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Baseline study of methane emission from open digesting tanks of palm oil mill effluent treatment 总被引:1,自引:0,他引:1
Anthropogenic release of greenhouse gases, especially CO2 and CH4 has been recognized as one of the main causes of global warming. Several measures under the Kyoto Protocol 1997 have been drawn up to reduce the greenhouse gases emission. One of the measures is Clean Development Mechanisms (CDM) that was created to enable developed countries to cooperate with developing countries in emission reduction activities. In Malaysia, palm oil industry particularly from palm oil mill effluent (POME) anaerobic treatment has been identified as an important source of CH4. However, there is no study to quantify the actual CH4 emission from the commercial scale wastewater treatment facility. Hence, this paper shall address the CH4 emission from the open digesting tanks in Felda Serting Hilir Palm Oil Mill. CH4 emission pattern was recorded for 52 weeks from 3600 m3 open digesting tanks. The findings indicated that the CH4 content was between 13.5% and 49.0% which was lower than the value of 65% reported earlier. The biogas flow rate ranged between 0.8 l min−1 m−2 and 9.8 l min−1 m−2. Total CH4 emission per open digesting tank was 518.9 kg day−1. Relationships between CH4 emission and total carbon removal and POME discharged were also discussed. Fluctuation of biogas production was observed throughout the studies as a result of seasonal oil palm cropping, mill activities, variation of POME quality and quantity discharged from the mill. Thus only through long-term field measurement CH4 emission can be accurately estimated. 相似文献
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Noboru Ishibashi Kazuyoshi Yamamoto Hiroyuki Wakisaka Yutaka Kawahara 《Journal of Polymers and the Environment》2014,22(2):267-271
The hydrothermal treatments were conducted prior to the carbonization of oak woods and the obtained charcoals were activated using carbon dioxide or water vapor. The hydrothermal treatments brought about the elutions of acid-soluble lignin fractions as well as hemicellulose fractions accompanied with the decomposition of lignin carbohydrate complexes in the cell walls, which lowered not only the carbon yield of charcoal but also the crystal parameters for the carbon crystallites. However, the activated carbons (AC) produced via the hydrothermal pre-treatment showed superior adsorption properties especially for the adsorptions of 2-methylisoborneol and geosmin as compared with the untreated commercial AC. The hydrothermal treatments prior to the carbonization have some potential to increase the fractions of meso-pores effective for the adsorption of globular shaped molecules. 相似文献
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Shirai Yoshihito Wakisaka Minato Yacob Shahrakbah Ali Hassan Mohd Suzuki Shin’ichi 《Mitigation and Adaptation Strategies for Global Change》2003,8(3):237-252
Palm oil industry in Malaysia is one of the potential candidates for the CDM project because large amount of methane is emitted
from the lagoons and open digesting tank of the wastewater treatment system. Therefore the first objective of the project
is to investigate the actual GHG emission from the lagoons and open digesting tank in palm oil mills in order to establish
the baseline for CDM project. Results indicated that methane contribution to biogas released from the open digesting tank
and lagoon systems were 35% and 45%, respectively. These values are much lower than the reported value of 65% obtained by
complete anaerobic condition of lab-scale experiments. Based on actual methane release measurement and information gathered
from palm oil mill about wastewater treatment, significant amount of methane emission to the atmosphere can be reduced with
the installation of new closed digesting tank system converted from the open digesting tank such as just by covering it with
applying CDM. It is estimated that a total of RM2.6 million could be obtained from the selling of electricity generated from
biogas generation and Certified Emission Reduction(CER).
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
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