Catalytic conversion of Venice lagoon brown marine algae for producing hydrogen-rich gas and valuable biochemical using algal biochar and Ni/SBA-15 nano catalyst

سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 370

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شناسه ملی سند علمی:

IICC21_004

تاریخ نمایه سازی: 5 آذر 1398

چکیده مقاله:

Global warming and the widespread use of fossil fuels, such as petroleum, coal and natural gas, cause several environmental impacts which inspired many researchers to find alternative energy resources and more efficient technologies [1]. The energy derived from biomass in the form of bio-oil, biogas, and biochar has attracted great attention because of its obvious advantages such as being renewable, emitting relatively low carbon dioxide, and having a negligible amount of sulfur [2-4]. This study reports the conversion of Sargassum as a Venice lagoon brown macroalgae into gaseous, liquid and solid products via pyrolysis at different temperatures to determine its potential for bio-oil and hydrogen-rich gas production for further industrial utilization. Non-catalytic tests were performed to determine the optimum condition for bio-oil production. The highest portion of bio-oil was retrieved at 700 ℃. The catalytic test was performed using the algal biochar and Ni/SBA-15 at 700 ℃ as catalysts. Biochar catalyst exhibited excellent catalytic activity toward producing aromatic compounds via Diels-Alder-type reactions. However, Ni/SBA-15, because of interconnected pores provided easy passage for reactant and product during the catalytic pyrolysis process and resulted in an improvement in total gas yield and hydrogen-rich gas production. High specific surface area, large pore volume, highly ordered pore structure, and narrow pore size distribution make SBA-15 a promising catalyst support in pyrolysis of biomass.

نویسندگان

Somayeh Taghavi

CATMAT Lab, Department of Molecular Sciences and Nanosystems, Ca Foscari University Venice and INSTM Consortium, RU of Venice, Via Torino ۱۵۵, ۳۰۱۷۲ Venezia Mestre, Italy

Michela Signoretto,

CATMAT Lab, Department of Molecular Sciences and Nanosystems, Ca Foscari University Venice and INSTM Consortium, RU of Venice, Via Torino ۱۵۵, ۳۰۱۷۲ Venezia Mestre, Italy

Federica Menegazzo

CATMAT Lab, Department of Molecular Sciences and Nanosystems, Ca Foscari University Venice and INSTM Consortium, RU of Venice, Via Torino ۱۵۵, ۳۰۱۷۲ Venezia Mestre, Italy