Enhanced removal of Congo red dye from aqueous solution by surface modified activated carbon with bacteria

Wang, A.; Liu, C.; Ge, Xinyu; Meng, Weile; Pi, Yongrui

doi:10.1111/jam.15100

Cited by 11 publications

(4 citation statements)

References 35 publications

(43 reference statements)

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“…This suggests that the decolorization of CR by JAS1 effectuates an adsorption phenomenon in addition to its enzymatic degradation. Many studies have previously reported CR decolorization by microbes following its surface adsorption [7,36,[55][56][57]. Moreover, many studies report the specific use of CR to identify Agrobacterium isolates that produce curdlan (an EPS) because of its affinity with these sugars [58,59].…”

Section: Congo Red Adsorbs To the Jas1 Surfacementioning

confidence: 99%

Reactive Black-5, Congo Red and Methyl Orange: Chemical Degradation of Azo-Dyes by Agrobacterium

Kaur

Mudgal

Negi

et al. 2023

Water

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The commercial processing of various biomaterials extensively uses azo dyes (including reactive, direct, acidic, and basic dyes). These industrial applications produce wastewater containing a large volume of solubilized azo dye and hydrolyzed by-products. The treatment of such wastewater is primarily carried out by chemical and, to an extent, physical methods, which lack selectivity and efficiency. Notably, the chemical methods employ free radicals and oxidizing agents that further increase the chemical waste and produce non-biodegradable side-products. Therefore, there is an increasing trend of using microbial-assisted methods. The current study identified a specific Agrobacterium strain (JAS1) that degraded the three structurally distinct azo dyes (Reactive Black 5, Methyl Orange, Congo Red). JAS1 can tolerate high concentrations and be used to perform the in-solution degradation of azo dyes, respectively: Methyl Orange (5.5 g/L and 5.0 g/L), Congo Red (0.50 g/L and 0.40 g/L), and Reactive Black 5 (0.45 g/L and 0.40 g/L). Our study elucidated the molecular mechanisms (primarily enzymatic degradation and adsorption) responsible for the JAS-1-assisted decoloration of azo dyes. The JAS-1-assisted degraded products from these azo dyes were found biodegradable as the germination and seedling growth of wheat seeds were observed. To enhance the scope of the study, JAS1-assisted decolorization was studied for cellulosic materials, indicating a potential application in de-inking and de-dyeing process in recycling industries.

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Section: Congo Red Adsorbs To the Jas1 Surfacementioning

confidence: 99%

Reactive Black-5, Congo Red and Methyl Orange: Chemical Degradation of Azo-Dyes by Agrobacterium

Kaur

Mudgal

Negi

et al. 2023

Water

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“…All adsorption experiments were conducted using 50-mL glass tubes in accordance with our previous work (Wang et al, 2021;Pi et al, 2022). To investigate the adsorption isotherm equilibrium, 50.0 mL of a NOR/LEV solution was mixed with 5 mg Fe 3 O 4 or a magnetic microrobot, with initial NOR/LEV concentrations ranging from 10 to 50 mg/L.…”

Section: Adsorption Experimentsmentioning

confidence: 99%

Pick-up of fluoroquinolones from the aqueous phase via magnetically propeled microrobots: kinetics, thermodynamics, and site energy distribution analysis

et al. 2023

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Removing fluoroquinolones (FQs) in marine culture tailwater is crucial for the coastal marine environment. The application of a bacteria-based microrobot for FQ removal was discussed. Norfloxacin (NOR) and levofloxacin (LEV) had static maximum adsorption capacities of 114.8 and 49.4 mg/g, respectively, by a magnetic microrobot. The experimental results of NOR adsorption by a magnetic microrobot were well supported by the Langmuir isotherm and Elovich kinetic models. Both the Langmuir isotherm model and the pseudo-second-order kinetic model may be able to accurately represent the LEV adsorption process. The mass transfer mechanism of the NOR and LEV adsorptions was divided into two steps and described better using the intraparticle diffusion (IPD) model. The exothermic and spontaneity of the sorption process were demonstrated through the study of thermodynamics. The magnetic microrobot’s heterogeneous surface was validated by the examination of site energy distribution. Additionally, this study demonstrated that the majority of the NOR and LEV sorption took place at sites with energies over 4.25 and 17.36 kJ/mol, respectively, supporting the notion that NOR and LEV adsorption constitute physical–chemical processes. Based on the above results, a magnetic microrobot, as a new-style green bio-adsorbent, can potentially be used to remove NOR and LEV from the mariculture in an inexpensive and effective manner.

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“…Among them, the adsorption method has the advantages of low cost, safety, simplicity, and easy recovery. In recent years, the adsorption method has been applied to the removal of dyes and antibiotics in wastewater and has achieved excellent results. , Many traditional materials have been used in adsorption to treat industrial dye wastewater, such as biomaterials, activated carbon, metal oxides, layered dihydroxides, montmorillonite, kaolinite, cellulose, chitosan (CS), zeolite, graphene oxide (GO), calcium alginate, etc. These traditional adsorbents have the limitations of low adsorption performance, complex preparation, and high cost.…”

Section: Introductionmentioning

confidence: 99%

The Defects, Physicochemical Properties, and Surface Charge of MIL-88A (Al) Crystal Were Regulated for Highly Efficient Removal of Anionic Dyes: Preparation, Characterization, and Adsorption Mechanism

Zhao

Wang

et al. 2023

Langmuir

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In this paper, the physicochemical properties, surface charge, and crystal defects of MIL-88A (Al) were controlled by adjusting the ratio of metal ligands and temperature in the synthetic system without the addition of surfactants. The adsorption properties of different crystals for Congo red (CR) were studied. Among them, MIL-88A (Al)-130 and MIL-88A (Al)-d have the best adsorption properties. The maximum adsorption capacities are 600.8 and 1167 mg · g–1, respectively. Compared with MIL-88A (Al)-130, the adsorption performance of MIL-88A (Al)-d was increased by 94.2%, and the adsorption rate was increased by about 4 times. It can be seen that increasing the proportion of metal ligands within a certain range will improve the adsorption capacity. The structure and morphology of the adsorbent were characterized by XRD, FTIR, SEM, EDS, TGA, BET, and zeta potential. The effects of time, temperature, pH, initial solution concentration, and dosage on CR adsorption properties were systematically discussed. The pseudo-second-order kinetic model and Langmuir isothermal model can well describe the adsorption process, which indicates that the adsorption process is a single-layer chemisorption occurring on a uniform surface. According to thermodynamics, this adsorption is an endothermic process. The mechanism of CR removal is proposed as the electrostatic attraction, hydrogen bond, metal coordination effect, π–π conjugation, crystal defect, and pore-filling effect. In addition, MIL-88A (Al)-d has good repeatability, indicating that it is a good material for treating anionic dye wastewater.

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Enhanced removal of Congo red dye from aqueous solution by surface modified activated carbon with bacteria

Cited by 11 publications

References 35 publications

Reactive Black-5, Congo Red and Methyl Orange: Chemical Degradation of Azo-Dyes by Agrobacterium

Reactive Black-5, Congo Red and Methyl Orange: Chemical Degradation of Azo-Dyes by Agrobacterium

Pick-up of fluoroquinolones from the aqueous phase via magnetically propeled microrobots: kinetics, thermodynamics, and site energy distribution analysis

The Defects, Physicochemical Properties, and Surface Charge of MIL-88A (Al) Crystal Were Regulated for Highly Efficient Removal of Anionic Dyes: Preparation, Characterization, and Adsorption Mechanism

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