Lignosulfonate/N-butylaniline hollow microspheres for the removal of Cr(VI): Fabrication, adsorption isotherm and kinetics

Zhang, Hao; Tian, Yuxin; Niu, Yanrui; Dong, Xiaolong; Li, Hongming; Zhou, Haifeng

doi:10.1016/j.jwpe.2022.102588

Cited by 19 publications

(7 citation statements)

References 57 publications

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“…After 360 min, about 86% of the total initial number of ions was adsorbed, which is a significant advantage in terms of its practical application in water treatment: with the reduction in contact time, the operational costs of the process would also reduce, although the use of eucalypt stump lignin compared with kraft lignin would provide a lower residual concentration. Other industrial lignins (e.g., pulping black liquor) revealed a long time (4320 min) to reach the adsorption equilibrium [ 15 , 16 ].…”

Section: Resultsmentioning

confidence: 99%

“…Recently, published papers have described the adsorption capacities of lignin isolated from Pinus elliotii and Eucalyptus grandis to be 16.55 mg/g for zinc ions [ 1 ]. However, higher values were mentioned when using modified lignins, e.g., by introducing amino groups, which increased from 409.3 to 559.7 mg/g [ 16 ].…”

Section: Resultsmentioning

confidence: 99%

“…The possibility of metal recovery from lignin by acidification is followed by precipitation [ 10 ], and heavy metal adsorption onto lignins of various origins has been documented in the literature [ 1 , 11 , 12 , 13 , 14 , 15 ]. More recently, lignin modifications have been made to improve its adsorption capacity [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

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Valorisation of Lignocellulosic Wastes, the Case Study of Eucalypt Stumps Lignin as Bioadsorbent for the Removal of Cr(VI)

Lourenço

Kukić²,

Vasić³

et al. 2022

Molecules

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The main objective of this work was to assess Eucalyptus globulus lignin as an adsorbent and compare the results with kraft lignin, which has previously been demonstrated to be an effective adsorbent. Eucalypt lignin was extracted (by the dioxane technique), characterised, and its adsorption properties for Cr(VI) ions were evaluated. The monomeric composition of both types of lignin indicated a high content of guaiacyl (G) and syringyl (S) units but low content of p-hydroxyphenyl (H), with an H:G:S ratio of 1:50:146 (eucalypt lignin) and 1:16:26 (kraft lignin), as determined by Py-GC/MS. According to elemental analysis, sulphur (2%) and sodium (1%) were found in kraft lignin, but not in eucalypt lignin. The adsorption capacity of the eucalypt lignin was notably higher than the kraft lignin during the first 8 h, but practically all the ions had been absorbed by both the eucalypt and kraft lignin after 24 h (93.4% and 95%, respectively). Cr(VI) adsorption onto both lignins fitted well using the Langmuir adsorption isotherm model, with capacities of 256.4 and 303.0 mg/g, respectively, for eucalypt and kraft. The study’s overall results demonstrate the great potential of eucalypt lignin as a biosorbent for Cr(VI) removal from aqueous solutions.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Valorisation of Lignocellulosic Wastes, the Case Study of Eucalypt Stumps Lignin as Bioadsorbent for the Removal of Cr(VI)

Lourenço

Kukić²,

Vasić³

et al. 2022

Molecules

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“…At present, several methods including adsorption (Zhang et al, 2022), membrane separation (Zhang et al, 2019), photocatalytic degradation (Wu et al, 2022), biodegradation (Xiong et al, 2017) and redox (Kueasook et al, 2020) have been fully developed to treat wastewater rich in organic pollutants. Among them, adsorption method is regarded as an attractive approach to remove organic pollutants from wastewater because of its advantages of low energy consumption, simple operation, environmental friendliness and no secondary pollution (Tian and Zhou, 2022).…”

Section: Introductionmentioning

confidence: 99%

One-pot preparation of magnetic nitrogen-doped porous carbon from lignin for efficient and selective adsorption of organic pollutants

