Arsenic, Zinc, and Aluminium Removal from Gold Mine Wastewater Effluents and Accumulation by Submerged Aquatic Plants (Cabomba piauhyensis,Egeria densa, andHydrilla verticillata)

Abstract

The potential of three submerged aquatic plant species (Cabomba piauhyensis, Egeria densa, and Hydrilla verticillata) to be used for As, Al, and Zn phytoremediation was tested. The plants were exposed for 14 days under hydroponic conditions to mine waste water effluents in order to assess the suitability of the aquatic plants to remediate elevated multi-metals concentrations in mine waste water. The results show that the E. densa and H. verticillata are able to accumulate high amount of arsenic (95.2%) and zinc (93.7%) and resulted in a decrease of arsenic and zinc in the ambient water. On the other hand, C. piauhyensis shows remarkable aluminium accumulation in plant biomass (83.8%) compared to the other tested plants. The ability of these plants to accumulate the studied metals and survive throughout the experiment demonstrates the potential of these plants to remediate metal enriched water especially for mine drainage effluent. Among the three tested aquatic plants, H. verticillata was found to be the most applicable (84.5%) and suitable plant species to phytoremediate elevated metals and metalloid in mine related waste water.

Interaction of As and Sb in the hyperaccumulator Pteris vittata L.: changes in As and Sb speciation by XANES

“…This contradiction has affected the multi-metal extraction efficiency. To solve this problem, researchers have investigated multi-metal hyperaccumulators (Abu Bakar et al 2013, Keller 2006, Marchiol et al 2004, Shahid et al 2012. P. vittata can accumulate As, Pb (Wan et al 2014), Cr (Su et al 2005), and Sb, although not in a single population.…”

Distribution and geological sources of selenium in environmental materials in Taoyuan County, Hunan Province, China

“…Therefore, food crops planted on the Lower CambrianEdiacaran black rocks series outcrop areas have more available W-Se. The accumulation of heavy metals in the environment to toxic concentrations may lead to ecological damage (Ashraf et al 2011a, b;Abu Bakar et al 2013). Excessive amounts of W-Se in the soil lead to toxic amounts of Se in edible parts of food crops, which can lead to Se poisoning in animals and human.…”

Environmental impact of the Midia Port - Black Sea (Romania), on the coastal sediment quality

“…The heavy metals may damage the ecological aquatic balance for many communities and their ecosystems, nally, being considered harmful to humans due to their bioaccumulation and magni cation capacity [5]. Lately, the heavy metal's accumulation in various vegetal (e.g., aquatic plant species) and animal organisms (e.g., sh tissue) have been largely investigated in many parts of the world [6,7]. The concentrations of heavy metals in aquatic environments (e.g., water and sediments) can be used as indicators regarding the food chain magni cation, the ecological background and the land use modications in the catchment area [8][9][10].…”