1,918 research outputs found
Affaldssektoren er et afgørende kort i fremtidens energi-kabale
No full textI fremtiden vil affaldssektoren komme til at få en helt afgørendebetydning, skriver professor i miljøanalyser Henrik Wenzel og opfordrerbeslutningstagerne til at spille kortet rigtigt for at få kabalen til at gåop
Affaldssektoren er et afgørende kort i fremtidens energi-kabale
No full textI fremtiden vil affaldssektoren komme til at få en helt afgørendebetydning, skriver professor i miljøanalyser Henrik Wenzel og opfordrerbeslutningstagerne til at spille kortet rigtigt for at få kabalen til at gåop
Ulster Carpets - Cleaner Production option report
No full textA survey on options for saving water and energy was conducted at Ulster Carpets on 14th November 2002 by Henrik Wenzel from the Institute for Product Development in Denmark, and David Mercer from Enviros, South Africa. This report details observations made during this site visit and makes suggestions for improvement. The report is based on notes taken by Pat Foure during the course of the site visit. Some potential savings have been quantified based on information provided at the meeting
Union Spinning Mills - Cleaner Production option report
No full textIn October and November 2002 meetings were held between Union Spinning Mills and external consultants from the South African – Danish Cleaner Textile Production Project. Project participants from USM were: • From USM: Operations Director Johan Ferreira, Finishing Manager Anrico (Andrej) Kritzinger and dyehouse technologists Dennis Robertson and Barry Gatenby • From Pollution Research Group, Natal University, Durban: Mr. Zsig Schneider • From Institute for Product Development, Denmark: Mr. Henrik Wenzel This team of people collected information on recipes and flow schematics on the various wet treatment operations in the dyehouse, and water and energy balances were made to the extent data allowed. A number of options for saving water, energy and chemicals were identified. The potentials monetary savings and necessary investments were estimated, and a list of priority projects including milestone plans for their implementation was made. Saving potentials amounted to around 3.5 mill. R with an average pay-back of less than a year
Human toxicity as a criterion in the environmental assessment of products
No full textAs part of a life cycle assessment methodology methods are developed for the semiquantitative screening and for the quantitative assessment of potential contributions to toxicity towards human beings through exposure in the environment to emissions occurring during the life cycle of a product. The assessment proceeds through the steps of classification, characterization, normalization and valuation. In the classification step attention is focused on intrinsic toxicity, low biodegradability and potential for bioconcentration as properties that predicpose a substance for ecotoxicity. No concrete values are given but a semiquantitative screening method is proposed as tool for the classification. In the characterization the potential contribution to ecotoxicity from the compound is quantified in three compartments of the environment: Air, water, groundwater and soil. A characterization method is developed involving an analysis of the generic fate of the substance in the environment, its transfer efficiency to human beings and its potential effects. The fate analysis involves the passage of a wastewater treatment plant, redistribution through evaporation, deposition and biodegradation in the environment. The transfer efficiency is modelled in a standard scenario for indirect exposure of human beings through intake of fish, plants, meat and dairy products. The effect analysis consists in the determination of the highest oral dose or air concentration that is expected to cause no effects in human beings through a lifelong exposure. For all four compartments characterization factors are presented that express the toxicity potential of the substance in terms of a volume of the considered compartment. For normalization of the characterized emissions three different reference scenarios are suggested representing the situations of non exceedence of: ? The carrying capacity anywhere within Denmark or the European Union. ? The existing Danish political reduction targets for toxicity scaled to the year 2000 and applied to present Danish emissions. ? The presently occurring emissions within Denmark. The normalization references derived for each of these scenarios are presented as personal equivalents for citizens in the considered region. Valuation Applying the "distance to target principle to the present Danish political reduction targets for toxicity a weighting factor is derived to be used in the quantitative weighing of the potential contribution to toxicity against the potential contributions to other environmental effect types
Berg River Textiles - Cleaner Production Option Report
