Fabrication of 3D hydrogel to the treatment of moist air by solar/wind energy in a simulated battery recycle plant salon

摘要

Contaminated air in battery recycling halls threatens the health of factory workers. In this work, a new 3D hydrogel was designed in a simulated salon with an innovative rotary module. The Pb(II), Fe(III) and SO42- was adsorbed from air. Solar energy was transferred by wind to the factory hall and absorbed moisture was evaporated. The hydrophilicity, stability in water and storage of Pb(II) and Fe(III) in the hydrogel were optimized. Brunauer-Emmett-Teller (BET) theory, Field emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD) analysis and Fourier transform infrared spectroscopy (FT-IR) were employed to characterize and analyze the 3D hydrogel. The collector was able to quickly raise the wind temperature to 44 degrees C. In each cycle, in average 60% of air moisture was absorbed on the 3D hydrogel. The evaporation rate was more than 1.4 kg m(-2) h(-1). The efficiency of ions removal in each cycle was 82%. In the 0.68 m(3) min(-1) of wind flow the temperature was 43.3 degrees C and evaporation was done in a shorter time. (C) 2019 Elsevier Ltd. All rights reserved.