Abstract：
:Spent sulphite liquor (SSL) has been used for the production of lignosulphonates (LS), antioxidants and bio-based succinic acid. Solvent extraction of SSL with isopropanol led to the separation of approximately 80% of the total LS content, whereas the fermentations carried out using the pretreated SSL with isopropanol led to the production of around 19g/L of succinic acid by both Actinobacillus succinogenes and Basfia succiniciproducens. Fractionation of SSL via nanofiltration to separate the LS and solvent extraction using ethyl acetate to separate the phenolic compounds produced a detoxified sugar-rich stream that led to the production of 39g/L of succinic acid by B. succiniciproducens. This fractionation scheme resulted also in the production of 32.4g LS and 1.15g phenolic-rich extract per 100g of SSL. Both pretreatment schemes removed significant quantities of metals and heavy metals. This novel biorefinery concept could be integrated in acidic sulphite pulping mills.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Alexandri M,Papapostolou H,Komaitis M,Stragier L,Verstraete W,Danezis GP,Georgiou CA,Papanikolaou S,Koutinas AAdoi
10.1016/j.biortech.2016.03.162subject
Has Abstractpub_date
2016-08-01 00:00:00pages
504-513eissn
0960-8524issn
1873-2976pii
S0960-8524(16)30465-5journal_volume
214pub_type
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