Efficacy Evaluation of Microwave Technology for Infectious Waste Disposal

Microwave Technology for Infectious Waste Disposal

Authors

  • Apitchaya Sittiwong Division of Clinical Microbiology, Faculty of Associated Medical Sciences, Chiang Mai University
  • Paritchaya Monthanom Division of Clinical Microbiology, Faculty of Associated Medical Sciences, Chiang Mai University
  • Woottichai Khamduang Division of Clinical Microbiology, Faculty of Associated Medical Sciences, Chiang Mai University
  • Sakorn Pornprasert Division of Clinical Microscopy, Faculty of Associated Medical Sciences, Chiang Mai University
  • Kanya Preechasuth Division of Clinical Microscopy, Faculty of Associated Medical Sciences, Chiang Mai University

Keywords:

Infectious waste, Hazardous waste, Microwave, Waste Management

Abstract

         This study evaluated the efficacy of microwave technology for disposing of infectious waste. The technology involves shredding waste into smaller particles, less than one square centimeter, and exposing it to microwave radiation in a closed system. The evaluation was conducted according to the criteria of the State and Territorial Association on Alternative Treatment Technologies (STAATT) Level 3, achieving a reduction of ≥ ×104 log CFU (≥ 4log10 reduction) of Bacillus subtilis spores. The results showed that Steriwave100TM with vessel capacity 100 L, using 400 Volts/3 phase, 40 Amp electricity and generated 110ºC for 20 min in 10% humidity (w/w) could inactivate the spores of Bacillus atrophaeus ATCC 9372 (previously B. subtilis var. niger) at 1.7×104, 1.8×106 and 3.2×106. Therefore, microwave technology could serve as an eco-friendly and sustainable alternative for infectious waste management disposal in healthcare settings

References

กฎกระทรวงว่าด้วยการกําจัดมูลฝอยติดเชื้อ พ.ศ. 2545. ราชกิจจานุเบกษา เล่ม 119 ตอนที่ 86 ก (วันที่ 5 กันยายน 2545). หน้า 1.

Ilyas S, Srivastava RR, Kim H. Disinfection technology and strategies for COVID-19 hospital and bio-medical waste management. Sci Total Environ 2020; 749: 141652. (11 pages).

Morarach S, Kongsap P, Pothichai P, Pungsangsu S. Elimination of infectious wastes by hybrid technology of shredder and autoclave in Sakon Nakhon Hospital. J Sakon Nakhon Hosp 2022; 25(1): 1–10.

ประกาศกระทรวงสาธารณสุข เรื่อง หลักเกณฑ์และวิธีการตรวจสอบเกณฑ์มาตรฐานทางชีวภาพภายหลังการกําจัดมูลฝอยติดเชื้อ พ.ศ. 2565. ราชกิจจานุเบกษา เล่ม 139 ตอนพิเศษ 58 ง (วันที่ 11 มีนาคม 2565). หน้า 6.

Sharma P, Venugopal AP, Sutar PP, Xiao H, Zhang Q. Mechanism of microbial spore inactivation through electromagnetic radiations: a review. J Future Foods 2024; 4(4): 324–34.

Vaid A, Bishop AH. The destruction by microwave radiation of bacterial endospores and amplification of the released DNA. J Appl Microbiol 1998; 85(1): 115–22.

Mahdi AB, Gomes C. Effects of microwave radiation on micro-organisms in selected materials from healthcare waste. Int J Environ Sci Technol 2019; 16(3): 1277–88.

Myneedu VP, Aggarwal A. Disposal of the large volume of sputum positive for Mycobacterium tuberculosis by using microwave sterilisation technology as an alternative to traditional autoclaving in a tertiary respiratory care hospital in Delhi, India. Infect Prev Pract 2020; 2(3): 100072. (5 pages).

Liu J, Li H, Liu Z, Meng X, He Y, Zhang Z. Study on the process of medical waste disinfection by microwave technology. Waste Manag 2022; 150: 13–9.

Ecosteryl. Medical waste treatment and recycling. [online]. Available from: URL: https://www.ecosteryl.com/en.

Liying technology. MDU-10 PRO. [online]. Available from: URL: https://www.liyingtec.com/product/medical-waste-disposal-unit/mdu10pro.

Bertin medical waste. Optimisation of hospital waste flow. [online]. Available from: URL: https://www.bertin-medical-waste.com.

Manegdeg F, Coronado LO, Paña R. Medical waste treatment and electricity generation using pyrolyzer-rankine cycle for specialty hospitals in Quezon City, Philippines. IOP Conf Ser Earth Environ Sci 2020; 463(1): 012180. (8 pages).

Blenkharn JI. Safe disposal and effective destruction of clinical wastes. J Hosp Infect 2005; 60(4): 295–7.

Afnor Editons. National standards and national normative documents. [online]. Available from: URL: https://www.boutique.afnor.org/en-gb/standard/nf-x305031/infectious-waste-h9-reduction-of-microbiological-and-or-mechanicalhazards-/fa205172/417589.

Wang J, Shen J, Ye D, Yan X, Zhang Y, Yang W, et al. Disinfection technology of hospital wastes and wastewater: suggestions for disinfection strategy during coronavirus disease 2019 (COVID-19) pandemic in China. Environ Pollut 2020; 262: 114665. (10 pages).

Jain D, Joshi R, Dhuria D, Sain M. Evaluation of efficacy of autoclave and microwave for sterilization of biomedical waste. Pharma Innov J 2021; 10(7S): 18–20.

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Published

24-09-2025

How to Cite

1.
Sittiwong A, Monthanom P, Khamduang W, Pornprasert S, Preechasuth K. Efficacy Evaluation of Microwave Technology for Infectious Waste Disposal: Microwave Technology for Infectious Waste Disposal. ว กรมวิทย พ [internet]. 2025 Sep. 24 [cited 2026 Feb. 6];67(3):394-402. available from: https://he02.tci-thaijo.org/index.php/dmsc/article/view/273232

Issue

Vol. 67 No. 3 (2025): July - September 2025

Section

Original Articles

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