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Sustainability

  • UNIDO Solar Water Heating - Ayuub Brothers, Hazaribagh, Dhaka, Bangladesh
  • UNIDO Solar Water Heating
  • UNIDO leather Screen - Hair saving liming technology

Sustainable and cleaner production technolgies is an efficient method of preventing or minimizing pollution caused by industrial activities. UNIDO continues to place an emphasis on the introduction of cleaner leather processing technology in developing countries. The primary task of all cleaner technologies is to reduce the amount pollution emissions; and where possible change the nature of pollution emissions to reduce the pressure and costs of end-of-pipe treatment. The expected results primarily include:

  • Lower water consumption – better preservation of rapidly diminishing water resources.
  • Lower total dissolved solids (TDS) content (including salinity) – lower risk of affecting the usability of the receiving water bodies for irrigation and livestock watering.
  • Avoidance of use in processing and/or presence in leather of substances from the Restricted Substances Lists (RSL) promulgated by national or regional legislation, leading (multinational) brands and/or ecolabel due to their proven negative impact on human health and eco-systems.               
  • Proportionally higher volume of solid wastes suitable for processing into saleable by-products.
  • Lower levels of BOD, COD and Nitrogen; their respective contents in conformity with local and widely prevailing legislative norms.
  • Low level of chromium in (C)ETP sludge – the scope for land application and/or composting.
  • Lower hazardous and/or unpleasant air emissions.
  • Appropriate occupational health and safety (OSH) standards – better work conditions, fewer accidents.

Hydrogen supplied gas present in tanneries and effluent treatment plants (ETPs) has proven fatal to workers exposed to it many times.

It is therefore necessary that the owners and managers of tanneries and effluent treatment plants are fully aware of the dangers posed by this poisonous gas and take all preventive and precautionary measures to protect the workforce from exposure to this gas. In the event of accidental exposure of a worker, they should know how to deal with the situation.

UNIDO’s activities in the leather processing has as one of its important objectives, improvement of occupational safety and health practices in tanneries and effluent treatment plants. Under this objective, the project has been seeking to demonstrate in selected tanneries improvement practices for better occupational health and safety of the workers.

It is hoped that the industry representatives and other concerned with the occupational health and safety of workers in tanneries and effluent treatment plants will find this publication useful.

UNIDO on-line learning How to deal with hydrogen sulphide gas

Confronted with increasing legal and social pressures, no tanner can afford the luxury of not being familiar with the main issues and principles of occupational, safety and health protection pertaining to tannery operations.

Hydrogen sulphide gas present in tanneries and effluent treatment plants has proven fatal to workers exposed to it many times.

See also Safety Video - How to deal with hydrogen sulhide gas

It is therefore necessary that the owners and managers of tanneries and effluent treatment plants are fully aware of the dangers posed by this poisonous gas and take all preventive and precautionary measures to protect the workforce from exposure to this gas. In the event of accidental exposure of a worker, they should know how to deal with the situation.

The lessons that follow are to help tanners, tannery managers and operators to acquaint themselves with the basic principles How to deal with hydrogen sulphide gas.

The on-line course developed by UNIDO including test provides an opportunity for the proper training within tanneries related to danger associated with hydrogen sulphide gas. After finishing the test with minimum score 80%, participants will receive the certificate and will be able to download it.

How to enrol into the UNIDO on-line course “ How to deal with hydrogen sulphide gas”?

Follow a link: https://learning.unido.org/course/view.php?id=42 

It is hoped that the certificate will be accepted also by Occupational Safety and Health Authorities as a proof that staff was properly trained.

Th report provides an overview of publications, standards and references for the calculation of the Product Carbon Footprint (PCF) of the product Finished Leather together with recommendations for harmonization and the main elements needed to define system boundaries. The inherent complexity and inadequate exactness of carbon footprint analyses contrasts with the need to communicate the results in a simple, clear and unambiguous way. The report was prepared for and presented by Mr. F. Brugnoli  in the 18th  UNIDO Leather Panel in Shanghai/China September/2012

International concern has increased over the years on Climate Change. The ten hottest years on record have all occurred since 1998. Out of the last 21 years 18 are among the 20 warmest years since 1880. Data and findings add weight to the common conclusion that the clear long-term trend is one of global warming. Most of the observed increase in global average temperature since the mid - 20th century is very likely due to the observed rise in anthropogenic greenhouse gas concentrations. Among these, particular attention is paid on CO2 (carbon dioxide). Latest estimates show that global CO2 emissions increased to 30,600 million tonnes in 2010. Industry and manufacturing contribute for 19% of all Greenhouse Gas Emissions. Interest has been developed in estimating the total amount of GHG produced during the various stages in the life cycle of products. The outcome of these calculations, are referred to as Product Carbon Footprints (PCFs). Currently, there is no single methodology and no agreement has been reached internationally on Leather PCF calculation methods.

