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Reducing environmental emissions in tanneries
J W van Groenestijn1, J S A Langerwerf, M Lucas
1TNO Environment, Energy and Process Innovation, Apeldoorn, The Netherlands. J.W.vangroenestijn@mep.tno.nl
Summary
Chrome leather production creates significant waste. Implementing clean tanning technologies and complementary wastewater treatment, including anaerobic treatment for sulfide and energy recovery, is crucial for cleaner production.
Area of Science:
- Environmental Science
- Chemical Engineering
- Industrial Ecology
Background:
- Tanning, especially chrome leather production, exhibits inefficient raw material utilization and generates substantial polluted wastewater and solid waste.
- Current tanning processes contribute significantly to environmental pollution, necessitating improved waste management strategies.
Purpose of the Study:
- To highlight the importance of integrating clean production technologies with effective waste treatment in chrome leather manufacturing.
- To emphasize the role of anaerobic wastewater treatment in mitigating pollution and recovering valuable resources.
Main Methods:
- Review of existing clean tanning technologies and waste treatment processes.
- Analysis of anaerobic wastewater treatment for sulfide and sulfur recovery.
- Assessment of biogas production as an energy source from wastewater treatment.
Main Results:
- Clean tanning technologies can prevent a portion of emissions.
- Anaerobic wastewater treatment offers a viable method for recovering sulfides, sulfur, and energy (biogas).
- Designed complementarity between clean production and waste treatment is essential for integral clean chrome leather technology.
Conclusions:
- Integral clean chrome leather technology requires a synergistic approach combining cleaner production methods with advanced waste treatment.
- Anaerobic wastewater treatment is a key component for resource recovery and pollution reduction in the leather industry.
- Implementing these integrated strategies can lead to more sustainable and environmentally responsible chrome leather production.