Influence of binder on physical properties of fuel briquettes from cassava rhizome waste | |
| Author | Sujinda Wiwatpanyaporn |
| Call Number | AIT Thesis no.EV-13-29 |
| Subject(s) | Binders (Materials) Fuel-briquet plants Cassava |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering and Management |
| Publisher | Asian Institute of Technology |
| Abstract | The purpose of this study was to investigate the possibility of producing briquettes from cassava rhizome charcoal with suitable binder. Five binders were used, namely molasses, starch gel, concentrated slop, cassava pulp, and soybean residue. Influence of different binders was investigated at the ratio of 6:4, 7:3, 8:2, and 9:1 with briquette without the binder as the blank for this experiment. For briquette production, cassava rhizome was burnt as charcoal by carbonization and ground by hammer mill. Major particle sizes of cassava rhizome charcoal were 1 and 2.80 millimeter which represent 25.45 and 22.07 percent by weight, respectively. Briquettes were prepared by using a cold and low pressure densification machine. Physical as well as fuel properties of the briquettes were analyzed to assess suitable binder and ratio for production of the briquettes. In addition, the briquette properties made from cassava rhizome charcoal were compared with the wood charcoal. Physical properties such as density, compressive strength, and impact resistance index (IRI)showed gradual reducing when increased amount of binder was used. It was found that the briquette that used molasses as binder at ratio of 9:1 had highest density of 0.91 g/cm2, compressive strength of 14.94 kg/cm2, and was a acceptable impact resistant value for fuel (>50). Measurement of IRI found that using cassava pulp as binder, alone cassava rhizome charcoal, and all briquettes at ratio of 9:1 were not suitable to produce as the briquettes.T he results obtained shown that the cassava rhizome charcoal with had the calorific value of 25,076.65kJ/kg, lower than wood charcoal (31,431.42 kJ/kg). Moreover, the calorific value decreased to 20,904.88 –23,677.27 kJ/kg when increasing the amount of binder was used and also depending on the type of binder. Using starch gel as binder at ratio of 9:1 yielded highest calorific value. From estimation of thermal efficiency, it was found that the briquette mixed with cassava pulp had highest thermal efficiency which was in the range of 19.00-24.56 percent and was similar to the wood charcoal (24.88%). |
| Year | 2013 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | Annachhatre, Ajit P.; |
| Examination Committee(s) | Chettiyappan Visvanathan ;Salam, P. Abdul; |
| Scholarship Donor(s) | Royal Thai Government ;Asian Institute of Technology Fellowship; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2013 |