Characteristics of metal removal using carboxylated alginic acid.


Carboxylated alginic acid prepared through oxidation reaction with potassium permanganate had a high uptake capacity of 3.1 mmol/g dry mass at pH 4 and showed higher affinity to heavy metals compared to alkaline metals (Ca2+, Mg2+) in mixed metal system. The pHzpc value of the carboxylated alginic acid was 2.31, which was lower than pHzpc (2.83) of natural… (More)