Functional biochar fabricated from red mud and walnut shell for phosphorus wastewater treatment: Role of minerals

Environmental Research, Год журнала: 2023, Номер 232, С. 116348 - 116348

Опубликована: Июнь 7, 2023

Язык: Английский

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Facile and scalable synthesis of long-life porous MgO-nanofiber functionalized biochar adsorbent from magnesite for phosphate recycling

Separation and Purification Technology, Год журнала: 2024, Номер 354, С. 129234 - 129234

Опубликована: Авг. 18, 2024

Язык: Английский

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Magnesium-modified starch cryogels for the recovery of nitrogen and phosphorus from wastewater and its potential as a fertilizer substitute: a novel nutrient recovery approach

Journal of environmental chemical engineering, Год журнала: 2024, Номер 12(5), С. 114044 - 114044

Опубликована: Сен. 8, 2024

Язык: Английский

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Simultaneous removal and recovery of ammonium and phosphate ions using flow electrode capacitive deionization through the struvite generation mechanism

Separation and Purification Technology, Год журнала: 2024, Номер 358, С. 130395 - 130395

Опубликована: Ноя. 4, 2024

Язык: Английский

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A slow-release oxygen composite based on sulfur/CaO2 for sustained in-situ ammonia degradation form farmland drainage

Environmental Research, Год журнала: 2025, Номер unknown, С. 121094 - 121094

Опубликована: Фев. 1, 2025

Язык: Английский

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Analysis of Alkali in Bayer Red Mud: Content and Occurrence State in Different Structures

Sustainability, Год журнала: 2023, Номер 15(17), С. 12686 - 12686

Опубликована: Авг. 22, 2023

The application of large amounts red mud in the field building materials is one main ways to reuse this material, but high alkali content limits its application. In paper, washable alkali, removable and lattice contents Bayer were studied, occurrence states potassium sodium studied using XRD, IR, XPS, NMR. On basis, removal mechanism for was analyzed. results showed that Na mainly deposited shelf silicon voids hydroxy sodalite (Na8(AlSiO4)6(OH)2(H2O)2) form Si-O-Na or Al-O-Na. K silico-oxygen void feldspar (KAlSi3O8) Si-O-K Al-O-K. 13.7% 4.47%; agent CaO removed 83.1% 50.8% mud; 3.20% 44.8%, respectively. process dealkalization, Ca2+ ions can enter internal hydroxyl silica skeleton then replace Al3+ Si-O Na+ K+ voids. replacement reaction changes tetrahedron network structure, resulting disintegration frame-like feldspar, forming an isolated, island-like hydrated garnet.

Язык: Английский

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Autoclaved aerated concrete grains as alternative absorbent and filter media for phosphorus recovery from municipal wastewater: A case study in Hanoi, Vietnam

Environmental Technology & Innovation, Год журнала: 2023, Номер 31, С. 103175 - 103175

Опубликована: Апрель 30, 2023

Construction and demolition wastes, especially autoclaved aerated concrete (AAC), increase with the expansion of construction. AAC is a high-porosity material surface rich in metal hydroxides, which promotes both biofilm growth phosphate binding. This study assessed efficiency using grains for recovery phosphorus (P) biological treatment municipal wastewater (MWW). Batch adsorption tests synthetic phosphate-rich determined affinity P 3–5 mm 5–10 grains, profiles were obtained. adsorbed well maximum 1.1 mg P/g based on Langmuir isotherm model removal >96% (initial concentration 30 mg/L). Biofiltration through three reactor tanks particles (30–50 mm) was performed by circulating MWW retention times 19–40 h to evaluate elimination (E) chemical oxygen demand (COD), total nitrogen (TN), (TP) each tank. The biofiltration system effectively removed target pollutants, E values ranging from 80% 90% COD, 38% 70% TN, 92% TP. high led MWW, resulting content 1.33 g/kg system. demonstrated that waste can serve as an inexpensive easily recyclable used treat MWW.

Язык: Английский

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Corn stover waste preparation cerium-modified biochar for phosphate removal from pig farm wastewater: adsorption performance and mechanism

Biochemical Engineering Journal, Год журнала: 2024, Номер 212, С. 109530 - 109530

Опубликована: Окт. 13, 2024

Язык: Английский

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Combined stripping-struvite precipitation process for treating high ammonia-nitrogen wastewater generated by the craft of vanadium extraction

Environmental Science Water Research & Technology, Год журнала: 2023, Номер 9(11), С. 3049 - 3061

Опубликована: Янв. 1, 2023

Unlocking Sustainable Solutions! A significant achievement in high-concentration ammonia–nitrogen removal from vanadium extraction wastewater is reported through an innovative combination of stripping and struvite precipitation methods.

Язык: Английский

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Frontier research and prospect of phosphate adsorption in wastewater by red mud: a review

Desalination and Water Treatment, Год журнала: 2023, Номер 310, С. 86 - 108

Опубликована: Окт. 1, 2023

Red mud is a red-coloured, mud-like solid waste discharged from the industrial aluminium production process, which has high output and pollutant.It exhibits small particle size large specific surface area contains active oxides.In this study, "red mud" "phosphate" were used as keywords to retrieve research hotspots progress for red phosphate adsorbent in past 10 y.CiteSpace VOSviewer visual literature analysis software cluster countries, institutions, authors, keywords.Related patents showed that on adsorption performance of considerably increased since 2013 China made significant contribution.This paper summarises main chemical composition modification methods collects relevant mechanism data adsorption/desorption using an adsorbent.Summarising microstructure adsorbent, it found there are few reports based density functional theory.This study suggests problem steric hindrance process needs further research.

Язык: Английский

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