The dehydration processing of banana stems was carried out to obtain plant fiber, and some structure characteristics were tested. An experimental design with different equipment that was studied to discover the effect of the dehydration rate of banana stems. We are trying to extract natural fibers from Hainan immense resources of biological materials. The paper also relates to an equipment for slicing the banana stem into elongated strips and pressing the strips. The result shows that the dehydration rate of banana stem which pressed by Sugarcane Mill (SM) was 57.0%(roots), 58.0% (central) and 51.0% (sheath) respectively. The samples which pressed by Open Roll Mill (ORM) have a lower level of dehydration rate (29.3% of roots, 12.1% of central, 13.5% of sheath, respectively).

This paper aims to characterize Baoluo kaolin and investigate its chemical composition. The Baoluo kaolin was characterized by XRD and SEM. The XRD pattern revealed that the Baoluo kaolin was composed of kaolinite, quartz, little feldspar and mica. Its chemical composition was determined by volumetric method, titration method and flame photometer method. The weight percentages of Al2O3, SiO2, Fe2O3, Na2O and ignition loss in the Baoluo kaolin are 36%, 46%, 0.56%, 1.21% and 12.76%, respectively. The results in this paper would be benefit to industry utilization of the Baoluo kaolin.

The nano-inorganic polymer coagulant, poly-ferric-aluminum-silicate-sulfate (PFASS) modified by quick lime were prepared from oil shale ash, which were evaluated by treating sewage. The following results are discovered: The samples contain (CaO)xSiO2•zH2O, Fe2(SO4)2(OH)•5(H2O), NaAl(SO4)2•(H2O)6 and other crystal; PFASS are complicated compounds by iron, aluminum, silicon and other ions rather than simple mixtures of raw materials. The optimal coagulant dosage is about 80-100 mg/L for the turbidity removal, and the range of the suitable dose is wider for COD removal, the optimal dose of quick lime is 2.5 g for turbidity removal and 3 g for COD removal.