Fig. 2From: Metal ion removal using a low-cost coconut shell activated carbon bioadsorbent in the recovery of lactic acid from the fermentation brothXPS analysis results showing 1. The wide-scan spectra of raw CSAC (A), 16-h grafted CMC-CSAC (C), 48-h grafted CMC-CSAC (E) and spent 16-h grafted CMC-CSAC (G); and 2. The narrow-scan spectra of raw CSAC (B), 16-h grafted CMC-CSAC (D), 48-h grafted CMC-CSAC (F), and spent 16-h grafted CMC-CSAC (H)Back to article page