Biological Treatment of Textile Dyes by Agar‐Agar Immobilized Consortium in a Packed Bed Reactor

Patel, Yogesh; Gupte, Akshaya

doi:10.2175/106143015x14212658613190

Cited by 31 publications

(6 citation statements)

References 25 publications

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“…[22][23][24][25] With the advent of multi-material 3D printing, [26][27][28][29][30][31] new capabilities are emerging that will enable the creation of synthetic hydrogel structures that can approximate the microenvironment of biofilms. [32][33][34] While there is growing research that details the development of materials for cellular encapsulation for the production of living material bioreactors, [35][36][37][38][39][40][41][42] there are few reports of multimaterial printed objects with more than one microorganism, and our understanding of the mobility of the immobilized cells (particularly through F127-based hydrogel matrices) is still lacking. In this study, we present an investigation of F127-BUM hydrogel inks for multi-material printing objects that are comprised of up to three microorganisms from different taxonomic kingdoms.…”

Section: Introductionmentioning

confidence: 99%

Cell‐Laden Hydrogels for Multikingdom 3D Printing

Johnston

Fillman

Priks

et al. 2020

Macromolecular Bioscience

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Living materials are created through the embedding of live, whole cells into a matrix that can house and sustain the viability of the encapsulated cells. Through the immobilization of these cells, their bioactivity can be harnessed for applications such as bioreactors for the production of high‐value chemicals. While the interest in living materials is growing, many existing materials lack robust structure and are difficult to pattern. Furthermore, many living materials employ only one type of microorganism, or microbial consortia with little control over the arrangement of the various cell types. In this work, a Pluronic F127‐based hydrogel system is characterized for the encapsulation of algae, yeast, and bacteria to create living materials. This hydrogel system is also demonstrated to be an excellent material for additive manufacturing in the form of direct write 3D‐printing to spatially arrange the cells within a single printed construct. These living materials allow for the development of incredibly complex, immobilized consortia, and the results detailed herein further enhance the understanding of how cells behave within living material matrices. The utilization of these materials allows for interesting applications of multikingdom microbial cultures in immobilized bioreactor or biosensing technologies.

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Section: Introductionmentioning

confidence: 99%

Cell‐Laden Hydrogels for Multikingdom 3D Printing

Johnston

Fillman

Priks

et al. 2020

Macromolecular Bioscience

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“…On the other hands, biodegradation of dye is a challenge not only because of the low BOD/COD ratio but also the presence of metals, metalloids, salts, and other toxicants (Imran et al, 2015). Conventional and innovative biological processes have been tried including adsorbent assisted biodegradation using sequencing batch reactor (SRB) (Santos and Boaventura, 2015), aerobic-anaerobic bacteria (Popli and Patel, 2015), and packed bed reactor using a consortium of bacteria (Patel and Gupte, 2015). While biological processes work to certain extent and they are difficult to be sustained in textile wastewater.…”

Section: Introductionmentioning

confidence: 99%

Rapid reductive degradation of azo and anthraquinone dyes by nanoscale zero-valent iron

Dutta

Saha

Kalita

et al. 2016

Environmental Technology & Innovation

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The presence of residual dyesin textile effluent is not desired as they are very toxic to the ecosystem components and carcinogenic in nature. The removal of reactive azo dye Remazol Brilliant Orange 3RID (RBO3RID) and anthraquinone dye Reactive Blue MR (RBMR) by nanoscale zero-valent iron (NZVI) particles was investigated in this study. The dyes were degraded up to 97%by NZVI particles under different experimental conditions likeNZVI dosages (0.15-0.3 g/L), initial dye concentrations (100-500 mg/L), and pH values (2-12). NZVIwas found to work the best in the pH range of 8-12 which is the typical range of pH in textile wastewater. One gram of NZVI could remove up to 2757mg of RBO3RID dye and 2207 mg of RBMR dye, and more than 80% dye removal was achieved within the first 15 minutes of reaction. FT-IR analyses showed the end products after the degradation are amines.

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“…These facts certainly demand the development of an efficient, cost effective and green technology for decolorization and detoxification of dyes and industrial effluents. Biological approach using ligninolytic system of white rot fungi (WRF) seems to be the most potential alternative than traditional physico-chemical methods [ 8 – 10 ].…”

Section: Introductionmentioning

confidence: 99%

Dye decolorization and detoxification potential of Ca-alginate beads immobilized manganese peroxidase

2015

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BackgroundIn view of compliance with increasingly stringent environmental legislation, an eco-friendly treatment technology of industrial dyes and effluents is a major environmental challenge in the color industry. In present study, a promising and eco‐friendly entrapment approach was adopted to immobilize purified manganese peroxidase (MnP) produced from an indigenous strain of Ganoderma lucidum IBL-05 on Ca-alginate beads. The immobilized MnP was subsequently used for enhanced decolorization and detoxification of textile reactive dyes).ResultsMnP isolated from solid-state culture of G. lucidum IBL-05, presented highest immobilization yield (83.9 %) using alginate beads prepared at optimized conditions of 4 % (w/v) sodium alginate, 2 % (w/v) Calcium chloride (CaCl2) and 0.5 mg/ml enzyme concentration. Immobilization of MnP enhanced optimum temperature but caused acidic shift in optimum pH of the enzyme. The immobilized MnP showed optimum activity at pH 4.0 and 60 °C as compared to pH 5.0 and 35 °C for free enzyme. The kinetic parameters Km and Vmax of MnP were significantly improved by immobilization. The enhanced catalytic potential of immobilized MnP led to 87.5 %, 82.1 %, 89.4 %, 95.7 % and 83 % decolorization of Sandal-fix Red C4BLN, Sandal-fix Turq Blue GWF, Sandal-fix Foron Blue E2BLN, Sandal-fix Black CKF and Sandal-fix Golden Yellow CRL dyes, respectively. The insolubilized MnP was reusable for 7 repeated cycles in dye color removal. Furthermore, immobilized MnP also caused a significant reduction in biochemical oxygen demand (BOD) (94.61-95.47 %), chemical oxygen demand (COD) (91.18-94.85 %), and total organic carbon (TOC) (89.58-95 %) of aqueous dye solutions.ConclusionsG. lucidum MnP was immobilized in Ca-alginate beads by entrapment method to improve its practical effectiveness. Ca-alginate bound MnP was catalytically more vigorous, thermo-stable, reusable and worked over wider ranges of pH and temperature as compared to its free counterpart. Results of cytotoxicity like hemolytic and brine shrimp lethality tests suggested that Ca-alginate immobilized MnP may effectively be used for detoxification of dyes and industrial effluents.

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Biological Treatment of Textile Dyes by Agar‐Agar Immobilized Consortium in a Packed Bed Reactor

Cited by 31 publications

References 25 publications

Cell‐Laden Hydrogels for Multikingdom 3D Printing

Cell‐Laden Hydrogels for Multikingdom 3D Printing

Rapid reductive degradation of azo and anthraquinone dyes by nanoscale zero-valent iron

Dye decolorization and detoxification potential of Ca-alginate beads immobilized manganese peroxidase

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