Premium
A new type synthetic filter material for biofilter: Poly(vinyl alcohol)/peat composite bead
Author(s) -
Chan WuChung,
Lu MingCun
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.12137
Subject(s) - bead , composite number , adsorption , materials science , biofilter , composite material , vinyl alcohol , porosity , vinyl acetate , chemical engineering , compressive strength , chemistry , waste management , organic chemistry , polymer , copolymer , engineering
In this study, a new type of poly(vinyl alcohol) (PVA)/peat composite bead was prepared and was proved suitable as a filter material in the biofiltration process. The composite bead is a porous spherical particle and has a diameter of 2.4–6.0 mm and a density of 0.69 kg/cm 3 . It contains 3.25 mg N/g dry solid and 2.91 mg P/g dry solid. The equilibrium moisture content of the composite bead for adsorption and holding experiments is 50.5 and 66.8% by wet basis, respectively. The initial compression strength of the composite bead is 0.32 kg/cm 2 . It has higher moisture holding capacity and compression strength than pig manure compost filter material. The adsorption behavior of ethyl acetate and composite bead follows the Freundlich adsorption isotherm. The composite bead has buffer capacity and could keep the filter bed at pH = 6.9–7.2 during operating. The percentage of removed ethyl acetate was 99% for up to 33 days as the composite bead adsorbed nutrients. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 3248–3255, 2003