Full-Lignin-Based adsorbent for removal of Cr(VI) from waste water

Li, Wei; Chai, Lanfang; Du, Benni; Chen, Xiaohong; Sun, Run-Cang

doi:10.1016/j.seppur.2022.122644

Cited by 21 publications

(7 citation statements)

References 62 publications

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“…For example, methoxy groups on lignin can be demethylated by AlCl 3 , generating free hydroxyl groups on the lignin. This demethylated alkaline lignin (DAL) can capture chromium(VI) ions up to 99.9% 73 . A detailed proposed mechanism is shown in Figure 10, wherein the phenol moieties after demethylation were assumed to be oxidized to form carboxylate that can bind well to chromium ions.…”

Section: Metal Ion Adsorbentsmentioning

confidence: 99%

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Lignin‐based materials for the detection and adsorption of metal ions

Lee

Koo

2023

Bulletin Korean Chem Soc

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Upcycling low‐valued materials and/or biobased wastes is a promising method to produce materials in an energy‐saving, sustainable way. Lignin is one of the underutilized biomasses and has been produced as a byproduct in paper‐making industry. Upcycling lignin into valuable products is key to solving problems associated with waste disposal, environmental pollution, and depletion of natural resources. One way to add values to lignin and its derivatives is to utilize them as sensors and adsorbents, in which toxic elements and materials can be detected and removed. In this review, we highlight the utility of lignin in the field of sensing and adsorbing metal ions. This review begins with the general overview of lignin as materials, followed by investigation of lignin and its derivatives in the detection and removal of metal ions. Lastly, we end this review with the prospects of lignin as sensors and adsorbents.

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Section: Metal Ion Adsorbentsmentioning

confidence: 99%

Section: Metal Ion Adsorbentsmentioning

confidence: 99%

Lignin‐based materials for the detection and adsorption of metal ions

Lee

Koo

2023

Bulletin Korean Chem Soc

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“…[17][18][19] A high content of aliphatic OH groups in lignin makes it extremely attractive as a feedstock for adsorbents in aqueous systems. [20,21] A lignin with high polydispersity is suitable to produce lubricants or compact lignin nanoparticles, [22][23][24] while lignins with low polydispersity are excellent for mechanical carbon fibers or hollow lignin nanoparticles. [17,25] To date, several studies have focused on optimizing delignification, maximizing purity, or idealizing the economic and environmental aspects (circular economy concept) of the organosolv process.…”

Section: Introductionmentioning

confidence: 99%

“…[ 17–19 ] A high content of aliphatic OH groups in lignin makes it extremely attractive as a feedstock for adsorbents in aqueous systems. [ 20,21 ] A lignin with high polydispersity is suitable to produce lubricants or compact lignin nanoparticles, [ 22–24 ] while lignins with low polydispersity are excellent for mechanical carbon fibers or hollow lignin nanoparticles. [ 17,25 ]…”

Section: Introductionmentioning

confidence: 99%

Beyond Yield Optimization: The Impact of Organosolv Process Parameters on Lignin Structure

Bergrath

Rumpf

Burger

et al. 2023

Macro Materials & Eng

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When optimizing the process parameters of the acidic ethanolic organosolv process, the aim is usually to maximize the delignification and/or lignin purity. However, process parameters such as temperature, time, ethanol and catalyst concentration, respectively, can also be used to vary the structural properties of the obtained organosolv lignin, including the molecular weight and the ratio of aliphatic versus phenolic hydroxyl groups, among others. This review particularly focuses on these influencing factors and establishes a trend analysis between the variation of the process parameters and the effect on lignin structure. Especially when larger data sets are available, as for process temperature and time, correlations between the distribution of depolymerization and condensation reactions are found, which allow direct conclusions on the proportion of lignin's structural features, independent of the diversity of the biomass used. The newfound insights gained from this review can be used to tailor organosolv lignins isolated for a specific application.

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“…Nowadays, environmental significant pollution by heavy and toxic metals, such as Hg, As, Cr, and Cd, has become a prominent social problem [1] . Cr is a common type of pollutant, which always existed in the ground-water owing to its widely used among various industries [2] .…”

Section: Introductionmentioning

confidence: 99%

Convenient synthesis of Co-base metal-organic frameworks to effectively adsorb and remove Cr(VI) from aqueous

Xie,

Li,

Dong

2023

J. Phys.: Conf. Ser.

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Herein, we reported the synthesis of a series of well-defined regular cobalt-based metal-organic frameworks (MOFs) from 3D to 2D phases through a facile synthesis method and confirm their effective adsorption behavior for Cr(VI) in aqueous. The equilibrium adsorptive capacities of ZIF-67, ZIF-L-Co-H, ZIF-L-Co-L, and ZIF-L-Co were 27.7, 28, 28.2, and 32 mg/g, respectively. ZIF-L-Co nanosheet morphology exhibited excellent adsorption performance for Cr(VI) in water for the first time, and sharp adsorption speed was also presented at the relevant initial concentrations. The Cr(VI) adsorption process demonstrated that the result well fitted the Langmuir isotherm model of 32.5 mg g-1 with uniform monolayer adsorption. The findings provided a broader understanding of Co-MOFs application as the Cr(VI) removal of wastewater.

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Full-Lignin-Based adsorbent for removal of Cr(VI) from waste water

Cited by 21 publications

References 62 publications

Lignin‐based materials for the detection and adsorption of metal ions

Lignin‐based materials for the detection and adsorption of metal ions

Beyond Yield Optimization: The Impact of Organosolv Process Parameters on Lignin Structure

Convenient synthesis of Co-base metal-organic frameworks to effectively adsorb and remove Cr(VI) from aqueous

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