BIOREMEDIATION OF OIL SLUDGE (DIESEL) BY USING LABSCALE LANDF ARMING
TECHNOLOGY
CHEW CHII TSONG
ENVIRONMENTAL SCIENCE PROGRAMME SCHOOL OF SCIENCE AND TECHNOLOGY
UNIVERSITI MALAYSIA SABAH
2009
V
ABSTRAK
Terdapat banyakjenis mikrob telah dijumpai dalam sekitar sekeliling kita dan terdapat beberapa jenis mikrob mempunyai keupayaan untuk mengdegradasikan hidrokarbon.
Kajian ke atas keupayaan biodegradasi diesel oleh mikrob ReTOS-Wl, ReTOS-Crl, dan koktel (ReCO-Cr2, RdPOS-Crl, ReTOS-Cr2, ReTOS-Cr3, ReTOS-Cr4, dan RePOS-Wl) telah dijalankan dengan menggunakan teknologi landfaming. Daripada kajian, didapati bahawa koktel dapat mengdegradasikan diesel sebanyak 54.31 %.
Kultur tunggal ReTOS-Wl pula dapat mengdegradasikan diesel sebanyak 44.87 % dan kultur tunggal ReTOS-Crl dapat mengdegradasikan diesel sebanyak 47.03 %.
Daripada keputusan, ini menunjukkan bahawa koktel adalah lebih berupaya mengdegradasikan diesel daripada kultur tunggal yang lain. Parameter yang mempengaruhi keupayaan biodegradasi diesel juga ditentu ukur sepanjang tempoh kajian. Hasil kajian didapati bahawa suhu adalah berada dalam linkungan yang sesuai untuk mikrob menjalankan activiti harian iaitu 24 °C hingga 34 °C. Akan tetapi, pH sepanjang tempoh kajian pula adalah sedikit asid iaitu 4 hingga 5.6. Kelembapan tanah pula adalah tidak berada dalam lingkungan yang sesuai iaitu 5 % hingga 20 %.
Hasit dari kajian menunjukkan kesan kelembapan tanah lebih mempengaruhi keupayaan biodegradasi berbanding dengan pH dan suhu.
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ABSTRACT
There are many microbes that exist in the environment and some of these microbes have the ability to degrade hydrocarbons. The ability of biodegradation of diesel by strain ReTOS-Wl, ReTOS-Crl, and consortia (ReCO-Cr2, RdPOS-Crl, ReTOS-Cr2, ReTOS-Cr3, ReTOS-Cr4, and RePOS-Wl) are being carried out using landfarming technology. Results of the study show that consortia are able to degrade 54.31 % of diesel. While ReTOS-Wl are able to degrade 44.87 % of diesel and ReTOS-Crl are able to degrade 47.03 % of diesel. Based on the results, it is known that consortia are more effective in diesel biodegradation than other single strain. Parameters that influenced diesel biodegradation were also determined during the study. The results show that during the experiment, temperature is in the ideal range for microbial activities which is between the ranged 24 °C to 34 °C. However, pH of these plots during experiment is slightly acidic which is 4 to 5.6. Moisture content on the other hand, is not in the ideal range or microbial activities, which is around 5 % to 20 %.
This study shows that moisture content have more influence to the biodegradation of diesel as compared to pH and temperature.
