Characterisation and coagulation performance of an inorganic coagulant—poly-magnesium-silicate-chloride in treatment of simulated dyeing wastewater

Wei, Yanxin; Ding, Aimin; Liu, Dong; Tang, Yongqiang; Yu, Faquan; Dong, Xiongzi

doi:10.1016/j.colsurfa.2015.01.066

Cited by 59 publications

(26 citation statements)

References 23 publications

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“…The peak near 604 cm −1 was attributed to Si-O bending vibration, and the peak near 1200 cm −1 was attributed to the vibration of Mn-O-Si, Fe-O-Si and Al-O-Si [21]. The reason why the absorption peaks of Mn-PSAFS, Zn-PSAFS and Mg-PSAFS from 604 cm −1 to 1200 cm −1 were distinctly different from those of PSAFS, especially around 1410 cm −1 where only PSAFS had a distinct peak, may have been due to the complex reaction of the modified metal ions with polysilicic acid near the change point [26].…”

Section: Ir Spectroscopy Analysis Resultsmentioning

confidence: 97%

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Treatment of Oil-Contaminated Water by Modified Polysilicate Aluminum Ferric Sulfate

You

Zhang

et al. 2018

Processes

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In this experiment, a variety of inorganic materials were simply compounded with Polysilicate Aluminum Ferric Sulfate (PSAFS) to treat emulsified oil-contaminated water. Manganese sulfate (MnSO 4 ), magnesium sulfate (MgSO 4 ), and zinc sulfate (ZnSO 4 ) were selected as the materials to modify PSAFS in order to obtain a coagulant with good flocculation performance. During the preparation of modified PSAFS, metal manganese, magnesium, and zinc were introduced for modification, and four factors were used to optimize the best proportion of modifiers and PSAFS. The results showed that the order of demulsification and oil-removal ability is as follows: Mn-PSAFS (Mn-modified PSAFS) > Zn-PSAFS (Zn-modified PSAFS) > Mg-PSAFS (Mg-modified PSAFS) > PSAFS. Modified PSAFS was characterized by infrared spectroscopy (IR) and a Scanning Electron Microscope (SEM). In the range of 604 cm −1 to 1200 cm −1 , due to the complexation reaction between metal ions and polysilicic acid, the absorption peaks of the modified PSAFS and PSAFS were significantly different. SEM results revealed that the particles of the spatial network structure were fibrous and arranged more closely (0.5 mm × 50.0 mm) than others. This study provided that the modified PSAFS had good potential application in treating emulsified oily wastewater in the future.

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Section: Ir Spectroscopy Analysis Resultsmentioning

confidence: 97%

“…Different from other coagulants, Zn-PSAFS also had a chain network structure, and spherical particles were formed on the flaky particles. The introduction of zinc helped the coagulant form more microfloc structures so that it could enhance PSAFS's catching ability [26].…”

Section: Sem Resultsmentioning

confidence: 99%

Treatment of Oil-Contaminated Water by Modified Polysilicate Aluminum Ferric Sulfate

You

Zhang

et al. 2018

Processes

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“…More importantly, all of the representative peaks of PFeNPs11 showed a small shift, which was caused by the introduction of electron-donating groups provided from SiAAl species. 21 The medium peaks in the range 1650-1620 cm 21 (1620 cm 21 for PFeNPs11 and 1650 cm 21 for the FeNPs and PSA) and 1460 cm 21 were attributed to the bending and stretching vibrations of AOH. 21 The medium peaks in the range 1650-1620 cm 21 (1620 cm 21 for PFeNPs11 and 1650 cm 21 for the FeNPs and PSA) and 1460 cm 21 were attributed to the bending and stretching vibrations of AOH.…”

Section: Resultsmentioning

confidence: 98%

Evaluation of oilfield‐produced water treated with a prepared magnetic inorganic polymer: Poly(silicate aluminum)/magnetite

Cai

Zhang

2017

J of Applied Polymer Sci

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In this study, novel coagulant poly(silicate aluminum)/Fe 3 O 4 nanoparticles (PFeNPs) were prepared via magnetic iron oxide nanoparticles (FeNPs) modified by poly(silicate aluminum) (PSA). The physiochemical properties of the PFeNPs were investigated with Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and f-potential metric analysis. The effect of the aging time on the Al distribution of the PFeNPs was analyzed by the Al-Ferron timed complex colorimetric method. Oilfield-produced water was used for the assessment of the coagulation performances. The fractal dimensions, formation, breakage, and regrowth of the flocs were studied in turn. The experimental results show that the PFeNPs exhibited a porous layer of a net structure, and the PSA grafted onto the PFeNPs via SiAOAFe enhanced the positive charge of the FeNPs. Meanwhile, the coagulation performance of the PFeNPs on total organic carbon, the turbidity, and the calcium removal were beyond 98%. In addition, the moisture content of the flocs derived from the PFeNPs was 68.7% (it is normally > 98%). We found that the compactness of the flocs derived from the PFeNPs was far greater than those of PSA. This will provide new sight into the preparation of magnetic singlephase inorganic polymer coagulants.

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“…It is obvious that the surface of PFC with long bars is ragged, which is a less favorable structure for flocculation. The micrograph of PDM shows a long chain‐like structure, promoting the coagulation process of adsorption and bridging performance . After the copolymerization reaction, the microstructure of PFC‐PDM was regular and cross‐linked, which indicated that PDM was grafted onto the PFC.…”

Section: Resultsmentioning

confidence: 99%

Preparation, characterization and flocculation performance of the inorganic–organic composite coagulant polyferric chloride and polydimethyldiallylammonium chloride

Wang

Shui

Liu

et al. 2016

J of Chemical Tech & Biotech

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BACKGROUND A novel composite coagulant was prepared from polyferric chloride (PFC) and polydimethyldiallylammonium chloride (PDM) using two different methods: co‐polymerization and composite polymerization. In this investigation, effects of preparation parameters such as PDM/Fe weight ratio (P) and PDM molecular weight on zeta potential and Fe (III) species distribution were also studied. In addition, the effects of those parameters on coagulation efficiency of prepared coagulants in treating drilling wastewater was evaluated and the synthetic coagulants were characterized in terms of typical properties and morphological analysis. RESULTS The improvements in preparation parameters were better charge neutralization capacity and the highest content of active Fe (III) coagulating species due to the presence of cationic polymer. The optimal coagulation efficiency was obtained at a PDM/PFC weight ratio of 0.3 and PDM molecular weight of 200–350 kDa. PFC‐PDM turned out to be a physical mixture according to Fourier transform infrared (FTIR) analysis, although the coagulation behavior was changed after the PFC/PDM composite was formed. Morphology analysis displayed an irregular surface and multi‐branched structure for PFC‐PDM. CONCLUSION The novel composite coagulant PFC‐PDM exhibited a superior flocculation performance and obtained favorable coagulation behavior with more compact flocs and a much better sludge compressibility compared with PFC alone. © 2016 Society of Chemical Industry

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Characterisation and coagulation performance of an inorganic coagulant—poly-magnesium-silicate-chloride in treatment of simulated dyeing wastewater

Cited by 59 publications

References 23 publications

Treatment of Oil-Contaminated Water by Modified Polysilicate Aluminum Ferric Sulfate

Treatment of Oil-Contaminated Water by Modified Polysilicate Aluminum Ferric Sulfate

Evaluation of oilfield‐produced water treated with a prepared magnetic inorganic polymer: Poly(silicate aluminum)/magnetite

Preparation, characterization and flocculation performance of the inorganic–organic composite coagulant polyferric chloride and polydimethyldiallylammonium chloride

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