Numerical Study of Sulfonamide Occurrence and Transport at the Near-Shore Area of Laizhou Bay

Abstract

Antibiotics are extensively applied in aquaculture for the treatment of microbial infections and to improve production. Among various antibiotics, sulfonamides (SA) are popular in fish farming, and SA residues in the aquatic environment have detrimental effects on both ecosystem and human health. Understanding the fate of SA in the aquatic environment is a basic necessity to provide an approach for solving the current problem. In this study, a two-dimensional lattice Boltzmann model was introduced to investigate the transport and occurrence of SA in Laizhou Bay, a prosperous aquaculture area in China. The model is based on the shallow-water equations and advection-diffusion equation with the Bhatnagaar–Gross–Krook scheme. Experimental data are used to verify the model after numerical simulations and the results illustrate the accuracy of the proposed model. This model provides a potential universal method for the simulation of the fate of antibiotics in the aquatic environment.

Techniques and Applications in Water Science and Engineering

“…In hydraulic systems, transient flow often occurs in pipelines and may interact with pipe structures [1,2]; aquatic vegetation widely occurs in surface water, affecting the flow field [3], and then further interfering with the water environment and aquatic biodiversity; and, due to climate change and rapid urbanization, extreme floods are becoming more frequent and intense, threatening human lives and causing significant damage to property [4]. An understanding of the water borne transport of emerging contaminants, such as plastic debris and antibiotics, is relevant to the remediation of rivers, lakes, and oceans [5,6]. Driven by natural and anthropogenic stressors, hydrological change is causing substantial impacts on hydro-ecology, affecting the morphological evolution of deltas [7] and decreasing the availability of ecological lake water in arid areas [8].…”

“…Addressing different water resources problems through hydraulic modelling [1][2][3][4], hydroenvironmental modelling [5,6], and hydro-ecological modelling [7,8], the papers in this Special Issue report on hydraulic mechanisms [1][2][3], modelling techniques [4][5][6], and natural effects [7,8]. Analytical and numerical tools are used to improve simulation calibration and validation [1][2][3][4][5][6] as well as future ecological modeling performance [7,8]. In this study, a computational fluid dynamics (CFD) method based on Fluent software was used to investigate cavitation flow in a pipeline.…”