The compound p-Nitrophenol (p-NP) is widely recognized as a highly toxic nitro-aromatic substance that urgently requires emission control. Reducing p-NP to p-aminophenol (p-AP) not only decreases its toxicity and mineralization properties in nature but also provides a key raw material for the chemical and pharmaceutical industries. The study used coal fly ash (CFA) as a catalyst carrier for synthesizing the p-NP reduction catalyst. Using CFA as an alternative option not only reduces costs but also achieves the objective of treating waste with waste compared to utilizing commercial solid materials for synthesizing catalysts. By employing hydrochloric acid and sodium hydroxide pretreatment methods, the physicochemical properties of CFA are significantly improved, enhancing the dispersion of palladium (Pd) nanoparticles. The structural features of the prepared samples were characterized using various surface analysis techniques, and both intermittent and continuous modes were experimentally tested for the model catalytic reaction involving the sodium borohydride (NaBH4)-mediated reduction of p-NP. The results demonstrate that CFA has potential in wastewater treatment.
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Nazarbayev Univ, Sch Engn & Digital Sci, Dept Civil & Environm Engn, Nur Sultan 010000, Kazakhstan
Nazarbayev Univ, Green Energy & Environm & Lab, Natl Lab Astana, Nur Sultan 010000, KazakhstanNazarbayev Univ, Sch Engn & Digital Sci, Dept Civil & Environm Engn, Nur Sultan 010000, Kazakhstan
Tokazhanov, Galym
Han, Seunghee
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Gwangju Inst Sci & Technol, Sch Earth Sci & Environm Engn, Gwangju 500712, South KoreaNazarbayev Univ, Sch Engn & Digital Sci, Dept Civil & Environm Engn, Nur Sultan 010000, Kazakhstan
Han, Seunghee
Lee, Woojin
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Nazarbayev Univ, Sch Engn & Digital Sci, Dept Civil & Environm Engn, Nur Sultan 010000, Kazakhstan
Nazarbayev Univ, Green Energy & Environm & Lab, Natl Lab Astana, Nur Sultan 010000, KazakhstanNazarbayev Univ, Sch Engn & Digital Sci, Dept Civil & Environm Engn, Nur Sultan 010000, Kazakhstan
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Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R ChinaNanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R China
Jiang, Hong
Liu, Manman
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Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R ChinaNanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R China
Liu, Manman
Zhou, Minghui
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Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R ChinaNanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R China
Zhou, Minghui
Du, Yan
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Nanjing Tech Univ, Sch Environm Sci & Engn, Nanjing 211816, Peoples R ChinaNanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R China
Du, Yan
Chen, Rizhi
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Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R ChinaNanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Nanjing 211816, Peoples R China
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Seoul Natl Univ Sci & Technol, Dept Environm Engn, 232 Gongneung Ro, Seoul 01811, South KoreaKonkuk Univ, Dept Civil & Environm Engn, 120 Neungdong Ro, Seoul 05029, South Korea