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首页> 外文会议>EPD congress;TMS annual meeting exhibition >REMOVAL OF HEAVY METALS AND UPGRADING CRUDE BIO-OIL FROM PTERIS VITTATA STEMS AND LEAVES HARVEST USING HYDROTHERMAL UPGRADING PROCESS
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REMOVAL OF HEAVY METALS AND UPGRADING CRUDE BIO-OIL FROM PTERIS VITTATA STEMS AND LEAVES HARVEST USING HYDROTHERMAL UPGRADING PROCESS

机译：利用水热升华工艺去除百日草茎叶和叶子中的重金属和生物质原油

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摘要

Hyperaccumulator biomass harvested after heavy-metal phytoremediation must be considered as hazardous waste that should be contained or treated appropriately before disposal or reuse. As a potential method to detoxify the biomass and to convert this material to a suitable bio-energy resource, the hydrothermal upgrading process was applied to remove heavy metals and upgrading crude bio-oil from Pteris vittata stems and leaves harvest. Parameters such as material granularity, temperature, Liquid/Solid (L/S, ml/g), pressure, duration and catalysts were examined for their effect on the removal efficiency of heavy metals and upgrading efficiency of crude bio-oil. Maximum heavy metal removal efficiency of ＞99% and crude bio-oil upgrading efficiency of 83% were attained with an 200 mesh (75 μm) granularity, L/S 40:1 and 23 MPa at 380°C in the presence of 0.1 mol L~(-1) K_2CO_3 for 30 min. GC-MS analysis results show that the resulting bio-oil mainly consists of benzene 11%, ketone 42%, alcohols 14%, alkene 15% and ester 11%, etc., and the relative molecular weight distribution lies in 94～282, carbon number distribution lies in 6～18, calorific value is 32 MJ kg~(-1).
机译：重金属植物修复后收获的高蓄积生物质必须被视为危险废物，应在处置或再利用之前对其进行适当地容纳或处理。作为一种潜在的解毒生物质并将其转化为合适的生物能源的方法，采用水热提质工艺去除重金属和提纯紫檀茎和叶收获物中的粗生物油。检查了诸如物料粒度，温度，液体/固体（L / S，ml / g），压力，持续时间和催化剂等参数对重金属去除效率和粗生物油提质效率的影响。 200粒度（75μm），L / S 40：1和23 MPa在380°C且存在0.1 mol的颗粒时，最大重金属去除效率> 99％，粗生物油提质效率达到83％。 L〜（-1）K_2CO_3 30分钟。 GC-MS分析结果表明，所得生物油主要由苯11％，酮42％，醇14％，烯烃15％和酯11％等组成，相对分子量分布在94〜282之间，碳数分布在6〜18之间，发热量为32 MJ kg〜（-1）。

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