Adsorption of Reactive Red 195 from aqueous medium using Lotus (<i>Nelumbo nucifera</i>) leaf powder chemically modified with dimethylamine: characterization, isotherms, kinetics, thermodynamics, and mechanism assessment

Munagapati, Venkata Subbaiah; Wen, Hsin-Yu; Wen, Jet‐Chau; Gollakota, Anjani R.K.; Shu, Chi‐Min; Lin, Kun‐Yi Andrew; Wen, Jhy-Horng

doi:10.1080/15226514.2021.1929060

Cited by 18 publications

(4 citation statements)

References 61 publications

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“…The separation factor (RL) indicates whether or not the adsorption process occurred favorably (0 < RL < 1.0), unfavorably (RL > 1.0), linearly (RL = 1.0) or irreversibly (RL = 0) (Munagapati et al, 2022). In this study, when Table 2 was examined, the RL values were found to be between 0 < RL < 1.0; this indicated that MB was suitable for adsorption to RC-ECB.…”

Section: Adsorption Isotherms and Kineticsmentioning

confidence: 99%

Investigation of dye removal from water solutions using raw clay and expanded clay ball: Kinetic, isotherm, and thermodynamic

Tulun

2024

Preprint

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This study investigated the removal of methylene blue (MB) dye from aqueous solutions using raw clay (RC) and expanded clay ball (ECB) with different particle sizes ( = < 200 mesh, and > 200 mesh). A series of studies such as operating time (1 to 90 min), RC and ECB dose (0.1 to 4g/L), pH (2 to 10), mixing speed (60 to 180 rpm) and temperature (20 to 45°C) were additionally conducted through the use of a batch system in order to optimize the process. Additionally, this study investigated the concepts of adsorption kinetics, isotherms, and thermodynamics of MB. RC and ECB were characterized through distinct physical – chemical methods including scanning electron microscopy (SEM), energy dispersive x ray spectrometer (EDAX), Fourier transform infrared spectroscopy (FTIR). The structural changes in the surface morphology of ECB caused it to exhibit lower adsorption capacity than RC. The removal occurred rapidly in the first few minutes. RC (20 min.) reached equilibrium faster than ECB (30 min.). Under optimal conditions, removal efficiencies of > 200 mesh RC, =<200 mesh RC, > 200 mesh ECB, =<200 mesh ECB were obtained as 97.5%, 95.76%, 39.26%, 91.81%, respectively. The results show that the pseudo-second order (PSO), with R2 ranging from 0.69 to 1, and the Langmuir isotherm model, with a good fit for the MB removal for all combinations, are in agreement with the experimental data According to the study results, the process was carried out endothermic and physical.

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Section: Adsorption Isotherms and Kineticsmentioning

confidence: 99%

Investigation of dye removal from water solutions using raw clay and expanded clay ball: Kinetic, isotherm, and thermodynamic

Tulun

2024

Preprint

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“…Synthetic dyes are extensively employed in industries such as textiles, food, leather, printing, and pharmaceuticals [6]. These dyes offer superior color fastness properties compared to natural dyes [7].…”

Section: Introductionmentioning

confidence: 99%

Integrating Circular Economy, SBTI, Digital LCA, and ESG Benchmarks for Sustainable Textile Dyeing: A Critical Review of Industrial Textile Practices

2023

Global NEST Journal

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<p>Dyes play a crucial role in various industries, but their environmental impact and potential health risks have raised concerns. This review paper examines the classification and applications of dyes, highlighting the challenges posed by synthetic dyes and the growing interest in natural dyes. The impact of textile dyes on human health, ecosystems, water, soil, and air emissions is explored. The focus then shifts to sustainable dyeing practices in the denim industry, which can significantly reduce its environmental footprint and enhance product sustainability. The adoption of sustainable dyes aligns with circular economy principles, leading to energy and water savings. Collaboration, consumer awareness, and the integration of Life Cycle Assessment (LCA) are essential for driving sustainable dye adoption and promoting circular economy principles. The role of Environmental, Social, and Governance (ESG) factors in sustainable denim dyeing is emphasized, encompassing environmental, social, and governance considerations throughout the supply chain. The need to address greenwashing and validate sustainability claims is discussed, highlighting the importance of certifications and transparency. Chemical dyes are recognized as key contributors to achieving sustainability targets in the denim industry, aligning with the Science Based Targets initiative (SBTi) and reducing carbon emissions. The review concludes by stressing the importance of sustainable dyeing practices, considering water and energy usage, waste generation, and emissions, to minimize the denim industry's environmental impact and achieve sustainability objectives.</p>

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“…From the figure, it could be observed that the azo class of dyes gained a [6] Synthetic dyes are of significant use in numerous industries such as textiles, pharmaceutical, food, printing, leather etc. [7,8]. This is because they have a laudable colour fastness property and higher intensity than the natural fellow [9].…”

Section: Introductionmentioning

confidence: 99%

“…In textile dyeing, several synthetic additives are employed in the process causing harm and biodegradable difficulties [17]. The processing and use of synthetic dyes, however, have been identified by researchers to be harmful to the health and causes several discomforts in the environment [7,17,18]. A study conducted by Salauddin et el.…”

Section: Introductionmentioning

confidence: 99%

Synthetic Dye Application in Textiles: A Review on the Efficacies and Toxicities Involved

Fobiri¹

2022

Text Leather Rev

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The application of dyes in textile colouration has existed for centuries. Dyes are obtained from both natural and synthetic sources. Synthetic dyes are manufactured from chemical compounds and have been placed on a high pedestal in the textile industry due to their improved colour fastness, varied range of pigments and easy application as compared to natural dyes. However, they have been identified to be harmful to the environment and human health by researchers. When effluent containing harmful chemicals like sodium sulphide is discharged into the environment improperly, they cause a lot of diseases and hinder smooth air flow. With current submissions made by researchers on synthetic dyes application as a backbone, this review throws more light on the dangers and benefits involved in the use of synthetic dyes in the textile industry. It also touches on waste management as far as textile dyes are concerned. The application of synthetic dyes, precisely vat, reactive and sulphur dyes are highlighted in the study. With the purpose of addressing appropriate means of curbing undesired hazards caused by textile wastes water, several technological approaches to effluent treatment such as Physical, Chemical and Biological are brought to light in the study. The study recommends the adaptation of waste management principles such as the 5R hierarchy to curb environmental harm caused by synthetic dye effluents.

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Adsorption of Reactive Red 195 from aqueous medium using Lotus (Nelumbo nucifera) leaf powder chemically modified with dimethylamine: characterization, isotherms, kinetics, thermodynamics, and mechanism assessment

Cited by 18 publications

References 61 publications

Investigation of dye removal from water solutions using raw clay and expanded clay ball: Kinetic, isotherm, and thermodynamic

Investigation of dye removal from water solutions using raw clay and expanded clay ball: Kinetic, isotherm, and thermodynamic

Integrating Circular Economy, SBTI, Digital LCA, and ESG Benchmarks for Sustainable Textile Dyeing: A Critical Review of Industrial Textile Practices

Synthetic Dye Application in Textiles: A Review on the Efficacies and Toxicities Involved

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