Mercury is a toxic heavy metal encountered in a variety of industrial sectors such as coal combustion, oil and gas refining, and artisanal and small-scale gold mining. 1, 2 Mercury pollution in aquatic systems is especially problematic, as it can contaminate the food supply through bioaccumulation in seafood, or lead to contaminated drinking water. Mercury remediation technologies for purifying water are therefore important, but this is challenging because of the high rate of mercury uptake required for filtration applications. High throughput is also important where large volumes of water need to be treated. To meet this need, a number of sorbent technologies have been evaluated including activated carbon, biochar, zeolites, polymers, metal covalent frameworks, and many other nanostructured or functionalised materials. Among the many classes of mercury sorbents, those functionalised with sulfur are of particular interest due to the strong affinity of sulfur for mercury. It is perhaps not surprising that there have been many studies on sulfur-functionalised sorbents for mercury remediation. Among these materials, those sorbents made directly from sulfur are of particular interest, due to the low cost and industrial surplus of elemental sulfur. Additionally, there has been a resurgence in methods to make polymers from sulfur, which has created many opportunities for using these low-cost and scalable polymers in mercury and heavy metal remediation. In this study, we investigated one of these sulfur polymers made by direct copolymerisation of elemental sulfur with the renewable terpene limonene. Our lab first reported the synthesis and use of this material in mercury remediation in 2015, describing its advantageous features. For instance, both sulfur and limonene are low-cost, highly abundant feedstocks produced by the petroleum and citrus industries, respectively. The copolymer made from these building blocks-referred to here as poly(S-r-limonene)-is a low molecular weight oligomer that is fully soluble in organic solvents. This solubility is useful, for instance, in using the polymer to coat surfaces. Additionally, at high concentrations of inorganic mercury, the polymer changes colour from red to yellow-a chromogenic response with potential use in mercury sensing or for filtration media that changes colour when it needs to be replaced. Building upon these foundational studies, the Hasell lab expanded access to this polymer and its utility in mercury remediation. For instance, the addition of an accelerator or catalyst in the synthesis allowed the material to be made at a lower temperature, which reduced by-product formation and increased the safety profile of the synthesis. Furthermore, Hasell also demonstrated that poly(S-r-limonene), when coated on a silica gel support, is effective at removing mercury from water. However, these studies were focused more on the poly(S-rlimonene) synthesis rather than mercury sorption, so there is a need to understand the detailed kinetics of mercury sorption and the scope of conditions under which it is effective. Herein, we report our findings on the first detailed kinetic analysis and modelling of this sorbent in both Hg 2+ uptake and desorption. We also studied the influence of pH and sodium chloride concentrations on mercury sorption, which provided an increased understanding of the scope and limitations of this sorbent. These findings helped establish important guidelines for deploying this unique mercury sorbent in remediation.