Adsorption of methyl red from aqueous solution using Bali cow bones (Bos javanicus domesticus) hydrochar powder

Results in Engineering, Год журнала: 2022, Номер 17, С. 100824 - 100824

Опубликована: Дек. 12, 2022

Beef consumption produces a lot of bone waste. Here, We prepared Bali cow bones-based hydrochar material (BCBHP) using the hydrothermal carbonization (HTC) method. The resulting BCBHP was then characterized XRD, FTIR, FESEM-EDX, and BET-BJH. Next, applied to adsorb methyl red in water samples. Adsorption carried out bath system. persisted optimum for 30 min at pH 6 303.15 K, with capacity 7.2 mg g−1. Zeta potential is −24.4 mV suggesting higher electrostatic attraction between dye surface. Methyl adsorption fitted pseudo-second-order kinetics model. on follows Freundlich isotherm model well described by heterolayer pattern. Thermodynamic studies show that processes are spontaneous, exothermic, chemisorption reactions. Moreover, has an excellent reusability performance could be used as promising adsorbent removal wastewater treatment.

Язык: Английский

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Synthesis of highly fluorescent carbon quantum dots from rubber seed shells for the adsorption and photocatalytic degradation of dyes

Scientific Reports, Год журнала: 2023, Номер 13(1)

Опубликована: Авг. 7, 2023

The potentials of biomass-based carbon quantum dot (CQD) as an adsorbent for batch adsorption dyes and its photocatalytic degradation capacity which are congo red (CR) methylene blue (MB) have been conducted in this study. CQDs properties, performance, behaviour, photoluminescence characteristics were assessed using experiments carried out under operating conditions including, temperature, pH dosage. morphological analysis revealed that highly porous, uniform, closely aligned multi-layered. presence hydroxyl, carboxyl carbonyl functional groups indicated the significance oxygenated groups. Spectral confirmed their photoluminescent quality by exhibiting high excitation intensity possessing greenish-blue fluorescence UV radiation. removal percentage adsorbed both CR MB was 77% 75%. Langmuir isotherm pseudo-second-order models fitted results. Thermodynamics process exothermic spontaneous, with excellent reusability stability. efficiency on more than 90% sunlight irradiation obeyed first-order kinetic model. These results demonstrated to be outstanding photocatalyst organic dye degradation.

Язык: Английский

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Advancement in Sustainable Wastewater Treatment: A Multifaceted Approach to Textile Dye Removal through Physical, Biological and Chemical Techniques

ChemistrySelect, Год журнала: 2024, Номер 9(11)

Опубликована: Март 15, 2024

Abstract The global manufacturing sector heavily relies on the textile industry, yet widespread utilization of synthetic dyes within this has raised serious environmental apprehensions, notably regarding wastewater contamination. release untreated containing residual poses a significant risk to both aquatic ecosystems and human well‐being. In reaction issue, considerable efforts have been made develop efficient sustainable methods for removal from wastewater. This comprehensive review paper furnishes in‐depth literature information covering various aspects dyes, including their classification, toxicity effects, evaluation recent advancements in dye technology, emphasizing advantages, limitations, future potential. Various strategies are covered, physical, chemical, biological methods. Physical techniques like adsorption, filtration, membrane technologies contrasted with chemical approaches such as coagulation, precipitation, advanced oxidation processes. Biological include micro‐organisms, fungi, enzymes break down or metabolize compounds. Key considerations critical analysis efficiency, cost‐effectiveness, scalability each method. focuses enzyme breakdown (biological) adsorption (physical) color procedures, which currently considered most effective. It also proposes composite adsorbent, anticipating enhanced efficiency faster through technique.

Язык: Английский

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Bacillus subtilis: As an Efficient Bacterial Strain for the Reclamation of Water Loaded with Textile Azo Dye, Orange II

International Journal of Molecular Sciences, Год журнала: 2022, Номер 23(18), С. 10637 - 10637

Опубликована: Сен. 13, 2022

The azo dye orange II is used extensively in the textile sector for coloring fabrics. High concentrations of it are released into aqueous environments through effluents. Therefore, its removal from wastewater and effluents necessary. Herein, initially, we tested 11 bacterial strains their capabilities degradation dye. It was revealed preliminary data that B. subtilis can more potently degrade selected dye, which thus subsequent experiments. To achieve maximum decolorization, experimental conditions were optimized whereby achieved at: a 25 ppm concentration, pH 7, temperature 35 °C, 1000 mg/L concentration glucose, urea 666.66 NaCl an incubation period 3 days, with hydroquinone as redox mediator at 66.66 mg/L. effects interaction operational factors further confirmed using response surface methodology, optimum 6.45, 17.07 mg/L, time 9.96 h 45.38 be obtained desirability coefficient 1, estimated central composite design (CCD). understand underlying principles metabolites aliquot mixture condition, study steps extracted analyzed GC-MS(Gas Chromatography Mass Spectrometry), FTIR(Fourier Transform Infrared Spectroscopy), 1H carbon 13 NMR(Nuclear Magnetic Resonance Spectroscopy). GC-MS pattern original degraded o-xylene naphthalene. Naphthalene even pure state silica gel column isolation 13C NMR spectroscopic analysis. Phytotoxicity tests on Vigna radiata also conducted results less toxic than parent These emphasize should potential strain bioremediation containing other dyes.

