Recent advances in remediation of synthetic dyes from wastewaters using sustainable and low-cost adsorbents

Siddiqui, Sharf Ilahi; Fatima, Bushra; Tara, Nusrat; Rathi, Geetanjali

doi:10.1016/b978-0-08-102491-1.00015-0

Cited by 26 publications

(21 citation statements)

References 137 publications

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“…The agro-waste can be classified into plant-based and animal-based, depending on the origin of the waste materials. Living organisms such as algal and microbial biomass were also reported to have been used as pollutant adsorbents in water treatment (Siddiqui et al, 2019). The agro-waste based adsorbents are used either in their raw forms or as composites for the removal of different classes of dyes.…”

Section: Agricultural Waste-based Adsorbents For Removal Of Dye Pollumentioning

confidence: 99%

“…Moreover, some of these treatment techniques have limited applications in many parts of developing counties where indiscriminate point source discharges of persistent organic pollutants from industries, including dyes, persist (UNESCO, 2017). However, adsorption method is generally found to be effective for the removal of recalcitrant organic pollutants, including different forms of dyes, due to its simple operating design and conditions, no sort of unwelcoming secondary wastes and low cost of operations especially when non-conventional alternative adsorbents are used (Siddiqui et al, 2019;Chang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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SWOT analysis of agro-waste based adsorbents for persistent dye pollutants removal from wastewaters

Adelodun¹,

Ajibade²,

Sholagberu³

et al. 2020

Environmental Degradation: Causes and Remediation Strategies

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Dyes, especially from textile industries, are significant pollutants in water and wastewater, which have become pervasive in the environs to which they are discharged. The effluents containing different types of dyes have become ubiquitous in the environment. While several treatment techniques have been developed to address the removal of recalcitrant dyes from water and wastewater, the adsorption technique is highly preferred due to its many advantages. However, selecting the appropriate alternative adsorbents with high adsorption capacity to costly activated carbon has continued to receive great attention. This book chapter reviewed the applicability of adsorptive techniques of agro-waste based adsorbents for the removal of dye pollutants from water and wastewater. The mechanisms of persistent dye pollutant removals based on the adsorption processes were adequately described. Further, the strengths, weaknesses, opportunities and threats (SWOT) of using agro-waste materials as alternative adsorbents are also accounted.

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Section: Agricultural Waste-based Adsorbents For Removal Of Dye Pollumentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

SWOT analysis of agro-waste based adsorbents for persistent dye pollutants removal from wastewaters

Adelodun¹,

Ajibade²,

Sholagberu³

et al. 2020

Environmental Degradation: Causes and Remediation Strategies

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“…Around 30 million tonnes of dye was estimated for the global consumption for textiles and was expected to grow up to 3% per annum while 70,000 tonnes of dyes were released to the environment [2]. The population of people who will have allergic to the chemicals will grow up to 60 per cent by year 2020 which was stated in a business week [3,4]. In addition, approximately 280,000 tons of textile dyes are discharged annually worldwide and approximately 10,000 different dyes have been produced and an estimated 8x10 5 tons of synthetic dyes *Corresponding author: mnoraini@uthm.edu.my are used in the textile industry worldwide [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…The population of people who will have allergic to the chemicals will grow up to 60 per cent by year 2020 which was stated in a business week [3,4]. In addition, approximately 280,000 tons of textile dyes are discharged annually worldwide and approximately 10,000 different dyes have been produced and an estimated 8x10 5 tons of synthetic dyes *Corresponding author: mnoraini@uthm.edu.my are used in the textile industry worldwide [4,5]. Natural dyes become an alternative way to the industries when synthetic dyes caused severe problems such as visible residues in the effluent [5] and toxic amines were created [6].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization on Natural Dyes Based on Neem, Henna and Turmeric for Dyeing onotton with Super Hydrophobic Coating

