Characterization of a novel bioflocculant, p-KG03, from a marine dinoflagellate, Gyrodinium impudicum KG03

Yim, Joung Han; Kim, Sung Jin; Ahn, Se Hun; Lee, Hong Kum

doi:10.1016/j.biortech.2005.12.021

Cited by 199 publications

(70 citation statements)

References 20 publications

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“…In our research, the IR spectrum of ZS-7 clearly showed the presence of carboxyl, hydroxyl, amide, amino, methoxyl and sulfate groups in its molecules, which are the preferred groups for the flocculation, similar to those observed in polyelectrolytes (Wu & Ye 2007). Furthermore, the elements analysis of the bioflocculant ZS-7 indicated that the nitrogen and oxygen content of the bioflocculant were much higher than other bioflocculants reported in previous work (Salehizadeh & Shojaosadati 2001;Lu et al 2005;Yim et al 2007), suggesting that there are many functional groups containing nitrogen and oxygen atoms that preferred for flocculation. The weight-average molecular weight of ZS-7 was much lower than other bioflocculants reported previously, but ZS-7 had excellent flocculating activity with a dosage as low as only 2 mg/L for kaolin suspension.…”

Section: Effect Of Cation Types and Concentrationssupporting

confidence: 71%

Flocculation properties of a bioflocculant produced by Bacillus licheniformis

Zhang

et al. 2010

Water Science and Technology

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Studies of the flocculation properties of bioflocculant combined with its structure characterization are helpful to develop more effective bioflocculant. This paper reports findings of our research on the flocculation properties of the bioflocculant ZS-7 in the kaolin suspension based on its structure characterization. With the addition of 2 mg/L ZS-7 and 9 mM CaCl(2), the optimum temperature for flocculation performance of ZS-7 in the kaolin suspension is about 30°C, giving the highest flocculating activity 99.2%. Studies of the flocculation properties revealed that it was stable at 60-100°C and pH 4-10. Moreover, it could flocculate a kaolin suspension over a wide range of pH (2-12) and temperatures (4-95°C) in the presence of CaCl(2).

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Section: Effect Of Cation Types and Concentrationssupporting

confidence: 71%

Flocculation properties of a bioflocculant produced by Bacillus licheniformis

Zhang

et al. 2010

Water Science and Technology

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“…Flocculation with high molecular weight bioflocculants involves more adsorption points, stronger bridging, and higher flocculating activities than with low molecular weight bioflocculants (Salehizadeh and Shojaosadati, 2001). However, elemental analysis of the purified bioflocculant indicated that it has higher content of nitrogen and oxygen than do other previously reported bioflocculants (Lu et al, 2005;Yim et al, 2007), suggesting that there are many functional groups containing nitrogen and oxygen atoms that are preferred for flocculation (Li et al, 2009).…”

Section: Characterization Of Purified Bioflocculantmentioning

confidence: 88%

Production and characterization of a thermostable bioflocculant from Bacillus subtilis F9, isolated from wastewater sludge

Giri

Muthukumar

Sen

et al. 2015

Ecotoxicology and Environmental Safety

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“…The bioflocculant p-KG03 was reported to be active at acidic conditions (pH 3-6) (Yim et al 2007), while the bioflocculant of Nannocystis sp. NU-2 was active in alkaline conditions ranging from pH 12-14 in the presence of 30 mg/l CaCl 2 Á2H 2 O (Zhang et al 2002).…”

Section: Effect Of Ph On the Flocculating Activitymentioning

confidence: 98%

Characterization and flocculating properties of a novel bioflocculant produced by Bacillus circulans

Chen

Lei

et al. 2008

World J Microbiol Biotechnol

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We studied a novel bioflocculant, PX, that is produced from Bacillus Bacillus circulans X3, and has excellent flocculating activity with regard to its characterization and flocculating properties. The bioflocculant was purified from supernatant by ethanol precipitation, dialysis and gel permeation chromatography (GPC). The major component of PX was an acid polysaccharide including uronic (19.8%), pyruvic (6.5%) and acetic acids (0.7%). It consisted of galactose, mannose, xylitol, rhamnose and galacturonic acid in an approximate molar ration of 5:4.1:3:2:1.2. The molecular weight of PX was about 4.85 9 10 4 Da as determined by GPC. The infrared spectrum of the bioflocculant indicated the presence of carboxyl, hydroxyl, amino and methoxyl groups. Studies of the flocculating properties revealed that it was stable at 60-100°C and pH 4-10. Moreover, it could flocculate a kaolin suspension over a wide range of pH and temperature in the presence of CaCl 2 .

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Characterization of a novel bioflocculant, p-KG03, from a marine dinoflagellate, Gyrodinium impudicum KG03

Cited by 199 publications

References 20 publications

Flocculation properties of a bioflocculant produced by Bacillus licheniformis

Flocculation properties of a bioflocculant produced by Bacillus licheniformis

Production and characterization of a thermostable bioflocculant from Bacillus subtilis F9, isolated from wastewater sludge

Characterization and flocculating properties of a novel bioflocculant produced by Bacillus circulans

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