A bottom-up approach to select microbes from textile wastewater for detoxification of aromatic amine and azo dye in a single stage

Rawat, Deepak; Sharma, Udita; Yadav, Archana; Poria, Pankaj; Farooqi, Furqan; Pani, Balaram; Mukherjee, Paromita; Singh, Mrinalini; Sharma, Raghav; Mishra, Vandana

doi:10.1016/j.jwpe.2023.103668

Cited by 14 publications

(2 citation statements)

References 63 publications

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“…There are several methods for removing dyes from wastewater–physical methods include adsorption, coagulation/flocculation, and filtering; chemical techniques include electro-Fenton, photocatalysis, and ozonation; and biological methods involve the use of enzymes and microbes, as well as biosorption and biodegradation . However, adsorption using various sorbents such as carbon-based materials, metal oxides, bio-adsorbents, and polymer-based materials, is often the preferred method due to its ease of use, low energy requirement, and high efficiency .…”

Section: Introductionmentioning

confidence: 99%

Almond and Walnut Shell Activated Carbon for Methylene Blue Adsorption

McCaffrey,

Torres,

Chiou

et al. 2024

ACS Sustainable Resour. Manage.

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Activated carbon (AC) from nutshells has the potential to be an economically attractive product. This study developed ACs from almond and walnut shells and compared their performance against two commercial ACs (Calgon Carbon Filtersorb 400 and Kuraray YP50) in adsorbing methylene blue (MB) at various concentrations. Activated carbons were generated from nutshell biochar using 2 levels of activation to investigate the effect of activation residence time on material properties including pore development and MB adsorption. Raw nutshells, nutshell biochars, and nutshell ACs were characterized using elemental (CHNSO) analysis, proximate analysis, thermogravimetric analysis, activation kinetics, Fourier transform infrared (FTIR), scanning electron microscopy (SEM), MB adsorption testing, Brunauer-Emmett-Teller (BET) surface area and pore size distribution, and linear regression analysis on incremental pore volume and methylene blue adsorption capacity. Results demonstrated that almond and walnut shells can be used to make activated carbon that has a similar or better methylene blue adsorption performance than the tested commercial carbons. Almond shell, walnut shell, and YP50 and Filtersorb 400 activated carbons showed MB adsorption capacities of 440, 358, 487, and 310 mg g −1 , respectively. Physical activation using carbon dioxide led to enhanced micropore development, and specifically, greater volume of pores with widths between 8-18 Å led to higher MB adsorption capacity. Activated carbon manufactured from nutshells shows significant potential for wastewater applications as well as other applications requiring microporous carbon.

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Section: Introductionmentioning

confidence: 99%

Almond and Walnut Shell Activated Carbon for Methylene Blue Adsorption

McCaffrey,

Torres,

Chiou

et al. 2024

ACS Sustainable Resour. Manage.

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“…First, the dyes present in the wastewater can absorb light, diminishing the water body's transparency, leading to decreased oxygen levels and impacting aquatic ecosystems. Second, certain dyes in the mix are synthetic and contain aromatic amines, which are known to be mutagenic and carcinogenic, posing additional environmental and health risks [18][19][20]. Metal complex dyes and certain catalysts, like antimony acetate, antimony trioxide, or glycol antimony, consist of heavy metals that have the propensity to dissolve in water, presenting a significant hazard due to their high toxicity [21][22][23].…”

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confidence: 99%

Recent advances of piezo‐catalysis and photocatalysis for efficient environmental remediation

Alshammari

2024

Luminescence

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The efficient degradation of organic pollutants in diverse environmental matrices can be achieved through the synergistic application of piezo‐catalysis and photocatalysis. The focus of this study is on understanding the fundamental principles and mechanisms that govern the collaborative action of piezoelectric and photocatalytic materials. Piezoelectric nanomaterials, under mechanical stress, generate piezo‐potential, which, when coupled with photocatalysts, enhances the generation and separation of charge carriers. The resulting cascade of redox reactions promotes the degradation of a wide spectrum of organic pollutants. The comprehensive investigation involves a variety of experimental techniques, including advanced spectroscopy and microscopy, to elucidate the intricate interplay between mechanical and photoinduced processes. The influence of key parameters, such as material composition, morphology, and external stimuli on the catalytic performance, is systematically explored. This study contributes to the increasing knowledge of environmental remediation and lays the foundation for the development of advanced technologies using piezo and photocatalysis for sustainable pollutant removal.

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