Coagulation of soil suspensions containing nonionic or anionic surfactants using chitosan, polyacrylamide, and polyaluminium chloride

Chatterjee, Tania; Chatterjee, Sudipta; Lee, Dae S.; Lee, Min Won; Woo, Seung Han

doi:10.1016/j.chemosphere.2009.03.012

Cited by 32 publications

(14 citation statements)

References 34 publications

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“…It is due to these factors that many researchers are searching for a cleaner and more environmentally friendly coagulant (biocoagulant) originating from natural resources such as plants, animals and microorganism. To date, several biocoagulants have shown good ability for coagulating action, including Moringa olefiera [5,7], chitosan [8][9][10], cactus [11,12] and starch [13].…”

Section: Introductionmentioning

confidence: 99%

A preliminary study onJatropha curcasas coagulant in wastewater treatment

Abidin

Ismail

Yunus

et al. 2011

Environmental Technology

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Many coagulants, mainly inorganic, are widely used in conventional water and wastewater treatment. Recent studies reported the occurrence of some chronic diseases associated with residual coagulant in treated wastewater. The use of alternative coagulants which are biodegradable and environmentally friendly could alleviate the problem associated with these diseases. This work investigates the capability of Jatropha curcas seed and presscake (the residue left after oil extraction) to reduce the turbidity of wastewater through coagulation. The coagulant was prepared by dissolving Jatropha curcas seed and presscake powder into solution. Then jar tests were conducted on kaolin solution as the model wastewater. The Jatropha seed was found to be an effective coagulant with more than 96% of turbidity removal at pH 1-3 and pH 11-12. The highest turbidity removal was recorded at pH 3 using a dosage of 120 mg/L. The flocs formed using Jatropha were observed to be bigger and to sediment faster when compared with flocs formed using alum. The turbidity removal was high (>98%) at all turbidities (100 NTU to 8000 NTU), suggesting its suitability for a wide range of industrial wastewater. The performance of Jatropha presscake after extraction of oil was also comparable to the fresh seed and alum at highly acidic and highly alkaline conditions. The addition of Jatropha did not significantly affect the pH of the kaolin samples after treatment and the sludge volume produced was less in comparison to alum. These results strongly support the use of Jatropha curcas seed and presscake as a potential coagulant agent.

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Section: Introductionmentioning

confidence: 99%

A preliminary study onJatropha curcasas coagulant in wastewater treatment

Abidin

Ismail

Yunus

et al. 2011

Environmental Technology

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“…Chitosan is a highly biodegradable material (Hirano et al 1991) and is currently widely used in ecologically friendly fertilizers and biopesticides in agriculture and horticulture (Linden et al 2000). Furthermore, because of its biocompatible, antibacterial, and polyelectrolytic characteristics (Kobayashi et al 1996), chitosan is used in various other industrial applications including water treatment, chromatography, as additives for cosmetics, textile treatment for antimicrobial activity (Shin et al 1999), novel fibers for textiles, photographic papers, biodegradable films, biomedical devices, and microcapsule implants for the controlled release in drug delivery (Bartkowiak and Hunkeler 1999, Sezer and Akbuga 1999, Suzuki et al 1999 In civil engineering, chitosan has been used to remove wastes in groundwater by flocculation (Chatterjee et al 2009 or in coating processes (Gupta et al 2013). Chitosan binds fine particles in suspension, and also removes phosphorus, heavy metals, and oils from water.…”

Section: Chitosanmentioning

confidence: 99%

“…Recently, organic biopolymers are actively attempted in various environmental and geotechnical engineering purposes (Chang and Cho 2012, Chang et al 2015a, b, c, d, 2016a .Chitosan, an amino-biopolymer, has received a great deal of attention as a bio-flocculant in water treatment processes (Chatterjee et al 2009, Roussy et al 2005. However, because the amino groups of chitosan do not protonate at high pH, chitosan is insoluble in aqueous or alkali solvents.…”

Section: Introductionmentioning

confidence: 99%

ε-polylysine biopolymer for coagulation of clay suspensions

Kwon¹,

Im²,

Chang³

et al. 2017

Geomech. Eng.

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The coagulation or flocculation of cohesive clay suspensions is one of the most widely used treatment technologies for contaminated water. Flocculated clay can transport pollutants and nutrients in ground water. Coagulants are used to accelerate these mechanisms. However, existing coagulants (e.g., polyacrylamide, polyaluminum chloride) are known to have harmful effects in the environment and on human health. As an alternative, eco-friendly coagulant, this study suggests ε-polylysine, a cationic biopolymer fermented by Streptomyces. A series of sedimentation experiments for various ε-polylysine concentrations were performed, and the efficiency of sedimentation with ε-polylysine was estimated by microscopic observation and light absorbance measurements. Two types of sedimentation were observed in the experiments: accumulation sedimentation (at 0.15%, 0.20%, 0.25% ε-polylysine) and flocculation sedimentation (at 0%, 0.1%, 0.5%, 1.0%, 2.0% ε-polylysine). These sedimentation types occur as a result of the concentration of counter ions. Additionally, the performance of εpolylysine was compared with that of a previously used environmentally friendly coagulant, chitosan. The obtained results indicate that flocculation sedimentation is appropriate for contamination removal and that ε-polylysine functions more efficiently for clay removal than chitosan. From the experiments and analysis, this paper finds that polylysine is an alternative eco-friendly coagulant for removing chemical contaminants in groundwater.

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“…Recent work holds the promise of alternative and cheaper production as well as development of more efficient polyaluminum chloride coagulants in the foreseeable future. Work is also under way to identify and evaluate naturally occurring coagulants as greener substitutes for conventional coagulants and to improve access to coagulants in developing countries (Fabris et al, 2010; Chatterjee et al, 2009; Kalibbala et al, 2009; Nkurunziza et al, 2009; Miller et al, 2008; Rizzo et al, 2008).…”

Section: Evolving Coagulation and Flocculation Rolesmentioning

confidence: 99%

Recent Research Every Utility Manager Needs to Know About

Speight¹,

Via²

2011

Journal AWWA

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Many utility managers do not have the time or funding to attend national conferences. Therefore, this article provides a way to highlight research findings that are of value in the daily operations of a utility. Being well‐informed about the advances in the field increases the value that a utility manager brings to his or her job each day. Research continues to improve the ability of conventional treatment processes to remove organic matter and other contaminants, such as arsenic. Inorganic contaminants, including nitrate, perchlorate, and ammonia, are a growing concern for many utilities. Biological treatment processes are emerging as a treatment option for inorganic contaminants and advances are improving removals with membrane and ion exchange technologies. Distribution system research has led to benchmarks for operations, better understanding of lead release, and characterization of microbial populations within pipe systems. Water utilities are entering the world of social media and implementing information technology advances such as cloud computing. Finally, for small systems in both developed and developing countries, research has demonstrated the value of operator training and performance‐based approaches in preventing disease.

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Coagulation of soil suspensions containing nonionic or anionic surfactants using chitosan, polyacrylamide, and polyaluminium chloride

Cited by 32 publications

References 34 publications

A preliminary study onJatropha curcasas coagulant in wastewater treatment

A preliminary study onJatropha curcasas coagulant in wastewater treatment

ε-polylysine biopolymer for coagulation of clay suspensions

Recent Research Every Utility Manager Needs to Know About

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