Enhanced removal of scaling cations from oilfield produced water by carrier mineral floatation.
Enhanced removal of scaling cations from oilfield produced water by carrier mineral floatation.
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DOI：
10.2166/wst.2021.478
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发表时间：
2021-11
期刊：
影响因子：
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通讯作者：
Hao Sun;Yuwen Liu;Dandan Liu;Shaoming Li;Xiaoqing Li;Haitao Chen;Z.-Y. Han;Lei Li;Xiaobing Li
中科院分区：
文献类型：
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作者：
Hao Sun;Yuwen Liu;Dandan Liu;Shaoming Li;Xiaoqing Li;Haitao Chen;Z.-Y. Han;Lei Li;Xiaobing Li
这项工作报告了一种新颖的载体浮选方案，用于从油田采出水源中去除结垢阳离子，该方案通过采用石英、蒙脱石和滑石等天然矿物作为结垢阳离子载体，显着降低了捕收剂的消耗。所有载体矿物上结垢阳离子的吸附均表现出均匀的单层吸附，主要以物理吸附为主。添加油酸捕收剂后，结垢阳离子去除率进一步提高，这归因于其与结垢阳离子的高亲和力。值得注意的是，滑石浮选工艺同时提供了较高的结垢阳离子去除率（76.1%）和矿物回收率（98.3%），使泥沙产量减少了72.2%。通过总结表征结果，还提出了结垢阳离子去除机制。此外，所提出的再生方案实现了高再生效率（三个循环内石英和滑石再生效率分别为 86.1% 和 84.8%）。这种载体浮选方案具有低捕收剂消耗的特点，为从油田采出水中去除结垢阳离子提供了技术前景。
This work reports a novel carrier flotation protocol for removing scaling cations from an oilfield produced water source which significantly reduces the collector consumption by employing natural minerals such as quartz, montmorillonite and talcum as the scaling cations carriers. The scaling cations uptake onto all carrier minerals exhibited homogeneous and monolayer adsorption, which was mainly dominated by physisorption. After adding oleate collector, the scaling cations removal rate was further enhanced, which was attributed to its high affinity with the scaling cations. Notably, the talcum flotation process simultaneously offered a high scaling cations removal rate (76.1%) and mineral recovery rate (98.3%), which achieved a sediment yield reduction of 72.2%. By summarizing the characterization results, the scaling cations removal mechanisms were also proposed. Moreover, high regeneration efficiencies (86.1% and 84.8% for quartz and talcum regeneration within three cycles) were achieved by the proposed regeneration protocol. This carrier flotation protocol with its low collector consumption offered technical promise for scaling cations removal from oilfield produced water.