ABSTRACT

Selenium (Se), a metalloid typically natural in origin, is also present in coal washery by-products such as fly-ash stockpiles. The removal of Se in coal washery by-products can be achieved through various bio-physico-chemical processes. This study investigated the phytoremediation of Se from post coal process wastes using Brassica juncea species. The selected plant species were grown in coal process wastes enriched with either a growth soil mix or hydroponic substrates. Successful Se extraction (48% and 28%) was achieved from both mixes. The tested plant species also accumulated other heavy metals (Arsenic, Cadmium, Copper, Lead) along with selenium in the plant biomass.

摘要

硒（Se）是通常天然来源的准金属，也存在于洗煤厂的副产品中，例如粉煤灰库存。可以通过各种生物物理化学方法来去除洗煤厂副产品中的硒。本研究调查了使用芥菜种对煤后处理废物中硒的植物修复作用。选定的植物物种在富含过程土壤混合物或水培基质的煤炭加工废料中生长。从两种混合物中都成功提取了硒（分别为48％和28％）。被测植物物种还与植物生物质中的硒一起积累了其他重金属（砷，镉，铜，铅）。