No full textIn October and November 2002 meetings were held between Berg River Textiles, Mr. Juan Laubscher, and external consultants from the South African – Danish Cleaner Textile Production Project, Mr. Zsig Schneider and Mr. Henrik Wenzel. This team of people collected information on recipes and flow schematics on the various wet treatment operations in the dyehouse, and water and energy balances were made to the extent data allowed. A number of options for saving water, energy and chemicals were identified. The potentials monetary savings and necessary investments were estimated, and a list of priority projects including milestone plans for their implementation was made. A saving potential of around 3 mill. R was identified with a pay-back period of around 0.2 years as average of the identified options. The company implemented a large number of the options right away
Deliverable 4.1 Homogeneous LCA methodology agreed by NEPTUNE and INNOWATECH
Get PDFIn order to do a life cycle assessment (LCA) of a waste water treatment technique, a system to handle the mapped inventory data and a life cycle impact assessment (LCIA) method/model is needed. Besides NEPTUNE, another EU-funded project has the same methodology need namely INNOWATECH (contract No. 036882) running in parallel with NEPTUNE but focusing on industrial waste water. With the aim of facilitating cooperation between the two projects a common LCA methodology framework has been worked out and is described in the following. This methodology work has been done as a joint effort between NEPTUNE WP4 and INNOWATECH WP4 represented by the WP4 lead partner IVL. The aim of the co-operation is to establish common methodologies and/or LCA models and/or tools in order to achieve a homogenous approach in INNOWATECH and NEPTUNE. Further, the aim is to facilitate possibilities of data exchange between the two projects and eventually normalise the final output. A coordination/working group with representatives from INNOWATECH (WP4) and NEPTUNE (WP4) has been set up. It consists of the following representatives from the two projects: NEPTUNE: Henrik Fred Larsen (DTU/IPU), Michael Hauschild (DTU), Henrik Wenzel (SDU). INNOWATECH: Mats Almemark (IVL), Christian Junestedt (IVL). In support of this work and as a starting point for especially NEPTUNE WP4, a review of existing LCA studies on waste water treatment technologies has been done by DTU and is included as an Appendix
Report on the Historic Ventilation system of the Palace of Westminster's River Front
No full textReport submitted to the Parliamentary Estate Division on 12 April 2014. It is based on extensive archival research undertaken by Dr. Henrik Schoenefeldt outline the design and development of the ventilation of the Houses of Parliament. The focus on the ventilation of the River Front, including the Committee Rooms. It includes historic plans, details, new drawings produced by the author to reconstruct the historic ventilation system
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Get PDFSmall GTPases of the Rab family not only regulate target recognition in membrane traffic but also control other cellular functions such as cytoskeletal transport and autophagy. Here we show that Rab26 is specifically associated with clusters of synaptic vesicles in neurites. Overexpression of active but not of GDP-preferring Rab26 enhances vesicle clustering, which is particularly conspicuous for the EGFP-tagged variant, resulting in a massive accumulation of synaptic vesicles in neuronal somata without altering the distribution of other organelles. Both endogenous and induced clusters co-localize with autophagy-related proteins such as Atg16L1, LC3B and Rab33B but not with other organelles. Furthermore, Atg16L1 appears to be a direct effector of Rab26 and binds Rab26 in its GTP-bound form, albeit only with low affinity. We propose that Rab26 selectively directs synaptic and secretory vesicles into preautophagosomal structures, suggesting the presence of a novel pathway for degradation of synaptic vesicles
Biogas upgrading and utilization: Current status and perspectives
Get PDFBiogas production is an established sustainable process for simultaneous generation of renewable energy and treatment of organic wastes. The increasing interest of utilizing biogas as substitute to natural gas or its exploitation as transport fuel opened new avenues in the development of biogas upgrading techniques. The present work is a critical review that summarizes state-of-the-art technologies for biogas upgrading and enhancement with particular attention to the emerging biological methanation processes. The review includes comprehensive description of the main principles of various biogas upgrading methodologies, scientific and technical outcomes related to their biomethanation efficiency, challenges that have to be addressed for further development and incentives and feasibility of the upgrading concepts
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