Polyacrylamide grafted cellulose as an eco-friendly flocculant: Efficient removal of organic dye from aqueous solution

Yang, Xiaogang; Chen, Kexin; Zhang, Yong; Liu, Hongyi; Chen, Wei; Yao, Juming

doi:10.1007/s12221-017-1216-4

Cited by 15 publications

(3 citation statements)

References 26 publications

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“…Meanwhile, the selection of organic flocculants for purifying dyeing wastewater will produce less sludge, and the sludge produced will be easier to decompose normally than the sludge produced with the use of inorganic flocculants. [22][23][24][25][26][27][28][29] However, it will take a relatively longer time for the organic cationic flocculants to interact with the anionic dyes in water (to realize the efficient purification of dyeing wastewater). Thus, it is still necessary to further improve the application performances of organic flocculants for realizing the efficient, green, and economic purification of dyeing wastewater.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a new polyunsaturated cationic crosslinker by a new micro‐polycondensation reaction as a critical modifier of polycationic flocculant for purifying dyeing wastewater

Yang

Bai

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: This work explored a complete evolutionary process, from discovering a new reaction and synthesizing a new crosslinker intermediate, to product application in the purification of dyeing wastewater.RESULTS: A new micro-polycondensation reaction between propylacryloyloxypropyldimethylamine and epichlorohydrin was first observed, forming a new polyunsaturated cationic crosslinker (poly (2-hydroxypropylacryloyloxypropyldimethylammonium chloride) (PHPAC), abbreviating HPAC unit as the repeating unit); meanwhile, this new PHPAC crosslinker was just a critical modifier of a polycationic flocculant. When the thimbleful of PHPAC crosslinkers containing only 0.2% molar percentage of HPAC units were incorporated into a polycationic skeleton of poly (acryloyloxyethyltrimethylammonium chloride) (PDAC), the application properties of the obtained modified product (known as SC-PDAC) were greatly improved compared to the unmodified product of PDAC. The cost for preparing the modified product of SC-PDAC was hardly increased because the quantity of HPAC modifier used was minimal. The multi-dimension flocculation interactions of SC-PDAC with the anionic dyes allowed the SC-PDAC to realize a more efficient purification of dyeing wastewater than the unmodified PDAC. The obtained SC-PDAC could remove 99.10% of the dyes Reactive Scarlet 3BS and 96.69% of the dyes Methyl Blue when used for purifying the dyeing wastewater. In real engineering applications, the further complex interactions of SC-PDAC with certain inorganic flocculants and coagulant aids would allow the flocs to be quickly formed, condensed, and aggregated, so as to realize a fast purification of dyeing wastewater within 10 s. The successful implementation of a simulation amplification experiment for treating a 4.0 L dye solution further confirmed that the SC-PDAC had good potential to be applied in real water treatment engineering. CONCLUSIONS: Therefore, as expected, it could be regarded as an economic and facile modification way to obtain the efficient organic cationic flocculant by selecting the PHPAC crosslinker as a critical modifier.

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Section: Introductionmentioning

confidence: 99%

Synthesis of a new polyunsaturated cationic crosslinker by a new micro‐polycondensation reaction as a critical modifier of polycationic flocculant for purifying dyeing wastewater

Yang

Bai

et al. 2021

J of Chemical Tech & Biotech

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“…Therefore, the wastewater treatment technologies that removing MB efficiently in water has attracted much attention 9,10 . In recent years, various technologies including ion exchange, 11 flocculation, 12 adsorption, 13 membrane filtration, 14 electrochemical treatment, 15 and photocatalytic degradation 16,17 have been developed to treat MB wastewater. Compared with other methods, the photocatalytic degradation technology with semiconductor oxide as the catalyst is more suitable for treating MB wastewater due to its high efficiency and low cost, showing a broad application prospect.…”

Section: Introductionmentioning

confidence: 99%

A novel cellulose‐derived carbon aerogel@Na₂Ti₃O₇ composite for efficient photocatalytic degradation of methylene blue

Liu

Chen

et al. 2021

J of Applied Polymer Sci

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A scale‐up and sustainable method was developed to fabricate novel photocatalyst cellulose‐derived carbon aerogel@Na2Ti3O7 composite (CAT) by in situ growth of Na2Ti3O7 nanowhisker on the surfaces of fibers. With a three‐dimensional (3D) mesoporous network interconnected structure and a high specific surface area (248.92 m2/g), CAT exhibited excellent photocatalytic activity and methylene blue (MB) removal rate (98.3%). The photocatalytic experimental results showed that the CAT could degrade MB in the aqueous solution within 90 min. Compared with most reported catalysts, CAT exhibited a higher MB removal rate and shorter catalytic time. Therefore, the photocatalyst CAT based on environmentally friendly and low‐cost cellulose displayed great application potential in the degradation of MB.

