Phytoremediation potential of some grasses on lead heavy metal in tailing planting media of former tin mining

Abstract

Abstract. Khodijah NS, Suwignyo RA, Harun MU, Robiartini L. 2019. Phytoremediation potential of some grasses on lead heavy metal in tailing planting media of former tin mining. Biodiversitas 20: 1973-1982. Agricultural production on tin tailings land must consider the safety of products from Pb metal contaminants. The presence of Pb metal can be overcome by using plants as phytoremediation. This study aimed to obtain information on the ability of phytoremediation of Pb by various types of grass and its interaction with the types of ameliorants in tin tailings media. Three species of grass were used, namely Pennisetum purpureum, Saccharum spontaneum, and Hymenachne acutigluma, and two types of ameliorant, namely lime and compost. The study was designed using a factorial treatment design laid out in a completely randomized design with two treatment factors, namely the type of grass and the type of ameliorant. Observations were done on growth, shoot Pb content and root Pb content. The ability of phytoremediation was assessed by using the approach of Bioconcentration factor (BCF) and Translocation Factor (TF) values. The highest phytoremediation ability was found in treatment of H. acutigluma grass treated with lime ameliorant, followed by S. spontaneum treated with lime ameliorous and S. spontaneum treated with compost ameliorant. Based on BCF values, P. purpureum and H. acutigluma were categorized as accumulators, and S. spontaneum was classified as an excluder. Based on TF values, the three types of grass used were classified as phytostabilisation. The high ability of phytoremediation in H. acutigluma was caused by its high BCF values, ​​while the high ability of phytoremediation on S. spontaneum was caused by its low translocation factor value and high Pb absorption efficiency.

Seasonal Variations in Bioaccumulation and Translocation of Toxic Heavy Metals in the Dominant Vegetables of East Kolkata Wetlands: a Case Study with Suggestive Ecorestorative Strategies

“…In keeping with the recent trend of conservative development in and around EKW, the authors view co-cultivating with low-metal-accumulating, deep-rooted, high-biomass-yielding, bioenergy-producing perennial grass species and selective PGPR strains can assist in HM phytoremediation [ 36 , 64 – 66 ]. Therefore, this combinatorial approach will make the cultivable produce from the selected study site safe for human consumption besides restoring the soil ecosystem of this metal-impacted site from the perils of HM toxicity, as illustrated in detail in Fig.…”

The Biochar-Enhanced Phytoextraction of Heavy-Metal-Polluted Tropical Soils by Thorny Amaranth (Amaranthus spinosus)

“…It is also probable to lower the concentrations of soil heavy metals by phytoextraction using heavy-metal bioaccumulating plants [37][38][39][40][41]. However, this kind of research is currently rarely conducted in tropical soils with tropical vegetation.…”

Electro-enhanced phytoremediation system on the removal of trace metal concentration from contaminated water

“…Grasses are prospective candidates for phytoremediation purposes due to hardy in nature, rapid growth, hairy and deep-root system, high biomass-producing, fast growth, tolerant to toxic effects of metals and contaminants, adaptations to infertile soils, and successive shoot regrowth after harvest, among the reason [ 25 , 26 , 27 ]. Although most grasses have desirable characteristics for trace element phytoremediation [ 28 ], but their ability is depending on the trace element bioavailability, the mechanisms involved in the uptake, transport, accumulation, toxicity, tolerance to each trace element, and the cultivation system [ 6 ].…”