Abstract
The excessive use of antibiotics in mariculture have resulted in high pollution burdens of antibiotics in marine environment. Biochars, as promising adsorbents, have been widely used in organic pollutant adsorption because of their good adsorption performance and stability. However, adsorption characteristic of antibiotics in seawater by biochar is not well known. Thus, the batch experiment for the adsorption of sulfamethoxazole (SMX) was conducted using wheat straw-derived biochars and graphite (GR) under different initial concentration of SMX and different addition of adsorbent in seawater. The results showed that the wheat straw-derived biochars produced at 700 °C was the optimal adsorbent with the maximum removal rate (R) of 70.3%, the maximum adsorption capacity (Qe) of 1.03 mg g-1 and the maximum adsorption coefficient (Kd) of 0.182 L g-1. The Qe values increased with increasing the initial concentration of SMX, while R and Kd values of SMX decreased. The R values of SMX increased with the increasing dosage of adsorbents, while Qe and Kd values of SMX decreased. These findings will shed new light on the environmentally-friendly and low-cost adsorbent for controlling the antibiotic pollution in marine environment.
Highlights
The rapid development of mariculture industry has met the growing demand for animal protein in domestic and foreign markets and is an important part of the national food security strategy
Antibiotics have been widely used in mariculture in order to prevent and control bacterial diseases and promote animal growth [1]
Overuse of antibiotics could lead to the persistence of antibiotics in environment
Summary
The rapid development of mariculture industry has met the growing demand for animal protein in domestic and foreign markets and is an important part of the national food security strategy. Antibiotics have been widely used in mariculture in order to prevent and control bacterial diseases and promote animal growth [1]. Due to the lack of fully understanding of disease prevention and control by fish farmers, the excessive use and even abuse of antibiotics is very serious. Overuse of antibiotics could lead to the persistence of antibiotics in environment. The persistent occurrence of residual antibiotics could pose a threat to non-target organisms [2], induce antibiotic resistance genes [3]. Measures to control antibiotic contamination in marine environment are urgently needed
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
