Effect of an Anionic Surfactant on Hydraulic Conductivities of Sodium- and Calcium-Saturated Soils

RAO Pin-Hua; HE Ming; YANG Xian; ZHANG You-Chi; SUN Shou-Qin; WANG Jiang-Sheng

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Effect of an Anionic Surfactant on Hydraulic Conductivities of Sodium- and Calcium-Saturated Soils

机译：阴离子表面活性剂对钠和钙饱和土壤水力传导率的影响

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The effect of sodium dodecylbenzenesulfonate (SDBS), an anionic surfactant used widely in household products and industrial processes, on saturated hydraulic conductivities (Ksat) of an Anthrosol saturated with sodium (Na-soil) or calcium (Ca-soil) was analyzed in a laboratory experiment using the constant head method, and adsorption and dispersion experiments were also conducted to infer the possible mechanisms of Ksat fluctuations. The results showed that SDBS was more intensely adsorbed in the Ca-soil than in the Na-soil. With an increase in the SDBS concentration, the stability of the Na-soil suspensions decreased when the SDBS concentration was less than 1.2 mmol L-1 and then above this concentration,increased markedly, while the stability of the Ca-soil suspensions increased gradually at all SDBS concentrations studied.With an increase in the SDBS concentration, the Ksat of the Na-soil increased, which resulted mainly from the increase of water channels in the soil because of the coagulation of the soil particles, while the Ksat of Ca-soil decreased mainly on account of the clogging of partial water channels by precipitated Ca(DBS)2 and the fine soil particles generated.

机译：分析了十二烷基苯磺酸钠（SDBS）（一种广泛用于家庭产品和工业过程中的阴离子表面活性剂）对饱和钠（Na-土）或钙（Ca-土）的人烟油的饱和水导率（Ksat）的影响。使用恒压头法进行实验室实验，并进行吸附和分散实验以推断Ksat波动的可能机理。结果表明，SDBS在Ca-土壤中的吸附比在Na-土壤中的吸附更为强烈。随着SDBS浓度的增加，当SDBS浓度低于1.2 mmol L-1时，Na-土壤悬浮液的稳定性降低，然后高于该浓度，则显着增加，而Ca-BS悬浮液的稳定性在60°C时逐渐增加。随着SDBS浓度的增加，Na-土壤的Ksat增加，这主要是由于土壤颗粒的凝结导致土壤中水通道增加，而Ca-土壤的Ksat减少的主要原因是沉淀的Ca（DBS）2堵塞了部分水通道，并产生了细的土壤颗粒。

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来源
《土壤圈（英文版）》 |2006年第5期|673-680|共8页
作者
RAO Pin-Hua; HE Ming; YANG Xian; ZHANG You-Chi; SUN Shou-Qin; WANG Jiang-Sheng;
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作者单位

Department of Resource and Environmental Sciences, Shanghai Jiaotong University, Shanghai 201101 (China);

Department of Resource and Environmental Sciences, Shanghai Jiaotong University, Shanghai 201101 (China);

Department of Resource and Environmental Sciences, Shanghai Jiaotong University, Shanghai 201101 (China);

Department of Resource and Environmental Sciences, Shanghai Jiaotong University, Shanghai 201101 (China);

Department of Resource and Environmental Sciences, Shanghai Jiaotong University, Shanghai 201101 (China);

Design Department of Binnan Oil Production Plant, SINOPEC Shengli Oilfield Company, Binzhou 256606 (China);

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收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 chi
中图分类农业基础科学;
关键词
adsorption; anionic surfactant; calcium-saturated soil; hydraulic conductivity; sodium-saturated soil;

机译：吸附;阴离子表面活性剂;钙饱和土壤;水电导率;钠饱和土壤;

Effect of an Anionic Surfactant on Hydraulic Conductivities of Sodium- and Calcium-Saturated Soils

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