Rehabilitation of Disturbed Lands with Industrial Wastewater Sludge
Petrova, Tatyana A., Rudzisha, Edelina, Alekseenko, Alexey, Bech, Jaume and Pashkevich, Mariya A., (2022). Rehabilitation of Disturbed Lands with Industrial Wastewater Sludge. Minerals, 12(3), 1-19
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Article
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Sub-type Journal article Author Petrova, Tatyana A.
Rudzisha, Edelina
Alekseenko, Alexey
Bech, Jaume
Pashkevich, Mariya A.Title Rehabilitation of Disturbed Lands with Industrial Wastewater Sludge Appearing in Minerals Volume 12 Issue No. 3 Publication Date 2022-03-18 Place of Publication Basel, Switzerland Publisher MDPI Start page 1 End page 19 Language eng Abstract Wastelands of the mining industry are among the largest of disturbed areas that demand revitalization. To reduce environmental impact and to better manage these geo-resources, the formation of sustainable plant and soil complexes and the restoration of self-recovery soil function are critical points. The successful return of vegetative cover at post-mining sites requires eliminating the deficiency of organic matter. For this, we assessed the usability of non-traditional ameliorants to provide a better understanding of benefits from mutual dependencies of environmental resources. To prevent losses and to close resource cycles, we studied the applicability of wastewater sludge from the pulp and paper (SPP) industry as an amendment to counteract soil degradation and rehabilitate human-disturbed lands. Waste rock limestone, beresite, and phosphogypsum substrates of post-mining sites were used in vitro for the application of sludge and peat mixture and consequent grass seeding. The formed vegetative cover was analyzed to compare the germination and biomass growth on reconstructed soils. We assessed the efficiency of ameliorant combinations by two approaches: (1) the traditional technique of cutting-off plant material to measure the obtained plant biomass, and (2) digital image analysis for RGB-processed photographs of the vegetative cover (r2 = 0.75–0.95). The effect of SPP on plant cover biomass and grass height showed similar results: land rehabilitation with the formation of a 20 cm soil layer on mine waste dumps was environmentally suitable with an SPP:soil ratio of 1:3. However, excessive application (ratio 1:1 of SPP to the soil) negatively affected seed germination and plant vegetation. Keyword Land revitalization
Post-mining development
Sustainable land-use management
Resource Nexus
Waste recycling
Soil restoration
Biomass productionCopyright Holder The Authors Copyright Year 2022 Copyright type Creative commons DOI 10.3390/min12030376 -
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