Removal of ammonium and phosphate from wastewater by potassium permanganate modified Chinese medicine residues

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Abstract With the rapid development of the Chinese medicine industry, the treatment of Chinese medicine residues has received widespread attention. This study was performed to investigate the removal of ammonium and phosphate from wastewater using potassium permanganate (KMnO4) modified Chinese medicine residues. The results showed that the adsorption performance of KMnO4 modified Chinese medicine residues (MR) was significantly efficient on nitrogen and phosphorus from the wastewater compared to unmodified Chinese medicinal residues (UR). The optimal adsorption conditions for nitrogen and phosphorus by the MR were modification concentration 0.6 g/L, modification time 4 h, adsorption time 4 h, adsorbent dosage 5 g/L, adsorption particle size 0.50 mm and pH 8. In addition, the optimal initial concentrations of nitrogen and phosphorus were 40 mg/L and 10 mg/L, respectively. The nitrogen and phosphorus adsorption by the UR and MR followed the pseudo second-order kinetic model and fitted the Langmuir isotherm equation. It is of great significance for resource conservation and environmental protection through the rational utilization and development of biomass resources from Chinese medicinal residues.
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Removal of ammonium and phosphate from wastewater by potassium permanganate modified Chinese medicine residues | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Removal of ammonium and phosphate from wastewater by potassium permanganate modified Chinese medicine residues Jiachen Chen, Ze Zhong, Weilin Chen, Jie Zhu, Kai Luo, Jie Zhang, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4789532/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract With the rapid development of the Chinese medicine industry, the treatment of Chinese medicine residues has received widespread attention. This study was performed to investigate the removal of ammonium and phosphate from wastewater using potassium permanganate (KMnO 4 ) modified Chinese medicine residues. The results showed that the adsorption performance of KMnO 4 modified Chinese medicine residues (MR) was significantly efficient on nitrogen and phosphorus from the wastewater compared to unmodified Chinese medicinal residues (UR). The optimal adsorption conditions for nitrogen and phosphorus by the MR were modification concentration 0.6 g/L, modification time 4 h, adsorption time 4 h, adsorbent dosage 5 g/L, adsorption particle size 0.50 mm and pH 8. In addition, the optimal initial concentrations of nitrogen and phosphorus were 40 mg/L and 10 mg/L, respectively. The nitrogen and phosphorus adsorption by the UR and MR followed the pseudo second-order kinetic model and fitted the Langmuir isotherm equation. It is of great significance for resource conservation and environmental protection through the rational utilization and development of biomass resources from Chinese medicinal residues. Nitrogen phosphorus Absorption Potassium permanganate Modification Chinese medicine residue Full Text Supplementary Files Graphicalabstract.tif Highlights.docx Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4789532","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":334139305,"identity":"68f8e09b-47da-4247-9072-0accfea186ed","order_by":0,"name":"Jiachen 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