Dissolving the hair substance in the course of liming and unhairing entails a high load of organic pollution in wastewater; as the environmental demands have grown acute, it has become necessary to further reduce wastewater pollution load as much as possible. Hair-save technology, using only chemicals traditionally applied in liming, is among simple and good options towards achieving that aim. Hair-save unhairing is far from being a general practice as yet, but in future the increase of environmental costs and external pressures might make it more attractive. In addition to process description, equipment requirements, the scope for utilization of hairs obtained as well as cost considerations are also provided.

For an easy reference older papers are also available.

The paper presents the results of the implementation of solar collectors in three Bangladeshi tanneries as well as of energy audit in four Bangladeshi tanneries to evaluate and improve their electrical performance.

It is well known that tanneries use high amounts of hot water and electricity, and today energy costs are raising very fast all over the world, with energy costs increasing their share in the costs of leather production. Other problem especially in developing countries are frequent power cuts and problems with energy supply. Tannery relocation planned in Bangladesh from Hazaribagh to new Tannery Estate Dhaka is an opportunity to implement measures to reduce energy consumption which should lead to reduced costs for production but also reduced GHG production. Therefore, within the Re-Tie-Bangladesh project (Reduction of Environmental Threats and Increase of Exportability of Bangladeshi Leather Products1) UNIDO has implemented two actions to reduce energy costs in Bangladeshi tanneries: use of solar energy - solar water heating and electrical performance improvement.

The Regulation of the European Union (EU) on Registration, Evaluation, Authorisation and Restriction of Chemicals, REACH entered into force on 1st June 2007. Its proclaimed aims were to ensure a higher level of protection of human health and the environment as well as free movement of substances, on their own, in preparations and in articles, while enhancing competitiveness and innovation.

This Regulation should also promote the development of alternative methods for the assessment of hazards of substances. REACH was also expected to streamline and improve the former legislative framework on chemicals in order to improve the protection of human health and the environment from the risks that can be posed by chemicals, especially by those listed as Substances of Very High Concern (SVHC) The purpose of this desk study was to give some background information and practical advice to the leather industry so as to maintain or establish business in the EU market.

 

This survey prepared and presented during the 17th UNIDO Leather Panel is a follow-up to Worldwide Study of the Leather and Leather Products Industry, which was the outcome of an exhaustive survey carried out by UNIDO in the 1970s. It is intended to assist the Organization in the formulation of future assistance programmes and in detecting areas where further study of various kinds may be useful. This report assesses the worldwide prospects of the leather and leather products industry in the coming decade. It examines the major underlying trends of recent years and how they are expected to evolve in the short to medium term. In its attempt to provide a thorough picture of the leather sector, the report covers its various aspects: the availability of raw material, the tanning industry, and the manufacture of footwear and other leather products. The basic intention is to help discern prevailing trends in global trade and to support efforts to design an effective role for organizations in the industrial development arena. The findings and forecasts published here are meant to be indicative rather than definitive and to form a basis for further surveys and studies. The need to compile this report arose out of the 16th session of the UNIDO Leather and Leather Products Industry Panel held in Brazil in May 2007. The panel recommended that UNIDO undertake a comprehensive study on the future development of the world leather and leather products industry, a study that would cover demand, technology, production, and trade. Consequently, the UNIDO study provides an analysis of the contemporary demand for leather products (footwear, leather goods, gloves, leather garments, sports goods, upholstery, etc.) vis-à-vis the availability of resources (raw hides and skins, manufacturing capacities, skilled labour, knowledge, support industries, and services). It also contains information on other important aspects of the leather industry: trade statistics, the geographic distribution of production, technology developments, physical infrastructure, environmental conditions, and social aspects involved in the production of leather.

This paper attempts to discuss the main, predominantly technical, issues with regard to benchmarking; it is intended to assist those who are willing to admit to the fact that despite all explanations and definitions available, they are not quite sure what it is all about and whether and how it could be applied in the tanning industry. The paper outlines "cock-pit" check lists for ten areas - components: 1. Tannery location, infrastructure 2. Production parameters 3. Cleaner technologies 4. Energy management and consumption 5. Quality assurance, reprocessing, delivery time, failures 6. Product development, strategies 7. Occupational safety and health at work, maintenance 8. Effluent treatment, solid waste, air emissions 9. Financial indicators 10. Human resources and staff welfare, CSR. Some typical production parameters are also provided.

 

 

This short paper presented during the 14th UNIDO Leather Panel in Zlin/Czech Republic reports on the general situation, issues and methodology adopted as well as practical experience in implementation of occupational safety and health standards (OSH)  at work in tanneries under UNIDO’s Regional Programme for Pollution Control in the Tanning Industry in South East Asia in late 90-ies involving .international and local experts. For a practical OSH manual see the document Occupational Safety and Health Aspects of Leather Manufacture.

What is future of the chrome tanning? What will be used as a tanning agent in horizont of 50 years? In this paper prepared in 1999 Mr. Frendrup analyzed possible trends and scenarios of leather manufacture. Many issues and predictions are still relevant, especially those concerning the recent EU regulations. For additional information see also IULTCS papers concerning chrome tanning http://www.iultcs.org/pdf/IUR-1_Chromiumandleatherresearch_Abalancedview...

 


 

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