Exploration of a novel biorefinery based on sequential hydropyrolysis and anaerobic digestion of algal biofilm: a comprehensive characterization of products for energy and chemical production,Sustainable Energy & Fuels

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Exploration of a novel biorefinery based on sequential hydropyrolysis and anaerobic digestion of algal biofilm: a comprehensive characterization of products for energy and chemical production
Sustainable Energy & Fuels ( IF 5.0 ) Pub Date : 2020/01/03 , DOI: 10.1039/c9se00939f
Poonam Choudhary _{1,

2,

3,

4,

5} , Anushree Malik _{1,

2,

3,

4,

5} , Kamal K. Pant _{3,

5,

6,

7}

Affiliation

This study presents an extensive and detailed characterization of products from hydropyrolysis and anaerobic digestion and proposes a multi-pathway assessment of algal biomass conversion. An algal biorefinery based on sequential hydropyrolysis (HyPy) and anaerobic digestion (AD) of algal biofilm has been comprehensively studied for the first time. Wet and untreated biomass from algal biofilm was directly employed as feedstock for the HyPy–AD coupled process and the products obtained were characterized by GC-MS, LC-MS, HPLC, CHNS, SEM and TEM. Based on different morphological and structural characterizations, different biorefinery routes were assessed in terms of net energy recovery and ecological impact. Upto 42% biocrude yield and 200 mL g_VS⁻¹ biomethane yield with a net energy ratio (NER) of 1.5 were observed for the coupled process of HyPy and AD, giving it a cutting edge over other conversion routes. A biorefinery based on these results has been presented considering a sustainable approach to valorize whole algal biomass towards multiple product recovery.

中文翻译：

探索一种基于顺序水解和藻类生物膜厌氧消化的新型生物精炼厂：能源和化学生产产品的全面表征

这项研究提出了从热解和厌氧消化产物的广泛和详细的表征，并提出了藻类生物质转化的多途径评估。首次对基于顺序热解法（HyPy）和厌氧消化（AD）的藻类生物膜的藻类生物精炼厂进行了全面研究。来自藻类生物膜的湿的和未经处理的生物质直接用作HyPy-AD偶联过程的原料，所得产物通过GC-MS，LC-MS，HPLC，CHNS，SEM和TEM进行表征。根据不同的形态和结构特征，从净能量回收和生态影响方面评估了不同的生物精炼路线。最高42％的生物粗品收率和200 mL g _VS^-1在HyPy和AD的耦合过程中，观察到净甲烷能量比（NER）为1.5的生物甲烷产率，这使其比其他转化途径更具优势。已经提出了基于这些结果的生物精炼厂，其中考虑了一种可持续的方法来使整个藻类生物质增值，以实现多种产品的回收。

更新日期：2020-03-03

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