Synthesis of silver nanoparticle from Vigna unguiculata stem as adsorbent for malachite green in a batch system

Dawodu, Folasegun A.; Onuh, Courage U.; Akpomie, Kovo G.; Unuabonah, Emmanuel I.

doi:10.1007/s42452-019-0353-3

Cited by 27 publications

(15 citation statements)

References 16 publications

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“…About 700,000 tons of over 100,000 commercial dyes are produced annually in industries, which makes dye the most common water pollutant 1 . Most dyes are used in the textile and paper industries and are frequently encountered in the effluents subsequently released into the environment 2 , 3 . These dyes present in the environmental waters can be carcinogenic, mutagenic, and result in chronic illnesses in humans and aquatic organisms 3 , 4 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and regeneration of an inorganic–organic nanocomposite (ZnO@biomass) and its application in the capture of cationic dye

Akpomie

Conradie

2020

Sci Rep

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Despite the efficiency of ZnO nanoparticle (NPs) composite adsorbents in the adsorption of various pollutants, there is presently no report on the combo of Znonps with biomass for adsorption. Besides, there is a dearth of information on the biosorption of celestine blue (ceB), a dye used in the nuclear and textile industry. in this study, biogenic-chemically mediated synthesis of a composite (Zno@Acp) was prepared by the impregnation of Znonps onto Ananas comosus waste (Acp) for the adsorption of ceB. the SeM, eDX, ftiR, XRD, Bet, and tGA characterizations showed the successful presence of Znonps on the biomass to form a nanocomposite. the uptake of ceB was enhanced by the incorporation of ZnONPs on ACP. A faster CEB adsorption onto ZnO@ACP (120 min) compared to ACP (160 min) was observed. The Langmuir (R 2 > 0.9898) and pseudo-second-order (R 2 > 0.9518) models were most appropriate in the description of the adsorption process. the impregnation of Znonps onto the biomass enhanced the spontaneity of the process and displayed endothermic characteristics. High CEB desorption of 81.3% from the dye loaded ZnO@ACP as well as efficient reusability showed the efficacy of the prepared nanocomposite for CEB adsorption. The pollution of environmental water from industrial effluents contaminated with industrial by-products is on the rise. This is attributed to the rapid growth of industries, hence the increase in industrial activities across the globe. About 700,000 tons of over 100,000 commercial dyes are produced annually in industries, which makes dye the most common water pollutant 1. Most dyes are used in the textile and paper industries and are frequently encountered in the effluents subsequently released into the environment 2,3. These dyes present in the environmental waters can be carcinogenic, mutagenic, and result in chronic illnesses in humans and aquatic organisms 3,4. Apart from that, they reflect or absorb light entering the water thus hindering the photosynthetic activity of aquatic plants 1. Therefore, the removal of dyes from wastewater is necessary to abate their harmful effects on the ecosystem 5,6. Most dye removal studies have focused on the removal of dyes such as methylene blue, congo red, malachite green, rhodamine B, methyl orange, methyl violet, reactive black, basic blue, acid yellow, brilliant green, and crystal violet 7,8. However, research on the removal of celestine blue (CEB) is rare despite the wide use of CEB in the nuclear and textile industries. Therefore, the removal of CEB from wastewater is important. Several techniques have been harnessed for the remediation of dye-polluted water, such as filtration, coagulation, oxidation, precipitation, reduction, photocatalytic degradation, solvent extraction, and adsorption 9. The adsorption technique is the most efficient and adsorption on bio-waste (biosorption) is promising due to the simplicity, low cost, degradability, reusability, and efficiency 10. Hence, the use of several bio-waste for the biosorption of dyes has received much attention,...

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Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and regeneration of an inorganic–organic nanocomposite (ZnO@biomass) and its application in the capture of cationic dye

Akpomie

Conradie

2020

Sci Rep

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“…Two parameter sorption isotherm models were utilized for fitting data in other to determine the relationship between the amount in aqueous concentration at equilibrium and the amount sorbed. In the current investigation, the Freundlich, Langmuir, Dubinin-Radushkevich (D-R) and the Temkin models were utilized (Chukwuemeka-okorie et al 2018;Dawodu et al 2019) to examine the equilibrium between the concentration in solution and the Cr(VI) ions sorbed onto HCSC biomass.…”

Section: Biosorption Isotherm Modelingmentioning

confidence: 99%

“…Dubinin-Radushkevich isotherm model is expressed in its linear form as (Gunay et al 2007;Dawodu et al 2019).…”

