Proper Adhesive Choice Increases Photothermal Float Durability in Mine Water Disposal Applications
Proper Adhesive Choice Increases Photothermal Float Durability in Mine Water Disposal Applications
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DOI：
10.1007/s10230-020-00730-6
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发表时间：
2020-10
影响因子：
2.8
通讯作者：
Ross Monasmith;K. Zodrow
中科院分区：
文献类型：
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作者：
Ross Monasmith;K. Zodrow
使用光热材料来增强蒸发水处理可能受到材料耐久性、结垢形成以及光热材料与可变水化学之间的相互作用的限制。在前人研究的基础上，选择颗粒活性炭（GAC）作为光热材料。使用定制的、模拟太阳光谱和强度的实验室规模的蒸发平台，进行蒸发试验以确定水质、GAC粒度和浮子粘合剂对水蒸发速率的影响。粘合剂将GAC连接到HDPE浮子进行了测试的粘结强度和耐久性，并通过接触角，保水性和表面积分析测量粘合剂对GAC的蒸发性能的影响。虽然不同的粘合剂在耐久性方面存在很大差异，但在蒸发试验中，颗粒大小、粘合剂或水质之间没有发现显著差异（p > 0.05）。通过SEM和EDS观察并表征了三种测试沃茨的结垢;然而，结垢并未导致浮子的蒸发性能发生任何显著变化。因此，一致的蒸发速率在实验室规模的蒸发室中测量的GAC颗粒大小，粘合剂类型，和水质无关，表明在光热水处理的GAC的潜在的通用性。
The use of photothermal materials to enhance evaporative water disposal can be limited by material durability, scale formation, and interactions between the photothermal materials and variable water chemistries. Granular activated carbon (GAC) was chosen as a photothermal material based on previous research. Using a custom-built, bench-scale evaporation platform that mimics the solar spectrum and intensity, evaporation trials were performed to determine the effect of water quality, GAC grain size, and float adhesives on water evaporation rates. Adhesives to attach the GAC to HDPE floats were tested for bond strength and durability, and the adhesive’s effects on GAC’s evaporative properties were measured by contact angle, water retention, and surface area analyses. While large differences in durability were observed with the different adhesives, no significant differences were discovered between grain sizes, adhesives, or water quality in the evaporation tests (p > 0.05). Scale formation from three test waters was observed and characterized by SEM and EDS; however, scale did not lead to any significant changes in evaporative performance of the floats. Thus, consistent evaporation rates measured in the bench scale evaporation chamber regardless of GAC grain size, adhesive type, and water quality, indicate the potential versatility of GAC in photothermal water disposal.