Removal of Heavy Metal Nickel-Ions from Wastewaters Using Carbon Nanodots from Frying Oil

Aji, Mahardika Prasetya; Wiguna, Pradita Ajeng; Karunawan, Jotti; Wati, Annisa Lidia; Sulhadi,

doi:10.1016/j.proeng.2017.03.007

Cited by 41 publications

(7 citation statements)

References 16 publications

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“…Likewise, a peak at 28°, which was designated to originate from a halite, was visible in DF and disappeared in all other sorbents. Another peak (17) K P = MB adsrobed at equilibrium MB concentration at equilibrium www.nature.com/scientificreports/ representing halite appeared at 43° with lower intensity in DF and DBC and with higher intensity in nCD-DBC. A peak at 29.3° in DF was attributed to calcite, which was reduced in DBC and nZVI-DBC, whereas it completely vanished in nCD-DBC.…”

Section: Sem Xrd Ftirmentioning

confidence: 99%

“…Likewise, biochars can also be combined with nanodots to develop nano-biochar based adsorbents with improved characteristics and performance. Carbon nanodots are insoluble in water, non-toxic, cheaper, eco-friendly, and possess a strong fluorescence nature; they have thus found different applications, including photocatalyst, energy, bioimaging, and sensors 17 . Carbon nanodots are nanostructured and are mainly composed of oxygen, hydrogen and carbon.…”

Section: Introductionmentioning

confidence: 99%

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Turning date palm waste into carbon nanodots and nano zerovalent iron composites for excellent removal of methylthioninium chloride from water

Ahmad

Akanji

Usman

et al. 2020

Sci Rep

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Novel carbon nanodots (nCD-DBC) and nano zero-valent iron composites (nZVI-DBC) were synthesized using date palm waste-derived biochar (DBC). The synthesized materials were analyzed for chemical and structural composition by using FTIR, SEM, XRD, and TGA, and evaluated for their methylthioninium chloride dye (MB) removal efficiency from contaminated aqueous solutions. pH 7.0 was found optimum for the highest MB removal in sorption batch studies. Kinetics sorption of MB onto the sorbents was best described by pseudo-second-order (R2 = 0.93–0.99) and Elovich models (R2 = 0.86–0.97) implying that sorption was being controlled by chemisorption. Langmuir model predicted maximum sorption capacities for nCD-DBC, nZVI-DBC, and DBC were 1558.66, 1182.90, and 851.67 mg g−1, respectively, which correlated with the results of kinetics sorption. Likewise, nCD-DBC yielded the highest partition coefficient (7067 mL g−1), followed by nZVI-DBC (1460 mL g−1), and DBC (930 mL g−1). Post-sorption XRD, FTIR, and SEM analyses depicted the binding of MB onto the sorbents. It was suggested that electrostatic interactions, π–π electron donor-accepter interactions, degradation, and diffusion were responsible for MB removal by the synthesized materials. Therefore, the nCD-DBC, nZVI-DBC, and DBC can potentially be used for scavenging MB dye from contaminated aqueous solutions.

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Section: Sem Xrd Ftirmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Turning date palm waste into carbon nanodots and nano zerovalent iron composites for excellent removal of methylthioninium chloride from water

Ahmad

Akanji

Usman

et al. 2020

Sci Rep

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“…Heavy metal pollution is a major environmental concern at the global scenario and has limited the availability of fresh water for the increasing population [1,2]. The changing water quality has become a serious problem for the entire nations of the world [3].…”

Section: Introductionmentioning

confidence: 99%

Removal of cadmium (Cd-II) from aqueous solution using gas industry-based adsorbent

Kumar

2019

SN Appl. Sci.

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The present study is to determine the potential of gas industry sludge as a low-cost adsorbent for the removal of cadmium from aqueous solution. The batch experiments were conducted to optimize pH, contact time, adsorbent dose and initial metal ion concentration. The experiments were optimized at pH 5, contact time 60 min and an adsorbent dose of 0.75 g/100 ml with constant agitation at the room temperature. The result of batch experiment was further discussed for the removal of cadmium from adsorbent. The adsorption data were correlated with Freundlich and Langmuir isotherms to know the interaction of sludge adsorbent with cadmium. High value of regression coefficient (R 2 > 0.95) indicated that the adsorption data are fitted well with both Langmuir and Freundlich isotherms. The adsorption capacity of 25 mg/g was found to be quite good for removal of the cadmium from aqueous solution. Desorption efficiency showed highest removal with HCl (42.83%); followed by HNO 3 (38.26%), EDTA (37.73%) and H 2 SO 4 (36.83%). The removal and desorption efficiency of the gas industry-based adsorbent was found to be comparable and even more suitable than the chemically modified adsorbents. The present study provides a low-cost and environmentally friendly adsorbent, which can be used as an alternative for the treatment of wastewater.

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“…Nowadays, the discharge of effluents containing heavy metals is the major concern for the environment . Heavy metals are nondegradable and toxic to the living organisms, and they can be recovered before being discharged into the environment . Among all the heavy metals, nickel has been the most widely used metal in many specific industrial and consumer product applications, including steel production, electroplating industry, battery manufacturing, dying operation, leather tanning, and paint formulation industries .…”

Section: Introductionmentioning

confidence: 99%

Biosorption of nickel from aqueous solution onto Liagora viscida: Kinetics, isotherm, and thermodynamics

Komarabathina

King

Pujari

et al. 2019

Env Prog and Sustain Energy

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The present article addresses the effect of various parameters on batch biosorption of nickel using an inexpensive Liagora viscida algae as a biosorbent. The experimental studies revealed that for an initial metal solution concentration of 20–200 ppm, the equilibrium is achieved after 50 min and the maximum sorption at a pH of 5. Isotherms such as Temkin, Freundlich, and Langmuir were examined. The data are well suitable by using the Langmuir isotherm with a sorption uptake of 22.77 mg/g, confirming that L. viscida can be considered as a low‐cost biosorbent. The dynamic experimental data were represented well by pseudo‐first‐order kinetics. The thermodynamic study revealed that the biosorption of nickel on to L. viscida was endothermic and spontaneous.

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Removal of Heavy Metal Nickel-Ions from Wastewaters Using Carbon Nanodots from Frying Oil

Cited by 41 publications

References 16 publications

Turning date palm waste into carbon nanodots and nano zerovalent iron composites for excellent removal of methylthioninium chloride from water

Turning date palm waste into carbon nanodots and nano zerovalent iron composites for excellent removal of methylthioninium chloride from water

Removal of cadmium (Cd-II) from aqueous solution using gas industry-based adsorbent

Biosorption of nickel from aqueous solution onto Liagora viscida: Kinetics, isotherm, and thermodynamics

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