Treatment of wastewater by mixed bacterial consortium in continuous reactors packed with solid waste

Chakraborty, Bhaswati; Basu, Saurav

doi:10.1016/j.jwpe.2017.04.002

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…Also, the use of the immobilized system presents the following advantages over the free one: repeated use, easy separation from the medium, less contamination risk, protection against environmental perturbations ( e.g ., pH, toxic chemicals), and shear damage. − …”

Section: Resultsmentioning

confidence: 99%

New Type Biomembrane: Transport and Biodegradation of Reactive Textile Dye

et al. 2020

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In traditional separation processes, there are environmental risks still because of the presence of toxic agents. Thus, a novel biomembrane microreactor named eco-green biomembrane (EgBM) was developed to perform the transport, biodegradation, and cleaning of a textile dye aqueous solution (3 mg/L) from the donor (i.e., textile dye) to the acceptor (i.e., laccase enzymes) phases. In the present work, Morchella esculenta pellets were used as carriers and degraders instead of using the traditional chemical carriers. The optimized EgBM was made of cellulose triacetate (16.1%) as a base polymer, 2-nitrophenyl octyl ether (25.2%) as a plasticizer, and M. esculenta fungus pellets (58.7%) as both carriers and degraders. A decoloration percentage of 98.6% ± 0.8 in 60 h was attained, which was due to two mechanisms: biosorption (15.4% ± 0.1) on fungal mycelium and biodegradation (83.2% ± 0.6) by laccase enzymes. The EgBM was achieved not only by the transport of reactive textile dyes used in the donor phase but also by the biodegradation and biosorption of the dyes.

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Section: Resultsmentioning

confidence: 99%

New Type Biomembrane: Transport and Biodegradation of Reactive Textile Dye

et al. 2020

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“…Results showed that 80% of methylene blue (25 mg l −1 ) and phenol (10 mg l −1 ) were removed in binary batch system by passive adsorption mechanism and intracellular and extracellular enzymatic degradation within 80 min, respectively. Chakraborty and Basu (2017) used East Calcutta Wetlands isolated mixed consortium of bacteria to compare the performance of a counter‐current and a co‐current continuous PBR in degrading phenol. Results showed a 1·43 mg l −1 min rate of phenol degradation and 72·85% of phenol removal efficiency of co‐current continuous PBR.…”

Section: Packed Bed Reactormentioning

confidence: 99%

A comprehensive review on application of bioreactor for industrial wastewater treatment

Meena

Yadav

Sonigra

et al. 2021

Letters Applied Microbiology

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In the recent past, wastewater treatment processes perform a pivotal role in accordance to maintain the sustainable environment and health of mankind at a proper hygiene level. It has proven as indispensable by government regulations throughout the world due to the importance of preserving freshwater bodies. Human activities, predominantly from industrial sectors, generate an immeasurable amount of industrial wastewater loaded with toxic chemicals, which not only cause dreadful environmental problems but also leave harmful impacts on public health. Hence, industrial wastewater effluent must be treated before releasing into the environment to restrain the problems related to industrial wastewater discharge to the environment. Nowadays, biological wastewater treatment methods have been considered as an excellent approach for industrial wastewater treatment process because of their cost-effectiveness in the treatment, high efficiency, and their potential to counteract the drawbacks of conventional wastewater treatment methods. Recently, the treatment of industrial effluent through bioreactor has proven as one of the best methods from the presently available methods. Reactors are the principle part of any biotechnology-based method for microbial or enzymatic biodegradation, biotransformation, and bioremediation. This review aims to explore and compile the assessment of the most appropriate reactors, like, packed bed reactor, membrane bioreactor, rotating biological contactor, up-flow anaerobic sludge blanket reactor, photobioreactor, biological fluidized bed reactor, continuous stirred tank bioreactor, etc. that are extensively used for distinct industrial wastewater treatment.

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