Table 3

Comparative clay characteristics and adsorption properties; ammoniacal-N and heavy metals from NaCl solution

SitepHNH4 (ml g−1)pHCd (ml g−1)Cu (ml g−1)Ni (ml g−1)Zn (ml g−1)
17.14 ± 0.092.5 ± 0.657.82 ± 0.012541 ± 356>906>10033651 ± 271
7.81–7.822232–28533511–4057
27.23 ± 0.04217.23 ± 0.041005 ± 90>737296 ± 81471 ± 403
7.20–7.257.20–7.25871–1051284–3001078–1962
27.40 ± 0.051.3 ± 0.87.47 ± 0.121396 ± 240>981496 ± 532692 ± 826
7.29–7.61855–1639390–5621723–3845
197.39 ± 0.032.9 ± 1.01054 ± 27>756573 ± 41>1724
1038–1085525–597
197.22 ± 0.172.3 ± 0.6959 ± 256>756573 ± 41>1724
772–1251525–597
37.46 ± 0.053.0 ± 0.61947 ± 152>757>863>1725
1799–2103
47.89 ± 0.037.89 ± 0.036294 ± 8>906>10033219 ± 340
7.87–7.917.87–7.916284–63032923–3518
57.75 ± 0.024.5 ± 0.398 ± 1.3>754194 ± 11>1721
96–99182–201
67.60 ± 0.015.3 ± 1.4215 ± 17>755246 ± 9>1722
199–232236–251
67.20117.65 ± 0.07789 ± 43>904669 ± 51>3740
7.60–7.70729–828623–715
66.40146.70 ± 0.03454 ± 37>903448 ± 351980 ± 226
6.68–6.72426–507409–4941686–2239
67.206.57.52 ± 0.03662 ± 115>901731 ± 127>3732
7.50–7.54504–749621–842
76.91 ± 0.03116.91 ± 0.03113 ± 26>980156 ± 35615 ± 155
6.88–6.956.88–6.9587–152119–205427–896
86.88 ± 0.125.26.88 ± 0.1253 ± 13>98294 ± 25307 ± 86
6.75–7.026.75–7.0239–6770–118211–405
96.04 ± 0.035.7 ± 1.25.95 ± 0.09123 ± 20>982136 ± 9288 ± 35
5.83–6.02101–150124–151208–325
217.6 ± 0.031.83201018713912
1.05–2.58835–42982404–6127
107.02 ± 0.023.27.02 ± 0.02306 ± 10>782370 ± 411432 ± 262
7.00–7.037.00–7.03291–312318–4151076–1633
117.87 ± 0.041.2 ± 0.87.50 ± 0.03838 ± 64>783672 ± 993283 ± 1170
7.48–7.52742–872536–7462453–4935
124.03 ± 0.031.0 ± 0.24.18 ± 0.184.2 ± 323 ± 19 ± 0.510 ± 2
4.01–4.340–920–258–108–13
120.4 ± 0.120 ± 110 ± 0.310 ± 0.2
0.3–0.519–229–109–10
204.64 ± 0.051.5 ± 0.64.77 ± 0.199 ± 254 ± 817 ± 115 ± 3
4.60–4.956–1340–6215–1811–20
206.91 ± 0.091.6 ± 0.328 ± 2>75638 ± 243 ± 1
26–2936–4041–44
137.077.0111134477
4.3–7.097–141117–157329–594
136.356.310287470
5.6–7.00.3–8.35.6–7.033–23144–137105–1187
147.82 ± 0.046.9 ± 1.17.60 ± 0.011404 ± 133>784>863>4948
7.59–7.601319–1675
157.09 ± 0.024.77.09 ± 0.02137 ± 14>784204 ± 221412 ± 174
7.07–7.107.07–7.10117–150175–2231219–1642
218.11 ± 0.027.08195024967446
1.3–37.71758–20736210–8527
177.29 ± 0.052.7 ± 0.67.40 ± 0.00411 ± 14>906673 ± 743366 ± 302
398–426584–7352913–3525
211602603971225
135.19 ± 0.063.35.19 ± 0.0656 ± 2<78298 ± 2125 ± 0
5.14–5.235.14–5.2354–5996–101
187.106.27.71 ± 0.061197 ± 188>902>976
7.66–7.751019–1449
187.304.17.82 ± 0.07932 ± 42>904844 ± 150
7.77–7.87901–992713–970
186.702.87.32 ± 0.042395 ± 234>903>976
7.29–7.352135–2683
  • Results are shown as mean and standard deviation above minimum to maximum range determined.