Detection and monitoring of leaked CO2 through sediment, water column and atmosphere in a sub-seabed CCS experiment
Detection and monitoring of leaked CO2 through sediment, water column and atmosphere in a sub-seabed CCS experiment
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海底 CCS 实验中通过沉积物、水柱和大气泄漏的 CO2 的检测和监测
DOI：
10.1016/j.ijggc.2014.12.011
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发表时间：
2015
影响因子：
3.9
通讯作者：
Shitashima K
中科院分区：
文献类型：
--
作者：
Shitashima K
目前正在研究在海底地质构造中捕获和储存碳（海底碳捕获和储存），将其作为减缓大气中人为二氧化碳积累的一个现实选择。在实施海底CCS的过程中，探测和监测封存的CO2对海洋环境的影响非常重要。2012年5 - 9月，在美国奥班Ardmucknish湾开展了第一次CO2控制释放实验--地质碳封存对潜在生态系统影响的定量与监测（QICS）。电缆实时传感器被部署在靠近CO2泄漏（起泡）区域，并在陆基容器中监测海底上方的原位pH值和pCO 2的波动。长期传感器被放置在三个不同观测区的海底。将沉积物pH传感器插入CO2泄漏区域附近海底下50 cm深的沉积物中。利用装有传感器的自主式水下航行器（AUV）对CO2泄漏区附近水体pH和pCO 2进行了广域测绘。利用CO2气体分析仪对泄漏区上方的大气CO2进行了观测，结果表明，泄漏区大气CO2的释放行为与潮汐周期（低潮或高潮）密切相关。低潮时，CO2气泡的强烈喷发使沉积物和上覆海水pH值降低，CO2迅速上升到海面，少量溶解到海水中，扩散到大气中。另一方面，由于较高的水压，在高潮时CO2气泡的释放量较低，并且检测到轻微的低pH海水和高大气CO2。停止注CO2后，沉积物和上覆水体pH值连续3个月无明显变化。
Carbon capture and storage in sub-seabed geological formations (sub-seabed CCS) is currently being studied as a realistic option to mitigate the accumulation of anthropogenic CO2in the atmosphere. In implementing sub-seabed CCS, detecting and monitoring the impact of the sequestered CO2on the ocean environment is highly important. The first controlled CO2release experiment, Quantifying and Monitoring Potential Ecosystem Impacts of Geological Carbon Storage (QICS), took place in Ardmucknish Bay, Oban, in May–September 2012.We applied the in situ pH/pCO2sensor to the QICS experiment for detection and monitoring of leaked CO2, and carried out several observations. The cabled real-time sensor was deployed close to the CO2leakage (bubbling) area, and the fluctuations of in situ pH and pCO2above the seafloor were monitored in a land-based container. The long-term sensor was placed on seafloor in three different observation zones. The sediment pH sensor was inserted into the sediment at a depth of 50 cm beneath the seafloor near the CO2leakage area. Wide-area mapping surveys of pH and pCO2in water column around the CO2leakage area were carried out by using an autonomous underwater vehicle (AUV) installed with sensors. Atmospheric CO2above the leakage area was observed by using a CO2analyzer that was attached to the bow of ship of 50 cm above the sea-surface.The behavior of the leaked CO2is highly dependent on the tidal periodicity (low tide or high tide) during the CO2gas release period. At low tide, the pH in sediment and overlying seawater decreased due to strong eruption of CO2gas bubbles, and the CO2ascended to sea-surface quickly with a little dissolution to seawater and dispersed into the atmosphere. On the other hand, the CO2bubbles release was lower at high tide due to higher water pressure, and slight low pH seawater and high atmospheric CO2were detected. After stopping CO2gas injection, no remarkable variations of pH in sediment and overlying water column were observed for three months.
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影响因子：
3.9
作者：
Y. Maeda;K. Shitashima;A. Sakamoto
通讯作者：
Y. Maeda;K. Shitashima;A. Sakamoto
使用玻璃/参比电极池测定海水 pH 值
DOI：
--
发表时间：
1994
期刊：
影响因子：
--
作者：
A. Dickson
通讯作者：
A. Dickson
影响因子：
3.4
作者：
K. Shitashima;Y. Maeda;T. Ohsumi
通讯作者：
K. Shitashima;Y. Maeda;T. Ohsumi
使用 ISFET 开发原位 pH 传感器
DOI：
10.1109/ut.2002.1002403
发表时间：
2002
期刊：
Proceedings of the 2002 Interntional Symposium on Underwater Technology (Cat. No.02EX556)
影响因子：
--
作者：
K. Shitashima;M. Kyo;Y. Koike;H. Henmi
通讯作者：
H. Henmi
对北海及周边水域海底水库或管道泄漏的二氧化碳的物理化学影响进行小规模建模。
影响因子：
5.8
作者：
Dewar M
通讯作者：
Dewar M