Adsorption behavior and mechanism of amine/quaternary ammonium lignin on tungsten

Zhang, Baoping; Zhang, Heng; Wang, Yin; Fang, Shiyuan

doi:10.1016/j.ijbiomac.2022.07.226

Cited by 24 publications

(4 citation statements)

References 32 publications

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“…Comparing the full spectra of ELS and AELS, the N 1 s peak intensity of AELS increased, which demonstrates the introduction of amine groups. The ratios of C and O had increased, due to the introduction of amine groups with an alkyl group on the carbon chain of lignin, resulting in a higher carbon content and a lower oxygen content, consistent with the EDS results [ 29 ]. As shown in Figure 6 b, a new -NH peak appeared at 401 eV accompanied by a rise in -NH 2 intensity at 399 eV.…”

Section: Resultssupporting

confidence: 86%

Preparation of Aminated Sodium Lignosulfonate and Efficient Adsorption of Methyl Blue Dye

Huo,

Guo,

Gong

et al. 2024

Materials

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The aminated sodium lignosulfonate (AELS) was prepared through a Mannich reaction and characterized via FT-IR, TG, SEM and XPS in this study. Subsequently, the adsorption capacity of AELS for methyl blue (MB) was evaluated under various conditions such as pH, adsorbent dosage, contact time, initial concentration and temperature. The adsorption kinetics, isotherms and thermodynamics of AELS for methyl blue were investigated and analyzed. The results were found to closely adhere to the pseudo-second-order kinetic model and Langmuir isotherm model, suggesting a single-molecular-layer adsorption process. Notably, the maximum adsorption capacity of AELS for methyl blue (153.42 mg g−1) was achieved under the specified conditions (T = 298 K, MAELS = 0.01 g, pH = 6, VMB = 25 mL, C0 = 300 mg L−1). The adsorption process was determined to be spontaneous and endothermic. Following five adsorption cycles, the adsorption capacity exhibited a minimal reduction from 118.99 mg g−1 to 114.33 mg g−1, indicating good stability. This study contributes to the advancement of utilizing natural resources effectively and sustainably.

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Section: Resultssupporting

confidence: 86%

Preparation of Aminated Sodium Lignosulfonate and Efficient Adsorption of Methyl Blue Dye

Huo,

Guo,

Gong

et al. 2024

Materials

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“…FTIR was used to prove the interaction between the Zn electrode and Bet (Figure e). It can be found that, after soaking Zn foil in ZnSO 4 –B 5 electrolyte, the characteristic peak of the ammonium bond N + –C (1080 cm –1 ) in Bet appears to obviously blue-shift, indicating the strong interaction between the Bet and the Zn foil . Considering the application of surface tension in hydrophilicity, we tested the surface tension of the electrolyte.…”

Section: Resultsmentioning

confidence: 99%

“…It can be found that, after soaking Zn foil in ZnSO 4 −B 5 electrolyte, the characteristic peak of the ammonium bond N + −C (1080 cm −1 ) in Bet appears to obviously blue-shift, indicating the strong interaction between the Bet and the Zn foil. 49 Considering the application of surface tension in hydrophilicity, 50 we tested the surface tension of the electrolyte. As shown in Figure S6, from the surface tension of different electrolytes, it can be found that the surface tension of 2 M ZnSO 4 −B 5 electrolyte is relatively small due to the repulsion between hydrophobic functional groups and water molecules in Bet, which reduces the cohesion between liquids and thus reduces the surface tension of electrolyte.…”

Section: Adsorption Properties Of the Amphiphilic Ionmentioning

confidence: 99%

Promoting Desolvation by Hydrophobic and Zincophilic Adsorption Layer To Achieve Stable Zn Anodes at Low Temperature

Li,

Quan

et al. 2024

ACS Sustainable Chem. Eng.

