Search | Engineering

Subscribe Submit

Home Journals Focus Achievement Fronts About Us 中文版

Resource Type

Journal Article 5

Year

2021 1

2020 1

2015 2

2014 1

Keywords

debromination 2

2 1

2′ 1

4 1

4′-tetrabromodiphenyl ether (BDE-47) 1

Ascorbic acid 1

BDE-47 1

Co-contamination 1

Debromination 1

Electrokinetic 1

Reductive debromination 1

Zero-valent zinc 1

adsorption 1

decabromodiphenyl ether 1

graphene 1

humic acid 1

mechanism 1

metal ion 1

nanoscale zero-valent iron 1

nanoscale zero-valet metal 1

open ︾

Search scope:

排序： Display mode:

Electrocatalytic debromination of BDE-47 at palladized graphene electrode

Hongtao YU, Bin MA, Shuo CHEN, Qian ZHAO, Xie QUAN, Shahzad AFZAL

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 2, Pages 180-187 doi: 10.1007/s11783-013-0552-x

Abstract: The debromination ability of Ti/Gr/Pd electrodes was investigated using BDE-47 as a target pollutantAlmost all of the BDE-47 was removed in the debromination reaction on the Ti/Gr/Pd electrode at -0.5Although the debromination rate was slightly slower at -0.3 V than that under -0.5 V, the current efficiency

Keywords： graphene palladium debromination BDE-47

HTML PDF Collect

Enhanced debromination of 2,2′,4,4′-tetrabromodiphenyl ether (BDE-47) by zero-valent zinc with ascorbic

Chaojin Jiang, Xiaoqian Jiang, Lixun Zhang, Yuntao Guan

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 3, doi: 10.1007/s11783-020-1224-2

Abstract: Highly efficient debromination of BDE-47 was achieved in the ZVZ/AA system.BDE-47 debromination by the ZVZ/AA can be applied to a wide range of pH.Reduction mechanism of BDE-47 debromination by the ZVZ/AA system was proposed.The high debromination of BDE-47 was mainly attributed to the effect of AA that inhibits the formationThese results suggested that the ZVZ/AA system has the potential for highly efficient debromination of

Keywords： 2 2′ 4 4′-tetrabromodiphenyl ether (BDE-47) Ascorbic acid Reductive debromination Zero-valent zinc

HTML PDF Collect

Effect of humic acid and metal ions on the debromination of BDE209 by nZVM prepared from steel pickling

Yuling CAI,Bin LIANG,Zhanqiang FANG,Yingying XIE,Eric Pokeung TSANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5, Pages 879-887 doi: 10.1007/s11783-014-0764-8

Abstract: As a promising in situ remediation technology, nanoscale zero-valent iron (nZVI) can remove polybrominated diphenyl ethers such as decabromodiphenyl ether (BDE209) effectively, However its use is limited by its high production cost. Using steel pickling waste liquor as a raw material to prepare nanoscale zero-valent metal (nZVM) can overcome this deficiency. It has been shown that humic acid and metal ions have the greatest influence on remediation. The results showed that nZVM and nZVI both can effectively remove BDE209 with little difference in their removal efficiencies, and humic acid inhibited the removal efficiency, whereas metal ions promoted it. The promoting effects followed the order Ni >Cu >Co and the cumulative effect of the two factors was a combination of the promoting and inhibitory individual effects. The major difference between nZVM and nZVI lies in their crystal form, as nZVI was found to be amorphous while that of nZVM was crystal. However, it was found that both nZVM and nZVI removed BDE209 with similar removal efficiencies. The effects and cumulative effects of humic acid and metal ions on nZVM and nZVI were very similar in terms of the efficiency of the BDE209 removal.

Keywords： steel pickling waste liquor nanoscale zero-valet metal nanoscale zero-valent iron humic acid metal ion

HTML PDF Collect

Removal of decabromodiphenyl ether (BDE-209) by sepiolite-supported nanoscale zerovalent iron

Rongbing FU,Na MU,Xiaopin GUO,Zhen XU,Dongsu BI

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5, Pages 867-878 doi: 10.1007/s11783-015-0800-3

Abstract: The degradation of BDE-209 occurred in a stepwise debromination manner, which followed pseudo-first-orderDebromination pathways of BDE-209 with sepiolite-supported nZVI were proposed based on the identified

Keywords： sepiolite-supported nanoscale zerovalent iron decabromodiphenyl ether debromination adsorption mechanism

HTML PDF Collect

Effective remediation of organic-metal co-contaminated soil by enhanced electrokinetic-bioremediation process

Fu Chen, Qi Zhang, Jing Ma, Qianlin Zhu, Yifei Wang, Huagen Liang

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1401-y

Abstract: Abstract • A new EK-BIO technology was developed to decontaminate e-waste contaminated soil. • Adding sodium citrate in electrolyte was a good choice for decontaminating the soil. • The system has good performance with low cost. This work investigates the influence of electrokinetic-bioremediation (EK-BIO) on remediating soil polluted by persistent organic pollutants (POPs) and heavy metals (mainly Cu, Pb and Ni), originated from electronic waste recycling activity. The results demonstrate that most of POPs and metals were removed from the soil. More than 60% of metals and 90% of POPs in the soil were removed after a 30-day EK-BIO remediation assisted by citrate. A citrate sodium concentration of 0.02 g/L was deemed to be suitable because higher citrate did not significantly improve treatment performance whereas increasing dosage consumption. Citrate increased soil electrical current and electroosmotic flow. After remediation, metal residues mainly existed in stable and low-toxic states, which could effectively lower the potential hazard of toxic metals to the surrounding environment and organisms. EK-BIO treatment influenced soil microbial counts, dehydrogenase activity and community structure.

Keywords： Electrokinetic Co-contamination Debromination