Waste Egg Tray and Toner-Derived Highly Efficient 3D Solar Evaporator for Freshwater Generation

Md Nahian Al Subri Ivan, Ahmed Mortuza Saleque, Safayet Ahmed, Ping Kwong Cheng, Junpeng Qiao, Tawsif Ibne Alam, Yuen Hong Tsang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

29 Citations (Scopus)


With the advancement of civilization, water purification, as well as management and disposal of ever-increasing municipal solid waste (MSW), and e-waste, have become global concerns. To address these issues in a sustainable way, a 3D solar evaporator has been proposed in this paper by repurposing recycled paper from MSW in the form of egg trays and waste dry toner (e-waste) using a facile fabrication method. The unique 3D porous structure, fibrous surface, superior water absorbing capability as well as low thermal conductivity of wastepaper-derived egg trays make them an excellent candidate for an efficient solar evaporator, while the waste toner powder coating significantly enhances the optical absorbance capacity. Under 1 sun illumination, the proposed solar evaporator demonstrates an excellent evaporation rate and efficiency of 1.3 kg/m2 h and 78.5%, respectively. Moreover, the competitive advantage of the 3D structure in collecting solar irradiance at various light incident angles in comparison to a 2D structure, excellent cycle stability, low processing temperature, and the use of low-cost waste materials enable its use for large-scale water purification systems.

Original languageEnglish
Pages (from-to)7936-7948
Number of pages13
JournalACS Applied Materials and Interfaces
Issue number6
Publication statusPublished - 16 Feb 2022


  • egg tray
  • interfacial solar steam generation
  • municipal solid waste
  • solar energy
  • waste toner

ASJC Scopus subject areas

  • Materials Science(all)


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