Construction of portable drinking water device using an agricultural biomass-derived material of polyethylenimine-grafted-corncob

Shen, Chong; Sheng-dong, WU

doi:10.1016/j.foodcont.2021.108375

Cited by 9 publications

(4 citation statements)

References 23 publications

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“…In papers [1][2][3][4][5][6][7] the authors investigated the influence of various sorbents on technologies and water quality during the extraction of heavy metal ions. Technologies based on the use of biological factors are considered in works [8][9][10][11][12] and sorbents based on bentonite clays are considered in [13][14][15][16]. Researches [3; 4] show bentonites and zeolites as the most promising sorbents mainly due to their availability and technological convenience.…”

Section: Analysis Of Recent Research and Publicationsmentioning

confidence: 99%

Determination of Hydraulic Grain Size of Natural and Artificial Sorbents for Simulation of Settle Facility

Marysyk

2022

LRaWM

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In the conditions of progressive contamination of surface sources of water supply and inefficient wastewater treatment when using existing water treatment technologies, the research problem and the justification of the use of sorption materials for the retention of specific pollutants, in particular heavy metal ions and radionuclides, is urgent. The parameters that determine the efficiency of sorbents are indicators of their sedimentation rate. The purpose of the experiments was to determine the sedimentation rate indicators for bentonite and copper ferrocyanide, build sorbent sedimentation graphs, and establish the estimated sedimentation rate of sorbents in the sedimentation tank based on the studied data considering temperature regime. Deposition of the sorbent in settling tanks occurs with the non-stop movement of water at a low speed in the direction from the inlet to the outlet. The experiments are aimed at substantiating the efficiency and criteria of a universal facility, which is able to work equally effectively with sorbents in different aggregate states. The process of sorbent sedimentation in water is characterized by the kinetics of sorbent flakes conglomerates sedimentation. These processes are displayed in the form of deposition kinetics graphs. The experiment used powdered bentonite and a solution of copper ferrocyanide, consisting of yellow blood salt and copper sulphate in a given proportional ratio. In the course of the study the following parameters were determined: the hydraulic grain size of bentonite powdery clay, the dependence of the sedimentation rate on the temperature regime. The liquid layer was divided into layers that show changes in the amount of suspended substances depending on the depth, which made it possible to determine the dimensions of the settling tank, the height of the liquid overflow, which, in turn, made it possible to conduct simulation experiments on virtual machines with a full-scale clarifier-absorber in accordance to geometric parameters.

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Section: Analysis Of Recent Research and Publicationsmentioning

confidence: 99%

Determination of Hydraulic Grain Size of Natural and Artificial Sorbents for Simulation of Settle Facility

Marysyk

2022

LRaWM

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“…17 Bacteria can also be adsorbed onto layer-by-layer coatings of polyelectrolytes, 18 or grafted poly(cations). 19 Electrostatic attraction is a reliable interaction in this context, as the bacterial cell envelope is negatively charged. 20 To create defined functional surface coatings, polymer brushes are a versatile toolbox.…”

Section: Introductionmentioning

confidence: 99%

Modification of 3D-printed PLA structures using Photo-iniferter RAFT Polymerization: Toward on-demand antimicrobial water filters

Lehnen

Hanke

Schneider

et al. 2023

Preprint

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Water filtration is an important application field to ensure the accessibility of clean drinking water. As requirements and contaminants vary on a local level, adjustable filter devices and their evaluation with contaminants are required. Within this work we design modular filter devices featuring an adjustable surface functionalization. For this purpose, we create 3D-printed structures fabricated of bio-based poly(lactic acid) (PLA) that are manufactured by extrusion printing. The surface of PLA is activated with amino groups that are used to install xanthates as chain transfer agents (CTA)s. Subsequently, photo-iniferter (PI)-RAFT polymerization is used to create cationic polymer brushes on the surface of PLA substrates. The polymerization is first optimized in solution and then transferred to the interface of 3D-printed devices. Multiple surface characterization techniques are employed to prove successful growth of polymer brushes on PLA. The degree of polymerization of cationic polymers is varied and found to influence the interaction of the interface with planktonic bacteria. After initial optimization studies on flat surfaces, filter devices are printed, functionalized, and used to remove bacteria from contaminated water. Significant reduction of microorganisms is detected after filtration (single filtration or cycling) and contaminating organism could also be removed from freshwater samples by simple incubation with a 3D-printed filter. The herein developed setup for producing functional filter devices and probing their performance in affinity filtration is a useful platform technology, enabling the implementation of polymer brushes for such applications. The combination of additive manufacturing and the modularity of the surface functionalization reaction enables rapid adjustability of the system.

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“…[ 17 ] Bacteria can also be adsorbed onto layer‐by‐layer coatings of polyelectrolytes, [ 18 ] or grafted poly(cations). [ 19 ] Electrostatic attraction is a reliable interaction in this context, as the bacterial cell envelope is negatively charged. [ 20 ]…”

Section: Introductionmentioning

confidence: 99%

Modification of 3D‐Printed PLA Structures Using Photo‐Iniferter Polymerization: Toward On‐Demand Antimicrobial Water Filters

Lehnen

Hanke

Schneider

et al. 2023

Macromol. Rapid Commun.

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Water filtration is an important application field to ensure the accessibility of clean drinking water. As requirements and contaminants vary on a local level, adjustable filter devices and their evaluation with contaminants are required. Within this work we design modular filter devices featuring an adjustable surface functionalization. For this purpose, we create 3D‐printed structures consisting of bio‐based poly(lactic acid) (PLA) that are manufactured by extrusion printing. The surface of PLA is activated with amino groups that are used to install xanthates as chain transfer agents. Subsequently, photo‐iniferter (PI) polymerization is used to create cationic polymer brushes on the surface of PLA substrates. Multiple surface characterization techniques are employed to prove successful growth of polymer brushes on PLA. After initial optimization studies on flat surfaces, filter devices are printed, functionalized, and used to remove bacteria from contaminated water. Significant reduction of the number of microorganisms is detected after filtration (single filtration or cycling) and contaminating organism could also be removed from freshwater samples by simple incubation with a 3D‐printed filter. The herein developed setup for producing functional filter devices and probing their performance in affinity filtration is a useful platform technology, enabling the rapid testing of polymer brushes for such applications.This article is protected by copyright. All rights reserved

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Construction of portable drinking water device using an agricultural biomass-derived material of polyethylenimine-grafted-corncob

Cited by 9 publications

References 23 publications

Determination of Hydraulic Grain Size of Natural and Artificial Sorbents for Simulation of Settle Facility

Determination of Hydraulic Grain Size of Natural and Artificial Sorbents for Simulation of Settle Facility

Modification of 3D-printed PLA structures using Photo-iniferter RAFT Polymerization: Toward on-demand antimicrobial water filters

Modification of 3D‐Printed PLA Structures Using Photo‐Iniferter Polymerization: Toward On‐Demand Antimicrobial Water Filters

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