–Ag antibacterial composite. The polymer composites were tested by FT-IR, XRD, SEM and TG-DSC. The results showed that C–Ag was more evenly distributed in the PVA gel spheres. Antibacterial experiments showed that p-PVA/C–Ag greatly inhibited Escherichia coli. Practical application tests revealed that p-PVA/C–Ag showed high and sustained bactericidal inhibition and reusability. Generally, p-PVA/C–Ag composite shows high potential to be applied to drinking water treatment.

scholarly journals Preparation of Polyvinyl Alcohol/Bacterial-Cellulose-Coated Biochar–Nanosilver Antibacterial Composite Membranes

2020 ◽  
Vol 10 (3) ◽  
pp. 752 ◽  
Author(s):  
Liang Zhang ◽  
Sen Zheng ◽  
Zhihui Hu ◽  
Lvling Zhong ◽  
Yao Wang ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Drinking Water ◽  
Water Treatment ◽  
Polyvinyl Alcohol ◽  
Bacterial Cellulose ◽  
Pathogenic Bacteria ◽  
Drinking Water Treatment ◽  
Composite Membranes ◽  
Scanning Calorimetry ◽  
Ag Particles

Pathogenic bacteria and microorganisms in drinking water can cause various diseases, and new types of antibacterial material for water treatment and filtration are urgently needed. In this work, polyvinyl alcohol/bacterial cellulose/biochar–nanosilver (PVA/BC/C-Ag) antibacterial composite membrane materials were prepared by uniformly dispersing C-Ag particles in a PVA/BC mixed gel. Fourier-transform infrared spectroscopy (FT-IR), X-ray diffractometry (XRD), scanning electron microscopy (SEM), and thermogravimetric differential scanning calorimetry (TG-DSC) were used to characterize the composite membranes. Results indicated that the BC was uniformly mixed into the PVA gel and that the C-Ag particles were uniformly immobilized in the PVA/BC hybrid membrane. The PVA/BC/C-Ag composite membranes exhibited excellent antibacterial activity against Escherichia coli when assayed using a plate-counting technique. When used to treat actual contaminated water, the composite membranes demonstrated sustained antibacterial activity and good reusability. PVA/BC/C-Ag composite membranes have great potential for the development of drinking water treatment applications.

ASSESSMENT OF ELECTROCOAGULATION PROCESS FOR DRINKING WATER TREATMENT

2015 ◽  
Vol 14 (6) ◽  
pp. 1347-1354 ◽  
Author(s):  
Florica Manea ◽  
Anamaria Baciu ◽  
Aniela Pop ◽  
Katalin Bodor ◽  
Ilie Vlaicu
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Electrocoagulation Process

Drinking Water Surveillance Program in the St. Clair-Detroit River Area 1985/86

1986 ◽  
Vol 21 (3) ◽  
pp. 447-459 ◽  
Author(s):  
K.J. Roberts ◽  
R.B. Hunsinger ◽  
A.H. Vajdic
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Surveillance Program ◽  
Sampling Protocol ◽  
Detroit River ◽  
Water Treatment Plants

Abstract The Drinking Water Surveillance Program (DWSP), developed by the Ontario Ministry of the Environment, is an assessment project based on standardized analytical and sampling protocol. This program was recently instituted in response to a series of contaminant occurrences in the St. Clair-Detroit River area of Southwestern Ontario. This paper outlines the details and goals of the program and provides information concerning micro-contaminants in drinking water at seven drinking water treatment plants in Southwestern Ontario.

Cost and Benefits of Drinking Water Treatment

1984 ◽  
Vol 14 (1) ◽  
pp. 1-30 ◽  
Author(s):  
Robert M. Clark ◽  
James A. Goodrich ◽  
John C. Ireland
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment
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