Tian

Yin

Jia

et al. 2022

Environ Sci Pollut Res

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E cient and rapid capture of organic pollutants from wastewater is an urgent problem to be solved by adsorbents. Nitrogen-doped magnetic porous carbon (M-PLAC) with three-dimensional porous structure was synthesized from lignin to adsorb MB and TC in wastewater. M-PLAC had high speci c surface area (1252.21 m 2 /g) and N element content (7.44%). The calculated equilibrium adsorption amount by M-PLAC for MB and TC was 645.52 and 1251.09 mg/g, respectively. The adsorption of MB and TC on M-PLAC conformed to the pseudo-second-order kinetic model, demonstrating that the adsorption process was attributed to chemisorption. The excellent adsorption performance was a synergistic effect among various adsorption mechanisms. The removal of MB and TC by M-PLAC showed fast and e cient characteristics, and exhibited high selectivity for TC in binary system. In addition, M-PLAC was suitable for a variety of complex water environments and had good regeneration performance, demonstrating potential advantages in practical wastewater treatment.

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“…A wide number of techniques (e.g., precipitation, adsorption, biosorption, photocatalyst, flotation, microbial fuel cell, electrochemical treatment, membrane technology, ion exchange, and reverse osmosis) that have been used for the removal of metals can also be applied to chromium [Jawed et al, 2020]. Furthermore, the most commonly used method is sorption, which involves the use of a variety of natural and synthetic materials and the synergistic reduction of Cr(VI) to less soluble Cr(III) [Farooqi et al, 2021;Kaprara et al, 2013Kaprara et al, & 2017Zhang et al, 2022]. The combination and development of the techniques mentioned above could provide solutions to the problem of Cr mitigation in polluted sites.…”

Section: Introductionmentioning

confidence: 99%

Critical Parameters and Mechanisms of Chromium Removal from Water by Copper-Based Nanoparticles

Noli

Dafnomili

Dendrinou‐Samara

et al. 2022

Water Air Soil Pollut

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This research aims to explore the chromium removal from water using copper-based nanoparticles. The nanoparticles were synthesized by hydrothermal method and characterized by X-ray diffraction, scanning electron microscopy, infrared spectroscopy, and X-ray photoelectron spectroscopy as well as determination of the specific surface area (SBET) and point of zero charge (PZC). The size and composition of nanoparticles are influenced by the reaction time, organic coating, and oxidizing atmosphere. Sorption experiments were carried out in aqueous solutions as well as simulated drinking water at various initial concentration, time, and temperature. Cu nanoparticles had a significant Cr uptake capacity of 3.4 mg·g−1 for Cin 1.0 mg·L−1 lowering the Cr concentration below the provisional guideline value of 50 μg·L−1. Sorption isotherms were fitted to Henry, Langmuir, and Freundlich models, whereas kinetic data were reproduced by different kinetic models. Iodide sorption experiments were carried out to explore the sorption mechanism onto Cu-NPs. Considering the biocompatibility, stability, good uptake capacity, and reusability, Cu nanoparticles could be considered as promising agents for applications in water purification.

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Lignosulfonate/N-butylaniline hollow microspheres for the removal of Cr(VI): Fabrication, adsorption isotherm and kinetics

Cited by 19 publications

References 57 publications

Valorisation of Lignocellulosic Wastes, the Case Study of Eucalypt Stumps Lignin as Bioadsorbent for the Removal of Cr(VI)

Valorisation of Lignocellulosic Wastes, the Case Study of Eucalypt Stumps Lignin as Bioadsorbent for the Removal of Cr(VI)

One-pot preparation of magnetic nitrogen-doped porous carbon from lignin for efficient and selective adsorption of organic pollutants

Critical Parameters and Mechanisms of Chromium Removal from Water by Copper-Based Nanoparticles

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