Idachaba Michael A, Nyavor Kafui, Egiebor Nosa O
Environmental Engineering Program, Department of Chemical Engineering, Tuskegee University, Tuskegee, AL 36088, USA.
J Hazard Mater. 2002 Mar 29;90(3):279-95. doi: 10.1016/s0304-3894(01)00359-4.
A refined biofilm formation method was used to evaluate the stability of a simulated liquid waste form containing a simulated liquid waste (salts) and cement in three different proportions, and a simulated solid waste form containing a simulated solid waste (resin) and cement in three different proportions. The experimental samples of all the simulated liquid waste forms showed evidence of microbial growth on them after 3 days of evaluation as indicated by substantial increase in sulfate production, and exhibited considerable instability to microbial degradation as indicated by substantial leaching of calcium. The experimental samples of all the simulated solid waste forms showed evidence of inhibition of growth of Thiobacillus thiooxidans for about 18 days, after which the growth of the microbe became evident in two out of three. Within the growth inhibition period, the differences between experimental and control samples were minor. After the growth of T. thiooxidans became evident, comparatively higher degradations were observed for the experimental samples of the resin containing solid waste forms.
采用一种优化的生物膜形成方法，对含有模拟废液（盐类）和水泥的三种不同比例的模拟液态废物形式，以及含有模拟固体废物（树脂）和水泥的三种不同比例的模拟固态废物形式的稳定性进行评估。在评估3天后，所有模拟液态废物形式的实验样品上均显示出微生物生长的迹象，表现为硫酸盐产量大幅增加，并且钙大量浸出表明其对微生物降解具有相当大的不稳定性。所有模拟固态废物形式的实验样品均显示出对氧化硫硫杆菌生长的抑制作用持续约18天，之后在三种样品中有两种出现了该微生物的明显生长。在生长抑制期内，实验样品与对照样品之间的差异较小。氧化硫硫杆菌生长明显后，观察到含树脂的固态废物形式的实验样品有相对较高的降解率。
