Utilization of waste cooking oil and tallow for production of toilet “bath” soap

Tlamelo Maotsela, Gwiranai Danha, Edison Muzenda

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)


A green prospective based on the reuse of waste materials such as beef tallow and waste cooking vegetable oils to manufacture soap is presented. Beef tallow and waste cooking oils that is discarded as waste from households and restaurants after frying is reviewed for the production of toilet (bath) soap. The discarded oil is purified with a brine solution and bleached with Hydrogen Peroxide (H2O2.) Purified waste cooking oils and beef tallow is mixed with coconut oil commonly used oil in toilet soap manufacturing. The oils are normally mixed at different ratios for the preparation of toilet soap. The triglycerides in the vegetable oils and beef tallow are saponified with Sodium Hydroxide (NaOH) by hydrolysis. Cold process soap shows significant improvements in physical properties at different triglycerides ratios and storage time at room temperature. It could be recommended that discarded waste cooking vegetable oils can be used after purification and bleaching together with beef tallow that may be regarded as waste to produce toilet (bath) soaps.

Original languageEnglish
Pages (from-to)541-545
Number of pages5
JournalProcedia Manufacturing
Publication statusPublished - 2019
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


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