Evaluation of biodegrability of tanned leathers treated with biocide

Year 2017, Issue: Issue 1(2) - 3. INTERNATIONAL BIOCIDAL CONGRESS, 46 - 46, 01.02.2017

İhsan Yaşa Ahmet Aslan Bahri Başaran

Abstract

Aim:
Biodegradability is a process for disposition to disintegrate as the result of
natural processes. The determination of biodegradability would provide some
information about persistancies for example millions tones of leather
especially shoes used every year and wasted every year and also would give rise
to possibilities utilization of those wastes as by-products. Although leather
is a biological and best comfortable material for human body, as a result of
tanning procedure it would become so durable that it’s normal life needs to
keep on. Usage of biocidal in leather production has increased a lot in recent
years. Herein the question is how much durability should necessarily be
executed and should the durability turn to persistency during usage of biocide.
From this viewpoint biodegradability is to assess tanning quality and effect of
biocide, enough or far beyond, and to evaluate its lifecycle in the
environment, easily decomposable or traceble for many years. Methods:
Biodegradability tests, as a reference being developed for leathers, is based
on the determination of generated CO2 titrimetrically. In this study, in
addition to the generation rates of CO2 assessed by titration of leather
samples with and without commercial biocides prepared according to ISO/DIS
20136 final draft standard biodegradability were attributed to DHA
measurements. Results: DHA test one of the fastest and reliable standard method
for determination of total metabolic activity were compared by effect of
biocides used leather tanning on its biodegrability. Conclusion: In conclusion
this study proved that DHA measurements for the biodegradibility observations
is appropriate as compared to the biodegradability tests based on the rates of
CO2 occurrences.

 

Keywords: Biocide, biodegradability, leather, CO2, DHA
measurement

 

Keywords

Evaluation of biodegrability of tanned leathers treated with biocide

References

• İhsan Yaşa, Ahmet Aslan, Bahri Başaran Ege University, Fundamental and Industrial Microbiology Division, Biology Department, Faculty of Science , Ege University, Department of Leather Engineering, Faculty of Engineering