Biotreatment of Drinking Water

Hammes, Frederik; Velten, Silvana; Egli, Thomas; Juhna, Tālis

doi:10.1016/b978-0-08-088504-9.00386-x

Cited by 7 publications

(8 citation statements)

References 10 publications

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“…Interestingly, the biofilm accelerated the adsorption of Pb 2+ at 72 h, and the maximum adsorption capacity was observed to be 48.75 mg/g at neutral pH (Gallardo-Rodríguez et al, 2019). These studies and parallel observations published in the literature claim that EPSs support the entrapping of organic materials and microorganisms, hence obliquely boosting the straining properties of the filter (Hammes et al, 2011). Besides, EPS can decrease the harmful impacts of the toxic substances on the microbial bio-filters and can also be utilized as the carbon source or energy source, for the microbes in the absence of nutrients (Maurya and Raj, 2020).…”

Section: Eps As Supporting Materials For Biofilterssupporting

confidence: 79%

“…To date, several biofilmbased reactor configurations (for example, trickle bed, packed bed, fluidized bed, airlift suspensions, upflow anaerobic sludge blanket, rotating biofilm, etc.) have been developed and tested (Mendez and Lema, 1992;Nicolella et al, 2000;Qureshi et al, 2005), where the filter comprises EPS material surrounding a colony of indigenous microbial communities that perform at least one of the essential functions of the filtration process (Hammes et al, 2011). This immobilization process essentially enables the cells to be retained, propagate, and maintain their activity.…”

Section: Eps As Supporting Materials For Biofiltersmentioning

confidence: 99%

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Extremophilic Exopolysaccharides: Biotechnologies and Wastewater Remediation

et al. 2021

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Various microorganisms thrive under extreme environments, like hot springs, hydrothermal vents, deep marine ecosystems, hyperacid lakes, acid mine drainage, high UV exposure, and more. To survive against the deleterious effect of these extreme circumstances, they form a network of biofilm where exopolysaccharides (EPSs) comprise a substantial part. The EPSs are often polyanionic due to different functional groups in their structural backbone, including uronic acids, sulfated units, and phosphate groups. Altogether, these chemical groups provide EPSs with a negative charge allowing them to (a) act as ligands toward dissolved cations as well as trace, and toxic metals; (b) be tolerant to the presence of salts, surfactants, and alpha-hydroxyl acids; and (c) interface the solubilization of hydrocarbons. Owing to their unique structural and functional characteristics, EPSs are anticipated to be utilized industrially to remediation of metals, crude oil, and hydrocarbons from contaminated wastewaters, mines, and oil spills. The biotechnological advantages of extremophilic EPSs are more diverse than traditional biopolymers. The present review aims at discussing the mechanisms and strategies for using EPSs from extremophiles in industries and environment bioremediation. Additionally, the potential of EPSs as fascinating biomaterials to mediate biogenic nanoparticles synthesis and treat multicomponent water contaminants is discussed.

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Section: Eps As Supporting Materials For Biofilterssupporting

confidence: 79%

Section: Eps As Supporting Materials For Biofiltersmentioning

confidence: 99%

Extremophilic Exopolysaccharides: Biotechnologies and Wastewater Remediation

et al. 2021

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“…Biofilter is applied as sole process to make raw water potable in remote areas. Trickling filter or granular activated carbon (GAC) or sand filter is a common form of biofilter in wastewater treatment plant; GAC and sand filter are applied for treatment of raw water; rain garden and soil filter are examples of low-impact development filters for management of stormwater; horizontal rock filters are applied to mitigate polluted stream (Hammes et al, 2011;Lewandowski and Boltz, 2010). A biofilter can be defined as any type of filter media with attached microbial community on surface in the form of biofilm performing at least one essential functions of treatment process.…”

Section: Biofiltrationmentioning

confidence: 99%

“…Deeper in the bed, other mechanisms of transport (inertia, impaction, sedimentation, interception, hydrodynamic action, and diffusion) become effective. Pathogens carried to the particle are retained on filter media (Hammes et al, 2011).…”

Section: Slow Sand Filtrationmentioning

confidence: 99%

Biofiltration technique for removal of waterborne pathogens

Maurya

Singh

Kumar

2020

Waterborne Pathogens

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“…Esta tecnología consiste en pasar el agua sobre un medio granular compuesto por capas de carbón activado o antracita, conocido como lecho filtrante, que se encuentra cubierto con microorganismos que captan los analitos por mecanismos bioquímicos, removiendo las sustancias contaminantes En un biofiltro, los microorganismos crecen colonizando los poros de las partículas del lecho filtrante, de acuerdo a propiedades fisicoquímicas de la superficie tales como la adsorción y la concentración de carbono orgánico. En el caso de un lecho filtrante compuesto por partículas de carbón activado granular, donde existe una mayor superficie de contacto, la carga de biomasa alcanza valores entre 30 a 4000 ng ATP mL-1 (Hammes et al 2011). Brown et al (2015) mencionan que inicialmente en el biofiltro, ocurre una remoción de partículas y luego el control microbiológico realiza un tratamiento secundario, el cual es efectivo cuando el tiempo de residencia del agua es entre tres a veinte minutos.…”

Section: Producción De Agua Potable Y Tratamiento De Agua Residualunclassified

Potential application of lactic acid bacteria in water treatment systems

Luna

Vergara-González

2021

ECOS

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Actualmente la potencial aplicación de bacterias acido lácticas (BAL) en los sistemas de tratamiento de agua se visualiza como una solución a la producción de agua potable y al tratamiento de aguas residuales, debido a la alta demanda por fuentes de abastecimiento y al aumento del vertimiento de aguas tratadas, debido al incremento de las actividades industriales y el crecimiento poblacional. Bajo este contexto y como respuesta a esta demanda se está recurriendo al tratamiento de fuentes naturales contaminadas, aumentando significativamente su costo. Por ello, el uso de este tipo de bacterias en el agua se muestra como una alternativa, al ser tecnologías de bajo costo que se incorporan al reciclaje de agua, biodegradables y que no generan derivados peligrosos producto del tratamiento. En las fuentes de captación naturales, existen comunidades bacterianas dentro de las cuales es posible encontrar poblaciones de BAL de vida libre, las cuales poseen un rol de protección del ambiente dulceacuícola, dada su versatilidad y propiedades probióticas. Se ha visto que poseen efectos en la remoción de metales pesados del agua, por mecanismos biológicos tales como biosorción y bioacumulación, disminuyendo su presencia en el medio circundante. En este artículo se presenta una revisión respecto al uso de BAL en la biorremediación de sistemas acuícolas, especialmente respecto de su contaminación por metales pesados, con el fin de ser utilizadas en los sistemas de tratamiento de agua del sur de Chile central, entregando a profesionales del ámbito sanitario, una alternativa para la producción de agua de buena calidad.

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Biotreatment of Drinking Water

Cited by 7 publications

References 10 publications

Extremophilic Exopolysaccharides: Biotechnologies and Wastewater Remediation

Extremophilic Exopolysaccharides: Biotechnologies and Wastewater Remediation

Biofiltration technique for removal of waterborne pathogens

Potential application of lactic acid bacteria in water treatment systems

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