Lignin hydrogel-based solar-driven evaporator for cost-effective and highly efficient water purification

Jiang, Shan; Zhang, Zhengze; Zhou, Tong; Duan, Sicong; Yang, Zhouli; Ju, Yujun; Jia, Chao; Lu, Xiaoquan; Chen, Fengjuan

doi:10.1016/j.desal.2022.115706

Cited by 37 publications

(11 citation statements)

References 50 publications

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“…1 Versatile chitosan aerogel [38] 1.57 2 Carbonized mushrooms [39] 1.48 3 Porous carbon @MnO 2 [40] 1.72 4 Lignin hydrogel-based solar-driven evaporator [41] 2.25 5 Wood-derived aerogel [42] 1.35…”

Section: Numbermentioning

confidence: 99%

Biochar‐based interfacial evaporation materials derived from lignosulfonate for efficient desalination

Chen

Sun

Huang

et al. 2023

Carbon Neutralization

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The solar-driven interfacial evaporation has attracted great attention for the purpose of alleviating freshwater shortage. Lignosulfonate (LS), a main byproduct of sulfite pulping processes, is an abundant natural resource but has not been reasonably utilized. To mitigate the above problems, biochar-based interfacial evaporators derived from LS for solar steam generation were studied in this paper. First, LS was used as a raw material for fabricating carbon materials by carbonization to construct LS-derived carbon (CLS). Meanwhile, LS-derived porous carbon (PCLS) in the presence of CaCO 3 as the activator was also prepared.Next, the two biochar powders, as solar absorbers, were crosslinked with polyvinyl alcohol to prepare the interfacial evaporation materials (PVA@PCLS and PVA@CLS). The open porous structure facilitated the capillary effect and water transport to the evaporator surface. It was also found that the light absorption of the materials could reach more than 97% in the 250-2500 nm range. Moreover, the water evaporation rate and the solar-to-vapor conversion efficiency of PVA@PCLS and PVA@CLS were 2.33, 1.82 kg m −2 h −1 , and 83.7%, 69.3% respectively under 1 sun (1kWm −2 ) irradiation. The solar-to-vapor conversion efficiency of PVA@PCLS was much increased after the carbonization of LS. In addition, the material cost of PVA@PCLS is only $38.3/kg due to the low price of LS. Therefore, this work provides an economic and efficient strategy for solar-driven desalination and a possible way for the high-value utilization of lignin.

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Section: Numbermentioning

confidence: 99%

Biochar‐based interfacial evaporation materials derived from lignosulfonate for efficient desalination

Chen

Sun

Huang

et al. 2023

Carbon Neutralization

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“…8b). 87 Thanks to the 3D macro/ mesoporous structure and excellent hydrophilic property, the LIG hydrogel at the bottom layer not only decreased the evaporation enthalpy of water, but also boosted the water transport. Therefore, the as-prepared LIG hydrogel-based evaporator demonstrated a high solar distillation rate of 2.25 kg m À2 h À1 , as well as excellent stability, durability, and anti-salt accumulation performance.…”

Section: Solar Distillationmentioning

confidence: 99%

Robust and multifunctional natural polyphenolic composites for water remediation

Zhang

et al. 2022

Mater. Horiz.

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“…[ 18 ] The hydroxyl functional groups of lignin can interact with water molecules through noncovalent interactions to tune the water state and facilitate intermediate water formation, which is critical to improving the evaporation rate of biomass‐based hydrogel evaporators. [ 19 ] Low thermal conductivity of lignin provides excellent thermal insulation for minimizing the heat loss to the bulk water. [ 20 ] Furthermore, lignin has a 3D network structure and a high carbon content of up to 60%.…”

Section: Introductionmentioning

confidence: 99%

“…[1] Under these urgent circumstances, interfacial solar steam generation (ISSG), a desalination technology, provides a sus tainable means for conquering the problems, [2] since ISSG can produce clean drinkable water from seawater with high water state and facilitate intermediate water formation, which is critical to improving the evaporation rate of biomassbased hydrogel evaporators. [19] Low thermal conductivity of lignin provides excellent thermal insulation for minimizing the heat loss to the bulk water. [20] Furthermore, lignin has a 3D network structure and a high carbon content of up to 60%.…”

Section: Introductionmentioning

confidence: 99%

Fully Lignocellulosic Biomass‐Based Double‐Layered Porous Hydrogel for Efficient Solar Steam Generation

Lin

Wang

Hong

et al. 2022

Adv Funct Materials

127

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Solar-driven interfacial evaporation is an important approach for solving the issue of freshwater scarcity. However, the practical application of solar steam generation is hindered by high fabrication cost and environmental concerns regarding the petroleum-based materials. Herein, lignocellulose (celluloselignin composite) hydrogel (LCG) and lignin-derived carbon (LC) are used as the substrate and photothermal material, respectively, to construct a fully lignocellulose-based double-layered hydrogel (LC@LCG) evaporator. Results indicate that LC has an ultrahigh specific surface area and full-spectrum solar absorption of 98%. The presence of lignin can improve the hydrophilicity and maintain the capillary channels of the hydrogel, which tunes water into an intermediate state and reduces the vaporization enthalpy of water. Moreover, it ensures a high water transport rate in the hydrogel. Based on these advantages, the evaporation rate and photothermal conversion efficiency of hydrogel evaporator reach 1.84 kg m −2 h −1 under one sun and 86.5%, respectively. The lignocellulosic hydrogel evaporator could remove >99.95% of primary metal ions from seawater to generate fresh water, and shows outstanding salt resistance, durability, and long-term stability for desalination. This study demonstrates an eco-friendly and economic solution for continuous freshwater production from seawater using a fully lignocellulosic biomass-based hydrogel evaporator.

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Lignin hydrogel-based solar-driven evaporator for cost-effective and highly efficient water purification

Cited by 37 publications

References 50 publications

Biochar‐based interfacial evaporation materials derived from lignosulfonate for efficient desalination

Biochar‐based interfacial evaporation materials derived from lignosulfonate for efficient desalination

Robust and multifunctional natural polyphenolic composites for water remediation

Fully Lignocellulosic Biomass‐Based Double‐Layered Porous Hydrogel for Efficient Solar Steam Generation

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