Adsorptive removal of methylene blue, tetracycline and Cr(VI) from water using sulfonated tea waste

Ahsan, Ariful; Krishna, Katla Sai; Islam, Md. Tariqul; Hernández-Viezcas, José Á.; Martinez, L. M.; Díaz-Moreno, Carlos A.; López, Jörge A.; Singamaneni, Srinivasa Rao; Bañuelos, Jose; Gardea‐Torresdey, Jorge L.; Noveron, Juan C.

doi:10.1016/j.eti.2018.04.003

Cited by 94 publications

(43 citation statements)

References 51 publications

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“…To understand the kinetics mechanism, two well-known kinetic models were employed such as pseudo-first-order (PSO) and pseudo-second-order (PSO) model. A detailed description of these models is presented in Table S3 [2,7,34]. The PSO kinetic fitting curves and the results obtained from the nonlinear regression analysis are presented in Fig.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

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Process optimisation of methylene blue sequestration onto physical and chemical treated coffee husk based adsorbent

Murthy

Gowrishankar

2020

SN Appl. Sci.

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Coffee husk (CH) was physically and chemically treated with autoclaving (SCH) and NaOH (NCH) to develop low-cost adsorbent for the removal of methylene blue (MB) from synthetic wastewater, and their adsorption efficiencies were evaluated in batch mode. The prepared adsorbent was characterised by SEM, FTIR and point of zero charge. The central composite rotatable design (CCRD) was employed to optimise the adsorption process parameters such as pH, adsorbent dosage and initial MB concentration. The second-order quadratic model fitted best with the experimental adsorption data, and ANOVA results showed that the developed model was significant. The linear terms in the model significantly influence the adsorption capacity of SCH and NCH, but interaction terms were not significant. At optimised conditions, the developed adsorbents can remove > 90% of MB from the aqueous solution. Freundlich model showed a better fit with the adsorption isotherm data with R 2 greater than 0.95. Kinetics of MB adsorption onto SCH and NCH followed the pseudo-second-order model. The maximum monolayer adsorption capacity was found to be 129 and 200 mg/g for SCH and NCH, respectively. The present study showed that pretreated coffee husk waste can be used as an alternative for expensive adsorbents for the removal of dyes from wastewater.

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Section: Adsorption Kineticsmentioning

confidence: 99%

“…for removal of dyes from wastewater [3,6,7]. Among these methods, adsorption has emerged as an effective and economical alternative due to its ease of operation, simplicity of design, insensitivity to toxic substances and complete amputation of pollutants rather than getting degraded to hazardous intermediates [8,9].…”

Section: Introductionmentioning

confidence: 99%

Process optimisation of methylene blue sequestration onto physical and chemical treated coffee husk based adsorbent

Murthy

Gowrishankar

2020

SN Appl. Sci.

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“…Nowadays, finding a substitute for GAC is a growing and attractive research area for the researcher. Low-cost adsorbents produced from agricultural and industrial waste, are used in the removal of ABs from WW, for example, activated carbon produced from Jerivá 83 , Alfalfa hays and pine wood [88][89][90][91] , sawdust 92 , rice straw and swine manure 93 , macadamia nut shells 94 , dried duckweed 37 , Trapa natans husk 9 , Albizia lebbeck seed pods 93 , hazelnut shell 36,37,94,95 , coal fly ash 96 , and decaffeinated tea and coffee waste 88,94,97,98 . The properties of these adsorbents and their removal efficiencies are summarized in Table 5.…”

Section: Removal Processes and Mechanisms Adsorptionmentioning

confidence: 99%

Proclivities for prevalence and treatment of antibiotics in the ambient water: a review

et al. 2020

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In the intial two decades of the twenty-first century, antibiotic (AB) resistance in human pathogens has emerged as a major challenge for water, sanitation, and public health. Considering these challenges, we critically reviewed AB-related studies with particular emphasis on their (i) patterns of consumption, (ii) pathway prevalences and environmental implications in ambient waters, and (iii) benefits and limitations of existing AB removal/purging techniques. We found that lifestyle, land use, urbanization, the ease of availability, and the tendency of the medical practitioners to recommend ABs are the key factors governing the AB use pathway and enrichment in the environment. In the developing world, the most prevalent group of ABs is quinolone, whereas in the developed world, older-generation AB groups are most prevalent. Further, enormous variability in the consumption of ABs around the globe is explicitly highlighted in this study. Ciprofloxacin has been reported in the highest concentration among all the ABs with 28–31 mg L−1 in the raw wastewater of the Indian subcontinent. We found that adsorption may be one of the most efficient AB removal techniques, and NaOH-activated carbon prepared from Macadamia nut shells is the most effective adsorbent identified to date. The literature showed that the Langmuir isotherm and pseudo-second-order kinetic model explain the AB adsorption mechanism most effectively. The future challenge lies in developing advanced protocols and markers to prioritize the strategy and simulate the ecotoxicities of the individual and a mixture of ABs.

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“…Meanwhile, among wastewater treatment methods, adsorption is one of the most applicable techniques used to remove pollutants from sewage because of several reasons related to cost-efficiency, easy-to-fabricate, ecofriendliness, and the ability to recycle. It is reported that there have various types of materials being used to remove contaminants from wastewater, among which are activated charcoal, chitosan, orange peels, porous materials, etc [11][12][13][14][15]. One of the disadvantages that make activated carbon less useful is the capability to recycle.…”

Section: ■ Introductionmentioning

confidence: 99%

Microwave-Assisted Preparation of Magnetic Citric Acid-Sugarcane Bagasse for Removal of Textile Dyes

Anh

Phuc

et al. 2020

Indones. J. Chem.

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Wastewater from industries has been a serious issue that both manufactures and authorities raise concerns since it brings tremendous demerits to the surrounding environment and human well-being. Therefore, an appropriate treatment method should be applied before being discharged into the environment. In this paper, sugarcane bagasse was modified with citric acid and then used to load the suspension of Fe3O4 nanoparticles to form a nanocomposite of magnetic citric acid-modified sugarcane bagasse. The properties of prepared materials were investigated by a variety of modern methods such as X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FT-IR), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and a Vibrating sample magnetometer (VSM). The adsorptive capacity of prepared materials was investigated with methylene blue as the typical adsorbate. The decolonization effectiveness was increased with increasing contact time and declined with rising initial dye concentration. The higher removal efficiency was observed for the basic medium in comparison with the acidic medium. Additionally, the results showed that more than 12.42 mg/g (98%) of cationic yellow 51, and basic red 46 dyes were removed after 30 min.

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Adsorptive removal of methylene blue, tetracycline and Cr(VI) from water using sulfonated tea waste

Cited by 94 publications

References 51 publications

Process optimisation of methylene blue sequestration onto physical and chemical treated coffee husk based adsorbent

Process optimisation of methylene blue sequestration onto physical and chemical treated coffee husk based adsorbent

Proclivities for prevalence and treatment of antibiotics in the ambient water: a review

Microwave-Assisted Preparation of Magnetic Citric Acid-Sugarcane Bagasse for Removal of Textile Dyes

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