Sustainable cationic cellulose for highly efficient flocculation of Kaolin suspension

Li, Zhen; Gong, Wenli; Chen, Xuan; Liu, Lin; Meng, Ranju; Ding, Yanhong; Yao, Juming

doi:10.1007/s10570-021-04211-z

Cited by 8 publications

(8 citation statements)

References 41 publications

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“…Furthermore, at 1050 cm -1 , a strong absorption band appears, which could be a strain vibration of the newly formed ether bond. All of these results indicate that the quaternary ammonium salt groups from CHPTAC were successfully introduced into the cellulose backbone (Song et al 2008;Yan et al 2009;Zhang et al 2016;Kono 2017;Li et al 2021). Scanning electron microscopy (SEM) combined with energy dispersive X-ray spectroscopy (EDX) was used to study the morphology, particle size, and elemental composition of isolated cellulose, as shown in Fig.…”

Section: Resultsmentioning

confidence: 97%

“…The turbidity of the kaolin suspension decreased sharply in the first 5 minutes, with the percentage turbidity removal ranging from 84.87 -88.26% for PAC and on average 92% for cationic celluloses. Compared with the coagulation-flocculation experiment, the percentage of removal was significantly different, which could be due to the higher content of amino groups, thereby accelerating the rate of deposition (Li et al 2021). With increasing sedimentation time from 5 to 60 min, the residual turbidity decreased slowly because the growth of small flocs was slowly detrimental to the settlement.…”

Section: Figmentioning

confidence: 90%

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The synthesis and use of bio-based flocculant from Boehmeria nivea in coagulation-flocculation and direct flocculation of kaolin suspension

Fauzani

Notodarmojo

Handajani

et al. 2023

Preprint

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The synthesis and modification of cellulose from Boehmeria nivea into a cationic bio-based flocculant was performed. In the first stage of research, cellulose was isolated from the bast fiber of Boehmeria nivea. Second, the modification of cellulose into cationic cellulose was carried out by reaction using 3-chloro-2-hydroxypropyl-trimethylammonium chloride (CHPTAC). Cellulose and cationic cellulose were tested as bio-based flocculants for their flocculation ability with synthetic water samples using 5 g/L of kaolin suspension with turbidity as the test parameter. Data analysis was performed by statistical analysis using one-way ANOVA and Duncan's multiple range test. Studies showed that the use of Cellulose as a bio-based flocculant in the coagulation-flocculation process with polyaluminum chloride (PAC) as a coagulant statistically increased the efficiency of turbidity removal, up to 99.17%, whereas the direct flocculation process, i.e., without the use of coagulant, had a turbidity removal efficiency of 98.91% with 60 minutes of sedimentation time. The use of cationic cellulose showed promising results as a bio-based flocculant in the direct flocculation process compared to PAC, with a shorter sedimentation time.

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Section: Resultsmentioning

confidence: 97%

Section: Figmentioning

confidence: 90%

The synthesis and use of bio-based flocculant from Boehmeria nivea in coagulation-flocculation and direct flocculation of kaolin suspension

Fauzani

Notodarmojo

Handajani

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…The turbidity of the kaolin suspension decreased sharply in the rst 5 minutes, with the percentage turbidity removal ranging from 84.87 -88.26% for PAC and on average 92% for cationic celluloses. Compared with the coagulation-occulation experiment, the percentage of removal was signi cantly different, which could be due to the higher content of amino groups, thereby accelerating the rate of deposition (Li et al 2021). With increasing sedimentation time from 5 to 60 min, the residual turbidity decreased slowly because the growth of small ocs was slowly detrimental to the settlement.…”

Section: Duncan's Multiple Range Test Analysis In Tablementioning

confidence: 92%

“…Other kaolin particles can be joined together by this cellulose-kaolin complex to create larger ocs. Through capture and sweep effects, largesized ocs simultaneously further trap small ocs and residual kaolin particles in the system, which can all result in ideal rate values for particle sedimentation (Li et al 2015;Li et al 2021).…”

