Nonionic surfactant greatly enhances the reductive debromination of polybrominated diphenyl ethers by nanoscale zero-valent iron: Mechanism and kinetics

2014 ◽  
Vol 278 ◽  
pp. 592-596 ◽  
Author(s):  
Da-wei Liang ◽  
Yu-han Yang ◽  
Wei-wei Xu ◽  
Si-kan Peng ◽  
Shan-fu Lu ◽  
...  
Keyword(s):  
Nonionic Surfactant ◽  
Polybrominated Diphenyl Ethers ◽  
Zero Valent Iron ◽  
Nanoscale Zero Valent Iron ◽  
Diphenyl Ethers ◽  
Mechanism And Kinetics

Synthesis of SiO2coated zero-valent iron/palladium bimetallic nanoparticles and their application in a nano-biological combined system for 2,2′,4,4′-tetrabromodiphenyl ether degradation

RSC Advances ◽  
2016 ◽  
Vol 6 (24) ◽  
pp. 20357-20365 ◽  
Author(s):  
Yuancai Lv ◽  
Zhuyu Niu ◽  
Yuancai Chen ◽  
Yongyou Hu
Keyword(s):  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Polybrominated Diphenyl Ethers ◽  
Bimetallic Nanoparticles ◽  
Zero Valent Iron ◽  
Combined System ◽  
Significant Challenge ◽  
Diphenyl Ethers ◽  
Iron Palladium

Polybrominated diphenyl ethers (PBDEs) are emerging persistent organic pollutants and the degradation of PBDEs is still a significant challenge owing to their extreme persistence and toxicity.

A Quantitative Structure-Property Relationship Study on Reaction Rate Constants for Reductive Debromination of Polybrominated Diphenyl Ethers by Zero-Valent Iron

2012 ◽  
Vol 550-553 ◽  
pp. 2668-2675 ◽  
Author(s):  
Ji Wei Hu ◽  
Yuan Zhuang ◽  
Jin Luo ◽  
Xiong Hui Wei
Keyword(s):  
Rate Constants ◽  
Polybrominated Diphenyl Ethers ◽  
Reaction Rate ◽  
Zero Valent Iron ◽  
Quantitative Structure ◽  
Structure Property ◽  
Ann Model ◽  
Reaction Rate Constants ◽  
Structure Property Relationship ◽  
Diphenyl Ethers

A quantitative structure property relationship (QSPR) study was performed in this work to develop models for predicting reaction rate constants for reductive debromination of polybrominated diphenyl ethers (PBDEs) by zero-valent iron (ZVI). Both multiple linear regression (MLR) and artificial neural network (ANN) methods were employed for QSPR studies based on the experimental kinetic data of the fourteen PBDE congeners. Both the developed MLR and ANN models could give satisfactory prediction abilities, and the performance of the ANN model seems slightly better than that of the MLR model. In addition, energy of lowest unoccupied molecular orbital (ELUMO) and total energy (TE) were found to be the two relatively important variables in the ANN model via the assessment using both the Garson’s algorithm and connection weight approach.

scholarly journals Remediation and Biological Activity of Nano Zero-valent Iron Supported by Biomass Carbon on Soil Contaminated With Polybrominated Diphenyl Ethers

2021 ◽  
Author(s):  
Zhen Xu ◽  
Chao Song ◽  
Yue Zhu ◽  
Chi Zhang ◽  
Xiaoyue Huang
Keyword(s):  
Biological Activity ◽  
Removal Efficiency ◽  
Contaminated Soil ◽  
Polybrominated Diphenyl Ethers ◽  
Basal Respiration ◽  
Zero Valent Iron ◽  
Biomass Carbon ◽  
Soil Systems ◽  
Diphenyl Ethers ◽  
Bde 209

Abstract Polybrominated diphenyl ethers (PBDEs) are toxic to humans and can easily accumulate in the environment. Nanoscale zero-valent iron (NZVI) and modified NZVI have been developed to remediate PBDE contamination. However, their degradation in soil systems and their microbial toxicity have not been widely explored. In this study, NZVI supported on biomass carbon was applied to remove decabromodiphenyl ether (BDE-209) from contaminated soil. A removal efficiency of 100% was achieved within 384 h as BDE-209 reacted with 0.10 g/g soil biomass carbon NZVI particles (BC–NZVI) at pH 7.00. The reaction followed pseudo-first-order kinetics, and the BDE-209 removal efficiency increased with increasing BC–NZVI dosage and decreasing initial BDE-209 concentration, pH, and moisture content. Biological activity assays (dehydrogenase activity and soil basal respiration) were conducted to provide a preliminary risk assessment of the BC–NZVI application in BDE-209 contaminated soil. The results demonstrate that BC–NZVI has a strong potential for in situ remediation of organic-contaminated soil.

Adsorption and advanced oxidation of diverse pharmaceuticals and personal care products (PPCPs) from water using highly efficient rGO–nZVI nanohybrids

2020 ◽  
Vol 6 (8) ◽  
pp. 2223-2238 ◽  
Author(s):  
Arvid Masud ◽  
Nita G. Chavez Soria ◽  
Diana S. Aga ◽  
Nirupam Aich
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Personal Care Products ◽  
Advanced Oxidation ◽  
Zero Valent Iron ◽  
Redox Activity ◽  
Personal Care ◽  
Adsorption Sites ◽  
Reduced Graphene ◽  
Nanoscale Zero Valent Iron

Reduced graphene oxide-nanoscale zero valent iron (rGO–nZVI) nanohybrid, with tunable adsorption sites of rGO and unique catalytic redox activity of nZVI, perform enhanced removal of diverse PPCPs from water.

Sign in / Sign up

Export Citation Format

Share Document