Table 1 Preliminary attempts for determination of optimum ratio cellulose: thiourea.

From: Rare Earth Elements Removal from Water Using Natural Polymers

Eu Nd
Ci = 50 mg/L Ci = 50 mg/L
ratio cellulose:thiourea 1:0.05 1:0.1 1:0.2 ratio cellulose:thiourea 0.05:1 0.1:1 0.2:1
Q 10.4 10.3 10.6 q 11.6 11.6 11.7
  1. (Ci – initial concentration, q – adsorption capacaity).