Аннотация:Treatment of coal mine wastewater (CMW) and reclamation of depleted coal mines are serious environmental problemsworldwide. Phytoremediation is a promising solution that is set back by high costs of planting material. To mitigate these issues,the feasibility of utilization CMW rich in Fe, Mn, and Zn for irrigation was tested with Scots pine (Pinus sylvestris L.) andbrome (Bromus inermis Leyss) plants. Compatibility of the CMW application with the pesticides thiametoxam, propamocarb,and phosethyl was studied. The CMW possessed no acute toxicity the plants (n = 10 for pine, n = 30 for brome; p = 0.05). Fe, Mn,or Zn content of the brome plant biomass did not increase. Embedding brome seeds into a chitosan cell carrier with biomass ofmicroalga Pseudococcomyxa simplex (Mainx) Fott grown in the CMW increased their germination rate by 30% by the third day ofobservation (n = 90, p = 0.05). Combination of the pesticide treatment, CMW irrigation, and the microalgal biomass applicationstimulated growth of pine seedlings increasing their shoot length by 7%–25% (n = 10, p = 0.05). The results obtained support thepossibility of the studied CMW valorization via growing of plants for coal mine reclamation. The CMW can be consumed forirrigation of the plants and/or for growing of the microalgal biomass used for seed treatment and soil amendment.