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Aqueous Zn-based energy storage devices have broad prospects in the direction of large-scale energy storage, but the Zn anode still has problems, such as poor reversibility and unsatisfactory performance at low temperature. Due to the influence of thermodynamics at low temperature, the dissolution of the Zn ion becomes more difficult, which will intensify the growth of Zn dendrites. In this study, amphiphilic-ion Betaine (Bet) was introduced into 2 M ZnSO 4 aqueous electrolyte as an antifreeze to improve the stability of Zn anode at different temperatures. It is found that Bet can not only participate in the solvation structure of the Zn ion but also be adsorbed on the Zn anode surface directionally, ensuring good reaction kinetics at low temperature, which can inhibit the growth of Zn dendrites and improve its electrochemical performance at low temperature. The results show that, due to the introduction of Bet, Zn//Zn symmetric cells can cycle stably for more than 2000 h under 25 °C, and they can also cycle stably for more than 1000 h under an extreme condition of −20 °C. This work provides a reasonable method for the design of low-temperature and high-rate Zn-based energy storage devices.

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“…The cation (NH 4+ ) loaded on dimethyl diallyl ammonium chloride (DMDAAC), a quaternary ammonium salt, could disrupt the EPS structure. Consequently, the bound proteins and polysaccharides were released to enhance the sludge dewatering capability and reduce the moisture content of the active sludge [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Quaternization-based Graft Modification of Straw Fibers for Conditioning the Sludge Dewatering Performance

Zhang,

Zhao,

Yang

et al. 2024

Preprint

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Extracellular polymeric substances (EPS) are a critical influencing factor in sludge dewatering. Disrupting such EPS contributes to the release of bound water in sludge, enhancing the sludge dewatering performance. This study quaternized straw fibers destructive for the EPS structure and components in active sludge were prepared with heterogeneous free radical graft polymerization. Straw fibers, dimethyl diallyl ammonium chloride (DMDAAC), ammonium persulfate (APS), and acrylamide (AM) were taken as the substrate, grafting monomer, catalyst, and cross-linking agent, respectively. The impacts of reaction temperature, reaction time, catalyst dosage, and monomer dosage on the grafting efficiency of straw fibers were explored. Further, the morphology, elemental composition, and structure of the modified fibers were characterized employing scanning electron microscopy (SEM), elemental analysis (EA), and Fourier transform infrared spectroscopy (FTIR), respectively. The optimal processing conditions determined for the DMDAAC-based quaternization and graft modification of straw fibers were as follows: reaction temperature of 60°C, reaction time of 5 h, 0.1 g of catalyst APS dosage per gram of straw, and 3 ml of DMDAAC dosage per gram of straw. The optimal processing conditions yielded 1.335 g of modified straw fibers per gram of straw, 33.5% grafting rate, and 31.70% substitution of the quaternary ammonium groups. The modified straw fibers disrupted the sludge EPS, boosting sludge dewatering. They improved the filtering performance of the sludge. The capillary suction time (CST) was conditioned from 243.3 ± 22.6 s in the original sludge to 134.5 ± 34.45 s. The specific resistance to filtration (SRF) was reduced from 8.82 ± 0.51 × 1012 m/kg in the original sludge to 4.59 ± 0.23 × 1012 m/kg. The modified straw fibers disruptively affected the structure of sludge EPS, significantly changing its content and composition. The proportion of tightly bound extracellular polymeric substances (T-EPS) in the sludge declined from 77–62% due to such modified fibers. Moreover, the protein and polysaccharide contents in soluble extracellular polymeric substances (S-EPS) and loosely bound extracellular polymeric substances (L-EPS) showed an increasing trend.

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Adsorption behavior and mechanism of amine/quaternary ammonium lignin on tungsten

Cited by 24 publications

References 32 publications

Preparation of Aminated Sodium Lignosulfonate and Efficient Adsorption of Methyl Blue Dye

Preparation of Aminated Sodium Lignosulfonate and Efficient Adsorption of Methyl Blue Dye

Promoting Desolvation by Hydrophobic and Zincophilic Adsorption Layer To Achieve Stable Zn Anodes at Low Temperature

Quaternization-based Graft Modification of Straw Fibers for Conditioning the Sludge Dewatering Performance

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