Adsorption characteristics of sulfur powder by bamboo charcoal to restrain sulfur allergies

Abstract

Exposures to particulate matter with a diameter of 2.5 μm or less (PM2.5) may influence the risk of birth defects and make you allergic, which causes serious harm to human health. Bamboo charcoal can adsorb harmful substances,that was of benefitto people's health. In order to figure out the optimal adsorbtion condition and the intrinsic change of bamboo charcoal, five chemicals were adsorbed by bamboo charcoal and were analyzed by FT-IR. The optimal blast time was 80 min of Na₂SO₃, 100 min of Na₂S₂O₈, 20 min of Na₂SO₄, 120 min of Fe₂(SO₄)₃ and 60 min or 100 min of S. FT-IR spectra showed that bamboo charcoal had five characteristic peaks of S-S stretch, H₂O stretch, O-H stretch, C[bond, double bond]O stretch or C[bond, double bond]C stretch, and NO₂ stretch at 3850 cm^-1, 3740 cm^-1, 3430 cm^-1, 1630 cm^-1 and 1530 cm^-1, respectively. For Na₂SO₃, the peaks at 3850 cm^-1, 3740 cm^-1, 3430 cm^-1, 1630 cm^-1 and 1530 cm^-1 achieved the maximum at 20 min. For Na₂S₂O₈, the peaks at 3850 cm^-1, 3740 cm^-1, 3430 cm^-1 and 1530 cm^-1 achieved the maximum at 40 min. For Na₂SO₄, the peaks at 3850 cm^-1, 3740 cm^-1 and 1530 cm^-1 achieved the maximum at 40 min. For Fe₂(SO₄)₃, the peaks at 3850 cm^-1, 3740 cm^-1, 1630 cm^-1 and 1530 cm^-1 achieved the maximum at 120 min. For S, the peaks at 3850 cm^-1 and 3740 cm^-1 achieved the maximum at 40 min, the peaks at 1630 cm^-1 and 1530 cm^-1 achieved the maximum at 40 min. It proved that bamboo charcoal could remove sulfur powder from air to restrain sulfur allergies.

Keywords: Bamboo charcoal; Desulfuration; Fe2(SO4)3; Na2S2O8; Na2SO3; Na2SO4; S.