Suitability of aquatic biomass from Lake Toba (North Sumatra, Indonesia) for energy generation by combustion process

1st Nommensen International Conference on Technology and Engineering

Brunerová, A.^1 ; Roubík, H.^2 ; Herák, D.^3

Department of Material Science and Manufacturing Technology, Faculty of Engineering, Czech University of Life Sciences Prague, Kamýcká 129, Prague

16500, Czech Republic^1

Department of Sustainable Technologies, Faculty of Tropical Agri Sciences, Czech University of Life Sciences, Prague, Czech Republic^2

Department of Mechanical Engineering, Faculty of Engineering, Czech University of Life Sciences, Prague, Czech Republic^3

关键词: Combustion pro-cess;    Direct combustion;    Eichhornia crassipes;    Energy generations;    Energy productions;    Gross calorific values;    Myriophyllum spicatum;    Sumatra , Indonesia;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/237/1/012001/pdf
DOI  :  10.1088/1757-899X/237/1/012001

来源: IOP

【 摘 要 】

Several aquatic plant species were identified as aquatic pollution of Lake Toba, North Sumatra (Indonesia); specifically, water hyacinth Eichhornia crassipes and aquatic weeds Hydrilla verticillata and Myriophyllum spicatum due to their high biomass yield which causes impenetrable mats at the bottom and surface of the lake. That complicates other vegetation growth and utilization of water areas for fishing or recreation. In attempt to clean the lake and prevent plants expansion, great amount of plants populations are removed from water but subsequent efficient utilization of such aquatic biomass is not ensured. Present research investigated energy potential of aquatic biomass originated from mentioned aquatic plants from Lake Toba and its possible utilization for energy production by direct combustion. Performed chemical analysis contained from determination of moisture, ash and volatile matter contents and calorific values. Evaluation of results proved highest suitability and energy potential of Eichhornia crassipes with gross calorific value (GCV) 16.31 MJ•kg-1, followed by Hydrilla verticillata with GCV 15.24 MJ•kg-1. Samples of Myriophyllum spicatum exhibited unsatisfactory results due to its low GCV (11.27 MJ•kg-1) in combination with high ash content (36.99%) which indicates complications during combustion, thus, low energy production efficiency and overall unsuitability for combustion purposes.