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Gas-Assisted Endless Belt Adsorption for Continuous Countercurrent Separation of Target Components from Suspension
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-06-04 , DOI: 10.1021/acs.iecr.1c01630 Wensong Li 1 , Chenqi Pi 1 , Ling Huang 1 , Zhengke Li 1 , Weiyan Wang 1 , Yunquan Yang 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-06-04 , DOI: 10.1021/acs.iecr.1c01630 Wensong Li 1 , Chenqi Pi 1 , Ling Huang 1 , Zhengke Li 1 , Weiyan Wang 1 , Yunquan Yang 1
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In this study, a novel gas-assisted endless belt adsorption (GAEBA) technology was developed for the continuous countercurrent separation of target components from suspension. In this technology, a bubbling process was employed to assist the mass transfer of the countercurrent endless belt adsorption, and a washing step was added to prevent the internal recirculation of the desorption liquid. GAEBA was demonstrated for the direct recoverable removal of Congo red (CR) from a wastewater suspension. The mass transfer rate in the belt adsorption was significantly improved by the bubbling process even without surfactants. Greater enhancements could be obtained by increasing the gas flow rate and the ionic strength in the bubble column solution. GAEBA is a pseudo-second-order process. A continuous GAEBA with a 6 cm countercurrent adsorption zone was demonstrated for the efficient recyclable removal of CR (30 mg/L) from a simulated wastewater suspension with the slurry concentration in the range of 50 to 300 mg/L and reached a CR removal rate from 91% to 71.7%. The endless adsorbent belt had good reusability with 86.4% of continuous removal rate in GAEBA after 140 cycles.
中文翻译：
用于从悬浮液中连续逆流分离目标成分的气体辅助环形带吸附
在这项研究中，开发了一种新型气体辅助环形带吸附 (GAEBA) 技术，用于从悬浮液中连续逆流分离目标组分。该技术采用鼓泡工艺辅助逆流环带吸附传质，并增加洗涤步骤，防止解吸液内部回流。GAEBA 已被证明可直接从废水悬浮液中去除刚果红 (CR)。即使没有表面活性剂，鼓泡过程也显着提高了带吸附中的传质速率。通过增加气泡塔溶液中的气体流速和离子强度可以获得更大的增强。GAEBA 是一个伪二阶过程。具有 6 cm 逆流吸附区的连续 GAEBA 被证明可以有效地从模拟废水悬浮液中去除 CR (30 mg/L)，其中浆料浓度在 50 至 300 mg/L 范围内，并达到了 CR 去除率从 91% 到 71.7%。环形吸附带具有良好的重复使用性，140次循环后GAEBA连续去除率为86.4%。
更新日期：2021-06-17
中文翻译：
用于从悬浮液中连续逆流分离目标成分的气体辅助环形带吸附
在这项研究中，开发了一种新型气体辅助环形带吸附 (GAEBA) 技术，用于从悬浮液中连续逆流分离目标组分。该技术采用鼓泡工艺辅助逆流环带吸附传质，并增加洗涤步骤，防止解吸液内部回流。GAEBA 已被证明可直接从废水悬浮液中去除刚果红 (CR)。即使没有表面活性剂，鼓泡过程也显着提高了带吸附中的传质速率。通过增加气泡塔溶液中的气体流速和离子强度可以获得更大的增强。GAEBA 是一个伪二阶过程。具有 6 cm 逆流吸附区的连续 GAEBA 被证明可以有效地从模拟废水悬浮液中去除 CR (30 mg/L)，其中浆料浓度在 50 至 300 mg/L 范围内，并达到了 CR 去除率从 91% 到 71.7%。环形吸附带具有良好的重复使用性，140次循环后GAEBA连续去除率为86.4%。
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