Volume 10, Issue 12 2200900
Research Article

Biomass Waste-Derived Solar Evaporator for Efficient and Low-Cost Water Evaporation

Sainan Ma

Sainan Ma

Ningbo Research Institute, Zhejiang University, Ningbo, Zhejiang Province, 315000 China

The State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang Province, 310027 China

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Qianqian Wang

Qianqian Wang

Ningbo Research Institute, Zhejiang University, Ningbo, Zhejiang Province, 315000 China

The State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang Province, 310027 China

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Ke Chen

Ke Chen

Ningbo Research Institute, Zhejiang University, Ningbo, Zhejiang Province, 315000 China

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Weiyong Yuan

Weiyong Yuan

Ningbo Research Institute, Zhejiang University, Ningbo, Zhejiang Province, 315000 China

The State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang Province, 310027 China

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Xiang Gao

Xiang Gao

The State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang Province, 310027 China

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Nian Li

Corresponding Author

Nian Li

Ningbo Research Institute, Zhejiang University, Ningbo, Zhejiang Province, 315000 China

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Neng Gao

Neng Gao

Institute of Energy and Environment Engineering, NingboTech University, Ningbo, Zhejiang Province, 315000 China

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First published: 08 October 2022
Citations: 2

Abstract

Solar-driven interfacial water evaporation is a green and energy-saving water treatment technology, yet key issues remain the low efficiency, high cost, and complicated fabrication of solar evaporators. With a unique natural structure, good environmental friendliness, and low cost, biomass-based materials have attracted extensive research interest as solar absorbers. Herein, banana peel, one of the most common biomass wastes, is adopted as raw material for solar water evaporation and subjected to a carbonization process. The carbonized banana peel (CBP) presents a dark rough surface and a hierarchically inner porous structure, resulting in good solar absorption and water transfer ability. Consequently, a high water evaporation rate of 1.35 kg m−2 h−1 and corresponding solar-to-vapor conversion efficiency of 87.5% are achieved under 1 sun irradiation. Furthermore, the CBP also exhibits outstanding performance in seawater desalination and wastewater purification. This work demonstrates a sustainable strategy for low-cost and efficient solar-driven water purification.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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