Acacia auriculiformis and Eragrostis chariis: Potential Vegetations from Tin-Mined Lands in Bangka Island as Pb and Sn Phytoremediator: Acacia auriculiformis dan Eragrostis chariis: Vegetasi Potensial dari Lahan Bekas Tambang Timah Pulau Bangka Sebagai Fitoremediator Pb dan Sn
| Main Authors: | Sari, Eka, Giyanto, Giyanto, Sudadi, Untung |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | ind |
| Terbitan: |
Departemen Ilmu Tanah dan Sumberdaya Lahan
, 2016
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| Online Access: |
http://journal.ipb.ac.id/index.php/jtanah/article/view/12697 http://journal.ipb.ac.id/index.php/jtanah/article/view/12697/13550 |
Daftar Isi:
- Timbal (Pb) dan Timah (Sn) merupakan logam berat yang paling umum ditemukan di lahan bekas tambang timah, Pulau Bangka. Pemulihan tanah tercemar logam berat dapat dilakukan dengan teknologi fitoremediasi. Penelitian ini bertujuan menganalisis komposisi dan struktur vegetasi di lahan bekas tambang timah, mengevaluasi akumulasi Pb dan Sn di dalam tanah dan jaringan vegetasi dominan, serta menentukan vegetasi potensial untuk dimanfaatkan sebagai fitoremediator Pb dan Sn. Pengamatan dilakukan di lahan bekas tambang timah yang sudah direklamasi (LBTR), lahan bekas tambang timah yang belum direklamasi (LBTB), dan lahan hutan sekunder sebagai kontrol. Vegetasi dominan ditentukan berdasarkan kurva spesies area dan analisis vegetasi dengan metode Kuadrat. Akumulasi Pb dan Sn dalam tanah dan jaringan vegetasi dominan masing-masing ditetapkan menggunakan pengekstrak Morgan dan toxicity characteristic leaching procedure (TCLP). Hasil penelitian menunjukkan bahwa Sn-tanah tidak terdeteksi. Kadar total Pb-tanah di LBTR dan LBTB melebihi baku mutu. Kadar total Pb-tanah tertinggi terukur di LBTR. Kadar Pb dan Sn pada jaringan vegetasi dominan tidak melebihi batas normal. Acacia auriculiformis di lahan hutan sekunder dan Eragrostis chariis di LBTB berpotensi sebagai fitoremediator Pb dan Sn. Kata kunci: Acacia auriculiformis, Eragrostis chariis, Pb, fitoremediator, Sn
- Lead (Pb) and Tin (Sn) are heavy metals most commonly found in tin-mined lands, Bangka Island. Heavy metal contaminated soil can be remediated by applying phytoremediation technology. This research was aimed to analyze vegetation composition and structure in tin-mined lands, to evaluate Pb and Sn accumulation in soils and tissues of the dominant vegetations, and to determine potential vegetations to be utilized as Pb and Sn phytoremediator. The observation was conducted at reclaimed tin-mined lands (LBTR), unreclaimed tin-mined lands (LBTB), and secondary forest lands as the control. Dominant vegetation was determined by the species-area curve and vegetation analysis using the Square method. Accumulation of Pb and Sn in soil and tissue of the dominant vegetation were respectively determined using Morgan extractant and toxicity characteristic leaching procedure (TCLP). The results showed that soil-Sn was undetected. The total soil-Pb in LBTR and LBTB exceeded its quality standard. The highest level of total soil-Pb was found in LBTR. The content of tissue-Pb and -Sn in the dominant vegetation did not exceed them each normal limits. Acacia auriculiformis in secondary forest and Eragrostis chariis in LBTB were found potential to be utilized as Pb and Sn phytoremediator. Keywords: Acacia auriculiformis, Eragrostis chariis, Pb, phytoremediator, Sn