The title compound, bis-[2,2'-dimethyl-3,3'-(butane-1,4-di-yl)diimidazol-1-ium] β-octa-molybdate(VI), (C(12)H(20)N(4))(2)[Mo(8)O(26)], was produced by hydro-thermal reaction of an acidified aqueous solution of Na(2)MoO(4) and 1,4-bis-(2-methyl-1H-imidazol-1-yl)butane (hereafter L). The structure of the title compound consists of the β-octa-molybdate anions having a center of symmetry, and proto...

the problem of removing pollutants from water is an important process and is becoming moreimportant with the increasing of industrial activities. one of the most important environmental problems iswater resources pollution by heavy metals. bioabsorbtion is affordable adsorbents for the removal of heavymetals from aqueous solutions. this study explores the adsorption potential of cr (vi), cd (ii...

gooseberry seed (phyllanthus acidus) was used as an adsorbent to determine its feasibility for the removal of cr(vi). various parameters such as ph, temperature, contact time, initial metal concentration and adsorbent dosage were investigated to determine the biosorption performance. equilibrium was attained within 60 minutes and maximum removal of 96% was achieved under the optimum conditions ...

abstract aims: the application of photocatalytic processes to remove heavy metals in aqueous solutions and industrial wastewater are regarded as extremely effective, clean and without producing waste methods. the goal of the present study was to investigate the photocatalytic activity of zno based on h-zsm-5 zeolite support. materials & methods: zno/h-zsm-5 composite synthesized by impregnation...

Definition 2.1. Fix integers d and r. A limit (linear) series on X of degree d and rank r is a collection consisting of an invertible sheaf L on X of degree d on Y and degree 0 on Z, and vector subspaces Vi ⊆ Γ(X,L) of dimension r + 1, for each i = 0, . . . , d, such that φ(Vi) ⊆ Vi+1 and φi(Vi+1) ⊆ Vi for each i. Given a limit series (L, V0, . . . , Vd), we denote by V Y,0 i the subspace of Vi...