Efficient removal of atrazine in wastewater by washed peanut shells biochar: Adsorption behavior and biodegradation

IF 3.7 3区生物学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY

Process Biochemistry Pub Date : 2025-04-08 DOI:10.1016/j.procbio.2025.04.008

Yidan Wang , Yuhang Chen , Lianying Wang , Yayuan Mo , Xiangfeng Lin , Shu Gao , Menglin Chen

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引用次数: 0

Abstract

Peanut shell powder was washed with water and then calcined to produce biochar, which acted as an adsorbent and biofilm supporter for the removal of atrazine (ATR). Biochar sample prepared by washing 6 h (named BC-W) achieved the highest biodegradation amount (Q_m, 12.48 mg/g). The adsorption process of ATR on BC-W involved hydrogen bonding and π-π interactions. We found that the removal rate of ATR by biodegradation was 6.34–6.75 times that of adsorption, with an ATR concentration of 30 mg/L under half aeration. The results of high-throughput sequencing showed that there were two dominant bacterial phyla in the BC-W samples after biofilm culture: Firmicutes (51.89 %) and Proteobacteria (47.79 %), among which Bacillus, Clostridium (sensu stricto), and Pseudomonas, played a major role in the biodegradation of ATR. These findings showed that biochar could be employed as a low-cost adsorbent for the removal of pesticides from wastewater, also a biofilm supporter for enhanced biodegradation of organic pollutants.

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来源期刊

Process Biochemistry 生物-工程：化工

CiteScore

8.30

自引率

4.50%

发文量

374

审稿时长

53 days

期刊介绍： Process Biochemistry is an application-orientated research journal devoted to reporting advances with originality and novelty, in the science and technology of the processes involving bioactive molecules and living organisms. These processes concern the production of useful metabolites or materials, or the removal of toxic compounds using tools and methods of current biology and engineering. Its main areas of interest include novel bioprocesses and enabling technologies (such as nanobiotechnology, tissue engineering, directed evolution, metabolic engineering, systems biology, and synthetic biology) applicable in food (nutraceutical), healthcare (medical, pharmaceutical, cosmetic), energy (biofuels), environmental, and biorefinery industries and their underlying biological and engineering principles.