Initial sustainability assessment of tapioca starch production system in Lake Toba area

International Conference on Industrial and Systems Engineering 2017

Situmorang, Asido^1 ; Manik, Yosef^1

Engineering Management Study Program, Faculty of Industrial Technology, Institut Teknologi Del, Laguboti-North-Sumatera

22381, Indonesia^1

关键词: Extraction operation;    Life cycle approach;    Material flow analysis;    Principles of sustainability;    Production efficiency;    Sustainability assessment;    System improvements;    Waste treatment plant;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/337/1/012044/pdf
DOI  :  10.1088/1757-899X/337/1/012044

来源: IOP

【 摘 要 】

This study aims to explore to what extent the principles of sustainability have been applied in a tapioca industry located in Lake Toba area and to explore the aspects that open the opportunities for system improvement. In conducting such assessment, we adopted the life-cycle approach using Mass Flow Analysis methods that covers all cassava starch production processes from fresh cassava root till dry cassava starch. The inventory data were collected from the company, in the form of both production record and interviews. From data analysis the authors were able to present a linked flow that describes the production process of tapioca starch that quantifies into the functional unit of one pack marketable tapioca starch weighs 50 kg. In order to produce 50 kg of tapioca, 200 kg cassava root and 800 kg of water are required. This production efficiency translates to 25% yield. This system generates 40 kg of cassava peel, 60 kg of pulp and 850 kg of waste water. For starch drying 208.8 MJ of thermal energy is required in the form of heating fuel. The material flow analysis is employed for impact assessment. Several options in improving the operation are proposed includes utilization of pulp into more valuable co-products, integration of waste treatment plant to enable the use of water recycled from the extraction operation for the washing process, and to application of a waste water treatment system that produces biogas as a renewable energy, which reduces the consumption of fuel in dryer unit.