Abstract

The transport characteristics of manganese was investigated by soil columns experiments and provide essential data for aquifer remediation and groundwater protection in Yinchuan City. Soil column experiments involved a solution of manganese chloride in which the chloride ion was the chemical tracer. In the two column experiments, the breakthrough curve (BTC) for Cl^– revealed the average linear flow velocity (2.937 and 3.921 cm/h) and longitudinal dispersivity (8.52 and 40.09 cm) of the sediment. The BTC of Mn²⁺ showed a significant delay compared to Cl^–. The adsorptive equilibrium isotherm experiments showed that Ca²⁺ was the main desorption cation in the cation exchange process. The nonlinear retardation factor R_f (R_fTM-1 = 13.97, R_fTS-1 = 12.89) of Mn²⁺ is derived from thermodynamic principles.

摘要

通过土壤柱试验研究了锰的迁移特征，为银川市含水层修复和地下水保护提供了重要数据。土壤柱实验涉及氯化锰溶液，其中氯离子为化学示踪剂。在两个的实验中，穿透曲线（BTC），用于氯^-揭示的沉降物的平均线性流速（2.937和3.921厘米/ h）和纵向弥散（8.52和40.09厘米）。MN的BTC ²⁺表现出显著延迟相比氯^- 。吸附等温吸附实验表明，Ca ²⁺是阳离子交换过程中的主要脱附阳离子。非线性延迟因子RMn ^2+的_f（R _fTM-1 = 13.97，R _fTS-1 = 12.89）是从热力学原理得出的。