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All Journal Journal of Degraded and Mining Lands Management
E S Fernando
Department of Forest Biological Sciences, College of Forestry and Natural Resources, The University of the Philippines – Los Baños College, 4031 Laguna, Philippines
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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The potential use of indigenous nickel hyperaccumulators for small-scale mining in The Philippines Fernando, E S; Quimado, M O; Trinidad, L C; Doronila, A I
Journal of Degraded and Mining Lands Management Vol. 1 No. 1 (2013)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2013.011.021

Abstract

Uptake of nickel and three other heavy metals (copper, cobalt, and chromium) was examined in 33 species of the common and rare native vascular plants growing in an ultramafic area currently subjected to mining in Zambales Province, Luzon, Philippines. Leaf tissue samples were initially screened in the field using filter paper impregnated with dimethylglyoxime (1% solution in 70% ethyl alcohol) and later analyzed by atomic absorption spectroscopy. One species was found to be a hypernickelophore (>10,000 µg/g), eight species were nickel hyperaccumulators (>1,000 µg/g), nineteen species were hemi-accumulators (>100-1,000 µg/g), and five species were non-accumulators (<100 µg/g). This paper significantly adds to the list of hyperaccumulator species first reported for the Philippines in 1992. The findings will be discussed in context of using indigenous species for post mining ecological restoration and nickel phytoextraction in small-scale mining in the Philippines
Copper and arsenic accumulation of Pityrogramma calomelanos, Nephrolepis biserrata, and Cynodon dactylon in Cu- and Au- mine tailings Ancheta, Menzuela Hidalgo; Quimado, M O; Tiburan Jr, C L; Doronila, A; Fernando, E S
Journal of Degraded and Mining Lands Management Vol. 7 No. 3 (2020)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2020.073.2201

Abstract

Metallophytes are group of plants that can thrive on metal-rich substrate. These plants have potential in various green technologies. However, it is a must to first identify plants that can absorb heavy metals and tolerate the high concentration in their tissues. This study assessed the ability of plants thriving in a Cu-Au mined areas to uptake copper (Cu), and arsenic (As). The Cu and As content of the dried leaves, root tissues and soils were quantified using Atomic Absorption Spectrophotometer (AAS), and their bioaccumulation coefficient (BAC) were computed. Three species, Pityrogramma calomelanos, Cynodon dactylon and Nephrolepis biserrata, showed metal accumulation in the plant tissues. The three species have accumulation of Cu in the root and the estimated bioconcentration factor (BCF) is more than 1.0 which indicates the ability of these species to tolerate for said the metal hence is a good candidate for phytostabilization of polluted soils. Noteworthy was the accumulation of As in the shoot of the three species despite of the low soil As (<0.01 µg/g). Nephrolepis biserrata had the highest arsenic bioaccumulation factor of 30.91 followed by Cynodon dactylon (11.01) then Pityrogramma calomelanos (8.78) which make them potential species for clean-up of As through phytoextraction. Moreover, this study added C. dactylon as tolerant of arsenic in mined-out area in the Philippines. 
Co-Authors A I Doronila Ancheta, Menzuela Hidalgo Doronila, A L C Trinidad M O Quimado Tiburan Jr, C L