Ultra-large adsorption capacity for tetracycline by defatted Schizochytrium limacinum residue biochar

IF 4.6 2区生物学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2025-03-20 DOI:10.1016/j.algal.2025.104011

Liqin Lin , Linjuan Ning , Shiping Chen , Baobei Wang , Huaqiang Zhuang , Xiaolian Jing , Qingbiao Li

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Abstract

Tetracycline (TC) is the one of the largest used antibiotics and its resulting water environment pollution has received widespread attention. In this paper, biochar was prepared by using the defatted Schizochytrium limacinum (microalgae) residue as raw material and KHCO₃ as activator, and its adsorption properties for TC were investigated. The results showed that KHCO₃-activation biochar possessed the developed hierarchical porous structure. The specific surface area was up to 2295.26 m²·g⁻¹, which was 409.6-fold higher than the pristine biochar. When the mass ratio of the pristine biochar to KHCO₃ was 1:1, the as-prepared biochar displayed the best adsorption performance for TC. The pseudo-second-order reaction kinetics can better describe the kinetic experiment results. The maximum adsorption capacity was 1357.5 mg·g⁻¹, which was more favorable than other biochar derived from agricultural waste reported previously. The adsorption capacity was stable under different solution conditions, suggesting that the microalgae residue-based biochar has a promising application foreground in wastewater treatment.

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来源期刊

Algal Research-Biomass Biofuels and Bioproducts BIOTECHNOLOGY & APPLIED MICROBIOLOGY-

CiteScore

9.40

自引率

7.80%

发文量

332

期刊介绍： Algal Research is an international phycology journal covering all areas of emerging technologies in algae biology, biomass production, cultivation, harvesting, extraction, bioproducts, biorefinery, engineering, and econometrics. Algae is defined to include cyanobacteria, microalgae, and protists and symbionts of interest in biotechnology. The journal publishes original research and reviews for the following scope: algal biology, including but not exclusive to: phylogeny, biodiversity, molecular traits, metabolic regulation, and genetic engineering, algal cultivation, e.g. phototrophic systems, heterotrophic systems, and mixotrophic systems, algal harvesting and extraction systems, biotechnology to convert algal biomass and components into biofuels and bioproducts, e.g., nutraceuticals, pharmaceuticals, animal feed, plastics, etc. algal products and their economic assessment