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Article
Publication date: 1 June 1994

Accumulation of Metals by Vascular Plants

Hussein I. Abdel‐Shafy, Werner Hegemann and Andrea Teiner

Describes a study carried out to evaluate the accumulation of heavymetals by two different vascular aquatic plants in the artificialwetlands which were constructed for the…

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Abstract

Describes a study carried out to evaluate the accumulation of heavy metals by two different vascular aquatic plants in the artificial wetlands which were constructed for the treatment of municipal wastewater in Berlin, Germany. The studied plants were Pharagmites australis and Schoenoplectus lacustris. The investigated metals were: Zn, Cr, Cu, Fe, Cd, Ni and Pb. The translocation of such metals in the plant roots, stems and leaves was also determined. The level of metals in the influent and effluent of the wastewater, as well as the sludge, was investigated. The concentration factor of each metal by plants and sludge was further studied. Results revealed that P. australis has a higher tendency for the accumulation of metals than S. Lacustris. The level of metals was higher in roots, followed by leaves, then stems. Metals were more concentrated in the sludge than in the plants. Further study showed that the levels of metals in plants grown in the artificial wetlands were higher than in those grown in a “controlled” area. Concludes that vascular plants can act as scavengers of metals from the municipal wastewater while still maintaining a healthy status.

Details

Environmental Management and Health, vol. 5 no. 2
Type: Research Article
DOI: https://doi.org/10.1108/09566169410057137
ISSN: 0956-6163

Keywords

  • Heavy metals
  • Pollution
  • Waste

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Article
Publication date: 5 May 2015

The emergence of city logistics: the case of Copenhagen’s Citylogistik-kbh

Britta Gammelgaard

Many city logistics projects in Europe have failed. A better understanding of the complex organizational change processes in city logistics projects with many stakeholders…

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Abstract

Purpose

Many city logistics projects in Europe have failed. A better understanding of the complex organizational change processes in city logistics projects with many stakeholders may expand city logistics capabilities and thereby help prevent future failures. The purpose of this paper is therefore to increase understanding of how city logistics emerge, and secondarily, to investigate whether such processes can be managed at all.

Design/methodology/approach

A paradigm shift in urban planning creates new ways of involving stakeholders in new sustainability measures such as city logistics. Organizational change theory is applied to capture the social processes leading to emergence of city logistics. The methodology is a qualitative processual analysis of a single longitudinal case.

Findings

The change process took different forms over time. At the time of concluding the analysis, positive dialectic forces were at play. City logistics schemes are still in an innovation phase. The biggest challenge in managing a process toward city logistics is to convince the many public and private stakeholders of their mutual interest and goals.

Research limitations/implications

Urban goods transport sustainability schemes take many forms, and city logistics is but one such form. Furthermore, the methodology of a single context specific case study does not make prediction possible.

Practical implications

Fewer city logistics projects may fail due to stakeholder participation.

Social implications

Fewer city logistics projects may fail. Thereby, cities become more environmentally and socially sustainable.

Originality/value

Insights into a city logistics project from a change management perspective has not previously been reported in literature.

Details

International Journal of Physical Distribution & Logistics Management, vol. 45 no. 4
Type: Research Article
DOI: https://doi.org/10.1108/IJPDLM-12-2014-0291
ISSN: 0960-0035

Keywords

  • Change management
  • Process analysis
  • Stakeholder involvement
  • City logistics
  • Longitudinal case study

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