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Abundant of estrogens is excreted via human urine, bringing the risk of micro-pollution during nutrients recovery from urine. This study investigated the characteristics of estrogens during the ammonification of urine, and then experiments were conducted to study the adsorption of estrogens on struvite, a potential product to recover nutrients from urine. The results showed that no 17a ethinylestradiol...
The adsorption performance of aminoalky cellulose (AmAC) for 2,4,6-trinitrotoluene (TNT) was investigated in a fixed bed column. The fixed bed column parameters such as bed height, flow rate, influent TNT concentration were studied by a series of dynamic adsorption experiments. The result showed AmAC was an effective adsorbent for removal of TNT, and the equilibrium uptake increased from 27.76 to...
Study on lead-containing wastewater treatment by constructed wetland with fly ash and slag as main matrix was performed. The adsorption mechanism of fly ash and slag was analyzed, and the influence of their dosages, adsorption time, pH and temperature on the effect of lead-containing wastewater disposal was studied. The optimum conditions of absorbing Pb2+ by fly ash or slag were obtained. Packing...
The performance of low-cost adsorbent such as raw rice husk (RRH) fixed bed column in removing Pb2+ from aqueous solution are studied in this work. Different column design parameters like bed height, flow rate and initial concentration are calculated. It is found that bed height, flow rate and initial concentration were important parameters for evaluating the efficiency of sorbents in continuous treatment...
The adsorption of Cu2+ from pharmaceutical wastewater by zeolite was studied in a batch adsorption system. Factors influencing copper adsorption such as pH (1-5), adsorbent dosage (5-50 g/L) and contact time (20-600 min) were investigated. The equilibrium of adsorption process was established in about 480 min, while pH was 5 and adsorbent dosage was 30 g/L. After the adsorption equilibrium was achieved,...
Adsorption of humic acid (HA) and Cu(II) onto cetyl pyridinium bromide (CPB) modified zeolite was investigated in single- and binary-adsorbate systems. The equilibrium adsorption data of HA and Cu(II) onto CPB modified zeolite in the single-adsorbate system were analyzed by the Langmuir and Freundlich isotherm models. The equilibrium adsorption data were well described by the Langmuir isotherm model,...
Washing coal usually brings about 0.2m3/t wastewater (in terms of closed circulation) due to transpiration, which provides an effective space for the recycle of coke-plant wastewater. The effluent from phenol-cyanogen wastewater biochemical disposal station is used as complementary water for washing coal, and Closed-Cycling System in coal preparation plant is introduced to make industrial experiment...
Cement-soil samples were made from composite cement (25%), red clay (75%) and proper amount of ultra-pure water. The samples were used to treat sewage water in the experiment of anaerobic reaction and aerobic reaction respectively. The raw sewage was collected from the inflow path of a wastewater treatment plan and it mainly consisted of domestic sewage. Results showed that the effect of ion exchange...
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