The novel use of calcium sulphate dihydrate as a bleaching agent for pre-processing beef tallow in the soap manufacturing process

D. P. Chakawa, M. Nkala, N. Hlabangana, E. Muzenda

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

In this article we investigate the use of CaSO4.2H2O as an effective bleaching agent for pre-processing of beef tallow destined for use in the soap manufacturing process before storage. The use of CaSO4.2H2O in this particular novel application has never been demonstrated before. Five respective 100 g beef tallow samples were bleached by agitation using a speed of 120 rpm for 30 minutes at different CaSO4.2H2O weight fractions. The different weight fractions used were 1, 2, 3, 5 and 10 wt. %. After bleaching at a constant melt temperature of 90°C, the respective slurries were filtered and analyzed for red and yellow colors respectively as well as for % ffa. The results indicated an increase in red color bleachability from 0 to 68.75 wt. % with an increase in wt. % CaSO4.2H2O from 1 to 10wt%. Yellow color bleachability also increased from 23.65 to 93 % with increase in wt. % of CaSO4.2H2O from 1 to 10 wt. %. The results demonstrate that CaSO4.2H2O is an effective beef tallow bleaching agent for adsorbing red color, brown color and yellow chlorophyll type contaminants that are present in beef tallow.

Original languageEnglish
Pages (from-to)911-916
Number of pages6
JournalProcedia Manufacturing
Volume35
DOIs
Publication statusPublished - 2019
Externally publishedYes
Event2nd International Conference on Sustainable Materials Processing and Manufacturing, SMPM 2019 - Sun City, South Africa
Duration: Mar 8 2019Mar 10 2019

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering
  • Artificial Intelligence

Fingerprint Dive into the research topics of 'The novel use of calcium sulphate dihydrate as a bleaching agent for pre-processing beef tallow in the soap manufacturing process'. Together they form a unique fingerprint.

  • Cite this