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“…It connects loose particles and favours the formation of large aggregates. As a result, the erosion phenomena are limited or inhibited [32][33][34][35][36][37][38][39][40][41][42][43][44]. Soil flocculants can also bind chemical compounds present in soil including heavy metals.…”

Section: Introductionmentioning

confidence: 99%

Anionic polyacrylamide influence on the lead(II) ion accumulation in soil – the study on montmorillonite

Szewczuk-Karpisz

Wiśniewska

2020

J Environ Health Sci Engineer

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Purpose Polymeric substances, as soil conditioners, limit the erosion process as well as improve the soil structure. The same macromolecular compounds may influence the heavy metal accumulation in soil environment. The main aim of this study was investigation of anionic polyacrylamide (AN PAM) effect on the lead(II) ion sorption on the montmorillonite surface. The effects of Pb(II) ion concentration, sequence of heavy metal and anionic polymer addition into the system as well as anionic group content in the PAM macromolecules were also studied. Materials and methods The study was performed on montmorillonite (clay mineral). Two types of polymers were used: AN PAM 5% and AN PAM 30% containing 5% and 30% of carboxylic groups, respectively. The adsorbed amounts of Pb(II) ions or AN PAM on the solid were determined spectrophotometrically. Electrokinetic properties of the examined systems were established using potentiometric titration and microelectrophoresis method. The montmorillonite aggregation without and with selected substances was described based on the sedimentation study. Results At pH 5 the Pb(II) adsorbed amount on montmorillonite equaled 0.05 mg/m 2 (for the initial concentration 10 ppm). Anionic polyacrylamide increased this value significantly (it was 0.11 mg/m 2 with AN PAM 5% and 0.11 mg/m 2 with AN PAM 30%). The lead(II) ions presence causes a slight increase of the anionic PAM adsorption on the montmorillonite surface. For example, for the initial polymer concentration 100 ppm, the AN PAM 5% adsorbed amount without Pb(II) equaled 0.49 mg/m 2 , whereas with Pb(II)-0.57 mg/m 2. What is more, anionic polyacrylamide and lead(II) ions affected electrokinetic properties and stability of the montmorillonite suspension. Conclusions Anionic polyacrylamide makes the Pb(II) accumulation on the montmorillonite surface larger and, as a consequence, reduces the Pb(II) availability to organisms. Therefore, this macromolecular compound can certainly be used to remediate soils contaminated with heavy metals.

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Polyacrylamide grafted cellulose as an eco-friendly flocculant: Efficient removal of organic dye from aqueous solution

Cited by 15 publications

References 26 publications

Synthesis of a new polyunsaturated cationic crosslinker by a new micro‐polycondensation reaction as a critical modifier of polycationic flocculant for purifying dyeing wastewater

Synthesis of a new polyunsaturated cationic crosslinker by a new micro‐polycondensation reaction as a critical modifier of polycationic flocculant for purifying dyeing wastewater

A novel cellulose‐derived carbon aerogel@Na₂Ti₃O₇ composite for efficient photocatalytic degradation of methylene blue

Anionic polyacrylamide influence on the lead(II) ion accumulation in soil – the study on montmorillonite

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Polyacrylamide grafted cellulose as an eco-friendly flocculant: Efficient removal of organic dye from aqueous solution

Cited by 15 publications

References 26 publications

Synthesis of a new polyunsaturated cationic crosslinker by a new micro‐polycondensation reaction as a critical modifier of polycationic flocculant for purifying dyeing wastewater

Synthesis of a new polyunsaturated cationic crosslinker by a new micro‐polycondensation reaction as a critical modifier of polycationic flocculant for purifying dyeing wastewater

A novel cellulose‐derived carbon aerogel@Na2Ti3O7 composite for efficient photocatalytic degradation of methylene blue

Anionic polyacrylamide influence on the lead(II) ion accumulation in soil – the study on montmorillonite

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A novel cellulose‐derived carbon aerogel@Na₂Ti₃O₇ composite for efficient photocatalytic degradation of methylene blue