Amine modified tannin gel for adsorptive removal of Brilliant Green dye

Akter, Nahida; Hossain, Md. Asjad; Hassan, Mohammad Jobaer; Amin, Md. Khairul; Elias, Md.; Rahman, Mohammed M.; Asiri, Abdullah M.; Siddiquey, Iqbal Ahmed; Hasnat, Mohammad A.

doi:10.1016/j.jece.2016.01.013

Cited by 85 publications

(29 citation statements)

References 35 publications

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“…Hence, all the subsequent batch experiments were performed for time of 60 min. Same trend was also observed and reported in [8,45] for the adsorption of brilliant green and direct yellow 50 (DY50) dyes, respectively.…”

Section: Effect Of Contact Time and Initial Mg Concentrationsupporting

confidence: 85%

Adsorption of Malachite Green Dye from Liquid Phase Using Hydrophilic Thiourea-Modified Poly(acrylonitrile-co-acrylic acid): Kinetic and Isotherm Studies

Adeyi

Jamil

Abdullah

et al. 2019

Journal of Chemistry

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Thiourea-modified poly(acrylonitrile-co-acrylic acid) (TU-poly(AN-co-AA)) adsorbent was a surface modification of poly(acrylonitrile-co-acrylic acid) synthesized by facile redox polymerization. Surface functionalization with thiourea was carried out to provide hydrophilicity on the surface of a polymeric adsorbent. Fourier transform infrared (FTIR) spectrometer, scanning electron microscope (SEM), and Zetasizer characterized the morphology and structures of TU-poly(AN-co-AA). Copolymerization of poly(acrylonitrile-co-acrylic acid) and its successful incorporation of the thioamide group was confirmed by the FTIR spectra. The SEM micrographs depicted uniform and porous surface morphologies of polymeric particles. The average diameter of modified and unmodified poly(acrylonitrile-co-acrylic acid) was 289 nm and 279 nm, respectively. Zeta potentials of TU-poly(AN-co-AA) revealed the negatively charged surface of the prepared polymer. Adsorption capacities of hydrophilic TU-poly(AN-co-AA) were investigated using malachite green (MG) as an adsorbate by varying experimental conditions (pH, initial concentration, and temperature). Results showed that the pseudo-second-order reaction model best described the adsorption process with chemisorption being the rate-limiting step. Furthermore, Elovich and intraparticle diffusions play a significant role in adsorption kinetics. The equilibrium isotherm has its fitness in the following order: Freundlich model > Temkin model > Langmuir model. Thermodynamic analysis indicates that the sorption process is spontaneous and exothermic in nature. The reusability results suggested potential applications of the TU-poly(AN-co-AA) polymer in adsorption and separation of cationic malachite green dye from wastewater.

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Section: Effect Of Contact Time and Initial Mg Concentrationsupporting

confidence: 85%

Adsorption of Malachite Green Dye from Liquid Phase Using Hydrophilic Thiourea-Modified Poly(acrylonitrile-co-acrylic acid): Kinetic and Isotherm Studies

Adeyi

Jamil

Abdullah

et al. 2019

Journal of Chemistry

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“…The selected weight loss is altered with a slight increase in thermal stability. This difference of weight loss in the thermogram may be related to higher stability of material formed through the incorporation of dye onto biomass [3,48].…”

Section: Thermal Gravimetric Analysis (Tga)mentioning

confidence: 99%

Biosorption of acid yellow-99 using mango (Mangifera indica) leaf powder, an economic agricultural waste

et al. 2019

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The competency of mango leaf powder (MLP), an eco-friendly and cost-effective adsorbent, has been extensively studied for the removal of a carcinogenic azo dye, acid yellow-99 (AY-99), from simulated wastewater on principal interest in combating water pollution and to comprehend the mechanisms of the phenomenon. Optimum dye adsorption occurs at pH 2.5, whereas the temperature has no significant effect. MLP can effectively adsorb 708.15 mg g −1 of dye as a function of the initial dye concentration with excellent fitting to the Langmuir isotherm model illustrating monolayer adsorption. The process is rather swift to be completed within ~ 160 min following film diffusion model and pseudo-second-order rate kinetics. The magnitude of hindrance exerted by NaCl in dye adsorption is found to be quite insignificant. The biomass is competent enough for anionic dye decolourization in the binary mixture (AY-99 + AR-88) determined by the first-order derivative spectrophotometric method. Thermodynamically the process is spontaneous, endothermic and entropy-driven. Zeta potential, XRD, SEM-EDXA and X-ray elemental mapping analyses have been used to assess the morphological changes and the mechanisms of dye interaction with MLP. FTIR spectroscopy and chemical modification of functional groups of biomass establish the major contribution of hydroxyl groups for effective dye decolourization through complexation and electrostatic interactions.

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“…The FTIR spectrum of mimosa tannin can be interpreted according to [53]. In this study, the powder was measured before and after adsorption ( Figure 4) and highlighted that the adsorption of ammonia significantly modified the profile of the spectrum presenting three new absorbances: (1) In the region in red between 1700 and 1630 cm −1 the H-N-H scissoring vibration of ammonia occurred, while (2) in the area between 1200 and 800 the N-H wagging took place [54], and (3) the clear band signal at around 1350 cm −1 might be due to the complexation of amino groups with tannin [55], with similar mechanism occurring for vegetable leather tanning [56].…”

Section: Adsorption From Aqueous Ammonia Solutionmentioning

confidence: 99%

Mitigation of Ammonia Emissions from Cattle Manure Slurry by Tannins and Tannin-Based Polymers

et al. 2020

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With the extensive use of nitrogen-based fertilizer in agriculture, ammonia emissions, especially from cattle manure, are a serious environmental threat for soil and air. The European community committed to reduce the ammonia emissions by 30% by the year 2030 compared to 2005. After a moderate initial reduction, the last report showed no further improvements in the last four years, keeping the 30% reduction a very challenging target for the next decade. In this study, the mitigation effect of different types of tannin and tannin-based adsorbent on the ammonia emission from manure was investigated. Firstly, we conducted a template study monitoring the ammonia emissions registered by addition of the tannin-based powders to a 0.1% ammonia solution and then we repeated the experiments with ready-to-spread farm-made manure slurry. The results showed that all tannin-based powders induced sensible reduction of pH and ammonia emitted. Reductions higher than 75% and 95% were registered for ammonia solution and cattle slurry, respectively, when using flavonoid-based powders. These findings are very promising considering that tannins and their derivatives will be extensively available due to the increasing interest on their exploitation for the synthesis of new-generation “green” materials.

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Amine modified tannin gel for adsorptive removal of Brilliant Green dye

Cited by 85 publications

References 35 publications

Adsorption of Malachite Green Dye from Liquid Phase Using Hydrophilic Thiourea-Modified Poly(acrylonitrile-co-acrylic acid): Kinetic and Isotherm Studies

Adsorption of Malachite Green Dye from Liquid Phase Using Hydrophilic Thiourea-Modified Poly(acrylonitrile-co-acrylic acid): Kinetic and Isotherm Studies

Biosorption of acid yellow-99 using mango (Mangifera indica) leaf powder, an economic agricultural waste

Mitigation of Ammonia Emissions from Cattle Manure Slurry by Tannins and Tannin-Based Polymers

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