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The concentration of eighteen nutrients and heavy metals in E. crassipes collected from different sites in the North Zhejiang, China was concurrently studied. The concentration of the elements in whole plants was in the order of K (14896.92 μg g-1)>P (5775.78 μg g-1)>S (5596.38 μg g-1)>Ca (2368.92μg g-1)>Pb (2380.03 μg g-1)>Mn (852.90 μg g-1)>Fe (782.63 μg g-1) >Al (456.26 μg...
A new type of inorganic polymer flocculant, polysilicate boron ferric and zinc sulfate (PSBFZ), was prepared through reaction of sodium silicate, ferric sulfate, zinc sulfate and sodium tetraborate. The Optimal synthesis process and material mixture ratio were determined by Orthogonal and single-factor experiments. Experimental results demonstrated that the optimal preparation conditions were as follows:...
The paper investigated the treatment effect of modified rice husk as an adsorbent on wastewater containing Zn(II). Langmuir and Freundlich equations quantified the Zn(II) removal effect of modified rice husk. We analyzed characteristics of adsorption kinetics, the initial pH value, temperature effect on adsorption process, and compared with the regeneration efficiency of adsorbent. The results showed...
Twelve samples of surface sediment in Nanhu Lake, Wuhan city were collected and the concentrations of Organic Matter (OM), Total Nitrogen (TN), Total Phosphorus (TP), ammonia nitrogen (NH4+-N) and nitrate nitrogen (NO3--N) were determined; the average result were 6.58%, 3972, 1712, 897 and 20mg/kg separately. Cd, Hg, As, Cu, Pb, Cr and Zn were determined too; and the average value were 0.46, 0.140,...
Pickling waste liquor was added into electroplating wastewater as a raw material and NaOH was used as a precipitant. Reacting pH (pH 7-11), volume ratio of electroplating wastewater(V1) to pickling waste liquor (V2) (V1:V2=2:1-20:1), and reaction time (5-30min) were studied by microwave hydrothermal process to synthesize ferrite. Treatment effect was determined by analyzing supernatant with Inductively...
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