In three previous studies, it has been used the fruit of the tara tree (Cæsalpinia Spinosa) as a pre-tanning agent 1. This new tailored tara product will be able to facilitate the penetration of the tannin molecules ...

La industria de curtidos utiliza gran variedad de productos químicos en las diferentes etapas del proceso de curtición. Una parte de estos productos son absorbidos por las pieles, mientras que el resto pasan a las aguas ...

This study considers the fruit of the tara tree (Caesalpinia spinosa) as a sustainable source for tanning agents and proposes alternatives to the commercial mineral salts and vegetable extracts to comply with an increasing ...

The conventional unhairing process is one of the most pollutant steps in the leather tanning process, which usually involves great amounts of sulfides lime and soda ash, generating higher BOD and COD values in the wastewater. ...

The tanning industry uses some pollutant chemicals, which are hazardous and toxic. This paper proposes a modest research contribution to examine how to reduce or replace some of these products by less dangerous and less ...

A hide preservation method based on salt and formic or sulfuric acid has been developed. This method allows 74% salt savings compared to the salt consumption in the conventional salting system. Such savings would involve ...

This study concerns the implementation and improvement of a system that applies ultrasound technology in vegetable tanning, which is an eco-friendly tanning process. The system is versatile and requires no major modifications ...

The main aim of this study is to carry out a qualitative and semiquantitative analysis of tannin extracts as an alternative to the official analysis method ISO 14088 – IUC 32, so that a correlation between the two methods ...

This work describes the synthesis of new leather finishing acrylic resins. Four resins ware synthesized varying the concentration of ethyl acrylate, and metracrylic acid. Sodium lauryl sulphate was used as emulsifying ...