2.3 Adsorption experiment
The adsorption experiments of CR and MB solutions by HP-HKUST-1/PES membrane and HP-HKUST-1 powder is carried out by batch and continuous adsorption, as shown in Figure 2 . HKUST-1/PES membrane and HP-HKUST-1/PES membrane are used as adsorbents and fixed in the membrane module. In the batch adsorption, the adsorption liquid is stirred by a magnetic stirrer with constant speed. In continuous adsorption, the entire unit is connected by a flexible pipe to form a circulating system. The pre-prepared dye solution is forced to be fed into the membrane module fixed with membrane adsorber. The effective area of the membrane in the membrane module is 0.00047 m2.