Biomass and Bioenergy Laboratory, School of Mechanical Engineering, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia.
Bioresour Technol. 2013 Jun;138:124-30. doi: 10.1016/j.biortech.2013.03.179. Epub 2013 Apr 4.
In this investigation, palm empty fruit bunch (EFB) and almond shell (AS) were implemented as two natural catalysts rich in alkali metals, especially potassium, to enhance the reactivity of tire-char through co-gasification process. Co-gasification experiments were conducted at several blending ratios using isothermal Thermogravimetric analysis (TGA) under CO2. The pronounced effect of inherent alkali content of biomass-chars on promoting the reactivity of tire-char was proven when acid-treated biomass-chars did not exert any catalytic effect on improving the reactivity of tire-char in co-gasification experiments. In kinetic studies of the co-gasified samples in chemically-controlled regime, modified random pore model (M-RPM) was adopted to describe the reactive behavior of the tire-char/biomass-char blends. By virtue of the catalytic effect of biomass, the activation energy for tire-char gasification was lowered from 250 kJ/mol in pure form 203 to 187 kJ/mol for AS-char and EFB-char co-gasified samples, respectively.
在这项研究中，棕榈空果串（EFB）和杏仁壳（AS）被用作两种富含碱金属（尤其是钾）的天然催化剂，通过共气化过程来提高轮胎炭的反应性。在 CO2 下使用等温热重分析（TGA），以不同的混合比例进行了共气化实验。当酸处理的生物质炭在共气化实验中对提高轮胎炭的反应性没有任何催化作用时，生物质炭中固有的碱含量对促进轮胎炭反应性的显著影响得到了证明。在化学控制条件下共气化样品的动力学研究中，采用改进的随机孔模型（M-RPM）来描述轮胎炭/生物质炭混合物的反应行为。由于生物质的催化作用，轮胎炭气化的活化能从纯轮胎炭的 250 kJ/mol 分别降低到 AS-炭和 EFB-炭共气化样品的 203 到 187 kJ/mol。
