Anaerobic treatability from the sodium hydroxide-methanol transeserification of Jatropha curcas L. oil wastewater with cow dung enhanced rumen

Date

4-2009

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Jovita L. Movillon

Committee Member

Amelia E. Parao, Jerico R. Aguila,

Abstract

The wastewater from the sodium hydroxide-methanol transesterification of Jatropha curcas L. oil was subjected to anaerobic treatment. The wastewater was analyzed to have a COD of 7534mg/L and a BOD of 5862mg/L with a pH of 9.6. Performance parameters were measured for 52 days. The inoculum used was rumen from the previous study and fresh cow dung inoculum with varying amounts. After phase 1 of acclimatization for 32 days, phase 2 was conducted with a HRT of 20 days. At this phase OLR's of 100, 200, and 400mg/L-day were tested on the effect to the reactor performance. Feeding of 100ml of substrate was done, with concentrations dependent on OLR were done without pH control. Parameters such as gas production profile, pH, and temperature were monitored daily from phase 1 to phase 2. Additional monitoring for COD and alkalinity were done in phase 2. The pH was maintained at a range of 6.4-7.4 at the cost of its alkalinity that showed to be decreasing. Good gas production was observed, and was found tyo contain methane by gas chromatography in accordance with fairly high COD reduction.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology

Document Type

Thesis

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