Effective removal of Acid Blue 113 dye using overripe Cucumis sativus peel as an eco-friendly biosorbent from agricultural residue

Lee, Lai Yee; Gan, Suyin; Tan, Michelle T.T.; Lim, Siew Shee; Lee, Xin Jiat; Lam, Yun Fung

doi:10.1016/j.jclepro.2015.11.016

Cited by 108 publications

(33 citation statements)

References 38 publications

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“…With an increase in pH (pH > 2.5), the biomass surface becomes negative in charge, thereby decreasing the dye adsorption due to electrostatic repulsion. Our results are also in good agreement with other research findings [28,31]. On the other hand, it is noted that lower pH (pH < 2.5) renders a decrease in adsorption of AY-99 on MLP.…”

Section: Effect Of Ph Temperature and Thermodynamic Propertiessupporting

confidence: 93%

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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Section: Effect Of Ph Temperature and Thermodynamic Propertiessupporting

confidence: 93%

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

et al. 2019

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“…Likewise, when the concentration of MB increased from 100 mg L −1 to 200 mg L −1 , the amount of MB adsorbed on KOH-CSBC and H 3 PO 4 -CSBC increased from 199.8 to 372.3 mg g −1 , and from 91 to 105 mg g −1 , respectively. A higher initial concentration of MB can provide a higher driving force to overcome the mass transfer resistance of dye molecules between the solid phase and the liquid phase, resulting in more contact between dye molecules and the active sites on an adsorbent [43,44]. This phenomenon likely explains the data shown in Figure 6.…”

Section: Adsorption Kinetics Of Mb On Biocharsmentioning

confidence: 87%

Preparation of KOH and H3PO4 Modified Biochar and Its Application in Methylene Blue Removal from Aqueous Solution

Liu

Fan

2019

Processes

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Improperly treated or directly discharged into the environment, wastewater containing dyes can destroy the quality of water bodies and pollute the ecological environment. The removal of dye wastewater is urgent and essential. In this study, corn stalk was pyrolyzed to pristine biochar (CSBC) in a limited oxygen atmosphere and modified using KOH and H 3 PO 4 (KOH-CSBC, H 3 PO 4 -CSBC, respectively). The biochars were characterized by surface area and pore size, X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), as well as their behavior in adsorbing methylene blue (MB). Results indicated that the pore structure of CSBC became more developed after modification by KOH. Meanwhile, H 3 PO 4 -CSBC contained more functional groups after activation treatment. The pseudo-second-order kinetic and the Langmuir adsorption isotherm represented the adsorption process well. The maximum MB adsorption capacity of CSBC, KOH-CSBC, and H 3 PO 4 -CSBC was 43.14 mg g −1 , 406.43 mg g −1 and 230.39 mg g −1 , respectively. Chemical modification significantly enhanced the adsorption of MB onto biochar, especially for KOH-CSBC. The adsorption mechanism between MB and biochar involved physical interaction, electrostatic interaction, hydrogen bonding and π-π interaction. Hence, modified CSBC (especially KOH-CSBC) has the potential for use as an adsorbent to remove dye from textile wastewater.

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“…The broad band at 3440 cm -1 corresponded to O-H stretching of hydroxyl group. A pair of bands at 2920 and 2840 cm -1 could be attributed to C-H stretching of alkane group(Ahmad et al, 2017;Lee et al, 2016). The band interval from 2345-2450 cm -1 is stretching vibrations of carbon to carbon triple bond of alkyne, the band interval of 1500-1700 cm -1 is an indication of C=C (aromatic skeletal mode of lignin, C=O aldehyde or ketone), and can also indicate the bending vibration of adsorbed water, 1250-1000 cm -1 is assigned to C-O vibration of carboxylic acids, C-O-C and O-H vibration of polysaccharides, 1000-500 cm -1 band interval is C-H and C-C bend vibration and halogenated compounds' (C-X) stretching vibration(Ahmad et al, 2017;Argun et al, 2014).…”

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confidence: 99%

Adsorptive removal of malachite green dye from aqueous solution onto activated carbon of Catha edulis stem as a low cost bio-adsorbent

Abate

Alene

Habte

et al. 2020

Preprint

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Background: The release of hazardous synthetic dyes into industrial effluents has emerged as an environmental problem requiring remediation. The present study focused on the preparation of a new and environmentally-friendly material (adsorbent) for the remediation of aqueous media containing dye. The low cost adsorbent was prepared from locally available khat (Catha edulis) stem which considered as waste and accumulated on waste disposal areas of woldia town, Ethiopia. Comprehensive characterization studies were carried out on the bio-adsorbent such as proximate analyses, specific surface area, and Fourier-Transform Infrared (FTIR) spectroscopy (which shows functional groups on adsorbents surface). Results: The proximate analysis shows the prepared adsorbent has very high fixed carbon content (83.65%), which refers to high quality of the adsorbent. The adsorption performance of the prepared activated carbon was optimize by varying operating parameters such as initial dye concentration (10 mg/L), pH (10), dosage (0.5 g), and contact time (60 min). The maximum removal efficiency of the prepared adsorbent at those optimum conditions was 98.8%. The experimental data was tested by most common kinetics and isotherm models. It was observed that the pseudo-second-order kinetic model fits better with good correlation coefficient and the equilibrium data fitted well with the Freundlich isotherm model. Conclusion: In summery this study demonstrated that the waste bio sorbent could be employed as an effective and eco-friendly alternative for the cleanup of dye-polluted aqueous system.

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Effective removal of Acid Blue 113 dye using overripe Cucumis sativus peel as an eco-friendly biosorbent from agricultural residue

Cited by 108 publications

References 38 publications

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

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

Preparation of KOH and H3PO4 Modified Biochar and Its Application in Methylene Blue Removal from Aqueous Solution

Adsorptive removal of malachite green dye from aqueous solution onto activated carbon of Catha edulis stem as a low cost bio-adsorbent

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