Table 4.: The systematic statistical analysis of the parameters of dissimilatory sulfate reduction depending on initial density of Desulfovibrio piger Vib-7 bacterial cells.

  Parameters 0.12±0.011 mg/ml
  Average   Variance Pooled Variance   t-statistics   P (T<=t) one-way   P (T<=t) two-way
  Biomass and Sulfate 1.0554±0.0959 0.6355±0.0578   0.9755±0.0887   -2.1939±0.1994   0.0243±0.002209   0.0487±0.004427
2.2136±0.2012 1.3154±0.1196
  Biomass and Lactate 1.0554±0.0959 0.6355±0.0578   12.8362±1.1669   -5.5955±0.5087   0.00005±0.000001   0.0001±0.000009
11.7711±1.0701 25.0369±2.2761
  Sulfate and Sulfide 2.2136±0.2012 1.3154±0.1196   1.1192±0.1017   2.0235±0.1840   0.0329±0.002991   0.0659±0.005991
1.0693±0.0972 0.9231±0.0839
  Sulfate and Acetate 2.2136±0.2012 1.3154±0.1196   15.0147±1.3650   -1.7612±0.1601   0.0518±0.004709   0.1036±0.009418
5.8614±0.5329 28.7140±2.6104
  Lactate and Acetate 11.7711±1.0701 25.0369±2.2761   26.8754±2.4432   2.1326±0.1939   0.0271±0.002464   0.0543±0.004936
5.8614±0.5329 28.7140±2.6104
  Lactate and Sulfide 11.7711±1.0701 25.0369±2.2761   12.9800±1.1800   -5.5572±0.5052   0.00005±0.000001   0.0001±0.000009
1.0693±0.0972 0.9231±0.0839
  Biomass and Sulfide 1.0554±0.0959 0.6355±0.0578   0.7793±0.0708   -0.0295±0.0027   0.4885±0.044409   0.9769±0.088809
1.0693±0.0972 0.9231±0.0839
  Biomass and Acetate 1.0554±0.0959 0.6355±0.0578   14.6748±1.3341   -2.3471±0.2134   0.0185±0.001682   0.0369±0.003355
5.8614±0.5329 28.7140±2.6104
  Lactate and Sulfate 11.7711±1.0701 25.0369±2.2761   13.1761±1.1978 -4.9259±-
0.4478
  0.0002±0.000018   0.0004±0.000036
2.2136±0.2012 1.3154±0.1196
  Acetate and Sulfide 5.8614±0.5329 28.7140±2.6104   14.8186±1.3471   -2.3290±0.2117   0.0191±0.001736   0.0381±0.003464
1.0693±0.0972 0.9231±0.0839
  Biomass and Sulfate 1.6657±0.1514 0.8127±0.0739   1.2149±0.1104   -0.1115±0.0101   0.4565±0.041500   0.9130±0.083000
1.7314±0.1574 1.6171±0.1470
  Biomass and Lactate 1.6657±0.1514 0.8127±0.0739   18.5288±1.6844   -3.2947±0.2995   0.0032±0.000291   0.0064±0.000582
9.2464±0.8406 36.2449±3.2950
  Sulfate and Sulfide 1.7314±0.1574 1.6171±0.1470   1.4101±0.1282   0.1981±0.0180   0.4232±0.038473   0.8463±0.076936
1.6057±0.1460 1.2031±0.1094
  Sulfate and Acetate 1.7314±0.1574 1.6171±0.1470   15.7132±1.4285   -2.8038±0.2549   0.0080±0.000727   0.0159±0.001445
7.6721±0.6975 29.8092±2.7099
  Lactate and Acetate 9.2464±0.8406 36.2449±3.2950   33.0271±3.0025   0.5125±0.0466   0.3088±0.028073   0.6176±0.056145
7.6721±0.6975 29.8092±2.7099
  Lactate and Sulfide 9.2464±0.8406 36.2449±3.2950   18.7240±1.7022   -3.3035±0.3003   0.0032±0.000291   0.0063±0.000573
1.6057±0.1460 1.2031±0.1094
  Biomass and Sulfide 1.6657±0.1514 0.8127±0.0739   1.0079±0.0916   0.1118±0.0102   0.4564±0.041491   0.9128±0.082982
1.6057±0.1460 1.2031±0.1094
  Biomass and Acetate 1.6657±0.1514 0.8127±0.0739   15.3110±1.3919   -2.8718±0.2611   0.0070±0.000636   0.0140±0.001273
7.6721±0.6975 29.8092±2.7099
  Lactate and Sulfate 9.2464±0.8406 36.2449±3.2950   18.9310±1.7210   -3.2313±0.2938   0.0036±0.000327   0.0072±0.000655
1.7314±01574 1.6171±0.1470
  Acetate and Sulfide 7.6721±0.6975 29.8092±2.7099   15.5061±1.4096   -2.8821±0.2620   0.0069±0.000627   0.0138±0.001255
