Abstract：
:Cassava, the 5th most important staple crop, generates at least 600L of wastewater per ton of processed root. This residue, cassava processing wastewater (CPW) has a high chemical oxygen demand, that can reach 56 g/L, and has also high concentrations of several mineral nutrients. The cultivation of microalgae such as Chlorella, Spirulina and wild strains was evaluated in the last years in raw, minimally processed and partially digested CPW. Concentrations of 2-4 g/L of these microalgae, comparable to those obtained in synthetic media, could be reached. The BOD of the residue was reduced by up to 92%. This process can be integrated into cassava processing industries, if challenges such as the toxicity of the concentrated residue, bacterial contamination, and the isolation of robust strains are addressed. Because CPW carries about 11% of the crop energy, integrating biogas production and microalgal cultivation into the cassava processing chain is promising.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
de Carvalho JC,Borghetti IA,Cartas LC,Woiciechowski AL,Soccol VT,Soccol CRdoi
10.1016/j.biortech.2017.09.213subject
Has Abstractpub_date
2018-01-01 00:00:00pages
1165-1172eissn
0960-8524issn
1873-2976pii
S0960-8524(17)31794-7journal_volume
247pub_type
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