Microwave pyrolysis of olive pomace for bio-oil and bio-char production
Microwave pyrolysis of olive pomace for bio-oil and bio-char production
复制标题
DOI：
10.1016/j.cej.2019.123404
复制
发表时间：
2020-05-01
影响因子：
15.1
通讯作者：
Robinson, John P.
中科院分区：
文献类型：
--
作者：
Kostas, Emily T.;Duran-Jimenez, Gabriela;Robinson, John P.
橄榄渣是一种在欧洲广泛存在的农用工业废渣，有可能为循环、低碳生物经济做出贡献。本研究首次证明了利用微波热解橄榄渣生产生物炭和生物油的能力。结果表明，热解橄榄渣80%所需的能量低至3.6kJ/g，生物油得率可达30%。微波功率不影响所得生物油的总收率或化学组成，但确实改变了生成的生物炭的质构特性和去除亚甲基蓝染料的能力。最佳工艺条件为：微波功率为200W，处理时间为180秒，能量要求为3.6kJ/g。在此条件下制得的生物油馏分以醋酸为主(71.9%)，生物炭的比表面积为392.3 m(2)/g，微孔体积为0.15 cm(3)/g，亚甲基蓝的脱除效率为40qMB mg/g。本研究结果表明了微波加热在热解系统中的优越性，为橄榄渣等天然废弃物的附加值回收开辟了一条新的、有前景的途径。
Olive pomace is a widely available agro-industrial waste residue in Europe that has the potential to contribute towards a circular, low carbon bio-economy. This study demonstrated, for the first time, the ability to successfully pyrolyse olive pomace with microwaves for the production of bio-char and bio-oil. It was found that the energy requirement needed to pyrolyse up to 80% of the olive pomace was as low as 3.6 kJ/g and bio-oil yields up to 30% were produced. Microwave power did not influence the overall yields or the chemical composition of the obtained bio-oils, but did alter the textural properties of the generated bio-chars and their ability to remove methylene blue dye. Optimum processing conditions were found to be within the 3.6 kJ/g energy requirement with a microwave power of 200 W and processing time of 180 sec. These conditions produced a bio-oil fraction containing mainly acetic acid (71.9%) and a bio-char with a surface area of 392.3 m(2)/g, micropore volume of 0.15 cm(3)/g and a methylene blue removal efficiency of 40 qMB mg/g. The results acquired from this study reveal the superiority of microwave heating in a pyrolysis system and highlight a novel and prospective route for added value recovery from natural waste resources like olive pomace.