Fig. 6From: Metal ion removal using a low-cost coconut shell activated carbon bioadsorbent in the recovery of lactic acid from the fermentation brothEffect of contact time on A adsorption capacity of metal ions and lactic acid and B lactic acid purity and recovery in the solution after adsorption. The 16-h grafted CMC-CSAC (5Â g) was soaked in 50Â mL lactic acid fermentation broth (pH 6) at room temperature with varied contact timeBack to article page