Biosorption of reactive dyes from aqueous media using the Bacillus sp. residual biomass

2020 ◽  
Vol 195 ◽  
pp. 353-360
Author(s):  
Ioana Luiza Horciu ◽  
Alexandra Cristina Blaga ◽  
Lacramioara Rusu ◽  
Carmen Zaharia ◽  
Daniela Suteu
Keyword(s):  
Aqueous Media ◽  
Reactive Dyes ◽  
Bacillus Sp ◽  
Residual Biomass

Sorption of reactive dyes from aqueous media using the lavender waste as biosorbent

2021 ◽  
Vol 236 ◽  
pp. 348-358
Author(s):  
Alexandra Tanasa ◽  
Adrian Catalin Puitel ◽  
Carmen Zaharia ◽  
Daniela Suteu
Keyword(s):  
Aqueous Media ◽  
Reactive Dyes

Adsorption Applications of Bacillus sp. Biomass for Decolorization of Soluble Reactive Dyes Contaminated Solutions

2011 ◽  
Vol 71-78 ◽  
pp. 2294-2297
Author(s):  
Yan Li Mao ◽  
Yun Yu ◽  
Shi Tian Luo ◽  
Xiao Lin Lv
Keyword(s):  
Culture Medium ◽  
Reactive Dyes ◽  
Culture Conditions ◽  
Inoculum Size ◽  
Bacillus Sp ◽  
Light Yellow ◽  
Molasses Wastewater ◽  
Decolorization Efficiency ◽  
Flocculating Activity ◽  
Initial Ph

The optimal conditions of production of biopolymer by the culture of Bacillus sp.were examined, using molasses wastewater to replace glucose as carbon source and energy source in the culture medium. Results showed that the COD concentration in molasses wastewater favorable for the growth of the Bacillus sp.was 4500 mg•L-1, and inoculum size of 6%(v/v), 28◦C, initial pH 7.0 and shaking speed of 160 r•min-1, under the optimal culture conditions, the highest flocculating activity achieved for Kaolin suspension was 97.5% and 4.0 g biomass /L broth was obtained. The Bacillus sp. biomass was effective in flocculating some soluble reactive dyes in aqueous solution, reactive Light-Yellow K-4G and reactive Turquoise Blue KN-G with a decolorization efficiency of 98.5 and 92.5%, respectively, using 20 mL of the flocculant in 500 mL of 100 mg•L-1 dye solution.

scholarly journals Dyeing Property and Adsorption Kinetics of Reactive Dyes for Cotton Textiles in Salt-Free Non-Aqueous Dyeing Systems

Polymers ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1030 ◽  
Author(s):  
Jiping Wang ◽  
Yuanyuan Gao ◽  
Lei Zhu ◽  
Xiaomin Gu ◽  
Huashu Dou ◽  
...  
Keyword(s):  
Surface Tension ◽  
Adsorption Equilibrium ◽  
Aqueous Media ◽  
Reactive Dyes ◽  
Reactive Dye ◽  
Adsorption Rate ◽  
Order Kinetic ◽  
Cotton Textiles ◽  
Order Kinetic Model ◽  
Large Water

In recent years, new concepts in textile dyeing technology have been investigated which aim to decrease the use of chemicals and the emission of water. In this work, dyeing of cotton textiles with reactive dyes has been investigated in a silicone non-aqueous dyeing system. Compared with conventional aqueous dyeing, almost 100% of reactive dyes can be adsorbed on cotton textiles without using any salts in non-aqueous dyeing systems, and the fixation of dye is also higher (80%~90% for non-aqueous dyeing vs. 40%~50% for traditional dyeing). The pseudo-second-order kinetic model can best describe the adsorption and equilibrium of reactive dyes in the non-aqueous dyeing systems as well as in the traditional water dyeing system. In the non-aqueous dyeing systems, the adsorption equilibrium of reactive dyes can be reached quickly. Particularly in the siloxane non-aqueous dyeing system, the adsorption equilibrium time of reactive dye is only 5–10 min at 25 °C, whereas more time is needed at 60 °C in the water dyeing system. The surface tension of non-aqueous media influences the adsorption rate of dye. The lower the surface tension, the faster the adsorption rate of reactive dye, and the higher the final uptake of dye. As a result, non-aqueous dyeing technology provides an innovative approach to increase dye uptake under a low dyeing temperature, in addition to making large water savings.

scholarly journals Decolorization and Degradation of Reactive Blue Dye Used in Jute and Textile Industries by a Newly Isolated Bacillus sp.

