Effect of an Anaerobic Fermentation Process on 3D-Printed PLA Materials of a Biogas-Generating Reactor.
Effect of an Anaerobic Fermentation Process on 3D-Printed PLA Materials of a Biogas-Generating Reactor.
复制标题
DOI：
10.3390/ma15238571
复制
发表时间：
2022-12-01
期刊：
影响因子：
--
通讯作者：
中科院分区：
文献类型：
--
作者：
3D打印材料存在于从医学到工程的众多应用中。本研究的目的是评估它们对当今感兴趣的应用的适用性，即测试基于3D打印聚乳酸（PLA）的反应器，用于使用厌氧消化生产沼气。研究了温度、pH和水相对测试的生物反应器的影响，以及气相的影响（即，产生的沼气）。在现实情况下，考虑了在生物反应器内一个接一个地单独使用的两批材料。反应器内部的两个基本参数（即，pH和温度）在25至30天的时间间隔内连续监测两个产酶过程中的每一个。为了了解这些过程对生物反应器壁的影响，将3D打印材料的样品放置在三个水平：顶部（即，基质外部）、生物反应器的中部和底部。使用非破坏性成像方法光学相干断层扫描（OCT）分析样本。利用内部开发的扫频源（SS）OCT系统，主从（MS）增强，在1310 nm的中心波长下工作。使用扫描电子显微镜（SEM）确认与PLA样品材料降解水平相关的3D OCT图像。使用OCT B-扫描（光学截面图像）确定并分析了反应器内三个考虑水平处的样品上的基材影响之间的差异。因此，证明并量化了生物反应器内部的产酶过程的影响，以及OCT进行此类评估的能力。因此，未来的工作可能会针对光学相干断层扫描原位调查这样的生物反应器。
3D-printed materials are present in numerous applications, from medicine to engineering. The aim of this study is to assess their suitability for an application of interest today, that of testing of 3D-printed polylactic acid (PLA)-based reactors for biogas production using anaerobic digestion. The impact of temperature, pH, and aqueous phase on the tested bioreactor is investigated, together with the effect of the gaseous phase (i.e., produced biogas). Two batches of materials used separately, one after another inside the bioreactor were considered, in a realistic situation. Two essential parameters inside the reactor (i.e., pH and temperature) were continuously monitored during a time interval of 25 to 30 days for each of the two biogas-generating processes. To understand the impact of these processes on the walls of the bioreactor, samples of 3D-printed material were placed at three levels: at the top (i.e., outside the substrate), in the middle, and at the bottom of the bioreactor. The samples were analyzed using a non-destructive imaging method, Optical Coherence Tomography (OCT). An in-house developed swept-source (SS) OCT system, master–slave (MS) enhanced, operating at a central wavelength of 1310 nm was utilized. The 3D OCT images related to the degradation level of the material of the PLA samples were validated using Scanning Electron Microscopy (SEM). The differences between the impact of the substrate on samples situated at the three considered levels inside the reactor were determined and analyzed using their OCT B-scans (optical cross-section images). Thus, the impact of the biogas-generating process on the interior of the bioreactor was demonstrated and quantified, as well as the capability of OCT to perform such assessments. Therefore, future work may target OCT for in situ investigations of such bioreactors.
登录
查看更多内容
影响因子：
5.5
作者：
Den W;Sharma VK;Lee M;Nadadur G;Varma RS
通讯作者：
Varma RS
影响因子：
3.9
作者：
Aguilar-Aguilar, F. A.;Longoria, Adriana;Sebastian, P. J.
通讯作者：
Sebastian, P. J.
影响因子：
3.5
作者：
Drexler, Wolfgang;Liu, Mengyang;Leitgeb, Rainer A.
通讯作者：
Leitgeb, Rainer A.
影响因子：
3.1
作者：
Bajpai, Pramendra Kumar;Singh, Inderdeep;Madaan, Jitendra
通讯作者：
Madaan, Jitendra
影响因子：
3.8
作者：
Cogliati, Andrea;Canavesi, Cristina;Rolland, Jannick P.
通讯作者：
Rolland, Jannick P.