Case story database

Search for Successfully Implemented Alternatives

You can use the free text search function to find information in the case story database. Most suitable are: substance name and other substance identifier (EC- and CAS-number). You can refine your search after first entry for sector-, function- and process-categories. The case studies are meant to serve as source of inspiration and ideas for substitution. The alternatives are constantly being developed further. We therefore recommend that you to check in each individual case whether an alternative is suitable for your applications and purposes. If you are aware of any other relevant information that is not mentioned in the current case story, please contact SUBSPORTplus.

In order to utilize information in the best way, please take note of the SUBSPORTplus methodology on case stories!

*For a more precise search, use quotation marks ("example").

search

You can select one or more filters.

Results 1 to 10 of a total of 27 for search term

Search results

Verzicht auf Trichlorethylen in der Metallteileherstellung

Die Firma fertigt Metallteile mit Hochpräzisionsschnitt. Die Fertigung schließt den Gebrauch von Kühlschmierstoffen ein, die den Schneideprozess und das anschließende Trimmen der Teile ermöglichen. Die getrimmten Metallteile werden mit Trichlorethylen gewaschen/ entfettet. Die Firma hat das zur Reinigung am Ende eines jeden Trimmvorgangs angewandte Trichlorethylen durch eine wasserbasierte Reinigunsanlage ersetzt.

Removal of trichloroethylene in the manufacture of metal parts

The company produces metal parts by high precision cutting. Manufacturing includes the use of cutting fluids as coolants and lubricants that facilitate the process and the subsequent trimming of parts. Metal parts were then washed / degreased with trichloroethylene. The company installed a water-based cleaning machine to substitute trichloroethylene at the end of each trimming process.

Different ways to phase out halocarbons like dichloromethane in various applications.

This document describes how a large portion of the halocarbons used and manufactured in Sweden were phased out during the late 1980´s and early 1990´s. Several specific examples are mentioned concerning what chemicals were substituted and what the alternatives were. The chemicals discussed are mainly: dichloromethane, trichloroethylene, 1,1,2-Dichloro-1,2,2-trifluoroethane and 1,1,1-trichloroethane.

Substitution of sulphuric acid with hydrochloric acid for degreasing metal before zinc and chromium plating.

Metallic coating on metal parts is often performed by galvanic processes. To achieve good-looking surfaces of good quality it is necessary to first clean the items. Earlier the company used sulphuric acid for pickling. The acid was heated and therefore some of it evaporated from the tank. By substituting sulphuric acid with hydrochloric acid pickling not only became more efficient, moreover, hydrochloric acid does not need to be heated.

Galvanic processes with acid zinc instead of cyanide zinc.

An electroplating company in Denmark made changes in the production process for galvanising. They substituted zinc cyanide by zinc chloride.

Surface treatment of metals and plastic

This document describes the best available techniques for surface treatment of metals and plastics. Substitution possibilities for EDTA, PFOS, zinc cyanide, copper cyanide and hexavalent chromium are mentioned.

Alternative to thorium oxide in welding rods

Thorium dioxide is used in electric welding as additive to tungsten refractive rods. One of thorium isotopes is hazardous, because is radioactive, therefore alternatives were sought.

Vegetable oil esters used in cleaning of small parts from metal repair work

A shipbuilding company located in Germany substituted hydrocarbon solvents with esters based on coconut oils. The esters are used for cleaning of small items like bearings, casings or bolts from repair work and maintenance in a ship yard.

Sprühnebelunterdrückung bei der Hartverchromung mit Hilfe von nicht auf PFOS (Perfluoroctansulfonat) basierenden Tensiden

Das dänische Amt für Umweltschutz und einige dänische Unternehmen haben ein Projekt zur Substitution von polyfluorierten (PFOS) Tensiden zur Verwendung für nicht dekoratives Hartverchromen durchgeführt. Ergebnisse auf Laborebene und größerer industrieller Ebene haben gezeigt, dass es möglich ist, die PFOS als Mittel zur Sprühnebelunterdrückung in der nicht-dekorativen Hartverchromung zu substituieren.

Mist suppression with non-PFOS (perfluoro octane sulfonate) surfactants for hard chrome plating

The Danish EPA and some Danish companies carried out a project on substitution of polyfluorinated (PFOS) surfactants for use in non-decorative hard chrome plating. Experiments on both laboratory scale and larger industrial scale have shown that it is possible to substitute PFOS as mist suppressant in the non-decorative hard chrome plating process.

Also of interest

Evaluation, selection and criteria for creating the case stories

Do you have useful information on substitution, which is missing in our portal? Please contact us.

Your Contribution

Navigation and service