Groundwater and leachate quality assessment in Balaoan Sanitary Landfill in La Union, Northern Philippines

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creativework.keywordsDecomposition; Roofing; Microbial biomass; Soil respiration; Rainfall; Litter bag
dc.contributor.authorMendoza, Mario B.
dc.contributor.authorNgilangil, Leonora E.
dc.contributor.authorVilar, Desiree A.
dc.date.accessioned2026-08-19T15:44:23Z
dc.date.available2026-08-19T15:44:23Z
dc.date.issued2017-03-20
dc.descriptionFull text
dc.description.abstractSimple structures aimed at regulating the amount of rain water dropping into the forest floor were installed to determine the impact of rainfall on leaf litter mass loss, respiration rates, microbial biomass C (Cmic) and metabolic quotient (qCO2). The rainfall manipulation treatments were (I) fully covered (100% reduction); (II) partially covered (50% reduction) and (III) control (fully exposed). Using the litterbag technique, the mass losses of covered Quercus serrata, Quercus acutissima, Acer rufinerve and Pinus densiflora leaf litter were reduced (P < 0.01) by 19–26% compared to fully exposed litter. A positive linear relationship (r = 0.90; P < 0.0001) between litter Cmic and mass loss was noted across all litter types and covering regimes. The mass losses in fully exposed litter were attributed to the leaching effect of rainfall coupled with the synergistic actions of microbes and soil fauna, as suggested by their respiration and microbial biomass. In the covered litter, Cmic was generally reduced (P < 0.01) while fully and partially exposed litter were comparable (P > 0.05). On the other hand, respiration rates and qCO2 were variable and showed no consistent treatment effect except for respiration rates at 3 months. Similarly, soil respiration rates and Cmic were not consistently affected by cover treatments. Evidently, the zero-rainfall condition negatively affected some biological processes in the litter layer but sporadically affected soil processes. The absence of rainfall, even if the soil moisture content was maintained, could affect organic matter turnover in the forest floor.
dc.identifier.citationMendoza M., Ngilangil L., Vilar D., 2017, Groundwater and Leachate Quality Assessment in Balaoan Sanitary Landfill in La Union, Northern Philippines, Chemical Engineering Transactions, 56, 247-252. https://doi.org/10.3303/CET1756042
dc.identifier.doihttps://doi.org/10.3303/CET1756042
dc.identifier.issn22839216
dc.identifier.urihttps://lakasa.dmmmsu.edu.ph/handle/123456789/2391
dc.language.isoen
dc.publisherChemical Engineering Transactions
dc.relation.urihttps://www.cetjournal.it/index.php/cet/article/view/CET1756042
dc.sdgSDG 3
dc.sdgSDG 6
dc.sdgSDG 12
dc.subjectGroundwater quality
dc.subjectLeachate quality
dc.subjectSanitary landfill
dc.subjectHeavy metals
dc.subjectColiform contamination
dc.subjectWaste disposal sites
dc.subjectWater pollution
dc.subject.ddcWater pollution
dc.subject.ddcRefuse disposal
dc.subject.ddcLandfills
dc.subject.ddcGroundwater (Hydrology)
dc.subject.lcshGroundwater -- Quality -- Philippines -- La Union
dc.subject.lcshSanitary landfills -- Environmental aspects -- Philippines -- La Union
dc.subject.lcshLeachate -- Environmental aspects -- Philippines
dc.subject.lcshWater -- Pollution -- Philippines -- La Union
dc.subject.lcshHeavy metals -- Environmental aspects -- Philippines
dc.titleGroundwater and leachate quality assessment in Balaoan Sanitary Landfill in La Union, Northern Philippines
dc.typeArticle
oaire.citation.endPage252
oaire.citation.startPage247
oaire.citation.volume56
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