Creation of Technosols to Decrease Metal Availability in Pyritic Tailings with Addition of Biochar and Marble Waste

Moreno‐Barriga, Fabián; Díaz, Vicente; Acosta, José A.; Muñoz, María Ángeles; Faz, Ángel; Zornoza, Raúl

doi:10.1002/ldr.2714

Cited by 16 publications

(5 citation statements)

References 33 publications

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“…Biochar application in the range of 1–5% wt. appears to be the optimum in most cases, regardless of soil type [ 201 , 202 ]. Having in mind an extended field application, any higher rate would perhaps be economically unfeasible and/or impractical in terms of obtaining the initial biomass for biochar production.…”

Section: Effect Of Biochar On Specific Potentially Toxic Elements Mobility and Bioavailabilitymentioning

confidence: 99%

Towards a Soil Remediation Strategy Using Biochar: Effects on Soil Chemical Properties and Bioavailability of Potentially Toxic Elements

Bilias

Nikoli

Kalderis

et al. 2021

Toxics

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Soil contamination with potentially toxic elements (PTEs) is considered one of the most severe environmental threats, while among remediation strategies, research on the application of soil amendments has received important consideration. This review highlights the effects of biochar application on soil properties and the bioavailability of potentially toxic elements describing research areas of intense current and emerging activity. Using a visual scientometric analysis, our study shows that between 2019 and 2020, research sub-fields like earthworm activities and responses, greenhouse gass emissions, and low molecular weight organic acids have gained most of the attention when biochar was investigated for soil remediation purposes. Moreover, biomasses like rice straw, sewage sludge, and sawdust were found to be the most commonly used feedstocks for biochar production. The effect of biochar on soil chemistry and different mechanisms responsible for PTEs’ immobilization with biochar, are also briefly reported. Special attention is also given to specific PTEs most commonly found at contaminated soils, including Cu, Zn, Ni, Cr, Pb, Cd, and As, and therefore are more extensively revised in this paper. This review also addresses some of the issues in developing innovative methodologies for engineered biochars, introduced alongside some suggestions which intend to form a more focused soil remediation strategy.

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Section: Effect Of Biochar On Specific Potentially Toxic Elements Mobility and Bioavailabilitymentioning

confidence: 99%

Towards a Soil Remediation Strategy Using Biochar: Effects on Soil Chemical Properties and Bioavailability of Potentially Toxic Elements

Bilias

Nikoli

Kalderis

et al. 2021

Toxics

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“…2 ). Their main objective is to study anthropized soils due to the development of mining activities (Moreno-Barriga et al, 2017 ; Santos et al, 2019 ; Zornoza et al, 2017 ), in such way; many references analyze the evolution of soils over time, as well as studying the formulation of new Technosols to fill any deficiency or to amend the presence of polluting substances. In most cases, they are Technosols created with mining activity residues and will be applied in the mining operations themselves.…”

Section: Europe Green Strategymentioning

confidence: 99%

Urban areas, human health and technosols for the green deal

Rodrıguez-Espinosa

Pedreño

Gómez-Lucas

et al. 2021

Environ Geochem Health

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Authors aim to carry out a bibliographic review as an initial approach to state of the art related to the quality of urban soils, as well as its possible link with human health. This concern arises from the need to highlight the consequences that soil could face, derived from the growth and aging of the population, as well as its predicted preference for urban settlement. Urban development may pose a challenge to the health of urban soils, due to degradative processes that it entails, such as land take, sealing, contamination or compaction. A healthy soil is the one which maintains the capacity to support ecosystem services, so it can provide numerous benefits to human health and well-being (carbon sequestration, protection against flooding, retention and immobilization of pollutants and a growth media for vegetation and food production). This article addresses threats facing urban soils, the strategies put forward by the European Union to deal with them, as well as the issues that require further attention. Greening cities could be a consensual solution, so authors analyze whether soils of cities are ready for that challenge and what resources need to maintain soil ecosystem functions. This review proposes to use made by waste Technosols for a sustainable green city. Although the use of Technosols as a type of soil is very recent, the interest of the scientific community in this field continues to grow.

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“…In former mine workings across Europe, including sites associated with sulphide mineralisation, technosols have been developed and utilised in order to reduce the threat of contamination posed by tailings [1,90,91]. Technosols are man-made soils, often made up of stock materials such as carbonates, biochars, and crop residues, and have been shown to reduce acidity, immobilise metals, and improve soil quality, fertility, and structure.…”

Section: Environmental Implicationsmentioning

confidence: 99%

Selenium and Other Trace Element Mobility in Waste Products and Weathered Sediments at Parys Mountain Copper Mine, Anglesey, UK

et al. 2017

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Abstract:The Parys Mountain copper mining district (Anglesey, North Wales) hosts exposed pyritic bedrock, solid mine waste spoil heaps, and acid drainage (ochre sediment) deposits. Both natural and waste deposits show elevated trace element concentrations, including selenium (Se), at abundances of both economic and environmental consideration. Elevated concentrations of semimetals such as Se in waste smelts highlight the potential for economic reserves in this and similar base metal mining sites. Selenium is sourced from the pyritic bedrock and concentrations are retained in red weathering smelt soils, but lost in bedrock-weathered soils and clays. Selenium correlates with Te, Au, Bi, Cd, Hg, Pb, S, and Sb across bedrock and weathered deposits. Man-made mine waste deposits show enrichment of As, Bi, Cu, Sb, and Te, with Fe oxide-rich smelt materials containing high Pb, up to 1.5 wt %, and Au contents, up to 1.2 ppm. The trace elements As, Co, Cu, and Pb are retained from bedrock to all sediments, including high Cu content in Fe oxide-rich ochre sediments. The high abundance and mobility of trace elements in sediments and waters should be considered as potential pollutants to the area, and also as a source for economic reserves of previously extracted and new strategic commodities.

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Creation of Technosols to Decrease Metal Availability in Pyritic Tailings with Addition of Biochar and Marble Waste

Cited by 16 publications

References 33 publications

Towards a Soil Remediation Strategy Using Biochar: Effects on Soil Chemical Properties and Bioavailability of Potentially Toxic Elements

Towards a Soil Remediation Strategy Using Biochar: Effects on Soil Chemical Properties and Bioavailability of Potentially Toxic Elements

Urban areas, human health and technosols for the green deal

Selenium and Other Trace Element Mobility in Waste Products and Weathered Sediments at Parys Mountain Copper Mine, Anglesey, UK

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