2020 ◽  
pp. 167-176 ◽  
Keyword(s):  
Biological Treatment ◽  
Bacterial Isolate ◽  
Reactive Dyes ◽  
Reactive Dye ◽  
Blue Dye ◽  
Bacillus Sp ◽  
Textile Industries ◽  
Static Conditions ◽  
Dark Blue ◽  
Maximum Decolorization

For biodegradation of reactive dyes used in jute and textile industries, bacteria were isolated from a dyeing mill effluent. Bacteria having a remarkable ability to decolorize and degrade reactive dye were screened by using dye Reactive Dark Blue WR (RDB-WR). Cultural, morphological and biochemical characteristics were observed, and based on these seven isolates having higher decolorizing capability was identified. Among these isolates, one of the prominent dye decolorizing isolates Bacillus sp. was taken for decolorization study. Under different physicochemical conditions, decolorization and degradation capabilities of Bacillus sp. were optimized by using RDB-WR, a dye commonly used in the jute and textile industries. This bacterium decolorized and grew well up to 500 mg L-1 of RDB-WR. Bacillus sp. showed significant decolorization approximately 86% at 200 mg L-1 of RDB-WR after 96 h of incubation. Optimum degradation of dye was achieved at 37 °C. Maximum decolorization was observed at pH 7.0 under static conditions. The study confirmed the potential of Bacillus in the biodegradation of Reactive Dark Blue WR. This bacterial isolate might be prospective in the biological treatment of dyeing mill effluents due to the high extent of decolorization.

Optimization of Removal Conditions of Soluble Reactive Dyes from Aqueous Solutions by Bacillus sp. Biomass

2012 ◽  
Vol 430-432 ◽  
pp. 395-398
Author(s):  
Gai Xia Fang ◽  
Li Hua Chen
Keyword(s):  
Energy Source ◽  
Culture Medium ◽  
Reactive Dyes ◽  
Culture Conditions ◽  
Inoculum Size ◽  
Bacillus Sp ◽  
Optimal Conditions ◽  
Light Yellow ◽  
Decolorization Efficiency ◽  
Initial Ph

The optimal conditions of by the culture of Bacillus sp.were examined, using beer wastewater to replace glucose as carbon source and energy source in the culture medium. Results showed that the COD concentration in beer wastewater favorable for the growth of the Bacillus sp.was 5000 mg•L-1, and inoculum size of 5%(v/v), 30◦C, initial pH 7.0 and shaking speed of 150 r•min-1, under the optimal culture conditions, the Bacillus sp. biomass was effective in flocculating some soluble reactive dyes in aqueous solution, reactive Light-Yellow K-4G and reactive Turquoise Blue KN-G with a decolorization efficiency of 93.8 and 95.5%, respectively, using 20 mL of the culture medium in 500 mL of 100 mg•L-1 dye solution.

scholarly journals Use of agro-industrial residues of plantain (Musa paradisiaca) in the adsorption of Ni (II)

2021 ◽  
Author(s):  
Candelaria Tejada-Tovar ◽  
Ángel Villabona-Ortíz ◽  
Walter Cortina-Góngora ◽  
Betty Díaz-Navarro ◽  
Rodrigo Ortega Toro
Keyword(s):  
Thermodynamic Parameters ◽  
Aqueous Media ◽  
Effect Of Temperature ◽  
Maximum Adsorption Capacity ◽  
Order Model ◽  
Industrial Residues ◽  
Residual Biomass ◽  
Batch System ◽  
Pseudo Second Order ◽  
Solution Volume

The presence of heavy metals in aqueous media represents a severe threat to ecosystems because they are non-biodegradable, toxic, and carcinogenic. In the present work, the utilization of agro-industrial residues from obtaining plantain starch for removing Ni (II) was studied, establishing the effect of temperature, adsorption dose, and initial concentration. The kinetics, equilibrium, and thermodynamic parameters that determine the process were studied. For this purpose, tests were carried out in a batch system maintaining constant stirring (200 rpm), pH (2), and solution volume (100 mL). The remaining metal concentration was determined by atomic adsorption at 237 nm. It was found that the best adsorption conditions were given at 55 ºC, 0.6775 g, and 368 mg/L obtaining a maximum adsorption capacity of 47.57 mg/g corresponding to a removal of 87%. The kinetic model that best fits the experimental data was a pseudo-second-order model, and the isotherm that describes the process is Langmuir and Freundlich, so the adsorption is given by chemisorption and multilayers. The thermodynamic parameters determined suggest that the process is favourable, not spontaneous, endothermic, and irreversible under the studied conditions. The results show that the residual biomass from the obtaining of plantain starch is a good precursor for absorbing Ni (II) in an aqueous solution.

