Flocculating properties of 2-acrylamido-2-methyl-1-propane sulfonic acid-co-allylamine polyampholytic copolymers

Abdiyev, Kaldibek; Marić, Milan; Orynbayev, B. Ye.; Toktarbay, Zh.; Zhursumbaeva, M. B.; Seitkaliyeva, N. Zh.

doi:10.1007/s00289-021-03994-2

Cited by 11 publications

(10 citation statements)

References 53 publications

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“…Thus, when the copolymer is added to the bentonite suspension, positively charged copolymer macromolecules are adsorbed onto the surface of the bentonite particles via an electrostatic mechanism [ 66 , 67 ]. The cooperative electrostatic interaction between copolymer chains and suspension particles occurs according to the polymer complex formation and bridging mechanism [ 66 , 67 , 68 , 69 ]. As a result, the surface charge of the bentonite particles decreases and the interaction between the bentonite suspension particles is enhanced.…”

Section: Resultsmentioning

confidence: 99%

A Novel Cationic Polymer Surfactant for Regulation of the Rheological and Biocidal Properties of the Water-Based Drilling Muds

et al. 2023

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The copolymer of N,N-diallyl-N,N-dimethylammonium chloride and N-[3-(Dimethylamino)propyl]methacrylamide (DADMAC–DMAPMA) was synthesized by radical polymerization reaction in an aqueous solution in the presence of the initiator ammonium persulfate (NH4)2S2O8. The molar compositions of the synthesized copolymers were determined using FTIR and 1H NMR-spectroscopy, elemental analysis, and conductometric titration. It was found that in the radical copolymerization reaction, the DMAPMA monomer was more active than the DADMAC monomer; for this reason, the resulting copolymers were always enriched in the DMAPMA monomers. The study of the influence of the DADMAC–DMAPMA copolymer on structure-formation in the bentonite suspension showed that this copolymer significantly increased the static shear stress (SSS) of the system. In this case, the structure-forming properties of the copolymer depended on the pH of the medium. The lower the pH level, the better the structure-formation was in the suspension in the presence of the copolymer. The study of antibacterial activity showed that the DADMAC–DMAPMA copolymer had a biocidal effect against sulfate-reducing bacteria (CRB) at a concentration of not less than 0.05 wt.% and can be used to inhibit the growth of this bacteria.

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Section: Resultsmentioning

confidence: 99%

A Novel Cationic Polymer Surfactant for Regulation of the Rheological and Biocidal Properties of the Water-Based Drilling Muds

et al. 2023

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“…Coagulation and flocculation are processes of precipitation of suspended dispersed particles present in solutions by adding electrolytes (coagulants) and water-soluble polymers (flocculants) [31][32][33][34]. They can be used to concentrate impurities in a flocculent form, which can be easily removed by sedimentation.…”

Section: Coagulation and Flocculationmentioning

confidence: 99%

Review of Slow Sand Filtration for Raw Water Treatment with Potential Application in Less-Developed Countries

Abdiyev¹,

Azat²,

Kuldeyev³

et al. 2023

Preprint

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Providing safe drinking water to people in developing countries is an urgent world-wide water problem and a main issue in the UN Sustainability Goals. One of the most efficient and cheapest methods to attain these goals is the use of slow sand filters. Slow sand filters can efficiently provide safe drinking water to people living in small rural communities not served by central water supply systems. The purpose of this review article is to critically summarize and synthesize features and advantages of slow sand filtration methods to improve the quality of drinking water with special focus on less-developed countries. Even though slow sand filtration is an old technique, its efficiency and cost-effectiveness make it important to continue to develop the method in parallel to other chemical and biological methods. Thus, there are needs to continue to develop methods for slow sand filtration combined with simple disinfection techniques for treatment of microbiological pollutants such as bacteria, microbes, viruses, and parasites. These techniques can be applied before or after the sand filter application. Studies are also needed to investigate other types of porous material in areas where suitable sand and gravel are not readily available. Methods are needed to reduce the contents of emerging environmental pollutants such as surfactants and microplastics. Also, further studies are needed to determine design criteria (particle size distribution, depth of media, residence time, temperature, etc.) for different types of pollutants, existing and emerging. Finally, further research is needed to advise on life cycle time, operation (e.g., batch or continuous flow), and maintenance procedures (cleaning of media, back-flushing, etc.) for used porous media in slow the sand filtration.

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“…Water is known as the most vital natural resource, such that its severe shortage brings global concerns [1,2]. Its scarcity has the potential to seriously restrict the development and continuation of human activities [3].…”

Section: Introductionmentioning

confidence: 99%

Water Shortage Simulation Using a System Dynamics Approach: A Case Study of the Rafsanjan City

et al. 2023

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Water shortage and its interconnected and integrated management is one of the life crises in recent years. Factors such as population growth, plurality of population needs, traditional farming methods, climate change, and water waste are among the contributing factors to this crisis. The complexity of water sources and consumption systems makes the management and decision-making related to this resource very difficult. This research aims to study the effective factors in the water sources and consumption system of Rafsanjan city and suggests a simulated model of water shortage and its causes. In this research, water shortage crises were simulated using system dynamics. Important variables of the water shortage crisis are identified and optimized using the Design of Experiments (DOE) method. Vensim software was considered to illustrate the simulations of five scenarios aiming at better managing water resources and dealing with the water shortage crisis in this city.

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Flocculating properties of 2-acrylamido-2-methyl-1-propane sulfonic acid-co-allylamine polyampholytic copolymers

Cited by 11 publications

References 53 publications

A Novel Cationic Polymer Surfactant for Regulation of the Rheological and Biocidal Properties of the Water-Based Drilling Muds

A Novel Cationic Polymer Surfactant for Regulation of the Rheological and Biocidal Properties of the Water-Based Drilling Muds

Review of Slow Sand Filtration for Raw Water Treatment with Potential Application in Less-Developed Countries

Water Shortage Simulation Using a System Dynamics Approach: A Case Study of the Rafsanjan City

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