Final Report
Final Report
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DOI：
10.2172/1733368
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发表时间：
2020-12
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影响因子：
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通讯作者：
R. Field
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文献类型：
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作者：
R. Field
该项目的目标是构建一个用于电化学海水淡化的自动化电解液输送系统。脱盐剂中的盐浓度需要多次循环才能达到所需的阈值。电解液输送系统将以固定的流速将海水淡化液泵入流动池，直到海水淡化半周期结束；然后，系统将清理流体管路，将盐酸盐泵入流动池，直到盐化半周期结束；并根据需要重复。理想的设计应该具有较低的占地面积，并且应该在最少的监督下运行。项目简介和背景该项目的目标是构思一种自动化的电解液输送系统，用于在大卫·夸比教授和夸比实验室操作的电化学流动池中进行批量海水淡化。夸比实验室的电化学流动池以批处理模式运行，在海水淡化和盐化半周期之间切换。首先从正在进行海水淡化的氯化钠溶液中除去一部分盐，然后在随后的盐化半周期中将盐排放到不同的废电解液储存库中。目前试验中使用的废电解液为高浓度盐水。仅仅一个周期不足以进行有意义的海水淡化。因此，海水淡化-盐化循环被重复多次，以使氯化钠溶液最终达到所需的可饮用阈值。在海水淡化阶段，海水淡化液以恒定的流速被泵入流动池中，并发出外部电信号以指示每个半周期的结束。为了清除脱盐或盐化残渣中的管路，避免两个储罐之间的交叉污染，空气需要在每个半周期开始之前流经系统，并将管路净化到先前连接的储罐中。自动电解液输送系统将驻留在进行海水淡化-盐化循环的同一通风柜中，它将以较低的占地面积和最低的能源消耗高效运行。它将在不需要人工干预的情况下运行长达一周，在每个半周期结束后自动在水库之间切换，并避免氯化钠溶液和盐酸盐之间的交叉污染。初步设计/利益相关者分析我们正在与夸比实验室的夸比教授合作，该实验室专注于液流电池和碳捕获研究。我们将主要与博士生Siddhant Singh和Sanat modak合作。Siddhant的工作新颖，因为它是混合流动细胞，使用单一的鼻腔
The goal of this project is to construct an automated electrolyte delivery system for electrochemical desalination. Multiple cycles are required for the salt concentration in the desalinate to reach the desired threshold. The electrolyte delivery system will pump the desalinate into the flow cell at a fixed flow rate until the end of the desalination half-cycle; the system will then clear the fluid lines, pump the salinate into the flow cell until the salination half-cycle is complete; and repeat as required. The ideal design will have a low footprint and should operate with minimal supervision. PROJECT INTRODUCTION AND BACKGROUND The goal of this project is to conceive an automated electrolyte delivery system for batch desalination in an electrochemical flow cell handled by Professor David Kwabi and the Kwabi Lab. The Kwabi Lab’s electrochemical flow cell operates in batch mode, switching between desalination and salination half-cycles. A fraction of salt is first removed from a sodium chloride solution which is undergoing desalination, and the salt is then discharged into a different waste electrolyte reservoir during the subsequent salination half-cycle. The waste electrolyte used in the current tests is high concentration brine. One cycle alone is not enough for a meaningful amount of desalination to take place. Therefore, the desalination-salination cycle is repeated numerous times for the sodium chloride solution to eventually reach a desired drinkable threshold. The desalinate is pumped into a flow cell at a constant flow rate during the desalination phase, and an external electric signal is emitted to indicate the end of each half-cycle. In order to clear the lines from any desalinate or salinate residue and avoid cross-contamination between the two reservoirs, air will need to flow through the system before the beginning of each half-cycle and purge the lines into the previously connected reservoir. The automated electrolyte delivery system will reside in the same fume hood within which the desalination-salination cycles take place, and it will operate efficiently with a low footprint and minimum energy consumption. It will operate without the need for human intervention for up to a week, automatically switching between reservoirs after the end of each half-cycle and avoiding cross-contamination between the sodium chloride solution and the salinate. INITIAL DESIGNS/STAKEHOLDER ANALYSIS We are working with Professor Kwabi of the Kwabi Lab, which focuses on flow battery and carbon capture research. We will be primarily working with Ph.D. Candidates Siddhant Singh and Sanat Modak. Siddhant’s work novel because it is hybrid flow cell and uses a single nasicon