Fabrication of porous materials using quinoa husk and attapulgite co-stabilized foam templates for dye adsorption and post-treatment of soil remediation

Environmental Technology & Innovation, Год журнала: 2024, Номер 35, С. 103679 - 103679

Опубликована: Май 17, 2024

Water-based foam has great potential in the preparation of porous materials, but there is still a lack green and simple methods. In this study, stable water-based that co-stabilized with saponin leached from agricultural waste quinoa husk (QH) nano-clay attapulgite (APT). The thickening effect interface stability modified APT played crucial role formation stabilization Pickering foam. free radical polymerization occurred continuous phase without affecting stability, obtained pore-rich adsorbent displayed high-performance adsorption for methylene blue methyl violet, capacities reaching up to 291.95 mg/g 430.01 mg/g, respectively. keeping idea sustainable development, spent was pyrolyzed converted into mineral biochar. pot experiments showed biochar could improve soil properties promoted plant growth. This work provides new approach production also an alternative realize high value utilization QH.

Язык: Английский

The Mechanism of Arsenic Release in Contaminated Paddy Soil with Added Biochar: The Role of Dissolved Organic Matter, Fe, and Bacteria

Toxics, Год журнала: 2024, Номер 12(9), С. 661 - 661

Опубликована: Сен. 10, 2024

The addition of biochar inevitably modifies the acidity (pH), redox potential (Eh), and dissolved organic matter (DOM) level in soil. These alterations also have coupled effects on cycling iron (Fe) composition bacterial communities, thereby impacting speciation availability arsenic (As) This study explored mechanisms through which affects As paddy soil during flooded cultivation with different pyrolysis temperature biochars (300 °C, 400 500 °C) added. results revealed that TAs concentration increased initial 15 days SBC300 or SBC400 because increasing DOM induced mobility though formation As-DOM complexes. Meanwhile, elevated pH, decreased Eh, promoted transformation specific adsorbed (A-As) amorphous oxide-bound (Amo-Fe-As) to supernatant enhancing reductive dissolution Fe(oxy)(hydr)oxides. Moreover, altered relative abundance (V)-reducing bacteria (such as

Язык: Английский

Enhanced Remediation/Stabilization of As-Bearing Pyrite Tailings by Modified Biochar Via Co-Pyrolysis

Опубликована: Янв. 1, 2024

Язык: Английский