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Exploring the potential of MXene-based advanced solar-absorber in improving the performance and efficiency of a solar-desalination unit for brackish water purification
Desalination ( IF 9.9 ) Pub Date : 2022-01-04 , DOI: 10.1016/j.desal.2021.115521
Amrit Kumar Thakur 1 , Ravishankar Sathyamurthy 1 , R. Saidur 2, 3 , R. Velraj 4 , Iseult Lynch 5 , Navid Aslfattahi 6
Affiliation  

Brackish water desalination using solar still (SS) is a low-cost sustainable solution to global water scarcity, but this technology suffers from low yield and efficiency. The judicious amalgamation of highly conductive materials with superior solar absorption behavior is one of the most effective approaches to overcome this limitation. In this regard, the present work synthesizes a novel multilayered 2-D MXene from 3-D MAX phase as a coating material for the solar absorber of a SS to improve its performance. Two different loadings of MXene (0.05 and 0.1 wt%) were dispersed in turpentine oil/black paint (1:4) and coated onto the solar absorber of the SS. Higher MXene loading significantly augmented the thermal conductivity and solar absorptivity of the turpentine oil/black paint solution. The 0.1 wt% MXene coated absorber provided a higher heat transfer rate from the absorber to the water, leading to a 6% increase in water temperature and a total water yield of 2.07 kg. The theoretical calculated water yield was identical to the experimental yield with a deviation of ±5%, demonstrating the accuracy of thermal modelling. The average energy efficiency of the SS with 0.1 wt% MXene in the absorber black paint coating was 36.31%. Water quality analysis has shown that the distilled water resulting from the desalination is suitable for drinking. In conclusion, MXene with its excellent thermo-physical properties and solar absorptivity will be beneficial in development of efficient solar desalination units with augmented performance for water purification.



中文翻译:

探索基于 MXene 的先进太阳能吸收器在提高用于苦咸水净化的太阳能海水淡化装置的性能和效率方面的潜力

使用太阳能蒸馏器 (SS) 进行苦咸水淡化是解决全球水资源短缺的低成本可持续解决方案,但该技术的产量和效率较低。将具有优异太阳能吸收性能的高导电材料明智地合并是克服这一限制的最有效方法之一。在这方面,本工作从 3-D MAX 相合成了一种新型多层 2-D MXene 作为 SS 太阳能吸收器的涂层材料,以提高其性能。将两种不同负载量的 MXene(0.05 和 0.1 wt%)分散在松节油/黑色涂料(1:4)中,并涂在 SS 的太阳能吸收器上。较高的 MXene 负载量显着提高了松节油/黑色涂料溶液的热导率和太阳能吸收率。0。1 wt% MXene 涂层吸收器提供了更高的从吸收器到水的传热率,导致水温升高 6%,总产水量为 2.07 kg。理论计算的产水量与实验产水量相同,偏差为 ±5%,证明了热建模的准确性。在吸收剂黑色油漆涂层中含有 0.1 wt% MXene 的 SS 的平均能量效率为 36.31%。水质分析表明,脱盐产生的蒸馏水适合饮用。总之,MXene 具有优异的热物理性能和太阳能吸收率,将有利于开发具有增强水净化性能的高效太阳能海水淡化装置。导致水温升高 6%,总产水量为 2.07 kg。理论计算的产水量与实验产水量相同,偏差为 ±5%,证明了热建模的准确性。在吸收剂黑色油漆涂层中含有 0.1 wt% MXene 的 SS 的平均能量效率为 36.31%。水质分析表明,脱盐产生的蒸馏水适合饮用。总之,MXene 具有优异的热物理性能和太阳能吸收率,将有利于开发具有增强水净化性能的高效太阳能海水淡化装置。导致水温升高 6%,总产水量为 2.07 kg。理论计算的产水量与实验产水量相同,偏差为 ±5%,证明了热建模的准确性。在吸收剂黑色油漆涂层中含有 0.1 wt% MXene 的 SS 的平均能量效率为 36.31%。水质分析表明,脱盐产生的蒸馏水适合饮用。总之,MXene 具有优异的热物理性能和太阳能吸收率,将有利于开发具有增强水净化性能的高效太阳能海水淡化装置。在吸收剂黑色油漆涂层中含有 0.1 wt% MXene 的 SS 的平均能量效率为 36.31%。水质分析表明,脱盐产生的蒸馏水适合饮用。总之,MXene 具有优异的热物理性能和太阳能吸收率,将有利于开发具有增强水净化性能的高效太阳能海水淡化装置。在吸收剂黑色油漆涂层中含有 0.1 wt% MXene 的 SS 的平均能量效率为 36.31%。水质分析表明,脱盐产生的蒸馏水适合饮用。总之,MXene 具有优异的热物理性能和太阳能吸收率,将有利于开发具有增强水净化性能的高效太阳能海水淡化装置。

更新日期:2022-01-04
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