การย่อยสลายทางชีวภาพของน้ำทิ้งน้ำมันหล่อเย็น

Biodegradation of Cutting Oil Contaminated Wastewater

Name: สุจิตรา กุลตังวัฒนา

Organization : มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

Name: Sujitra Kuntanvattana

keyword: น้ำมันหล่อเย็น

Abstract: The blodegradatron of cutting oil by sod mlcroorganlsms w a s studted usinglaboratory condrtrons. Ten kg of soil was spreaded Into trays of 70 cm x 70 cm x 4 cm. Usedcutting oil was homogeneously mtxed with the soil. There were three expenments: the ftrstwas the study of appropriate moisture content 115%, 25% and 35%), the second was thestudy of volume of seeding (O%, 25% and 40%) and the thtrd was the study of the vanatronof nitrogen sources (organic fertrllzer, chemical fertrlrzer , ammonium sulphate and urea). Soilsamples were collected penodlcally to analyze for the moisture content, pH, total and HC-degradattngmicroorganrsms, total and aliphatc HC. MicroorganIsms were enumerated bytotal plate counts technique. Total HC was measured using an extraction method whilealiphatrc HC was measured by gas chromatography. Each experiment lasted 60 days.From the first experiment, It was found that the average pH of the sod was 7.4for those with 35% moisture content. Amongst the three moisture contents studred, the 35%one exhibits the greatest Increase In the amounts of total mrcroorganlsms, being two-logIncrement. The biodegradatron of total HC and allphatlc HC wrthln 60 days of the 35%treatment was 48.20% and 40.16%, respectively. The results of the seeding studyjmalntalnlng moisture content at 34.39% and so11 pH at 7.2) demonstrate that the amounts oftotal and HC-degradatrng microorganisms were greatest In the 25% seeding treatment during60-100 days of study. Whrlst both the amounts of total and HC-degradatrng microorganisms Inthe 25% seeding treatment were found Increased wrth trme dunng thus penod, those of the40% seeding treatment reduced wrth time. However, dunng the ftrst 60 days, the percentagereduction of both the total and alrphatrc HC were not srgnrfrcantly different from each other.When study the effect of nitrogen sources on the biodegradatron, urea-base compost wasfound to be the best nitrogen sauce. This IS supported by its highest degradation of both thetotal and aliphatrc HC from the soil whereas the populatron of HC-degradatrng microorgannimswas the lowest. However It was found that the population of the total microorganisms In thustreatment was the greatest.After comparing the percentage degradation during 60 days of the treatmentwithout hydrocarbon seedrng (35% moisture content) with the HC seeding and the seedingwith urea additive, the percentage degradation was 48.20%, 61.49% and 72.27%,respectively.

มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

Address: กรุงเทพมหานคร

Email: info.lib@mail.kmutt.ac.th

Name: สิรินทรเทพ เต้าประยูร

Role: อาจารย์ที่ปรึกษา

Name: นฤมล แก้วกล่ำ

Role: อาจารย์ที่ปรึกษา

Created: 2539

Issued: 2005-04-13

Modified: 2560-07-17

วิทยานิพนธ์/Thesis

ISBN: 9746218115

CallNumber: EV82

tha

DegreeName: วิทยาศาสตรมหาบัณฑิต

Level: ปริญญาโท

Descipline: เทคโนโลยีสิ่งแวดล้อม

Grantor: มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

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