Structure-activity relationships of a novel coarse flocculant for organic carbon capture in municipal wastewater
Year: 2024
Type: article
Abstract: An innovative kind of coarse flocculant employs captured organics from wastewater as a raw material was proposed in our previous research, which is subsequently utilized to capture organics from wastewater in return. Coarse flocculants with different molecular weight, zeta potential and charge density were produced by adjusting modification condition. They were characterized through various methods, while the flocculation effect and structure-activity relationship of the coarse flocculant was also evaluated. The flocculation performance is primarily determined by the charge properties. The molecular weight significantly influences the adsorption-bridging and catching-sweeping effect, thereby affecting floc size and stability. The charge density has important impact on the colloidal particle instability, which in turn impacts floc size. The flocculation mechanisms were discussed based on the structure-activity relationship. Notably, when zeta potential ranges from 7 ± 0.02–9.5 ± 0.02 mV and charge density exceeds 1.35 ± 0.01 mmol·L −1 , the charge neutralization effect is maximized. Large floc particle helps enhance organic matter capturing. The results help to guide the development of the novel flocculant.
Authors: Xiao Zha, Yongrui Yu, Yong Huang
Institution: Suzhou University of Science and Technology
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,440
Award: G8618339232
OpenAlex ID: W4405940473