Preparation and characterization of Na2S-modified biochar for nickel removal

Hu, Xiaolan; Xue, Yingwen; Liu, Lina; Zeng, Yifan; Li, Long

doi:10.1007/s11356-018-1298-6

Cited by 42 publications

(21 citation statements)

References 44 publications

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“…Some researchers have shown through their papers that the optimal initial solution pH for nickel adsorption is 6, regardless of the adsorbent used [10,30,31]. Consequently, the batch equilibrium experiments were carried out at constant pH value of 6.0±0.1, using 40 mg of MgAl-LDH and 40 mL of Ni(II) solution having different initial concentrations (200, 300, 500 mg/L).…”

Section: Adsorption Studiesmentioning

confidence: 99%

Modeling of Solid-Fluid non-catalytic Processes for Nickel Ion Removal

Buema¹,

Lupu²,

Chiriac³

et al. 2020

Rev. Chim.

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The aim of this study is modeling of the process of Ni(II) removal onto new materials synthesized by a facile coprecipitation method. The literature presents different surfactants intercalated on MgAl-LDH with applicability for nickel ions removal, but the researches on the use of this material ��as cast�� as adsorbent for Ni(II) ions are limited, it is reason to develop this study. The morphology, chemical composition, and the basic structure of the new material were analyzed by SEM, EDAX, BET, XRD and FT-IR. The kinetic modeling was performed using the pseudo-first-order, four-type linear pseudo-second-order, and intraparticle diffusion. The experimental data demonstrated that the adsorption process is very fast in the first 20 minutes and reach equilibrium after 50 min. The maximum adsorption capacities of the adsorbent are in the range of 36.5-68.18 mg/g, for the 200-500 mg/L initial solution concentration.

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Section: Adsorption Studiesmentioning

confidence: 99%

Modeling of Solid-Fluid non-catalytic Processes for Nickel Ion Removal

Buema¹,

Lupu²,

Chiriac³

et al. 2020

Rev. Chim.

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show abstract

“…So far, numerous attempts were made to eliminate Ni contamination, including chemical precipitation [4], phytoremediation [5], redox [6] and adsorption [7, 8]. Among them, adsorption is an effective technology for Ni removal and potentially for Ni recycle based on desorption [9].…”

Section: Introductionmentioning

confidence: 99%

Highly efficient nickel (II) removal by sewage sludge biochar supported α-Fe2O3 and α-FeOOH: Sorption characteristics and mechanisms

Yang

Xue

et al. 2019

PLoS ONE

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A novel approach was employed to load α-Fe 2 O 3 and α-FeOOH onto sewage sludge biochar (SBC) with the purpose of efficient nickel (Ni) removal. A high Ni(II) adsorption capacity of 35.50 mg·g -1 in 100 ppm Ni(II) solution with 10 mg modified sewage sludge biochar (MSBC) was achieved. The adsorption kinetic and isotherm were fitted well by the pseudo-second-order model and the Langmuir model, respectively. The optimal pH was found around a neutral pH of 7. The adsorption mechanisms of Ni(II) onto MSBC were described as the synergistic effects of electrostatic attraction, ion exchange, inner-sphere complexation and co-precipitation. The initial rapid adsorption phenomenon could be attributed to electrostatic attraction and ion exchange, and then inner-sphere complexation and co-precipitation acted as a crucial role in the following step. The remarkable performance of MSBC provides an effective waste utilization approach to simultaneous sewage sludge recycle and Ni removal from aqueous solution.

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“…The ability of the PPI networks to remove Ni 2+ ions from aqueous media which is investigated in the current study was compared with recent studies and the results are presented in Table . The impressive performance of PPI networks in Ni 2+ adsorption with a time of 30 min and an adsorption capacity of 36.1 mg g −1 proves the ability of POPs for removing contaminants from wastewater.…”

Section: Resultsmentioning

confidence: 99%

Novel porous organic triazine‐based polyimide with high nitrogen levels for highly efficient removal of Ni(II) from aqueous solution

Mokhtari

Dinari

Rahmanian

2019

Polymer International

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In this study, a porous organic triazine-based polyimide (PPI network) was prepared from 2,4,6-tris(hydrazino)-s-triazine and 3,4,9,10-perylenetetracarboxylic dianhydride. TGA, Fourier transform infrared spectroscopy, field emission SEM, XRD and a nitrogen sorption study confirmed the PPI network structure. Then, the synthesized PPI network was used to evaluate Ni 2+ ion removal from aqueous solution and the effective parameters on adsorption functions of Ni 2+ ions such as initial concentration, contact time and pH of the solution in batch adsorption experiments was studied. The results showed that the maximum adsorption capacity (q m ) of Ni 2+ ions was 36.1 mg g −1 in only 30 min with a pH of 7. The kinetics and adsorption isotherm were identified to be better fitted by the pseudo-second-order model and the Langmuir model, respectively. Based on the results, the proposed adsorbent has good potential for removing Ni 2+ ions from aqueous solutions.

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Preparation and characterization of Na2S-modified biochar for nickel removal

Cited by 42 publications

References 44 publications

Modeling of Solid-Fluid non-catalytic Processes for Nickel Ion Removal

Modeling of Solid-Fluid non-catalytic Processes for Nickel Ion Removal

Highly efficient nickel (II) removal by sewage sludge biochar supported α-Fe2O3 and α-FeOOH: Sorption characteristics and mechanisms

Novel porous organic triazine‐based polyimide with high nitrogen levels for highly efficient removal of Ni(II) from aqueous solution

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