Biodegradation of azo dye-containing wastewater by activated sludge: a critical review

Vasconcelos, Grazielly Maria Didier de; Mulinari, Jéssica; Souza, Selene de Arruda Guelli Ulson de Maria; Oliveira, Débora de

doi:10.1007/s11274-021-03067-6

Cited by 30 publications

(7 citation statements)

References 102 publications

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“…The wide application of these chemicals in various sectors leads to environmental and health concerns. While existing reports focus predominantly on environmental pollution caused by these auxiliaries, 3,4 there is limited literature on their health impacts, particularly regarding respiratory system exposure in occupational settings.…”

Section: Introductionmentioning

confidence: 99%

Misdiagnosis Diagnosis of Pneumocystis Pneumonia as Chemical Pneumonitis

Zhou,

Jiang,

Kong

et al. 2024

IDR

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Background: Auxiliaries, a mixed chemicals, for printing and dyeing characterized by their diverse range and complex chemical compositions are commonly utilized in the textile industry. These chemicals can lead to environmental contamination and pose health risks to humans. Case Description: A 29-year-old man who worked in a printing and dyeing factory in Suzhou, China, reported having tightness in his chest and coughing. Despite seeking medical treatment at several hospitals, the initial diagnosis remained elusive. High-resolution chest CT scans showed multifocal lesions in both lungs. The patient had no significant medical history, and the respiratory symptoms only surfaced after exposure to dyeing auxiliaries. Physicians initially suspected chemical pneumonitis due to occupational exposure. However, a subsequent evaluation at a hospital specializing in occupational diseases led to a diagnosis of AIDS and pneumocystis pneumonia. Conclusion:This case underscores the importance of comprehensive clinical diagnosis to avoid biases and reduce the incidence of misdiagnosis.

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Section: Introductionmentioning

confidence: 99%

Misdiagnosis Diagnosis of Pneumocystis Pneumonia as Chemical Pneumonitis

Zhou,

Jiang,

Kong

et al. 2024

IDR

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“…More than 10 000 azo dyes are available on the global market due to their cost-effective synthetic procedures, stability, robust structures, durability, resistance to light and moisture, and availability of different shades [11]. Azo dyes are toxic, as reduction at the azo linkage generates aromatic amines such as aniline and toluidine, as well as other derivatives such as benzidine, which are more hazardous than the parent dye and carcinogenic [12]. Usage of wastewater containing industrial effluent for irrigation inhibits crop productivity and indirectly enters the food chain [13].…”

Section: Introductionmentioning

confidence: 99%

Adsorptive Potential of Orange Peel Biochar for Removal of Basic Red 46 Dye and Phytotoxicity Analysis

Kapoor

Sivamani²

2023

Chem Eng & Technol

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This study assessed the sorption ability of orange peel biochar (OPB) for the removal of Basic Red 46 (BR46) dye. Batch trials were conducted to examine the effects of pH, time, initial dye concentration, dosage, temperature, and particle size on BR46 removal from aqueous solution. Maximum removal by OPB of 94 % was observed at pH 9 and an initial dye concentration of 100 mg L -1 . The surface morphology of OPB was characterized by scanning electron microscopy. Equilibrium data were well fitted to the Langmuir model with maximum sorption capacity of 7.36 mg g -1 . Adsorption kinetics and thermodynamics revealed a pseudo-second-order mechanism, chemisorption, and an exothermic process. Phytotoxicity studies revealed that OPB-treated effluent can be used for irrigation. Thus, OPB could be a potential adsorbent for BR46 removal.

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“…At the same time, trace amounts of dye can lead to severe environmental and health hazards as some azo dyes are toxic, carcinogenic, and mutagenic [14,15]. The presence of these synthetic dyes can also hamper various biological activities [16]. Therefore, it is important to implement tight regulations for their treatment and disposal.…”

Section: Introductionmentioning

confidence: 99%

Microbial Degradation of Azo Dyes: Approaches and Prospects for a Hazard-Free Conversion by Microorganisms

Ngo

Tischler

2022

IJERPH

100

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Azo dyes have become a staple in various industries, as colors play an important role in consumer choices. However, these dyes pose various health and environmental risks. Although different wastewater treatments are available, the search for more eco-friendly options persists. Bioremediation utilizing microorganisms has been of great interest to researchers and industries, as the transition toward greener solutions has become more in demand through the years. This review tackles the health and environmental repercussions of azo dyes and its metabolites, available biological approaches to eliminate such dyes from the environment with a focus on the use of different microorganisms, enzymes that are involved in the degradation of azo dyes, and recent trends that could be applied for the treatment of azo dyes.

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Biodegradation of azo dye-containing wastewater by activated sludge: a critical review

Cited by 30 publications

References 102 publications

Misdiagnosis Diagnosis of Pneumocystis Pneumonia as Chemical Pneumonitis

Misdiagnosis Diagnosis of Pneumocystis Pneumonia as Chemical Pneumonitis

Adsorptive Potential of Orange Peel Biochar for Removal of Basic Red 46 Dye and Phytotoxicity Analysis

Microbial Degradation of Azo Dyes: Approaches and Prospects for a Hazard-Free Conversion by Microorganisms

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