1.6057±0.1460 1.2031±0.1094
  Biomass and Sulfate 2.7900±0.2536 1.3764±0.1251   1.5278±0.1389   2.5492±0.2317   0.0128±0.001164   0.0255±0.002318
1.1057±0.1005 1.6793±0.1527
  Biomass and Lactate 2.7900±0.2536 1.3764±0.1251   22.0498±2.0045   -1.2971±0.1179   0.1095±0.009955   0.2190±0.019909
6.0457±0.5496 42.7233±3.8839
  Sulfate and Sulfide 1.1057±0.1005 1.6793±0.1527   1.4892±0.1354   -1.5615±0.1420   0.0722±0.006564   0.1444±0.013127
2.1243±0.1931 1.2991±0.1181
  Sulfate and Acetate 1.1057±0.1005 1.6793±0.1527   18.4672±1.6788   -4.0039±0.3640   0.0009±0.000082   0.0017±0.000155
10.3029±0.9366 35.2552±3.2050
  Lactate and Acetate 6.0457±0.5496 42.7233±3.8839   38.9892±3.5445   -1.2755±0.1160   0.1131±0.010282   0.2263±0.020573
10.3029±0.9366 35.2552±3.2050
  Lactate and Sulfide 6.0457±0.5496 42.7233±3.8839   22.0112±2.0010   -1.5637±0.1422   0.0719±0.006536   0.1439±0.013082
2.1243±0.1931 1.2991±0.1181
  Biomass and Sulfide 2.7900±0.2536 1.3764±0.1251   1.3377±0.1216   1.0768±0.0979   0.1514±0.013764   0.3027±0.027518
2.1243±0.1931 1.2991±0.1181
  Biomass and Acetate 2.7900±0.2536 1.3764±0.1251   18.3158±1.6651   -3.2842±0.2986   0.0033±0.000300   0.0065±0.000591
10.3029±0.9366 35.2552±3.2050
  Lactate and Sulfate 6.0457±0.5496 42.7233±3.8839   22.2013±2.0183   -1.9614±0.1783   0.0367±0.003336   0.0734±0.006673
1.1057±0.1005 1.6793±0.1527
  Acetate and Sulfide 10.3029±0.9366 35.2552±3.2050   18.2771±1.6616   -3.5790±0.3254   0.0019±0.000173   0.0038±0.000345
2.1243±0.1931 1.2991±0.1181
  Biomass and Sulfate 5.1100±0.4645 3.8045±0.3459   2.7589±0.2508   4.9124±0.4466   0.0002±0.000018   0.0004±0.000036
0.7486±0.0681 1.7134±0.1558
  Biomass and Lactate 5.1100±0.4645 3.8045±0.3459   23.1217±2.1020   0.3196±0.0291   0.3774±0.034309   0.7548±0.068618
4.2886±0.3899 42.4390±3.8581
  Sulfate and Sulfide 0.7486±0.0681 1.7134±0.1558   1.4972±0.1361   -2.4769±0.2252   0.0146±0.001327   0.0291±0.002645
2.3686±0.2153 1.2810±0.1165
  Sulfate and Acetate 0.7486±0.0681 1.7134±0.1558   19.2582±1.7507   -4.8137±0.4376   0.0002±0.000018   0.0004±0.000036
12.0400±1.0945 36.8029±3.3457
  Lactate and Acetate 4.2886±0.3899 42.4390±3.8581   39.6209±3.6019   -2.3038±0.2094   0.0200±0.001714   0.0399±0.003627
12.0400±1.0945 36.8029±3.3457
  Lactate and Sulfide 4.2886±0.3899 42.4390±3.8581   21.8600±1.9873   -0.7683±0.0698   0.2286±0.020782   0.4572±0.041564
2.3686±0.2153 1.2810±0.1165
  Biomass and Sulfide 5.1100±0.4645 3.8045±0.3459   2.5427±0.2312   3.2163±0.2924   0.0037±0.000336   0.0074±0.000673
2.3686±0.2153 1.2810±0.1165
  Biomass and Acetate 5.1100±0.4645 3.8045±0.3459   20.3037±1.8458   -2.8773±0.2616   0.0070±0.000636   0.0139±0.001264
12.0400±1.0945 36.8029±3.3457
  Lactate and Sulfate 4.2886±0.3899 42.4390±3.8581   22.0762±2.0069   -1.4095±0.1281   0.0920±0.008364   0.1841±0.016736
0.7486±0.0681 1.7134±0.1558
  Acetate and Sulfide 12.0400±1.0945 36.8029±3.3457   19.0420±1.7311   -4.1464±0.3769   0.0007±0.000064   0.0014±0.000127
2.3686±0.2153 1.2810±0.1165

Comments: Observation is equal to 7; hypothetical mean difference is equal to 0; df is equal to 12; t critical one-way is equal to 1.7823±0.1620; t critical two-way is equal to 2.1788±0.1981. Statistical significance of the values are means M±m, n = 5