4.7 Article

Natural pyrite improved steel slag towards environmentally sustainable chromium reclamation from hexavalent chromium-containing wastewater

Related references

Note: Only part of the references are listed.
Article Environmental Sciences

The contribution of lignocellulosic constituents to Cr(VI) reduction capacity of biochar-supported zerovalent iron

Min Zhou et al.

Summary: The study demonstrated that biochars derived from cellulose and hemicellulose have higher Cr(VI) removal capacity and are more conducive to electron transfer for ZVI, while biochars derived from lignin perform less effectively.

CHEMOSPHERE (2021)

Article Chemistry, Applied

Enhancement of Cr(VI) removal efficiency via adsorption/photocatalysis synergy using electrospun chitosan/g-C3N4/TiO2 nanofibers

Qing-Hao Li et al.

Summary: Chitosan/g-C3N4/TiO2 (CS/CNT) nanofibers were fabricated for Cr(VI) removal using adsorption and photocatalytic processes. The addition of g-C3N4/TiO2 enhanced the acid resistance of CS, leading to improved removal efficiency of Cr(VI) under visible-light irradiation through synergistic effect of adsorption and photocatalysis.

CARBOHYDRATE POLYMERS (2021)

Article Engineering, Environmental

Pyrite-activated persulfate for simultaneous 2,4-DCP oxidation and Cr(VI) reduction

Peng He et al.

Summary: Organic pollutants and heavy metals in wastewater were effectively removed simultaneously using pyrite and persulfate system, where SO4 center dot- and (OH)-O-center dot radicals were identified as the oxidative species responsible for degrading 2,4-DCP. Pyrite acted as a catalyst for Cr(VI) reduction, with Fe identified as the main catalytic site, showcasing a new strategy for the simultaneous removal of heavy metals and organic compounds in wastewater treatment.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Environmental Sciences

In situ construction of Z-scheme FeS2/Fe2O3 photocatalyst via structural transformation of pyrite for photocatalytic degradation of carbamazepine and the synergistic reduction of Cr(VI)

Qian Guo et al.

Summary: A Z-scheme FeS2/Fe2O3 composite photocatalyst was fabricated through heat treatment, showing significantly enhanced photocatalytic performance and high degradation efficiency towards carbamazepine (CBZ). The improved photocatalytic activity was attributed to the efficient separation and transfer of photogenerated carriers in the composite photocatalyst.

JOURNAL OF ENVIRONMENTAL SCIENCES (2021)

Article Engineering, Environmental

Efficient activation of oxone by pyrite for the degradation of propanil: Kinetics and degradation pathway

Tao Li et al.

Summary: The study demonstrated that the pyrite/oxone process is an efficient method for the degradation of propanil, with more than 90% decay achieved within 15 minutes. The generated SO4- and OH were found to be the dominant reactive radicals, with optimal reaction pH values observed at pH 9.1 and pH 2.9. The Fe(II) regeneration and sulfur conversion play important roles in the oxone activation mechanism. Co-existing natural water constituents have differing effects on the pyrite/oxone process, and the process shows promise for organic compound removal in water.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Green & Sustainable Science & Technology

Ecological carbonated steel slag pervious concrete prepared as a key material of sponge city

Weiguo Shen et al.

JOURNAL OF CLEANER PRODUCTION (2020)

Article Green & Sustainable Science & Technology

Novel concept of steam modification towards energy and iron recovery from steel slag: Oxidation mechanism and process evaluation

Peng Li et al.

JOURNAL OF CLEANER PRODUCTION (2020)

Article Environmental Sciences

Simultaneous removal of Cr(VI) and acid orange 7 from water in pyrite-persulfate system

Wen Li et al.

ENVIRONMENTAL RESEARCH (2020)

Article Engineering, Environmental

Removal of Cr(VI) from water by adsorption using low cost clay-perlite-iron membranes

Miguel Angel Lopez Zavala et al.

JOURNAL OF WATER PROCESS ENGINEERING (2020)

Article Engineering, Environmental

Removal mechanism of arsenic (V) by stainless steel slags obtained from scrap metal recycling

Van Liem-Nguyen et al.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2020)

Article Biotechnology & Applied Microbiology

Graphene and visible light enhance pyrite-based Cr(VI) reduction in the presence of Acidithiobacillus ferrooxidans

Min Gan et al.

INTERNATIONAL BIODETERIORATION & BIODEGRADATION (2019)

Article Electrochemistry

HO• selective cleavage Fe-S bond for FeS2 electrolysis in alkaline solution

Tong Zhang et al.

ELECTROCHIMICA ACTA (2019)

Review Environmental Sciences

As(III) and Cr(VI) oxyanion removal from water by advanced oxidation/reduction processesa review

Belisa A. Marinho et al.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2019)

Article Crystallography

Formation of modulated structures induced by oxygen vacancies in alpha-Fe2O3 nanowires

Tao Li et al.

JOURNAL OF CRYSTAL GROWTH (2018)

Article Engineering, Environmental

Stabilization of nanoscale zero-valent iron (nZVI) with modified biochar for Cr(VI) removal from aqueous solution

Haoran Dong et al.

JOURNAL OF HAZARDOUS MATERIALS (2017)

Article Engineering, Chemical

The surface properties of pyrite coupled with gold in the presence of oxygen

Yangyang Huai et al.

MINERALS ENGINEERING (2017)

Article Environmental Sciences

Cr(VI) removal from aqueous systems using pyrite as the reducing agent: Batch, spectroscopic and column experiments

Cetin Kantar et al.

JOURNAL OF CONTAMINANT HYDROLOGY (2015)

Article Geochemistry & Geophysics

Oxidative dissolution of pyrite surfaces by hexavalent chromium: Surface site saturation and surface renewal

Andrew M. Graham et al.

GEOCHIMICA ET COSMOCHIMICA ACTA (2012)

Article Engineering, Chemical

Reduction of chromium(VI) by pyrite in dilute aqueous solutions

Yao-Tung Lin et al.

SEPARATION AND PURIFICATION TECHNOLOGY (2008)

Article Chemistry, Physical

Investigation of pyrite oxidation by hexavalent chromium: Solution species and surface chemistry

Frederic Demoisson et al.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2007)

Article Engineering, Environmental

In situ treatment of chromium-contaminated groundwater

J Fruchter

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2002)