Speciation of metals in contaminated sediments from Oskarshamn Harbor, Oskarshamn, Sweden
In: Environmental science and pollution research: ESPR, Volume 21, Issue 4, p. 2455-2464
ISSN: 1614-7499
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In: Environmental science and pollution research: ESPR, Volume 21, Issue 4, p. 2455-2464
ISSN: 1614-7499
In: Water and environment journal, Volume 28, Issue 2, p. 277-284
ISSN: 1747-6593
AbstractBatch tests were carried out with sawdust obtained from oak (Quercus robur), maple (Acer platanoides), pine (Pinus sylvestris), beech (Fagus sylvatica) and wood chips from oak and pine. Leaching of organic compounds expressed as dissolved organic carbon (DOC) in mg/kg of dry mass took place during the first 24 h. The following additional variables were analysed: pH, conductivity, colour, phenols, tannins and lignin, and biochemical oxygen demand (BOD7). When leachates obtained with oak wood chips and pine wood chips were compared, no significant difference was observed. However, in batch tests with sawdust, DOC released by oak (90 000 mg/kg) was significantly higher (P = 0.0001) than DOC released by pine (30 000 mg/kg). The results suggest that particle size is not the only variable affecting the leaching of organic compounds from wood. Regarding BOD, colour [platinum‐cobalt (Pt‐Co)], phenols, tannins and lignin, the leaching patterns differed among species, and oak was the species with the highest released values.
In: Waste management: international journal of integrated waste management, science and technology, Volume 33, Issue 11, p. 2296-2306
ISSN: 1879-2456
In: Environmental science and pollution research: ESPR, Volume 21, Issue 1, p. 268-298
ISSN: 1614-7499
In: Waste management: international journal of integrated waste management, science and technology, Volume 106, p. 213-225
ISSN: 1879-2456
For the next century to come, one of the biggest challenges is to provide the mankind with relevant and sufficient resources. Recovery of secondary resources plays a significant role. Industrial processes developed to regain minerals for commodity production in a circular economy become ever more important in the European Union and worldwide. Landfill mining (LFM) constitutes an important technological toolset of processes that regain resources and redistribute them with an accompanying reduction of hazardous influence of environmental contamination and other threats for human health hidden in former dump sites and landfills. This review paper is devoted to LFM problems, historical development and driving paradigms of LFM from 'classical hunting for valuables' to 'perspective in ecosystem revitalization'. The main goal is to provide a description of historical experience and link it to more advanced concept of a circular economy. The challenge is to adapt the existing knowledge to make decisions in accordance with both, economic feasibility and ecosystems revitalization aspects. (C) 2016 Elsevier B.V. All rights reserved.
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