Department of Civil Engineering, Queen's University, Kingston, ON, Canada K7L 3N6.
Bioresour Technol. 2011 Sep;102(17):8279-87. doi: 10.1016/j.biortech.2011.06.051. Epub 2011 Jul 7.
Supercritical water gasification (SCWG) of glucose solution (50-200 g/L), a simulated aqueous organic waste (composed of glucose, acetic acid and guaiacol) and a real aqueous organic waste stream generated from a sludge hydrothermal liquefaction process was performed in a bench-scale continuous down-flow tubular reactor with novel 0.1 RuNi/γ-Al(2)O(3) or 0.1 RuNi/activated carbon (AC) catalyst (10 wt.% Ni with a Ru-to-Ni molar ratio of 0.1). 0.1 RuNi/γ-Al(2)O(3) was very effective in catalyzing SCWG of glucose solution and the simulated aqueous organic waste, attaining an H(2) yield of 53.9 mol/kg dried feedstock at 750°C, 24 MPa and a WHSV of 6h(-1). However, the γ-Al(2)O(3)-supported catalyst was not resistant to the attack of alkali and nitrogen compounds in the real waste during the SCWG of the real aqueous organic waste, whereas the AC-based catalyst exhibited higher stability. This research provides a promising approach to the treatment and valorization of aqueous organic waste via SCWG.
采用新型 0.1 RuNi/γ-Al(2)O(3) 或 0.1 RuNi/活性炭 (AC) 催化剂（10wt.%Ni，Ru 与 Ni 的摩尔比为 0.1），在中试规模连续下降管式反应器中对葡萄糖溶液（50-200g/L）、模拟水相有机废物（由葡萄糖、乙酸和愈创木酚组成）和污泥热解液化过程产生的实际水相有机废物流进行了超临界水气化（SCWG）处理。0.1 RuNi/γ-Al(2)O(3) 对葡萄糖溶液和模拟水相有机废物的 SCWG 非常有效，在 750°C、24MPa 和 WHSV 为 6h(-1)的条件下，H(2)产率达到 53.9mol/kg 干原料。然而，在实际水相有机废物的 SCWG 过程中，γ-Al(2)O(3)负载的催化剂不能抵抗实际废水中的碱和氮化合物的攻击，而基于 AC 的催化剂则表现出更高的稳定性。这项研究为通过 SCWG 处理和增值利用水相有机废物提供了一种有前途的方法。
