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Solar energy system reduces time taken to inhibit microbial growth in soil

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  • Phitthayarachasak, Thanathep
  • Thepa, Sirichai
  • Kongkiattikajorn, Jirasak

Abstract

This research studied how to reduce the time consumption and to increase and improve the efficiency of the solarization process. The asymmetry compound parabolic concentrator (ACPC) was developed to produce boiling water to be utilized while the solarization process was in operation. This could decrease the time consumed in the solarization process from 4 to 6weeks to 4h, with a temperature of approximately 41.25°C at the various depth levels, not exceeding 50cm. The test to inhibit the growth of Ralstonia solanacearum, the causative agent of wilt in crops leaves, indicated that R. solanacearum was reduced from the total bacterial population of 10.9×108colony forming unit/g soil (cfu g−1) at soil surface to 9.0×107, 7.5×104 and 4.1×103cfu g−1 within 1, 2 and 4h, respectively.

Suggested Citation

  • Phitthayarachasak, Thanathep & Thepa, Sirichai & Kongkiattikajorn, Jirasak, 2009. "Solar energy system reduces time taken to inhibit microbial growth in soil," Renewable Energy, Elsevier, vol. 34(11), pages 2467-2473.
    • Handle: RePEc:eee:renene:v:34:y:2009:i:11:p:2467-2473
    DOI: 10.1016/j.renene.2009.03.023
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