| Title | A circular economy approach to drinking water treatment residue management in a catchment impacted by historic metal mines |
|---|---|
| ID_Doc | 5005 |
| Authors | Nunn, B; Lord, R; Davidson, CM |
| Title | A circular economy approach to drinking water treatment residue management in a catchment impacted by historic metal mines |
| Year | 2023 |
| Published | |
| Abstract | Drinking water treatment residues (DWTR) from mining areas which remove and contain potentially toxic elements (PTE) could still potentially be used as a soil amendment to restore contaminated sites in the same catchment, thus eliminating waste and reducing the chemical and physical mobility of the pollutants. To assess this restorative and regenerative approach to DWTR management, field and pot trials were established with soils from a historic Pb-Zn mine site in the North East of England, amended with either local DWTR or the nearest available municipal green waste compost (GWC). Soils from the mine site were found to have very low levels of nutrients and very high levels of PTE (Pb and Zn > 13, 000 mg/kg). The perennial grass species Phalaris arundinacea, known for many ecosystem service benefits including soil stabilization, was used throughout this study. The application of the BCR sequential extraction to soils amended with the DWTR in the pot trials found a significant decrease in the bioavailability of Pb and Cu (p < 0.05) after plant growth when compared with an unamended control. The field trial involved 648 pre-grown grass plants planted-out into mine soils amended with either DWTR, GWC or a mixture (MIX) of the two, all at rates of 25-30% w/w. Both amendments and the MIX had significant positive effects on biomass production compared to the unamended control in the following order GWC > MIX > DWTR (p < 0.05). Results of the elemental analysis of biomass from the field trial were generally ambiguous and did not reflect the decreased bioavailability noted in the pot trials using the BCR procedure. Pot trials, however, showed increases in plant growth and decreases in concentrations of Cr, Cu, Pb and Zn in above ground biomass following the application of both amendments. Further work should involve the testing of a mixture of DWTR and other soil amendments to enhance plant growth. The success of these trials should provide confidence for those working in drinking water treatment and catchment management to reuse the waste residues in a circular economy and a sustainable way that could improve water quality over time. |
| https://doi.org/10.1016/j.jenvman.2023.118809 |
Similar Articles
| ID | Score | Article |
|---|---|---|
21481
|
Baragaño, D; Gallego, JLR; Forján, R Short-term experiment for the in situ stabilization of a polluted soil using mining and biomass waste(2021) | |
| 5297
|
Halecki, W; López-Hernández, NA; Kozminska, A; Ciarkowska, K; Klatka, S A Circular Economy Approach to Restoring Soil Substrate Ameliorated by Sewage Sludge with Amendments(2022)International Journal Of Environmental Research And Public Health, 19, 9 | |
| 15063
|
Bousdra, T; Papadimou, SG; Golia, EE The Use of biochar in the Remediation of Pb, Cd, and Cu-Contaminated Soils. The Impact of biochar Feedstock and Preparation Conditions on Its Remediation Capacity(2023)Land, 12, 2 | |
| 13778
|
Hechelski, M; Louvel, B; Dufrénoy, P; Ghinet, A; Waterlot, C A sustainable approach to manage metal-contaminated soils: a preliminary greenhouse study for the possible production of metal-enriched ryegrass biomass for biosourced catalysts(2019)Environmental Monitoring And Assessment, 191, 10 | |
| 14388
|
Turner, T; Wheeler, R; Oliver, I Assessing the Impacts of Land Spreading Water-Treatment Residuals on the Anecic Earthworm Lumbricus terrestris, Soil Microbial Activity, and Porewater Chemistry(2021)Environmental Toxicology And Chemistry, 40, 7 | |
| 23109
|
Hechelski, M; Louvel, B; Dufrénoy, P; Ghinet, A; Waterlot, C The potential of ryegrass (Lolium perenne L.) to clean up multi-contaminated soils from labile and phytoavailable potentially toxic elements to contribute into a circular economy(2019)Environmental Science And Pollution Research, 26, 17 | |
| 15473
|
Antonkiewicz, J; Kowalewska, A; Mikolajczak, S; Kolodziej, B; Bryk, M; Spychaj-Fabisiak, E; Koliopoulos, T; Babula, J Phytoextraction of heavy metals after application of bottom ash and municipal sewage sludge considering the risk of environmental pollution(2022) | |
| 10063
|
Baragaño, D; Forján, R; Aguado, JMM; Martino, MC; García, PD; Rubio, JM; Rueda, JJA; Gallego, JLR Reuse of Dunite Mining Waste and Subproducts for the Stabilization of Metal(oid)s in Polluted Soils(2019)Minerals, 9.0, 8 | |
| 9515
|
Oberholzer, MM; Oberholster, PJ; Ndlela, LL; Botha, AM; Truter, JC Assessing Alternative Supporting Organic Materials for the Enhancement of Water Reuse in Subsurface Constructed Wetlands Receiving Acid Mine Drainage(2022)Recycling, 7.0, 3 | |
| 26114
|
Wieckol-Ryk, A; Pierzchala, L; Bauerek, A; Krzemien, A Minimising Coal Mining's Impact on Biodiversity: Artificial Soils for Post-Mining Land Reclamation(2023)Sustainability, 15, 12 |