Section: Duncan's Multiple Range Test Analysis In Tablementioning

confidence: 99%

The synthesis and use of α-cellulose and cationic cellulose from Boehmeria nivea as bio-flocculants in flocculation of kaolin suspension

Fauzani

Notodarmojo

Handajani

et al. 2022

Preprint

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The synthesis and modification of α-cellulose from Boehmeria nivea into a cationic bioflocculant was performed. In the first stage of research, α-cellulose was isolated from the bast fiber of Boehmeria nivea. Second, the modification of α-cellulose into cationic cellulose was carried out by reaction using 3-chloro-2-hydroxypropyl-trimethylammonium chloride (CHPTAC). α-cellulose and cationic cellulose were tested as bioflocculants for their flocculation ability with synthetic water samples using 5 g/L of kaolin suspension with turbidity as the test parameter. Data analysis was performed by statistical analysis using one-way ANOVA and Duncan's multiple range test. Studies showed that the use of α-cellulose as a bioflocculant in the coagulation-flocculation process with polyaluminum chloride (PAC) as a coagulant statistically increased the efficiency of turbidity removal, up to 99.17%, whereas the direct flocculation process, i.e., without the use of coagulant, had a turbidity removal efficiency of 98.91% with 60 minutes of sedimentation time. The use of cationic cellulose showed promising results as a bioflocculant in the direct flocculation process compared to PAC, with a shorter sedimentation time.

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“…For example, PAM degradation products (acrylamide) can damage the nervous systems of humans and animals. 7 Synthetic organic polymeric flocculants and inorganic flocculants have been gradually replaced by a variety of environmentally friendly natural polymer flocculants such as starch 8 and cellulose 9 to cope with these problems. These natural polymers have abundant raw material availability and are nontoxic, readily biodegradable, and easy to modify.…”

Section: Introductionmentioning

confidence: 99%

Amine-Modified Chitosan Flocculant Synthesized via Single-Mode Microwave Method for Laundry Wastewater Treatment

Zhao

Tian

et al. 2022

ACS Omega

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In this study, an effective and environmentally friendly polyaminated cross-linked chitosan (M-PACTS) flocculant was successfully synthesized via circular focus single-mode microwave synthesizer irradiation. Epichlorohydrin and tetraethylenepentamine were used as the cross-linking agent and active cationic reagent, respectively. The same formation was used to prepare cationic lightly cross-linked chitosan (C-PACTS) via the conventional heating method. The flocculant was characterized using Fourier transform infrared spectroscopy, X-ray diffraction analysis, and scanning electron microscopy. The flocculation capability of C-PACTS and M-PACTS was compared using laundry wastewater as a model pollutant. The pH, PACTS dosage, temperature, stirring rate, stirring time, and setting time were systematically investigated. The experimental results showed that circular focus single-mode microwave synthesizer irradiation was a more efficient method to modify chitosan. M-PACTS exhibited a higher capacity for turbidity and chemical oxygen demand (COD Cr ) removal. Under optimal conditions, the removal rate values of M-PACTS were up to 96% (turbidity) and 78% (COD Cr ). The proposed PACTS is suitable for treatment of polluted wastewater in an eco-friendly manner without causing secondary pollution.

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Sustainable cationic cellulose for highly efficient flocculation of Kaolin suspension

Cited by 8 publications

References 41 publications

The synthesis and use of bio-based flocculant from Boehmeria nivea in coagulation-flocculation and direct flocculation of kaolin suspension

The synthesis and use of bio-based flocculant from Boehmeria nivea in coagulation-flocculation and direct flocculation of kaolin suspension

The synthesis and use of α-cellulose and cationic cellulose from Boehmeria nivea as bio-flocculants in flocculation of kaolin suspension

Amine-Modified Chitosan Flocculant Synthesized via Single-Mode Microwave Method for Laundry Wastewater Treatment

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