蒲绒-芦苇机械混合复合材料的吸油性能

2010年本实验室开始生物质对柴油的吸附实验,和前人的结论一致,生物质热改性后其吸油和漂浮性能提高,但成本增加很多。受到前人复合吸油材料的启发,2012年开展了蒲绒-芦苇机械混合复合材料吸油和漂浮性能的研究,并采用正交实验对影响除油效果的因素进行优化。结果表明,蒲绒-芦苇复合材料较之芦苇吸油性能提高,且比各组分的叠加饱和吸油量还高。震荡使芦苇的漂浮率明显降低,但对蒲绒及复合材料的影响较小。正交实验结果显示,投加量0.7 g,油膜厚度0.55 mm,不震荡时,蒲绒除油最佳;在相同条件下,粒径为380~500 μm的芦苇除油最佳,蒲绒和该粒径的芦苇按质量比为1:4混合成的复合材料的除油效果最佳。

Sorption characteristics of mechanically mixed composite of cattail and reed as oil sorbent

In 2010, the research on adsorbing diesel by biomass materials was carried out in our lab. Consistent with previous studies, both floating and adsorption performance of thermally modified biomass were improved, while the cost increased a lot. Inspired by previous studies on oil-absorbing composite materials, both the floating and sorption performance of mechanically mixed composite of cattail and reed were experimentally investigated in 2012, and the factors affecting removal rates were optimized by orthogonal experimental method. The result showed that adsorption capacity of cattail-reed composite was larger than reed, and even larger than the superposition value of cattail and reed. The buoyancy of reed sharply decreased under oscillation conditions, while cattail and the composite were lesser. The optimum conditions for removal rate of cattail were as follows: adsorbent dosage of 0.7 g, oil film thickness of 0.55 mm, oscillation frequency of 0 r/min. Under the same conditions, the particle size of reed that could remove most of the oil was 380~500 μm and the best removal rate of the composite was found when the mass ratio of cattail and reed with the same particle size was 1:4.