Renewable biomass reinvigorates sustainable water-energy nexus

Hongxu Chen ¹Jiatao Xu ²Zhiyong Jason Ren ³Hailong Lin ²Leli Zhang ²E.Reaihan ²Yanhao Yuan ²Zihan Wang ⁴Zhidan Liu²

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作者信息

1. Laboratory of Environment-Enhancing Energy(E2E),College of Water Resources and Civil Engineering,China Agricultural University,Beijing 100083,China;Key Laboratory of Agricultural Engineering in Structure and Environment,Ministry of Agriculture and Rural Affairs,Beijing 100083,China;Department of Civil and Environmental Engineering,Princeton University,Princeton NJ 08544,USA;Andlinger Center for Energy and the Environment,Princeton University,Princeton NJ 08544,USA;Department of Earth and Environmental Engin
2. Laboratory of Environment-Enhancing Energy(E2E),College of Water Resources and Civil Engineering,China Agricultural University,Beijing 100083,China;Key Laboratory of Agricultural Engineering in Structure and Environment,Ministry of Agriculture and Rural Affairs,Beijing 100083,China;State Key Laboratory of Efficient Utilization of Agricultural Water Resources,Beijing 100083,China
3. Department of Civil and Environmental Engineering,Princeton University,Princeton NJ 08544,USA;Andlinger Center for Energy and the Environment,Princeton University,Princeton NJ 08544,USA
4. Laboratory of Environment-Enhancing Energy(E2E),College of Water Resources and Civil Engineering,China Agricultural University,Beijing 100083,China;Key Laboratory of Agricultural Engineering in Structure and Environment,Ministry of Agriculture and Rural Affairs,Beijing 100083,China
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Abstract

The water-energy nexus has garnered worldwide interest.Current dual-functional research aimed at co-producing freshwater and electricity faces significant challenges,including sub-optimal capacities("1+1＜2"),poor inter-functional coordination,high carbon footprints,and large costs.Mainstream water-to-electricity conversions are often compromised owing to functionality separation and erratic gradients.Herein,we present a sustainable strategy based on renewable biomass that addresses these issues by jointly achieving competitive solar-evaporative desalination and robust clean electricity generation.Using hydrothermally activated basswood,our solar desalination exceeded the 100％efficiency bottle-neck even under reduced solar illumination.Through simple size-tuning,we achieved a high evaporation rate of 3.56 kg h-1 m-2 and an efficiency of 149.1％,representing 128％-251％of recent values without sophisticated surface engineering.By incorporating an electron-ion nexus with interfacial Faradaic elec-tron circulation and co-ion-predominated micro-tunnel hydrodynamic flow,we leveraged free energy from evaporation to generate long-term electricity(0.38 W m-3 for over 14 d),approximately 322％of peer performance levels.This inter-functional nexus strengthened dual functionalities and validated gen-eral engineering practices.Our presented strategy holds significant promise for global human-society-environment sustainability.

Key words

Biomass/Water-energy nexus/Solar desalination/Clean energy/Hydrothermal carbonization/Sustainable development

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基金项目

National Natural Science Foundation of China(U21A20162)

National Natural Science Foundation of China(52261145701)

2115 Talent Development Program of China Agricultural University()

出版年

2024

科学通报(英文版)

中国科学院

科学通报(英文版)

CSTPCD

ISSN：1001-6538

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