Section: Biosorption Isotherm Modelingmentioning

confidence: 99%

Sequestered capture and desorption of hexavalent chromium from solution and textile wastewater onto low cost Heinsia crinita seed coat biomass

2019

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Due to the high cost associated with the treatment of effluents containing heavy metals in the environment, the continuous untreated release of effluent containing chromium from textile industries has resulted in several adverse effects to plants, ecological systems and humans. This research therefore focused on the use of a low cost, biodegradable Heinsia crinita seed coat (HCSC) material for the biosorption of chromium(VI) from aqueous and textile contaminated effluent. The biosorbent was characterized for specific surface area, surface morphology, pH point of zero charge and surface functional groups. Operational variables influences such as biosorbent dose, pH, temperature, initial Cr(VI) ion concentration and contact time on biosorption process was tested. The optimum biosorption parameter was obtained at pH 2.0, adsorbent dosage 0.25 g and contact time of 30 min. From sorption analysis, the pseudo-second-order model best described the attenuation kinetics. Concerning biosorption equilibrium, the results suggested that the adsorption isotherm obeyed the Freundlich model. Langmuir maximum monolayer biosorption capacity of 231.7 mg/g was higher than most biosorbents for Cr(VI) ion. The thermodynamic data showed a physical, spontaneous and endothermic biosorption process. HCSC showed high percentage desorption > 90% using 0.1 M HNO 3 and was efficient after three cycles of regeneration studies. The results showed HCSC biomass as a suitable candidate for abstraction of Cr(VI) ion from contaminated solution and textile effluent.

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“…The contamination of water bodies due to dyes negatively affects the ecological system and human health [1]. Industrial activities such as production of textile, paper, and rubber use reactive synthetic dyes [2,3]. Such dyes are harmful organic pollutants because of their carcinogenic effects [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Industrial activities such as production of textile, paper, and rubber use reactive synthetic dyes [2,3]. Such dyes are harmful organic pollutants because of their carcinogenic effects [3][4][5]. Dye contaminants are synthetic dyes that are non-biodegradable; therefore, it is recommended to remove such pollutants from wastewater before being discharged into natural water [6].…”

Section: Introductionmentioning

confidence: 99%

Mg-Cr Layered Double Hydroxide with Intercalated Oxalic Anion for Removal Cationic Dyes Rhodamine B and Methylene Blue

2020

J. Environ. Treat. Tech.

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A MgCr-based layered double hydroxide (LDH) was synthesized by a coprecipitation method, followed by an intercalation process using an oxalic anion. The materials were characterized using X-ray diffraction analysis, FT-IR spectroscopy, and pH pzc measurement. The materials were then applied as adsorbents for removal of methylene blue (MB) and rhodamine B (RhB) from aqueous solution. Pristine Mg/Cr LDH exhibited RhB adsorption capacity of 32.154 mg g⁻1, whereas the use of intercalated Mg/Cr LDH caused an increase in the capacity (139.526 mg g⁻1). Kinetic studies indicated that the dye adsorption using both LDHs followed a pseudo-second-order kinetic model; the K2 values of pristine and modified Mg/Cr LDH for RhB and MB were 6.970, 0.001, 0.426, and 2.056 g mg⁻1 min⁻1, respectively. The thermodynamic study identified that the adsorption of both dyes onto the LDHs was a spontaneous process and can be classified as physical adsorption with adsorption energies of <40 kJ/mol. Moreover, the desorption and regeneration experiments indicated the high economic feasibility and reusability of the LDHs. By using HCl as the optimal solvent, the LDHs could desorb as much as 98% of the dye and could be used as adsorbents with high adsorption capacity over three cycles.

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Synthesis of silver nanoparticle from Vigna unguiculata stem as adsorbent for malachite green in a batch system

Cited by 27 publications

References 16 publications

Synthesis, characterization, and regeneration of an inorganic–organic nanocomposite (ZnO@biomass) and its application in the capture of cationic dye

Synthesis, characterization, and regeneration of an inorganic–organic nanocomposite (ZnO@biomass) and its application in the capture of cationic dye

Sequestered capture and desorption of hexavalent chromium from solution and textile wastewater onto low cost Heinsia crinita seed coat biomass

Mg-Cr Layered Double Hydroxide with Intercalated Oxalic Anion for Removal Cationic Dyes Rhodamine B and Methylene Blue

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