Concept of Microbiological Processes

Behera, Basanta Kumara; Varma, Ajit

doi:10.1007/978-3-319-53913-3_1

Cited by 3 publications

(1 citation statement)

References 104 publications

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“…Les microorganismes utilisent le phosphore comme un élément nutritif essentiel pour la construction de leur matériel génétique et des molécules énergétiques type ATP et des phospholipides membranaires (Geary et Moore, 1999) ainsi les orthophosphates dissous dans l'eau sont utilisables dans la croissance de ces microorganismes vu qu'ils sont biodisponibles (Kumara Behera et Varma, 2017). Lors de la décomposition de la matière organique phosphorée, les microorganismes présents dans les eaux la transforment en phosphates minéraux dissous selon le processus de minéralisation (Mendes et al, 2017).…”

Section: éVolution Du Phosphoreunclassified

Utilisation d’un lit fixe d’origine naturelle pour le traitement biologique d'effluents laitiers

Aitcheikh¹,

Boutaleb²,

Bahlaouan³

et al. 2018

Environnement, Ingénierie &Amp; Développement

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The use of oyster shells as a naturally applied as the media in biomass-fixed biological reactors has been studied in the presence of Aspergillus niger and Penicillium chrysogenum fungi for the treatment of dairy effluents. The objective is to compare the purification performance between several biofilms biological treatments, different by the use of colonization supports and also by their design. The common Kadnes commercial media (Kaldnes K3) was thus studied in the case of biological treatment of the same effluent, and the abatement performances of the organic pollution in both cases were compared. The results show comparable performance after 24 hours of treatment. These yields were better compared to the biological treatment that does not use media of colonization. L’utilisation de coquilles d’huîtres comme support, d’origine naturelle, dans les réacteurs biologiques à biomasse fixe a été étudiée en présence de champignons Aspergillus niger et Penicillium chrysogenum pour le traitement des effluents de laiteries. L’objectif étant de comparer les performances d’épuration entre plusieurs traitements biologiques à biofilms, différents par l’utilisation de supports de colonisation et aussi par leurs conceptions. Le support commercial commun Kadnes (Kaldnes K3) a été ainsi étudié dans le cas de traitements biologiques du même effluent, et les performances d’abattement de la pollution organique dans les deux cas ont été comparées. Les résultats révèlent des performances comparables après 24 heures de traitement. Ces rendements étaient meilleurs comparés au traitement biologique qui n’utilise pas de supports.

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Section: éVolution Du Phosphoreunclassified

Utilisation d’un lit fixe d’origine naturelle pour le traitement biologique d'effluents laitiers

Aitcheikh¹,

Boutaleb²,

Bahlaouan³

et al. 2018

Environnement, Ingénierie &Amp; Développement

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Enhanced hydrogen production by mevastatin in microbial electrolysis cells

et al. 2021

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Mevastatin is one of the common pharmaceuticals found in wastewaters, and its biodegradation is still an environmental problem due to its recalcitrant properties. Although various biological, chemical and physical methods have been investigated for the removal of mevastin, microbial electrolysis cells (MECs) have not been examined, yet. MECs are new generation biotechnological tools used in hydrogen energy production. In this study, the effects of mevastatin on hydrogen production in MECs were investigated for the first time. MECs produced hydrogen gas in the presence of mevastatin, and an increase in hydrogen production was observed. Over 90% of the mevastatin were removed in MECs. These results also showed that the fermentation process associated with carbon dioxide production can favor hydrogen production with mevastatin. In conclusion, the efficiency of hydrogen production in microbial cells can be increased by the use of wastewaters contaminated with mevastatin.

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Single-cell protein production from purple non-sulphur bacteria-based wastewater treatment

Wada

Vincent

Mackey

2022

Rev Environ Sci Biotechnol

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Large-scale production of single-cell protein (SCP) has the potential not only to solve some of the food insecurity and water scarcity crises that plague a significant portion of our world today but also holds the promise to reduce the cost associated with the treatment of industrial and agricultural wastewater. Resource recovery of SCP from organic waste by microbes like yeast and microalgae is commonly documented. However, recently, a class of phototrophic bacteria, purple non-sulphur bacteria (PNSB), has emerged as a favourable option in terms of both wastewater treatment and resource recovery. PNSB are metabolically versatile and tolerant to a wide range of conditions, hence their ability to thrive in diverse waste streams. Besides its rich protein content, PNSB contains other nutritionally valuable bioproducts like carotenoids, coenzyme Q10, 5-aminolevulinic acid, and pantothenic acid. Recent evidence also indicates that PNSB-based aquafeed enhances growth and boosts immunity in certain aquaculture trials. It does not possess the same toxicity as most gram-negative bacteria due to its comparatively less potent lipopolysaccharide composition. With diverse promising prospects of PNSB-based SCP, it is critical to extensively examine the landscape from a holistic standpoint, highlighting the potential challenges large-scale SCP production may pose. Thus, this review explores the comparative advantages of utilizing PNSB for SCP production, essential components of PNSB-based SCP processing, and possible environmental and economic gains associated with the process. Current challenges with PNSB-based SCP production and future outlooks are also examined.

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Concept of Microbiological Processes

Cited by 3 publications

References 104 publications

Utilisation d’un lit fixe d’origine naturelle pour le traitement biologique d'effluents laitiers

Utilisation d’un lit fixe d’origine naturelle pour le traitement biologique d'effluents laitiers

Enhanced hydrogen production by mevastatin in microbial electrolysis cells

Single-cell protein production from purple non-sulphur bacteria-based wastewater treatment

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