Nanofiltration Membranes via Layer-by-layer Assembly and Cross-linking of Polyethyleneimine/Sodium Lignosulfonate for Heavy Metal Removal

Xie, Meng-Yun; Wang, Jiang; Wu, Qingyun

doi:10.1007/s10118-020-2422-x

Cited by 22 publications

(3 citation statements)

References 43 publications

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“…Polyethyleneimine (PEI)/lignosulfonate thin film was prepared on polysulfone ultrafiltration membrane by the layer-by-layer assembly and crosslinking technology where PEI was polycation. The prepared membrane had amino and hydroxyl groups on the surface and showed improved adsorption efficiency towards heavy metal ions [202].…”

Section: Lignosulphonate-based Synthetic Polymer Compositementioning

confidence: 99%

Recent progress in sulfur-containing technical lignin-based polymer composites

Mukherjee¹,

Mukhopadhyay²

2023

Express Polym. Lett.

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The aromatic biopolymer lignin, present in lignocellulosic material, can act as an antioxidant and has antimicrobial and UV blocking properties due to the presence of aromatic ring and phenolic hydroxyl groups with aliphatic hydroxyl, carboxyl, methoxy groups. It is produced in huge amounts as a by-product during the delignification process in the paper and pulp industries. Lignin-based polymer composites with advantageous properties can fulfill the growing demand for lightweight polymer composites. Incorporating lignin as reinforcement in polymer composite can make it more environmentally friendly. Among four technical lignin, kraft lignin and lignosulfonate have a unique molecular structure that includes sulfur and can be extracted from black liquor and spent liquor, respectively. Moreover, the negatively charged sulfite groups in lignosulfonate can have an electrostatic attraction to a wide range of positively charged polymers and materials, making it an ideal additive for the adsorbent material. The main intention of this review is to increase the knowledge on the use of cheap and widely available kraft lignin and lignosulfonate as reinforcement in polymer composites and to find the shortcomings to advance further research on the application of technical lignin. The article mainly focuses on advancements in kraft lignin and lignosulfonate polymer composites.

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Section: Lignosulphonate-based Synthetic Polymer Compositementioning

confidence: 99%

Recent progress in sulfur-containing technical lignin-based polymer composites

Mukherjee¹,

Mukhopadhyay²

2023

Express Polym. Lett.

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“…Specifically, the MWs of both PVAm and PSS were varied at three levels for the LbL assembly. SEM images (see Figure S2) revealed aggregates resulted from the coiled polymer chains on the surface of the coated membranes, 23,49 though the degree of aggregation was not significantly changed by varying the MW of either PE. The coated membranes were subsequently tested for FO performance.…”

Section: Performance Of Nf-like Membranes Containing Pvam As the Only...mentioning

confidence: 99%

Unraveling Distinct FO Performance of NF-Like Membranes Fabricated by Deposition of Bilayers Containing Polyamines with Minor Structural Differences

Chen

Chew

2023

ACS EST Water

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Nanofiltration (NF)-like membranes have shown potential for implementing forward osmosis (FO) for resource recovery. Despite the popular use of poly(allylamine hydrochloride) (PAH) as a polycation in the layer-by-layer (LbL) coating of NF-like membranes, it remained ambiguous whether substantial changes could result from the minor structural difference in polyamine when employing polyvinylamine (PVAm) as the polycation. This study systematically assessed the filtration capability of the NF-like membranes with varying combinations of the PAH- and PVAm-containing bilayers in an FO process. The FO experiments revealed that the dominance of PVAm-containing bilayers in the upper part of the active layer could result in decreases in both the water permeability and the rejection of divalent salts. Subsequent fouling tests demonstrated that the membrane coated solely with PVAm-containing bilayers (i.e., the VVV membrane) exhibited the fastest flux decline in the fouling tests with sodium alginate (SA), whereas the fouling layer could be more easily removed by the crossflow. Optical coherence tomography (OCT) characterization indicated that the bridging effect of divalent cations could promote the aggregation of SA to form a particulate layer more susceptible to the shear effect. All the results shed light on the improvement of NF-like FO by regulating the formation of the active layer via the LbL assembly.

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“…Ni (II) [145] Carbon based nanomaterial MnO2-coated CNTs Hg (II) [146] Polymer-based nanomaterials Cellulose/ZrO2 nanohybrid Ni (II) [147] chromium, and copper. Figure 3 shows the procedure of PEI/LS membrane formation [97].…”

Section: γ-Al2o3mentioning

confidence: 99%

Nanotechnology for the bioremediation of organic and inorganic compounds in aquatic ecosystem/marine ecosystem

Kaul¹,

Sharma²

2022

J App Biol biotech

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There has been a rapid increase in the usage of carcinogenic organic and inorganic compounds such as dyes, heavy metals, and phenols due to the rise in industrialization. Around 70% of the industrial effluents are dumped into the aquatic system without being treated where they pollute the usable water supply. These elements can also harm the human health by entering the food chain. According to the current population growth rate, 3.5 billion people are expected to face water scarcity by 2025. Therefore, the need to eliminate these pollutants is growing day by day. Nanobioremediation, a combination of bioremediation and nanotechnology is a competent way to remove contaminants from aquatic systems as it is a non-toxic, cost-effective, and less time-consuming approach. Nanotechnology has compelling capability, and thus, the applications of nanoparticles will escalate in the near future, and it will be a significant part of sustainable development. This review summarizes how various nanomaterials have the potential to degrade contaminants and how it can be used in the form of adsorbents, sensors, membranes, nano-catalysts, and nano-filters to remediate contaminants from marine systems. In addition to this, various limitations of nanobioremediation and the factors responsible for efficiency of nanomaterials are also discussed in this review paper.

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Nanofiltration Membranes via Layer-by-layer Assembly and Cross-linking of Polyethyleneimine/Sodium Lignosulfonate for Heavy Metal Removal

Cited by 22 publications

References 43 publications

Recent progress in sulfur-containing technical lignin-based polymer composites

Recent progress in sulfur-containing technical lignin-based polymer composites

Unraveling Distinct FO Performance of NF-Like Membranes Fabricated by Deposition of Bilayers Containing Polyamines with Minor Structural Differences

Nanotechnology for the bioremediation of organic and inorganic compounds in aquatic ecosystem/marine ecosystem

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