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Experimental adsorption water desalination system utilizing activated clay for low grade heat source applications
Journal of Energy Storage ( IF 9.4 ) Pub Date : 2021-09-16 , DOI: 10.1016/j.est.2021.103219
Ehab S. Ali 1 , Ahmed A. Askalany 2 , K. Harby 3, 4 , Mohamed Refaat Diab 3 , Bahgat R.M. Hussein 5 , Ahmed S. Alsaman 2
Affiliation  

In the present study, benefits of utilizing acid activated montmorillonite as a proposed new adsorbent material in adsorption desalination-cooling systems- have been experimentally expressed. Montmorillonite is a natural clay mineral which is composed mainly of alumina-silicate. Effect of acid activation on montmorillonite has been illustrated using infra-red spectra analysis. Adsorption characteristics (isotherm and kinetic) of acid activated montmorillonite (with 2 mole of hydrochloric acid/water vapor pair have been expressed. Isotherms results have been fitted with Dubinin-Astakhov and Sun-Chakraborty models. An experimental adsorption desalination-cooling test rig has been erected to explore the adsorption desalination-cooling systems performance with montmorillonite /water pair and axial finned tube adsorption bed design. The experimental results indicates that the daily water production is about 4.4 m3/ton of montmorillonite, its specific cooling power is 110 W/kg and the coefficient of performance is 0.41 at a driving temperature less than 100 °C. Solar energy can drive adequately the investigated system. The experiment also illustrates that the ADCS is very significant in removing all forms of salts, as proven by the weighty drop of the total dissolved salt, TDS (measured by TDS analyzer), level from approximately 40,000 ppm in seawater intake to less than 30 ppm.



中文翻译:

利用活性粘土进行低品位热源应用的实验吸附水淡化系统

在本研究中,已经通过实验表达了在吸附脱盐冷却系统中利用酸活化蒙脱石作为拟议的新型吸附剂材料的好处。蒙脱石是一种天然粘土矿物,主要由铝硅酸盐组成。酸活化对蒙脱石的影响已使用红外光谱分析进行了说明。酸活化蒙脱石(含 2 摩尔盐酸/水蒸气对)的吸附特性(等温线和动力学)已表示。等温线结果已与 Dubinin-Astakhov 和 Sun-Chakraborty 模型拟合。实验吸附脱盐冷却试验台已建立以探索吸附脱盐冷却系统性能与蒙脱石/水对和轴向翅片管吸附床设计。3 /吨蒙脱石,其比冷却功率为110 W/kg,在低于100℃的行驶温度下性能系数为0.41。太阳能可以充分驱动所研究的系统。该实验还表明,ADCS 在去除所有形式的盐方面非常重要,正如总溶解盐、TDS(由 TDS 分析仪测量)从海水摄入中的约 40,000 ppm 降至低于 30 ppm 的严重下降所证明的.

更新日期:2021-09-17
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