Alkaline hydrolysis applied to animal tissues treatment

• Type: Chapter or Part of a Book
• Date: 2015

Authors

Sílvia C. Pinho (Author) FEUP; Manuel Fonseca Almeida (Author) FEUP; Olga C Nunes (Author) FEUP

Indexing

Scopus - 1 Citation

Scientific classification

CORDIS: Technological sciences

FOS: Engineering and technology

Associated Projects

PTDC/SAU-SAP/114855/2009 - Hidrólise alcalina de resíduos hospitalares infecciosos

LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

Other information

Authenticus ID: P-00K-1KJ

Abstract (EN): In this study, the minimum temperature and NaOH concentration for the total destruction of animal tissues were determined using either pork or beef as surrogates. The alkaline hydrolysis trials were performed with 1 M and 2 M NaOH solutions at different temperatures and different hydrolysis times. The pork and beef showed a similar behavior when subjected to alkaline hydrolysis. The destruction of meat was faster than the bone. The meat was totally hydrolyzed above 90¿C in less than 60 minutes. The effluents obtained after alkaline treatment are hazardous due to their very high pH. Although with very high organic load, the effluents produced in alkaline hydrolysis were biodegradable after neutralization. Therefore, it may be acceptable to discharge the neutralized effluents in a domestic wastewater treatment plant. © 2015 Taylor & Francis Group, London.

Language: English

Type (Professor's evaluation): Scientific