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Application of Gas Hydrate for the Treatment of Vinasse: Phase Equilibrium and Kinetic Investigations
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-12-03 , DOI: 10.1021/acs.jced.0c00761 Tauheeda Fakir 1 , Saeideh Babaee 1 , Paramespri Naidoo 1
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-12-03 , DOI: 10.1021/acs.jced.0c00761 Tauheeda Fakir 1 , Saeideh Babaee 1 , Paramespri Naidoo 1
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One of the major challenges faced by society is dealing with its waste which must be disposed under sustainable waste management regulations. It is, therefore, necessary to find economical avenues for treating and reuse of waste streams such as vinasse. The application of novel technology such as gas hydrate can make the waste treatment process less energy-intensive. Reliable gas hydrate phase equilibrium and kinetic data for CO2 hydrates in the presence of a synthesized vinasse solution were measured using a hydrate benchtop rig. The van der Waals and Plateeuw (vdW–P) solid solution theory, with the UNIQUAC model along with the Debye–Hückel term, was used for the prediction of the hydrate dissociation conditions. The kinetic experiments were performed at initial pressures of 2.60, 2.90, and 3.20 MPa; initial temperatures of 273.1, 274.1, and 275.6 K, and stirrer speeds of 87, 109, and 130 rpm. Results demonstrated that as the initial pressure was increased at a constant temperature, the induction time decreased. In addition, the CO2 hydrate formation rate, apparent rate constant, storage capacity, and water-to-hydrate conversion increased. Similar trends were observed when the initial temperatures were decreased. Lower stirrer speeds result in longer induction times and rate of formation.
中文翻译：
天然气水合物在酒糟处理中的应用：相平衡和动力学研究
社会面临的主要挑战之一是必须根据可持续废物管理法规处理其废物。因此，有必要寻找经济途径来处理和再利用诸如酒糟之类的废物流。气体水合物等新技术的应用可使废物处理过程的能源消耗降低。CO 2的可靠水合物相平衡和动力学数据使用水合物台式钻机测量合成酒糟溶液存在下的水合物。范德华与普拉德乌（vdW–P）固溶理论与UNIQUAC模型以及Debye–Hückel项一起用于预测水合物的解离条件。动力学实验是在2.60、2.90和3.20 MPa的初始压力下进行的。初始温度为273.1、274.1和275.6 K，搅拌器速度为87、109和130 rpm。结果表明，随着恒定温度下初始压力的增加，诱导时间减少。另外，CO 2水合物形成速率，表观速率常数，储存容量和水-水合物转化率增加。当初始温度降低时，观察到类似的趋势。较低的搅拌器速度会导致更长的诱导时间和形成速率。
更新日期：2021-01-14
中文翻译：
天然气水合物在酒糟处理中的应用：相平衡和动力学研究
社会面临的主要挑战之一是必须根据可持续废物管理法规处理其废物。因此，有必要寻找经济途径来处理和再利用诸如酒糟之类的废物流。气体水合物等新技术的应用可使废物处理过程的能源消耗降低。CO 2的可靠水合物相平衡和动力学数据使用水合物台式钻机测量合成酒糟溶液存在下的水合物。范德华与普拉德乌（vdW–P）固溶理论与UNIQUAC模型以及Debye–Hückel项一起用于预测水合物的解离条件。动力学实验是在2.60、2.90和3.20 MPa的初始压力下进行的。初始温度为273.1、274.1和275.6 K，搅拌器速度为87、109和130 rpm。结果表明，随着恒定温度下初始压力的增加，诱导时间减少。另外，CO 2水合物形成速率，表观速率常数，储存容量和水-水合物转化率增加。当初始温度降低时，观察到类似的趋势。较低的搅拌器速度会导致更长的诱导时间和形成速率。
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