Superior adsorption capacity of functionalised straw adsorbent for dyes and heavy-metal ions

Liu, Qiming; Li, Yaoyue; Chen, Huafeng; Lu, Jian; Yu, Guangsuo; Möslang, Maxim; Zhou, Yanbo

doi:10.1016/j.jhazmat.2019.121040

Cited by 303 publications

(88 citation statements)

References 55 publications

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“…Furthermore, there have been adsorption researches where potentially strong adsorptive capacities over 1,000 mg/g to 3,000 mg/g reported by investigators for several purposes treating contaminated water. 28,29 However, the additional step of functionalization of adsorbent may aid cost to the process that still need to be evaluated. 30 In the string of various techniques adopted, adsorption has gained a wider acceptance and effective approach economically.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic treatment of textile dye effluent utilizing microwave‐assisted activated carbon

Maheshwari

Solanki

Ridoy

et al. 2020

Env Prog and Sustain Energy

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Porous microwave irradiated activated carbon has been developed and its application for time efficient ultrasonic treatment of Congo‐red (CR) dye. The maximum removal efficiency of 97.73% was obtained using developed adsorbent with ultrasound treatment. The optimum parameters for maximum dye removal were obtained that is, contact time of 2 hr, adsorbent dose of 0.2 g, neutral pH, room temperature, and initial CR‐effluent concentration of 10 mg/l. Adsorption isotherms models, kinetics of the process, and thermodynamic analysis have been evaluated to investigate the adsorption performance. The pseudo second order rate kinetics (R2 = 0.99) and Langmuir equilibrium isotherm (R2 = 0.99) were well fitted to the experimental data. It has been found that microwave synthesized method was better technique in terms of energy savings, and ultrasonic treatment approach was efficient technique in terms of operational time. The combination of microwave‐ultrasonic reported to have an adsorptive capacity of 75.75 mg/g with least energy‐cost consuming approach.

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Section: Introductionmentioning

confidence: 99%

Ultrasonic treatment of textile dye effluent utilizing microwave‐assisted activated carbon

Maheshwari

Solanki

Ridoy

et al. 2020

Env Prog and Sustain Energy

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“…As reported in this study, the abundant carboxyl and amino groups added to the composite structure have provided a high adsorption capacity of dyes removal. In particular, the adsorption capacities for MB and MO reached 120.84 and 3053.48 mg/g, respectively, which were 3 and 54 times higher than those of unmodified straw [10].…”

Section: Polymer-based Adsorbents For Dye Removalmentioning

confidence: 85%

Current Advances of Polymer Composites for Water Treatment and Desalination

Berber

2020

Journal of Chemistry

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Over the past five years, a lot of research activities in polymer composites were done in order to improve environmental sustainability and to present advantages for commercial applications of water treatment and desalination. Polymers offered tunable properties, improved processability, remarkable stability, high surface area for fast decontamination, selectivity to eliminate different pollutants, and cost-cutting of water treatment. Hence, the development of polymeric materials is one of the future directions to meet the environmental water standards and to supply the water requirements of the growing populations. This review highlighted the very recent achievements in fabrication, characterization, and applications of polymeric composites used for water treatment and desalination. The polymeric modifications, the addition of functional groups, and the assemblies of nanomaterials were also discussed in detail. In particular, great attention was paid to the recent advances in polymer/polymer composites, polymer/carbon composites, and polymer/clay composites, presenting their usage in the removal of various types of contaminants, e.g., metal ions, dyes, and other toxic pollutants. The review also summarized the main advantages and disadvantages of the different adsorbent materials. Specific attention was paid to the mechanism of adsorption, including chemisorption and physisorption mechanisms. In addition, the challenges and the future perspectives were identified to reach the optimal performance of the different adsorbents.

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“…Figure 6 presents the nonlinear fitting results of the Langmuir and Freundlich models, and Table 2 summarizes the calculated isotherm parameters for the removal of Co 2+ and TT using magnetically responsive biomass as the adsorbent. The higher coefficients of determination ( R 2 ) of the Langmuir model for both Co (0.980) and TT (0.961) removal suggested that the adsorption behavior could be attributed to the monolayer chemical adsorption mechanisms [ 28 ]. Moreover, reflecting values of affinity constant b , the magnetic biosorbent exhibited considerably higher affinity for TT (0.0072 L μmol −1 ) compared to Co 2+ ions (0.0025 L μmol −1 ).…”

Section: Resultsmentioning

confidence: 99%

Magnetically Functionalized Moss Biomass as Biosorbent for Efficient Co2+ Ions and Thioflavin T Removal

et al. 2020

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Microwave synthesized iron oxide nanoparticles and microparticles were used to prepare a magnetically responsive biosorbent from Rhytidiadelphus squarrosus moss for the rapid and efficient removal of Co2+ ions and thioflavin T (TT). The biocomposite was extensively characterized using Fourier transformed infrared (FTIR), XRD, SEM, and EDX techniques. The magnetic biocomposite showed very good adsorption properties toward Co2+ ions and TT e.g., rapid kinetics, high adsorption capacity (218 μmol g−1 for Co and 483 μmol g−1 for TT), fast magnetic separation, and good reusability in four successive adsorption–desorption cycles. Besides the electrostatic attraction between the oxygen functional moieties of the biomass surface and both Co2+ and TT ions, synergistic interaction with the –FeOH groups of iron oxides also participates in adsorption. The obtained results indicate that the magnetically responsive biocomposite can be a suitable, easily separable, and recyclable biosorbent for water purification.

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Superior adsorption capacity of functionalised straw adsorbent for dyes and heavy-metal ions

Cited by 303 publications

References 55 publications

Ultrasonic treatment of textile dye effluent utilizing microwave‐assisted activated carbon

Ultrasonic treatment of textile dye effluent utilizing microwave‐assisted activated carbon

Current Advances of Polymer Composites for Water Treatment and Desalination

Magnetically Functionalized Moss Biomass as Biosorbent for Efficient Co2+ Ions and Thioflavin T Removal

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