Dextran derivatives application as flocculants

Ghimici, Luminiţa; Nichifor, Marieta

doi:10.1016/j.carbpol.2018.02.075

Cited by 35 publications

(15 citation statements)

References 66 publications

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“…Other bioflocculants based on dextran [ 116 , 117 ], pullulan [ 110 , 111 , 112 ], or pectin [ 118 ] have also been reported. Most of these polymers and their grafted derivatives have promising flocculating ability in reducing color, turbidity, COD, or heavy metal ions in various types of wastewater.…”

Section: Bio-based Polysaccharide Flocculants For Water Treatmentmentioning

confidence: 99%

Recent Achievements in Polymer Bio-Based Flocculants for Water Treatment

2020

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Polymer flocculants are used to promote solid–liquid separation processes in potable water and wastewater treatment. Recently, bio-based flocculants have received a lot of attention due to their superior advantages over conventional synthetic polymers or inorganic agents. Among natural polymers, polysaccharides show many benefits such as biodegradability, non-toxicity, ability to undergo different chemical modifications, and wide accessibility from renewable sources. The following article provides an overview of bio-based flocculants and their potential application in water treatment, which may be an indication to look for safer alternatives compared to synthetic polymers. Based on the recent literature, a new approach in searching for biopolymer flocculants sources, flocculation mechanisms, test methods, and factors affecting this process are presented. Particular attention is paid to flocculants based on starch, cellulose, chitosan, and their derivatives because they are low-cost and ecological materials, accepted in industrial practice. New trends in water treatment technology, including biosynthetic polymers, nanobioflocculants, and stimulant-responsive flocculants are also considered.

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Section: Bio-based Polysaccharide Flocculants For Water Treatmentmentioning

confidence: 99%

Recent Achievements in Polymer Bio-Based Flocculants for Water Treatment

2020

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“…In reference to prostate cancer, poly(ethylene glycol) (PEG) coated pegylated nanoparticles were accompanied with immense accumulation of nanoparticles at tumor site as compared to un-modified non-stealth nanoparticles [ 40 ]. Moreover, other hydrophilic polymers such as dextrans, heparins, and polyvinylpyrrolidone can also be used to induce stealthing effect [ 41 ]. Therefore, various types of nanomedicines including liposomes, niosomes, lipid hybrid nanoparticles, polymer–drug conjugates, polymeric nanospheres, nanomicelles, metallic nanoparticles, and immune-conjugates have been successfully synthesized and elevated the quality of life of prostate cancer patients [ 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

Nanotreatment and Nanodiagnosis of Prostate Cancer: Recent Updates

et al. 2020

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The fabrication and development of nanomaterials for the treatment of prostate cancer have gained significant appraisal in recent years. Advancements in synthesis of organic and inorganic nanomaterials with charge, particle size, specified geometry, ligand attachment etc have resulted in greater biocompatibility and active targeting at cancer site. Despite all of the advances made over the years in discovering drugs, methods, and new biomarkers for cancer of the prostate (PCa), PCa remains one of the most troubling cancers among people. Early on, effective diagnosis is an essential part of treating prostate cancer. Prostate-specific antigen (PSA) or serum prostate-specific antigen is the best serum marker widely accessible for diagnosis of PCa. Numerous efforts have been made over the past decade to design new biosensor-based strategies for biomolecules detection and PSA miniaturization biomarkers. The growing nanotechnology is expected to have a significant effect in the immediate future on scientific research and healthcare. Nanotechnology is thus predicted to find a way to solve one of the most and long-standing problem, “early cancer detection”. For early diagnosis of PCa biomarkers, different nanoparticles with different approaches have been used. In this review, we provide a brief description of the latest achievements and advances in the use of nanoparticles for PCa biomarker diagnosis.

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“…A flocculation sedimentation method plays an important role in the process of sewage treatment, which mainly makes use of the electrical neutralization, adsorption bridge, and electrostatic force of flocculant to coagulate with colloidal particles, solutes, and suspended solid particles in sewage to form larger floc and then destabilize and settle [1][2][3]. This method can not only reduce the turbidity and chroma of sewage but also remove the water of a variety of macromolecule organic substances, heavy metals, and radioactive substances, which can not only become an independent processing system but also be combined with other processing units as pretreatment, intermediate, or final processing process of sewage [4,5], and is also often used to improve the dehydration properties of sludge [6][7][8]. The flocculation sedimentation method has been widely used in sewage treatment because of its simple process, convenient operation, good treatment effect, and wide application range.…”

Section: Introductionmentioning

confidence: 99%

“…The principle is that hydrophobic groups are embedded in polyacrylamide macromolecular chains containing hydrophilic groups to change and enrich the physical and chemical properties of polymers. Many studies have shown that hydrophobic groups have more effective contact adsorption for organic matter particles in sewage, which can optimize the flocculation performance, reduce the dosage of flocculant, and make sewage treatment more economical [7,17,18].…”

Section: Introductionmentioning

confidence: 99%

Study of Synthesis and Flocculation Properties of New Modified Hydrophobic Organic Polymer P(AM-DM-DMC12)

Guo

Zhang

2019

International Journal of Polymer Science

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A new modified hydrophobic organic polymer P(AM-DM-DMC12) is synthesized by free radical polymerization of three monomers in aqueous solution using a REDOX initiator system. Its structure is characterized by FT-IR and 1H-NMR, the effect of reaction conditions on the product is studied, and the flocculation performance and mechanism are discussed with the aim of wastewater turbidity and COD removal rate. The results showed that the synthesized compounds accorded with the target structure, and the optimum synthetic conditions are as follows: the molar ratio of AM, DM, and DMC12 is 4 : 1 : 1, total mass fraction of monomer is 35%, the mass fraction of redox initiator is 0.06%, and the molecular weight of P(AM-DM-DMC12) is 1.02×107. Moreover, the flocculation effect of P(AM-DM-DMC12) is obviously better than that of PAM, and it has the advantages of short flocculation time, low dosage, and wide application range of pH and has a good industrial application value and prospect.

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Dextran derivatives application as flocculants

Cited by 35 publications

References 66 publications

Recent Achievements in Polymer Bio-Based Flocculants for Water Treatment

Recent Achievements in Polymer Bio-Based Flocculants for Water Treatment

Nanotreatment and Nanodiagnosis of Prostate Cancer: Recent Updates

Study of Synthesis and Flocculation Properties of New Modified Hydrophobic Organic Polymer P(AM-DM-DMC12)

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