STAR∗AgroEnergy Research Group, University of Foggia, Foggia, Italy; National Research Council, Institute of Marine Science, Lesina, Italy.
Biomass Group, Dept of Chemical Engineering, Aristotle University of Thessaloniki, Greece.
Bioresour Technol. 2015 May;184:305-313. doi: 10.1016/j.biortech.2014.10.147. Epub 2014 Nov 5.
Phycobiliproteins extraction (primary refining) from Gracilaria gracilis seaweed, harvested in Lesina Lagoon (Italy) and further valorization of the residual algal via pyrolysis (secondary refining), were investigated with a cascade biorefinery approach. R-phycoerythrin (7 mg/g d.w.), allophycocyanin (3.5 mg/g d.w.) and phycocyanin (2 mg/g d.w.) were the main phycobiliproteins extracted. Pyrolysis of G.gracilis residue followed, aiming to investigate the production of bio-oil and biochar within a pyrolysis temperature range of 400-600 °C. Results showed that the bio-oil yield is high (∼65 wt%) at pyrolysis temperature ∼500 °C, but its high content in nitrogenous compounds prevents its use as a biofuel, unless some further de-nitrogenation takes place. Biochar yield ranged between 33 wt% (400 °C) and 26.5 wt% (600 °C). Interestingly, inorganic nutrients including P, K, Ca, Fe and Mg were detected in biochar, suggesting its potential use as recovering system of natural mineral resources from the oceanic reservoir.
采用级联生物炼制方法研究了从小笠原群岛（意大利）收获的江蓠藻中提取藻蓝蛋白（初级精炼），并进一步通过热解（二级精炼）对剩余藻类进行增值利用。从江蓠藻中提取了主要的藻蓝蛋白，包括藻红蛋白（7mg/g d.w.）、别藻蓝蛋白（3.5mg/g d.w.）和藻蓝蛋白（2mg/g d.w.）。随后对江蓠藻残渣进行热解，旨在研究在 400-600°C 的热解温度范围内生产生物油和生物炭的情况。结果表明，在热解温度约为 500°C 时，生物油的产率较高（约为 65wt%），但其氮含量较高，除非进一步脱氮，否则不能将其用作生物燃料。生物炭的产率在 33wt%（400°C）至 26.5wt%（600°C）之间。有趣的是，在生物炭中检测到包括 P、K、Ca、Fe 和 Mg 在内的无机营养物质，表明其可能作为从海洋水库中回收天然矿物质资源的系统。
