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Table 10 Comparison of the adsorption capacities of Cu+2, Hg+2, Pb+2 and Cd+2 by DiGu-MC with other published adsorbents

From: Novel diaminoguanidine functionalized cellulose: synthesis, characterization, adsorption characteristics and application for ICP-AES determination of copper(II), mercury(II), lead(II) and cadmium(II) from aqueous solutions

Metal ion Adsorbent Adsorption capacity qe (mg g−1) References
Cu+2 DiGu-Modified cellulose 66 Present work
Cellulose modified with acrylic acid 17.2 [41]
Microfbrillated cellulose modified with aminopropyltriethoxysilane 3.150 [42]
Citric acid modified cellulose 24 [43]
Pristine nanocellulose 20 [44]
Cortex banana waste 36.0 [45]
Cationic wheat straw 33.5 [46]
Orange peels modified with HNo3 (0.1 M) 15.27 [47]
Activated carbons using hazelnut shell 58.27 [48]
Tobacco dust as a lignocellulosic source 36.0 [49]
Peanut shells, 25.39 [50]
Rice husk 30.0 [51]
Oil palm shell 1.75 [52]
Pomegranate peel 30.12 [53]
Hg+2 DiGu-Modified cellulose 55 Present work
Guanyl modified cellulose 48.0 [34]
Bamboo leaf powder as a cellulose source 27.11 [54]
Bacillus subtilis biomass 68.5 [55]
Eucalyptus bark 34.60 [56]
Allium sativum L. extract 0.6497 [57]
Silica gel modified with 2-(2-oxoethyl)hydrazine carbothioamide 37.5 3 [58]
Magnetic nanoparticles doped with 1,5-diphenylcarbazide 44 [59]
Pb+2 DiGu-Modified cellulose 70 Present work
S. bengalense extract modified with urea 12.65 [60]
Sorghum bicolor L. modified with thiourea 17.82 [61]
Pine cone powder modified with NaOH (0.01 M) 24.75 [62]
Oil palm shell 3.39 [52]
Cauliflower waste 47.63 [63]
Acrylic acid modified cellulose 55.9 [41]
Thiol- functionalized cotton as cellulosic biomass 10.78 [26]
Tobacco dust as a lignocellulosic source 39.6 [49]
Guanyl modified cellulose 52 [34]
Citric acid modified cellulose 83 [43]
Nano-TiO2 7.41 [64]
Cd+2 DiGu-Modified cellulose 41 Present work
Tobacco dust as a lignocellulosic residue 29.6 [49]
Guanyl modified cellulose 68 [34]
T. aestivum Urea 9.22 [65]
Rice husk modified with NaOH 20.24 [66]
Rice husk modified with NaHCO3 16.18 [66]
Orange peels modified with HNO3 (0.1 M) 13.7 [47]
Cellulose derived from corn stalk 21.37 [67]
Cellulose powder modified with acrylic acid 30.3 [41]
Cellulose extracted from juniper fiber and modified with NaOH 0.26 [68]
Microfbrillated cellulose modified with aminopropyltriethoxysilane 4.195 [42]
Treated olive stones 49.3 [69]
Rice husk modified with epichlohydrin 11.12 [66]