Optimization and characterization of polysaccharide-based bioflocculant produced by Paenibacillus elgii B69 and its application in wastewater treatment

Ou, Li; Lu, Cui; Liu, Ao; Zhu, Liang; Wang, Pin-Mei; Qian, Chao-Dong; Jiang, Xiaomo; Wu, Ximei

doi:10.1016/j.biortech.2013.02.013

Cited by 95 publications

(73 citation statements)

References 34 publications

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“…Many microorganism including bacteria, fungi, and algae can produce biological flocculants consisting of polysaccharides, proteins, or other macromolecules. Strains of P. jamilae , P. macerans , P. polymyxa , and P. validus have been shown to promote bioflocculation of heavy metal ions or acid dyes; and P. elgii B69 produces an exopolysaccharide (EPS) bioflocculant that can remove multiple pollutants including heavy metal ions, dyes, and kaolin clay over a wide pH range [120]. Paenibacillus could therefore be used to help remove contaminants from a variety of wastewaters.…”

Section: Bioremediationmentioning

confidence: 99%

Current knowledge and perspectives of Paenibacillus: a review

et al. 2016

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Isolated from a wide range of sources, the genus Paenibacillus comprises bacterial species relevant to humans, animals, plants, and the environment. Many Paenibacillus species can promote crop growth directly via biological nitrogen fixation, phosphate solubilization, production of the phytohormone indole-3-acetic acid (IAA), and release of siderophores that enable iron acquisition. They can also offer protection against insect herbivores and phytopathogens, including bacteria, fungi, nematodes, and viruses. This is accomplished by the production of a variety of antimicrobials and insecticides, and by triggering a hypersensitive defensive response of the plant, known as induced systemic resistance (ISR). Paenibacillus-derived antimicrobials also have applications in medicine, including polymyxins and fusaricidins, which are nonribosomal lipopeptides first isolated from strains of Paenibacillus polymyxa. Other useful molecules include exo-polysaccharides (EPS) and enzymes such as amylases, cellulases, hemicellulases, lipases, pectinases, oxygenases, dehydrogenases, lignin-modifying enzymes, and mutanases, which may have applications for detergents, food and feed, textiles, paper, biofuel, and healthcare. On the negative side, Paenibacillus larvae is the causative agent of American Foulbrood, a lethal disease of honeybees, while a variety of species are opportunistic infectors of humans, and others cause spoilage of pasteurized dairy products. This broad review summarizes the major positive and negative impacts of Paenibacillus: its realised and prospective contributions to agriculture, medicine, process manufacturing, and bioremediation, as well as its impacts due to pathogenicity and food spoilage. This review also includes detailed information in Additional files 1, 2, 3 for major known Paenibacillus species with their locations of isolation, genome sequencing projects, patents, and industrially significant compounds and enzymes. Paenibacillus will, over time, play increasingly important roles in sustainable agriculture and industrial biotechnology.Electronic supplementary materialThe online version of this article (doi:10.1186/s12934-016-0603-7) contains supplementary material, which is available to authorized users.

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Section: Bioremediationmentioning

confidence: 99%

Current knowledge and perspectives of Paenibacillus: a review

et al. 2016

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“…Li et al. () noticed that peptone was more favorable for the production of bioflocculant by Paenibacillus elgii B69 among other nitrogen sources evaluated. Table depicts the various optimum conditions for bioflocculant production, flocculating activity, chemical composition, and yields from different microorganisms.…”

Section: Effect Of Carbon and Nitrogen Sources On Bioflocculant Produmentioning

confidence: 99%

“…The major source of water pollution is the discharge of domestic and agricultural wastes, and untreated sanitary and toxic industrial effluents (Li et al. ). The presence of pollutants in water bodies can be pernicious to aquatic life as well as render it unsuitable as potable water sources for domestic usage.…”

Section: Introductionmentioning

confidence: 99%

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Implications for public health demands alternatives to inorganic and synthetic flocculants: bioflocculants as important candidates

et al. 2016

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Chemical flocculants are generally used in drinking water and wastewater treatment due to their efficacy and cost effectiveness. However, the question of their toxicity to human health and environmental pollution has been a major concern. In this article, we review the application of some chemical flocculants utilized in water treatment, and bioflocculants as a potential alternative to these chemical flocculants. To the best of our knowledge, there is no report in the literature that provides an up‐to‐date review of the relevant literature on both chemical flocculants and bioflocculants in one paper. As a result, this review paper comprehensively discussed the various chemical flocculants used in water treatment, including their advantages and disadvantages. It also gave insights into bioflocculants production, challenges, various factors influencing their flocculating efficiency and their industrial applications, as well as future research directions including improvement of bioflocculants yields and flocculating activity, and production of cation‐independent bioflocculants. The molecular biology and synthesis of bioflocculants are also discussed.

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“…bioflocculants, has recently attracted huge scientific and biotechnological consideration. Bioflocculants have been widely used in various industrial processes, including water treatment (Buthelezi et al 2009;Li et al 2009), wastewater flocculation and settling (Gong et al 2008;Li et al 2013), wastewater colour removal (Solis et al 2012;Zhang et al 2009), sludge dewatering (More et al 2010;Yang et al 2012), heavy metal removal (Chien et al 2013;Mikutta et al 2012), toxic organic compound removal (Zhang et al 2011), landfill leachate treatment (Renou et al 2008) and soil remediation and reclamation (More et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Palm oil mill effluent as a low-cost substrate for bioflocculant production by Bacillus marisflavi NA8

Nurul-Adela

Nasrin

Loh

2016

Bioresour. Bioprocess.

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Background: Palm oil mill effluent (POME) generated from the palm oil milling process contains high organic matter from which the molecule of interest for bioconversion such as fermentable sugar can be derived. This study examined the enzymatic hydrolysis of complex celluloses and polysaccharides present in POME with the aim to release the simple sugars as low-cost fermentable feedstock convertible into bioflocculant. Results:The maximum concentration of fermentable sugar produced after 24 h of hydrolysis was 30.5 g/L. The POME hydrolysate served as a carbon source for Bacillus marisflavi NA8 to produce bioflocculant. The optimum conditions obtained were an initial pH of 7.0 and a temperature of 37 °C with an inoculum size of 5 % (v/v), yielding 6.4 g/L or 32 kg/t bioflocculant from POME. Conclusion:This finding indicated that POME could be utilized as a low-cost substrate to improve the feasibility of commercial production of bioflocculant.

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Optimization and characterization of polysaccharide-based bioflocculant produced by Paenibacillus elgii B69 and its application in wastewater treatment

Cited by 95 publications

References 34 publications

Current knowledge and perspectives of Paenibacillus: a review

Current knowledge and perspectives of Paenibacillus: a review

Implications for public health demands alternatives to inorganic and synthetic flocculants: bioflocculants as important candidates

Palm oil mill effluent as a low-cost substrate for bioflocculant production by Bacillus marisflavi NA8

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