Valorization of Glycerol into Polyhydroxyalkanoates by Sludge Isolated Bacillus sp. RER002: Experimental and Modeling Studies

2014 ◽  
Vol 9 (2) ◽  
pp. 117-131 ◽  
Author(s):  
Mohd Zafar ◽  
Shashi Kumar ◽  
Surendra Kumar ◽  
Jay Agrawal ◽  
Amit K. Dhiman
Keyword(s):  
Material Properties ◽  
Crude Glycerol ◽  
Stochastic Search ◽  
Yield Coefficient ◽  
Glycerol Concentration ◽  
Biomass Growth ◽  
Bacillus Sp ◽  
Residual Biomass ◽  
Glycerol Consumption ◽  
Glycerol Medium

Abstract In this study, the feasibility of glycerol valorization into homo- and hetero-polymers of polyhydroxyalkanoates by a sludge isolated Bacillus sp. RER002 in a 3 L bioreactor was investigated. A mathematical model including logistic, Luedeking–Piret, and Luedeking–Piret-like equations that simulated the active residual biomass growth, P(3HB) synthesis, and glycerol consumption, respectively, was developed. In order to describe the dynamics of batch P(3HB) production, the model kinetic parameters viz., µmax, K1, K2, α, β, and KN were optimized using the stochastic search-based genetic algorithm. The synthesis of P(3HB) wasobserved to be highly growth associated and partially non-growth associated as reflected in a significant higher values of K1 (0.2435–0.5477) than K2 (2.2 × 10−6 to 9.1 × 10−3) within the glycerol concentration range of 10–40 g/L. Besides, the maximum 3.2g/L of copolymer [P(3HAscl-co-3HAmcl)] was observed at 30 g/L of glycerol concentration in synthetic crude glycerol medium with a yield coefficient (YP/S) of 0.16 g/g. Furthermore, the analyses of chemical and thermal properties of copolymer P(3HAscl-co-3HAmcl) revealed its enhanced material properties which make it suitable for various applications.

scholarly journals Brilliant Red HE-3B Dye Biosorption by Immobilized Residual Consortium Bacillus sp. Biomass: Fixed-Bed Column Studies

2021 ◽  
Vol 11 (10) ◽  
pp. 4498
Author(s):  
Luiza Ioana Horciu ◽  
Carmen Zaharia ◽  
Alexandra Cristina Blaga ◽  
Lacramioara Rusu ◽  
Daniela Suteu
Keyword(s):  
Municipal Wastewater ◽  
Organic Dyes ◽  
Raw Materials ◽  
Fixed Bed ◽  
Textile Dye ◽  
Bacillus Sp ◽  
Column Studies ◽  
Fixed Bed Column ◽  
Residual Biomass ◽  
Wide Range

Residual biomass from various industries represents an important source of valuable compounds, used as raw materials for the production of a wide range of new products and also in various treatment and valorization processes or/and sanitation services, thus responding to the principles of sustainable development, waste recovery, and a green and circular economy. The aim of this work is to make use of residual Bacillus sp. biomass (resulting from a process of removing fatty acids from municipal wastewater) immobilized in alginate that, although it results in large quantities from biotechnological processes, is not reported to be valorized in dye biosorption processes, except in few specific applications. The biosorption potential of residual Bacillus sp. biomass in the reactive Brilliant Red HE-3B textile dye removal from aqueous systems was studied in a fixed-bed column. The effects of various experimental operating parameters, such as bed depth (h), flow rate (Fv), were investigated, and the modeling of experimental data based on Thomas and Yoon–Nelson kinetic models was satisfactorily achieved. The obtained results reconfirm that the studied residual biomass can be also considered as a good biosorbent in dynamic operating system, and can be beneficially used in the treatment of wastewater containing small quantities of organic dyes.

Efficient Electrochemical Oxidation of Charged Cryogel Adsorbed Reactive Dyes in Non-aqueous Media

2018 ◽  
Vol 229 (6) ◽  
Author(s):  
Jian Wang ◽  
Yanan Yan ◽  
Lili Tian ◽  
Qinmei Wang ◽  
Yan Zhang ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Aqueous Media ◽  
Reactive Dyes

Highly efficient and selective photocatalytic CO2 to CO conversion in aqueous solution

2020 ◽  
Vol 56 (27) ◽  
pp. 3851-3854 ◽  
Author(s):  
Xiaomin Chai ◽  
Hai-Hua Huang ◽  
Huiping Liu ◽  
Zhuofeng Ke ◽  
Wen-Wen Yong ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Performance ◽  
Aqueous Media ◽  
Highly Efficient ◽  
Co Conversion

A Co-based complex displayed the highest photocatalytic performance for CO2 to CO conversion in aqueous media.

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