Nano aluminum-based hybrid flocculant: Synthesis, characterization, application in mine drainage, flocculation mechanism

Lin, Zhouchen; Zhang, Chunhui; Hu, Yu‐Feng; Su, Peidong; Quan, Bingxu; Li, Xuezhi; Zhang, Zhao

doi:10.1016/j.jclepro.2023.136582

Cited by 7 publications

(7 citation statements)

References 68 publications

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“…Figure 2 shows the FTIR spectra of AL, AM, MAPTAC, and AL-g-PAMA. Compared to the FTIR spectrum of AL, that of AL-g-PAMA showed an amino group (N-H) stretching vibrational peak at 3196 cm −1 that was not present before grafting; this amino group was attributed to the introduction of the amide group (–NH 2 ) in AM [ 25 ]. The absorption peak at 2935 cm −1 corresponded to the asymmetric stretching vibration of the hypomethyl group (–CH 2 ) [ 26 ].…”

Section: Resultsmentioning

confidence: 99%

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Preparation of a Lignin-Based Cationic Flocculant and Its Application in Kaolin Suspension Treatment

Li,

Yao,

Dong

et al. 2024

Polymers

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The preparation of an environmentally friendly and efficient flocculant for solid-liquid separation in industrial wastewater is highly important. In this study, a novel cationic flocculant (AL-g-PAMA) was synthesized by a thermal initiation method using alkali lignin (AL) as the main chain and acrylamide (AM) and methacrylamido propyl trimethyl ammonium chloride (MAPTAC) as the grafted side chains. The structure, thermal stability, and surface morphology of the copolymers were investigated by various characterization methods. The results indicated the successful synthesis of AL-g-PAMA. AL-g-PAMA was applied to improve solid-liquid separation in kaolin suspensions. The results showed that AL-g-PAMA had excellent flocculation-sedimentation and dewatering efficiency. When the dosage of AL-g-PAMA #5 was 600.0 g/t(s), the thickness of the compressed layer was 2.2 cm, the floc settling velocity was 24.1 cm/min, and the transmittance of the supernatant was 84.0%. The moisture content of the filter cake decreased from 55.0% to 43.4% after treatment with AL-g-PAMA #5. The results of zeta potential and focused beam reflectance measurement (FBRM) analysis indicated that bridging and electroneutralization were the main flocculation mechanisms. Therefore, this study extends the potential for using lignin as a bioflocculant and provides a feasible approach to efficiently purify high-turbidity wastewater.

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Section: Resultsmentioning

confidence: 99%

“…The SEM images demonstrated that AL-g-PAMA had a large specific surface area, increasing the possibility that it would make contact with kaolin particles. This feature somewhat enhanced the netting and sweeping effect of AL-g-PAMA on the suspended particles; therefore, the generated flocs could settle quickly [ 25 , 31 ].…”

Section: Resultsmentioning

confidence: 99%

Preparation of a Lignin-Based Cationic Flocculant and Its Application in Kaolin Suspension Treatment

Li,

Yao,

Dong

et al. 2024

Polymers

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“…The charge property of the occulant has an important inuence on the occulation effect and mechanism. 58 Studies show that the change of zeta potential means the occulation dominated by general charge neutralization or adsorption bridging. 59 Fig.…”

Section: Flocculation Properties Of Cs-ammentioning

confidence: 99%

Synthesis of chitosan-based flocculant by dielectric barrier discharge modification and its flocculation performance in wastewater treatment

Wu,

Shen,

Zhao

et al. 2024

RSC Adv.

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“… 63 The flocs after flocculation showed a floc cross-linking structure, which further also indicated that the presence of adsorption bridging and precipitation net trapping causes the particles to interact with each other and eventually agglomerate and sink. 50 …”

Section: Investigations On Mechanismsmentioning

confidence: 99%

“…48 Furthermore, the treatment efficiency of turbidity of PAFAC was compared with other occulants reported in the previous research. 21,[49][50][51][52][53][54][55] As shown in Table 4, it could be found that PAFAC was feasible for the synthesis of occulant, which showed good performance for the removal of turbidity.…”

Section: Characterization Of Pafacmentioning

confidence: 99%

Coal gasification crude slag based complex flocculants by two-step acid leaching process: synthesis, flocculation and mechanisms

Pan,

Sun,

Shen

et al. 2024

RSC Adv.

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Nano aluminum-based hybrid flocculant: Synthesis, characterization, application in mine drainage, flocculation mechanism

Cited by 7 publications

References 68 publications

Preparation of a Lignin-Based Cationic Flocculant and Its Application in Kaolin Suspension Treatment

Preparation of a Lignin-Based Cationic Flocculant and Its Application in Kaolin Suspension Treatment

Synthesis of chitosan-based flocculant by dielectric barrier discharge modification and its flocculation performance in wastewater treatment

Coal gasification crude slag based complex flocculants by two-step acid leaching process: synthesis, flocculation and mechanisms

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