Singam¹,

Marsi²,

Mamat³

et al. 2019

IJIE

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This study is presents the preparation and characterization on natural dyes based on neem, henna and turmeric for dyeing on cotton with superhydrophobic coating. Natural dyes were used to reduce the usage of the synthetic dyes in dyeing process and superhydrophobic coating to maintain the colour of the dyes on the fabric from faded and acts as a self-cleaning. The methodology involved for this study was the extraction process of natural dyes from the neem, henna and turmeric. There are eight different concentrations consists of 0.25g/ml, 0.5g/ml, 0.75g/ml, 1.0g/ml, 1.25g/ml, 1.50g/ml, 1.75g/ml and 2.0g/ml. The mechanical test involved is abrasion test for evaluation the resists wear caused by flat rubbing contact with another materials. Henna coated co tton fabrics have lower percentage weight loss compared to neem and turmeric coated cotton fabrics and uncoated cotton fabrics. The weight percentage loss for henna coated cotton fabrics at 2.0g/ml was 3.32%, for neem coated cotton fabrics at 2.0g/ml was 3.33% and turmeric at 2.0g/ml concentration was 3.34%. On the other hand, the value for the henna uncoated cotton fabric at 2.0g/ml was at 3.41%, neem at 2.0g/ml concentration was 3.42% and the value for uncoated turmeric at 2.0g/ml was 3.43% respectively. The porosity decreases when the concentration of dyes and superhydrophobic coating applied on the cotton fabrics.

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“…Claycarbon composites con sist mainly of bentonite or kaolin clays and acti vated carbon [10,11]. The use of activated car bon significantly reduces the cost of such com posites, which will allow them to be used effec tively in proceedings instead of expensive syn thetic sorbents [12].…”

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confidence: 99%

Characteristics of New Promising Bentonite Coal Sorbents Modified by Different Compounds

et al. 2021

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Introduction. Bentonite clays are traditional inexpensive and effective adsorbents that have a high potential for removing heavy metals from wastewater due to their abundance, chemical and mechanical stability, high exchange ability, and unique structural properties.Problem Statement. To obtain activated carbon, high-temperature muffle furnaces are used with the consumption of a large amount of electricity, which is economically unprofitable. In addition, the resulting sorbents must be in the form of granules or tablets, have high strength and the ability to be repeatedly used in technological processes.Purpose. Development of a method for the production of low-cost granular sorbents based on bentonite as amineral component, activated carbon, as well as natural production waste (sunflower husk, straw, sawdust, etc. as modifiers), which can be removed from the activation process to increase porosity of these materials.Materials and Methods. Angren brown coal; bentonite of the Navbakhor deposit was used as a sorbent and a basic substance for the granules formation; modifiers were sodium chloride, potassium, chopped straw, sawdust. Methods of thermal decarbonization and activation of the obtained granules under the optimal conditions (950 °С, 45 min) were applied; the bulk density, the specific surface area, pore types and their total volume was determined by optical microscopy and nitrogen adsorption methods.Results. Inexpensive hybrid bentonite-carbon sorbents in the form of high-strength granules were synthesized.The optimal ratio of the main components is Bentonite:Coal = 1 : 2, size (2.5 mm) and strength of granules (83—99%), total pore volume 0.863—1.01 cm3/g, confirmed the presence of macro-, meso- and micropores. The most promising sample has a specific surface area (Langmuir) 184 m2/g.Conclusions. The method for obtaining new effective granular carbon sorbents of low cost, having high sorption capacity relative to organic and inorganic pollutants for purification of industrial process waters has been proposed.

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Recent advances in remediation of synthetic dyes from wastewaters using sustainable and low-cost adsorbents

Cited by 26 publications

References 137 publications

SWOT analysis of agro-waste based adsorbents for persistent dye pollutants removal from wastewaters

SWOT analysis of agro-waste based adsorbents for persistent dye pollutants removal from wastewaters

Preparation and Characterization on Natural Dyes Based on Neem, Henna and Turmeric for Dyeing onotton with Super Hydrophobic Coating

Characteristics of New Promising Bentonite Coal Sorbents Modified by Different Compounds

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