Preparation and characterization of molybdenum disulfide - Sodium alginate/Antarctic krill protein composite fiber for dye adsorption

The dyeing and finishing industry inevitably produces a large amount of wastewater, and how to treat pollutants such as methylene blue (MB) in the wastewater is a huge challenge. In this paper, molybdenum disulfide (MoS2) after simple ultrasonic treatment was added to the sodium alginate/Antarctic krill protein composite fiber (SAF) as an additive, and the MoS2-sodium alginate/Antarctic krill protein composite fiber (MSAF) was successfully prepared, which was used as an adsorbent for MB. The results indicated that MSAF had an excellent adsorption effect on MB, the maximum adsorption capacity in the experiment could reach 472.68 mg/g, which was 27 % higher than that of SAF, and the theoretical adsorption capacity calculated by fitting could reach 934.58 mg/g. Moreover, the MSAF still has high adsorption efficiency after five adsorption-desorption cycles. Based on the data of the present investigation, MSAF can be used as an efficient and reliable adsorbent and is expected to be used as a functional textile fabric in the fields of filtration and treatment of textile printing and dyeing wastewater.