Classification | Agent name |
Organic compounds | Carboxymethylcellulose [9,37-39] |
Chitosan [40,41] | |
Guar gum [9,11,42-45] | |
Locust bean gum [40,41] | |
Gum arabic [46] | |
Sesbania gum [47] | |
Tragacanth gum [48] | |
Galactomannan [49] | |
Lignosulfonate [50-53] | |
Dextrin and modified starch [54,55] | |
Inorganic salts | Combination of ZnSO4 and Na2CO3 [56] |
Metal salts containing Al3+, Cr3+,Mg2+, Ca2+, etc. [10,51,55] | |
Water glass, sodium hexametaphosphate, etc. [57,58] |