Immobilization of Phosphorus-Dissolving Bacteria on Sawdusts for Removing Phosphorus in Iron Ores

Abstract

Nowadays, the immobilization of At.t is a research potential. The immobilization of At.t on the sawdust filler was discussed in this paper. The experimental results indicated that sawdusts, as the immobilization fillers, can provide a stable living microenvironment for At.t showing the favorable bioactivity and strong acid-producing capacity. Also, under the optimal conditions with the inoculums concentration 12.5%, sulphur dosage 1% (w/v), dissolved oxygen (DO) in the bioreactor above 6 mg/l, the conductivity, pH, and H+ in the bioreactor were 45.2 ms/cm，0.964, and 0.109 mol/l，respectively. In the leaching ore experiment within 24 hours, bacteria effect of phosphorus removal was unconspicuous.

Study on Seismic Performance and Damage Analysis of Steel Plate Shear Wall with Partially Encased Composite (PEC) Columns

“…As the enanbling element for the active sensing method [57][58][59] and the dance (EMI) method [60,61], PZT transducers are often used in structural M) systems [62][63][64][65][66]. With the recent development of PZT based smart structure damage detection [67][68][69][70][71] and the application of PZT transducers in teel-concrete composite structures [72][73][74][75], the authors will explore health e detection of steel plate shear wall with PEC Columns using the embeddable ] and the easy-to-install surface-bonded piezoceramic patch transducers [78] Analyses ment Curve ed back of loading points of the lateral loading device in the loading process h MTS. The relationship between the counterforce and the displacement was ysteretic loops at the loading point of the steel plate shear wall with PEC igure 8. of the test loading, the counter-force and displacement were basically linear, loop was small, the stiffness of specimen was larger, and the energy At this time, the test piece was in the elastic stage, and the infill steel plate inge frame.…”