Abstract

Three Anaerobic Baffled Reactors (ABRs) are used to evaluate the extent of scale effects of cyanide inhibition of cassava wastewater treatment. The reactors (physical models) have aspect ratios of (53:16:30; 4:1:1; 10:3:6).

Highlights

  • Cassava (Manihot esculenta crantz, known as manioc or yucca) is one of the leading food and feed plants in the world: it ranks fourth among staple crops with a global production of about 160 milllion tons per year [1]

  • Cassava in the fresh form contains cyanide which is extremely toxic to humans and animals and needs to be processed to reduce the cyanide content to safe level [6]

  • The wastewater from cassava processing or its derivative ends up with domestic sewage if processed in small quantities while others end up being carried with industrial wastes if processed in large industrial quantities

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Summary

Introduction

Cassava (Manihot esculenta crantz, known as manioc or yucca) is one of the leading food and feed plants in the world: it ranks fourth among staple crops with a global production of about 160 milllion tons per year [1]. Most of these are grown in three regions, West Africa, and the Congo basin, tropical South America, and South East Asia [2], while in Western countries it is not commonly used, because of the presence of cyanoglucosides (linamarin and lotaustralin).

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