Department of Energy Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
School of Chemistry, College of Science, University of Tehran, Tehran, Iran.
Bioresour Technol. 2016 Dec;222:232-241. doi: 10.1016/j.biortech.2016.09.082. Epub 2016 Sep 26.
A tubular batch micro-reactor system was used for hydrothermal gasification (HTG) of Cladophora glomerata (C. glomerata) as green macroalgae found in the southern coast of the Caspian Sea, Iran. Non-catalytic tests were performed to determine the optimum condition for hydrogen production. Hydrochar, as a solid residue of non-catalytic HTG was characterized by BET, FESEM, and ICP-OES methods to determine its physiochemical properties. Surface area and pore volume of C. glomerata increased drastically after HTG. Also, the aqueous products were identified and quantified by GC-MS and GC-FID methods. Hydrochar was loaded to the reactor to determine its catalytic effect on HTG. HTG was promoted by inorganic compounds in the hydrochar and its porosity. The maximum hydrogen yield of 9.63mmol/g was observed in the presence of algal hydrochar with the weight ratio of 0.4 to feedstock. Also, acids production was inhibited while phenol production was promoted in the presence of hydrochar.
采用管状批量微反应器系统对在伊朗里海南部沿海发现的绿色大型藻类石莼（Cladophora glomerata）进行水热气化（HTG）。进行了非催化试验以确定制氢的最佳条件。非催化 HTG 的固体残渣水焦作为一种固体残渣，通过 BET、FESEM 和 ICP-OES 方法进行了表征，以确定其物理化学性质。石莼的比表面积和孔体积在 HTG 后急剧增加。此外，通过 GC-MS 和 GC-FID 方法对水相产物进行了鉴定和定量分析。将水焦装入反应器以确定其对 HTG 的催化作用。水焦中的无机化合物及其孔隙率促进了 HTG。在添加藻类水焦并将其与原料的重量比为 0.4 的情况下，观察到最大的氢气产率为 9.63mmol/g。此外，在水焦存在的情况下，抑制了酸的生成，同时促进了酚的生成。