Язык: Английский

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Bioremediation of environmental organic pollutants by Pseudomonas aeruginosa: Mechanisms, methods and challenges

Environmental Research, Год журнала: 2023, Номер 239, С. 117211 - 117211

Опубликована: Окт. 12, 2023

Язык: Английский

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Biotechnological Approach to Treat Textile Dyeing Effluents: A Critical Review Analysing the Practical Applications

Textile & Leather Review, Год журнала: 2024, Номер 7, С. 125 - 152

Опубликована: Янв. 26, 2024

Although the textile industry is one of significant contributors to global economy, approximately 10% annual dye production, amounting 7 × 106 tonnes and spanning a spectrum 10,000 different variants, wasted in dyeing process subsequently released into environment. Following processing stages, this waste contributes environmental pollution, making account for 20% overall industrial water pollution worldwide. Traditional treatment effluents burdensome majority units that are micro-scale enterprises. A challenge there isn't single, commercially viable way efficiently treat wastewater from industries. Scholars several disciplines working together investigate novel approaches assiduously directed at addressing issues by minimising waste, thereby promoting sustainability, circular symbiosis. This study aims address challenges associated with dye-related conducting comprehensive analysis recent research on processes advancements exploration biotechnological methods focused achieving reuse treated water. The review covers processes, traditional, current emerging techniques, it emphasises their use practical situations. Also, efficiency, specificity, friendliness discussed offering comparison benefits drawbacks. holistic remediation approach advocated harmonizing both conventional non-conventional more solution.

Язык: Английский

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Removal of 4-nitrophenol and indigo carmine dye from wastewaters by magnetic copper ferrite nanoparticles: Kinetic, thermodynamic and mechanistic insights

Journal of Saudi Chemical Society, Год журнала: 2023, Номер 27(6), С. 101748 - 101748

Опубликована: Окт. 13, 2023

Magnetic copper ferrite nanoparticles, CuFe2O4-NPs (CFN) were synthesized via a facile sol-gel method for the effective removal of 4-nitrophenol (4-NP) and indigo carmine dye (IC) as typical hazardous organic pollutants from wastewater. The texture, morphology, composition CuFe2O4 NPs thoroughly explored by various physicochemical techniques. Various factors affecting adsorption including effect adsorbent mass, contact time, pH, initial IC concentration, temperatures investigated to determine optimum conditions removal. impact diverse species other coexisting dyes on capacity CFN was investigated. Five isotherms using two-parameters (Tekman, Langmuir, Freundlich) three-parameters (Sips, Redlich-Peterson) models. exhibited maximum 57.4 mg/g according Sips model, with optimal observed at pH 3, time 90 minutes, an mass 0.1 g. Thermodynamic data revealed both endothermic nature random arrangement molecules onto adsorbent. elimination mechanism elucidated. Furthermore, CFN-catalyzed reduction NaBH4 followed first-order kinetics high rate 0.4365 min-1, reflecting catalytic CFN. magnetic features, cost-effectiveness, recyclability, activities towards 4-NP removals made promising catalyst wastewater remediation.

Язык: Английский

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Bioremediation of Azo Dye Brown 703 by Pseudomonas aeruginosa: An Effective Treatment Technique for Dye-Polluted Wastewater

Microbiology Research, Год журнала: 2023, Номер 14(3), С. 1049 - 1066

Опубликована: Авг. 2, 2023

Dye-polluted wastewater poses a serious threat to humans’, animals’ and plants’ health, avoid these health risks in the future, treatment of containing dyes is necessary before its release environment. Herein, biological approach used; textile azo dye brown 703 degraded utilizing Pseudomonas aeruginosa. The bacterial strain was isolated from dumping sites Mingora, Swat. optimization for degradation carried out on nutrient broth medium, which then subjected variety environmental physicochemical conditions nutritional source supplementation being tested. Under micro-aerophilic circumstances, maximum decolorization occurred at 20 ppm concentration within 3 days incubation neutral pH 38 °C. decrease intensity absorbance peak UV–Vis spectrum used measure extent decolorization. Initially, 15 strains were effluent. Out strains, aeruginosa found be most potent degrading bacteria, with around 71.36% optimum conditions. appearance disappearance some new peaks FT-IR analysis after showed that by GC–MS performed helped identifying compounds utilized illustrating under-study process degradation. biodegradation brought about can employed successfully future as an eco-friendly far reaching results.

Язык: Английский

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Revealing the degrading-possibility of methyl red by two azoreductases of Anoxybacillus sp. PDR2 based on molecular docking

Chemosphere, Год журнала: 2024, Номер 351, С. 141173 - 141173

Опубликована: Янв. 15, 2024

Язык: Английский

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In vitro study: methylene blue-based antibacterial photodynamic inactivation of Pseudomonas aeruginosa

Applied Microbiology and Biotechnology, Год журнала: 2024, Номер 108(1)

Опубликована: Янв. 23, 2024

Abstract Pseudomonas aeruginosa is one of the most antibiotic-resistant and opportunistic pathogens in immunocompromised debilitated patients. It considered cause severe skin infections frequently found hospital burn units. Due to its high antibiotic resistance, eliminating P. from quite challenging. Therefore, this study aims assess novel vitro antibacterial activity methylene blue using a 635-nm diode laser determine effective power energy densities for inhibition . The strain was treated with various concentrations at powers 300 mW/cm 2 250 laser’s potency photo-destruction degradation through were also evaluated. Colony-forming unit (CFU)/ml, fluorescence spectroscopy, optical density, confocal microscopy used measure bacterial killing effect. As result, significant decrease 2.15-log 10 , 2.71-log 3.48-log 60, 75, 90 J/cm after excitation MB 240, 300, 360 s respectively. However, maximum CFU observed by 2.54-log 72 4.32-log 108 irradiation. Fluorescence images confirmed elimination bacteria showed degree compared treatment light alone. In conclusion, MB-induced aPDT demonstrated efficacy, which could be potential approach against drug-resistant pathogenic bacteria. Key points • Combination activity. Methylene photosensitizer employed as an alternative antibiotics. promising aeruginosa.

Язык: Английский

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