Remediation and recycling of the soil contaminated with petroleum hydrocarbon

Kenta Tabuchi, Ken Ichi Matu-ura, Satoshi Kawakami, Toshikazu Shiratori, Takeshi Saitoh

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

At present in Japan, petroleum contaminated soils are disposed as wastes directly or after a incineration, otherwise left with no action. But, from the reasons of environmental concerns and the shortage of disposal sites, the remediation & recycling of them are strongly needed. Bioremediation is based on microbial degradation of organic contaminants and well known as useful for a petroleum remediation technique in USA. Soil washing is a water-based contaminants concentration/separation technique. Both techniques are cost effective and suitable for recycling of soil because soil functions could be kept intact after treatments. We operated a biopile system, which is known as a solid phase bioremediation, and demonstrated a biological degradation of oil in a petroleum contaminated soil, in which total petroleum hydrocarbon (TPH) in a soil decreased from 24,000 to 12,000 mg/kg for 84 days. A soil washing treatment of the same soil resulted more than 90 % of oil could be concentrated in 30% of the soil. When the same soil washing treatment was applied to the biopile treated soil, 80 % of the soil was remediated as a cleaner soil which contain TPH below 1,000 mg/kg. These effective methods are expected to be in practical use in Japan.

Original languageEnglish
Pages (from-to)14-25
Number of pages12
JournalMetallurgical Review of MMIJ (Mining and Metallurgical Institute of Japan)
Volume15
Issue number1
Publication statusPublished - 1998 Jul 1

ASJC Scopus subject areas

  • Metals and Alloys

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