Biosorptive interaction of alkaline modified <i>Dialium guineense</i> seed powders with ciprofloxacin in contaminated solution: central composite, kinetics, isotherm, thermodynamics, and desorption

Ezekoye, Oluchi M; Akpomie, Kovo G.; Eze, Samson I.; Chukwujindu, Christian N; Ani, Julius U.; Ujam, Oguejiofo T.

doi:10.1080/15226514.2020.1725869

Cited by 49 publications

(37 citation statements)

References 51 publications

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“…Table 1 shows that the maximum monolayer uptake of CEB on ACP (5.42 mg g −1 ) was slightly improved with ZnO@ACP (6.52 mg g −1 ). The Langmuir R L value of 0.171-0.508 for ACP and 0.110-0.383 for ZnO@ACP as well as the Freundlich n values indicated an efficient affinity for CEB 44 . The maximum adsorption capacity of ACP and ZnO@ACP for CEB was compared with other low costs, pineapple, and ZnONPs based adsorbents used for cationic dye adsorption as shown in Table 2.…”

Section: Resultsmentioning

confidence: 93%

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: Resultsmentioning

confidence: 93%

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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“…3b. From the thermogram, a slight weight loss of both adsorbents was recorded from 40 to 250 °C, attributed to the removal of moisture and volatile components from the adsorbents 29 . This was followed by significant weight loss from 250 to 450 °C, mainly due to decomposition of organic matter 68 .…”

Section: Resultsmentioning

confidence: 99%

“…We observed that pure STpe retained up to 96 and 93% initial weight at pH 7.0 and 5.0 respectively, with 89% at more acidic (pH 3.0) and 91% at more alkaline (pH 9.0) conditions. The removal of more STpe components could be associated with acid and alkaline activation of the biosorbent 29 , with higher stability at neutral pH. For STpe-AgNP, which is our adsorbent of interest, weight retained of 85, 92, 92 and 90% was obtained at pH 3.0, 5.0, 7.0 and 9.0 respectively.…”

Section: Stability Of Impregnated Agnp On the Hybrid Adsorbent The Smentioning

confidence: 96%

“…ΔH° and ΔG° were evaluated for the abstraction of BB onto STpe and STpe-AgNP, as presented in Table 4. 29 . This corroborates the favourable adsorption deduced from the Langmuir isotherm separation factor R L .…”

Section: Thermodynamic Evaluation Of Bb Adsorption Adsorption Thermomentioning

confidence: 99%

“…The utilization of low-cost materials as suitable alternatives, such as biowastes 25 , chitosan based materials 26 , and natural inorganic materials 27 , 28 has gained attention recently. However, biomass waste materials are the preferred choice, owing to their abundance, low cost, biodegradability and efficiency 29 , 30 .…”

Section: Introductionmentioning

confidence: 99%

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Biogenic and chemically synthesized Solanum tuberosum peel–silver nanoparticle hybrid for the ultrasonic aided adsorption of bromophenol blue dye

Akpomie

Conradie

2020

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This work was aimed at the synthesis of a hybrid (STpe-AgNP), obtained by impregnation of silver nanoparticles (AgNP) onto Solanum tuberosum peel (STpe), for the ultrasonic assisted adsorption of bromophenol blue (BB) dye. SEM, FTIR, XRD, EDX, TGA and BET techniques were used to characterize the adsorbents. The XRD, SEM and EDX confirmed successful impregnation of AgNPs onto STpe to form the hybrid. The AgNPs impregnated onto the hybrid were found to be water stable at various pH values of 2.0–9.0. Chi-square (χ2 < 0.024) and linear regression (R2 > 0.996) showed that the Freundlich model was best fitted among the isotherm models, corroborated by the oriented site model. Kinetic analysis conformed to the intraparticle diffusion and pseudo-first-order rate equations, while thermodynamics displayed a physical, spontaneous and endothermic adsorption process. The presence of competing Pb(II), Ni(II), Cd(II) and Zn(II) metal ions in solution interfered with the adsorption of BB onto the biosorbents. In terms of reusability, STpe and STpe-AgNP showed BB desorption of 91.3% and 88.5% respectively, using NaOH as eluent. Ultra-sonication significantly enhanced the adsorption of BB by both adsorbents, but the impregnation of AgNPs only slightly improved adsorption of the dye from the simulated wastewater. This study also illustrated that pristine STpe biomass waste is a cheap viable option for the decontamination of BB from water.

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Banana peel as a biosorbent for the decontamination of water pollutants. A review

2020

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Biosorptive interaction of alkaline modified Dialium guineense seed powders with ciprofloxacin in contaminated solution: central composite, kinetics, isotherm, thermodynamics, and desorption

Cited by 49 publications

References 51 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

Biogenic and chemically synthesized Solanum tuberosum peel–silver nanoparticle hybrid for the ultrasonic aided adsorption of bromophenol blue dye

Banana peel as a biosorbent for the decontamination of water pollutants. A review

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