Process of changing municipal solid waste into RDF using rotary bio-drying

Authors

  • Mongkol Patcharavongsiri
  • Tusanee Tondee
  • Sombat Teekasap

Keywords:

Refuse Derived Fuel, Rotary Bio-drying, Dewatered Municipal Solid Waste

Abstract

Refuse Derived Fuel (RDF) is produced by significantly reducing the moisture content of Municipal Solid Waste (MSW). By using bio-drying process inhabited the heat from the degradation process of organic waste. The MSW size was reduced to be less than 3 inches in order to have a thorough circulation of air. This study aimed to investigate the effects of rotation speed and initiate preheat time on the rotary bio-drying process for drying the high initial moisture content households solid waste, allowing satisfied energy content biofuel. The density was 212 kg/m3, air inlet was 0.075 m3/hr/kg, with the rotation rate at 0.1, 0.2, 0.3, 0.4 rpm, preheating at 45°C for 6, 9, 12 hours in 8 days, respectively. As a result, preheating at 45°C for 12 hours, rotating speed at 0.4 rpm, with the air inlet at 0.075 m3/hr/kg, resulting in the reducing of the moisture content to 13%, and the increasing of the heating value to 4,588.91 kcal/kg, which was higher than standard RDF at 3,820.80 kcal/kg. Rotary bio-drying process can improve the quality of the waste within a short period of time. The RDF with high heating value is required in the industrial sector for use as fuel in the manufacturing.

References

[1] PCD (Pollution Control Department). (2017). Municipal solid waste report in Thailand 2017. Retrieved from http://www.pcd.go.th/Info_serv/File/WasteSociety60.pdf.

[2] Raksanau, C., & Maneechot, P. (2017). The potential of bio-drying process in improving quality of the processed waste from the mechanical biological treatment for industrial heating systems. Journal of Renewable Energy and Smart Grid Technology, 12(2), 53-63.

[3] Shao, L. M., Z. H. Ma, et al. (2010). Bio-drying and size sorting of municipal solid waste with high water content for improving energy recovery. Waste Management 30(7): 1165-1170.

[4] Mahl, B. (2005). Aeration as an instrument for process optimization of intensive processing in MBT plants. In: Kuehle Weidemeier, M. (ed) Proceedings International Symposium MBT 2005-Mechanical biological treatment and automatic sorting of municipal solid waste, November 2005, pp. 281-283 Cuvillier Varbe, Gothingen, Germany.

[5] Ling Z., W.M. Gu, et al. (2010). Effect of air-flow rate and turning frequency on bio-drying of dewatered sludge. water research 44(20). pp.6144-6152.

[6] Dufour, P. (2006). Control engineering in drying technology: review and trends. Drying Technol. 24, 889-904.

[7] Thomas H. Christenser. (2011). Solid Waste Technology & Management (Volume 2). United Kingdom: John Wiely & Sons.

[8] Kasberger, P. (1995). Das dynamisch gesteverte LESCHA-Verfahren (The dynamically controlled LESCHA-Process, in German). In: Wiemer, k. and Kern, M. (eds.). abfallwirtschaft Neues aus Forschung and praxis-Herstellerforum Bioabfall-Verfahrer der Kompostierung, Germany.

[9] Zhang, D. Q., He, P. J., Yu, L. Z., & Shao, L. M. (2009). Effect of inoculation time on the bio-drying performance of combined hydrolytic–aerobic process. Bioresource Technology, 100(3), 1087-1093.

[10] ZHANG, D., Pinjing, H. E., Liming, S. H. A. O., Taifeng, J. I. N., & Jingyao, H. A. N. (2008). Biodrying of municipal solid waste with high water content by combined hydrolytic-aerobic technology. Journal of Environmental Sciences, 20(12), 1534-1540.

[11] Adani, F., Baido, D., Calcaterra, E., & Genevini, P. (2002). The influence of biomass temperature on biostabilization–biodrying of municipal solid waste. Bioresource technology, 83(3), 173-179.

[12] Somsai, K., Tondee, T., & Kerdsuwan, S. (2016). Effect of airflow on moisture removal of rotary biodrying reactors. Jurnal Teknologi, 78(5-6).

[13] NETL. (2015). Waste. Retrieved from http://www.netldoe.gov/research.

[14] Varma, V. S., & Kalamdhad, A. S. (2014). Stability and microbial community analysis during rotary drum composting of vegetable waste. International Journal of Recycling of Organic Waste in Agriculture, 3(2), 52.

[15] Zhao, L., W. M. Gu, et al. (2010). Effect of air-flow rate and turning frequency on bio-drying of dewatered sludge. water research 44(20): 6144-6152.

[16] Chaya, W. and S. H. Gheewala. (2007). Life cycle assessment of MSW-to-energy schemes in Thailand. Journal of Cleaner Production (15), 1463-1468.

Downloads

Published

2019-12-22

How to Cite

Patcharavongsiri, M., Tondee, T., & Teekasap, S. (2019). Process of changing municipal solid waste into RDF using rotary bio-drying. Journal of Renewable Energy and Smart Grid Technology, 14(2). Retrieved from https://ph01.tci-thaijo.org/index.php/RAST/article/view/204103

Issue

Vol. 14 No. 2 (2019): July-December

Section

Articles

License

All copyrights of the above manuscript, including rights to publish in any media, are transferred to the SGtech.

The authors retain the following rights;

            1. All proprietary rights other than copyright.

            2. Re-use of all or part of the above manuscript in their work.

            3. Reproduction of the above manuscript for author’s personal use or for company/institution use provided that

            (a) prior permission of SGtech is obtained,

            (b) the source and SGtech copyright notice are indicated, and

            (c) the copies are not offered for sale.