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College of Resources and Environmental Science
South-Central University For Nationalities

ACADEMIC REPOER


Prof. Du’s paper was accepted for publication in Journal of Alloys and Compound

Prof. Du’s article entitled “Highly efficient removal of As(V) with modified electrolytic manganese residues (M-EMRs) as a novel adsorbent” was published in Journal of Alloys and Compound. Graduated studuent Jirong Lan and Yan Sun are the first authors of the article.


Abstract: In this research, electrolytic manganese residues (EMRs) modified by NaOH, ultrasonic etching and microwave-assisted heating treatment (called M-EMRs hereafter) were used as a novel adsorbent to remove Arsenic (V) [As(V)] from synthetic wastewater. Results showed that M-EMRs were of nanosheet structure in sizes of about 100-300 nm; the percentage of Fe and Mn on the surface of M-EMRs increased, and Fe and Mn existed in the forms of FeS, FeOOH, Fe3O4, and MnO2. The As(V) concentration in the liquid decreased from 50 to 0.038 mg/L. The maximum adsorption capacity of E-EMRs for As(V) was 23.96 mg/g. The presence of low concentration of salt such as NaCl, Na2CO3, Na2HPO4, and Na2SO4 showed limited inhibition on the adsorption of As(V). Moreover, M-EMRs could be regenerated with 3% NaOH solution and reused for 5 times. Preliminary analysis indicates the application potential of M-EMRs in As-contaminated industrial wastewater.

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Link of paper via https://www.sciencedirect.com/science/article/pii/S0925838819332190


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