Synthesis and application of polyacrylamide grafted magnetic cellulose flocculant for palm oil wastewater treatment

Noor, Mohamed Hizam Mohamed; Ngadi, Norzita; Inuwa, Ibrahim Mohammed; Lawal, A. O.; Nawawi, Mohd

doi:10.1016/j.jece.2020.104014

Cited by 28 publications

(10 citation statements)

References 39 publications

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“…The studies showed that graft copolymers of cellulose can be an effective flocculant satisfactorily reducing water turbidity. According to numerous reports, this polysaccharide can be considered as a good material to produce environmentally friendly flocculants because of its physical characteristics, chemical reactivity, and flocculation efficacy [5,92,147,148].…”

Section: Cellulose and Its Derivativesmentioning

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: Cellulose and Its Derivativesmentioning

confidence: 99%

Recent Achievements in Polymer Bio-Based Flocculants for Water Treatment

2020

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“…Regard must be paid to unmodified chitin used as a flocculant. In terms of its qualities, chitin is not inferior to aluminum sulphate as a coagulant (Noor et al, 2020;. Moreover, it is stable in all pH ranges .…”

Section: Flocculants Based On Chitosanmentioning

confidence: 98%

“…A water-soluble chitosan derivative has been developed for removing the dye (reactive brilliant red) from textile wastewater (Noor et al, 2020). The modification of chitosan is based on the esterification reaction with a cationic agent (2,4-bis(dimethylamino)-6-chloro-(1,3,5)-triazine).…”

Section: Flocculants Based On Chitosanmentioning

confidence: 99%

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Использование Флокулянтов Для Очистки Сточных Вод

Ulrikh¹,

Баркова²

2023

Ecosystem Transformation

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Polymeric flocculants are used to accelerate the separation of solid and liquid phases in the treatment of drinking water and wastewater. Recently, much attention has been paid to flocculants, both synthetic and biobased, due to their advantages for wastewater treatment processes. Flocculants have many advantages such as biodegradability, non-toxicity, the ability to undergo various chemical modifications, and wide availability from renewable sources. This article provides a review of synthetic and biobased flocculants and lists their potential applications in water treatment. Based on the up-to-date data, a new approach is proposed for searching for modified and grafted flocculants, flocculation mechanisms, test methods, and factors influencing this process. Particular attention is paid to flocculants based on chitosan and its derivatives, since they are cheap and environmentally friendly materials used in industrial practice. Keywords: polymers, chitosan, flocculation, bridging, neutralization, environment Полимерные флокулянты используются для ускорения процессов разделения твердой и жидкой фаз при очистке питьевой воды и сточных вод. В последнее время большое внимание уделяется флокулянтам как на синтетической, так и на биологической основе. Флокулянты обладают рядом преимуществ: биоразлагаемостью, нетоксичностью, способностью подвергаться различным химическим модификациям и широкой доступностью (в том числе флокулянтов, полученных из возобновляемых источников). В статье представлен обзор флокулянтов на синтетической и биологической основах, а также их потенциального применения при очистке воды. Основываясь на сведениях, отраженных в новейшей литературе, описан новационный подход к поиску модифицированных и привитых флокулянтов, механизмов флокуляции, методов испытаний, установлены факторы, влияющие на протекание этого процесса. Особое внимание уделено флокулянтам на основе хитозана и его производных, поскольку они являются дешевыми и экологичными материалами, используемыми в промышленной практике.

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“…Cellulose, as the most abundant natural bioresources, has great potential for the removal of various pollutants due to its marvelous properties of biodegradability,nontoxicity, cheap and widely available (Salehizadeh et al 2018;Shak et al 2018;Noor et al 2020).It is well known that functional modi cation of cellulose can be easilyobtained, due to itssu cient hydroxyl groups on the surface.Thereby, a series of anionic groups such as carboxyl groups, phosphategroups, andsulfo groups, were introduced to improve the removal ability of cellulose for cationic dyes or heavy metal ions (Rodríguez et al 2011;Fu et al 2017;Wang et al 2020). For example, Li et al )successfully prepared carboxylatedcellulose lters by TEMPO-mediated oxidation and presented excellent adsorption capacity for cationic dyes and heavy metal ions.Ge et al (Ge et al 2016)andZhang et al (Zhang et al 2016) prepared cationic cellulose ber by introducing polyethyleneimine (PEI) for the removal of heavy metal ions.Besides,Dicarboxyl cellulose occulant was manufactured by periodate oxidation for the removal of kaolin suspension assisted with CaCl 2 as a coagulant .However, to the best of our knowledge, the employment of cationic cellulose as bio-occulantfor the directremoval of suspended particles from wastewater has been rarely reported.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Cationic Cellulose for Highly Efficient Flocculation of Suspended Particles

Gong

Chen

et al. 2021

Preprint

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Sustainable, cationic cellulose bio-flocculants with various amino group contents were successfully prepared by a feasible chemical crosslinking with polyethyleneimine (PEI). The flocculation performances of diverse PEI-grafting cellulose (CE-PEI)were evaluated topurify sewage sludge treatment. Further, the preparation conditions and flocculation mechanismof CE-PEI were investigated. Benefiting from the high surface positive charges and the supramolecular structure of PEI, the results indicate that CE-PEI could remove the turbid Kaolin suspension effectively. The efficiency of CE-PEI for removing the turbid in Kaolin suspension is 98.2%.Flocculation kinetic results indicated that charge neutralization was the dominant mechanism for the flocculation process. And then, the small Kaolin particles agglomerate together to form large flocs by the function of adsorbing, gathering, and enwrapping. Thus, this work not only exploits a promising application of cellulose as a bio-flocculantbut also provides a feasible approach to efficiently purify high turbidity wastewater.

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Synthesis and application of polyacrylamide grafted magnetic cellulose flocculant for palm oil wastewater treatment

Cited by 28 publications

References 39 publications

Recent Achievements in Polymer Bio-Based Flocculants for Water Treatment

Recent Achievements in Polymer Bio-Based Flocculants for Water Treatment

Использование Флокулянтов Для Очистки Сточных Вод

Sustainable Cationic Cellulose for Highly Efficient Flocculation of Suspended Particles

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