The relationship between unconfined compressive strength and leachate concentration of stabilised contaminated sediment
The relationship between unconfined compressive strength and leachate concentration of stabilised contaminated sediment
复制标题
稳定化污染底泥无侧限抗压强度与渗滤液浓度的关系
DOI：
10.1088/1757-899x/160/1/012054
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
C. Chan
中科院分区：
文献类型：
--
作者：
M. Aliyu;A. T. A. Karim;C. Chan
采用固化/稳定化（S/S）技术对污染河流底泥中的铜进行固定化处理。通过掺入硫酸铜（CuSO 4·5 H2O）溶液对沉积物进行人工污染，以获得平均1000 ppm的目标浓度。采用波特兰复合水泥和稻壳灰（RHA）作为S/S剂。水泥掺量为10%，稻壳灰掺量为5%、10%、15%、20%，养护7、14、28天。采用无侧限抗压强度试验（UCS）和毒性特征浸出程序（TCLP）来评价S/S处理的有效性。从所获得的结果表明，部分取代水泥与RHA的粘合剂系统中增加了强度和浸出液浓度的铜是较少的处理后的沉积物样品，如果与未处理的。
Solidification/Stabilization (S/S) treatment was used in this study to immobilise copper (Cu) in contaminated river sediment. The sediment was artificially contaminated by spiking the solution of Copper sulphate (CuSO4.5H2O) to so as to get an average of 1000 ppm target concentration. Portland composite cement and Rice husk ash (RHA) were used as S/S agents. The amount of cement added to the mixture was l0% and while rice husk ash at the rate of 5%, l0%, 15% and 20% to the total dry weight of the mixture and then was cured for 7, 14 and 28 days. The unconfined compressive strength test (UCS) and toxicity characteristic leaching procedure (TCLP) were used to evaluate the effectiveness of the S/S treatments. From the results obtained it indicates that the partial replacement of cement with RHA in the binder system has increased the strength and the leachate concentration of copper was less in the treated sediment samples if compared with the untreated ones.