Kinetics of tetrabromobisphenol A (TBBPA) reactions with H2SO4, HNO3 and HCl: Implication for hydrometallurgy of electronic wastes

Zhong, Yin; Li, Dan; Mao, Zhe; Huang, Weilin; Peng, Ping’an; Chen, Pei; Mei, Jun

doi:10.1016/j.jhazmat.2014.01.032

Cited by 20 publications

(7 citation statements)

References 30 publications

(44 reference statements)

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“…Chloride and sulfate were generally used as complexant and oxidant in leaching of hydrometallurgy processes, thus leading the wastewater would contain

{S O}_{4}^{2 -}

{H C O}_{3}^{-}

and Cl − . The present work is to understand the effect on the corrosion behavior and corrosion mechanism of UNS S32750 duplex stainless steel in solutions containing

{H C O}_{3}^{-}

{S O}_{4}^{2 -}

and Cl − .…”

Section: Introductionmentioning

confidence: 99%

Effect of inorganic anions on the corrosion behavior of UNS S32750 duplex stainless steel in chloride solution

Jin

Liu²,

Lin³

et al. 2015

Materials & Corrosion

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The present study explored the electrochemical behavior of UNS S32750, a super duplex stainless steel which was not commonly researched in previous studies. The effect of bicarbonate (HCO À 3 ) and sulfate (SO 2À 4 ) on the electrochemical behavior of UNS S32750 duplex stainless steel in the chloride (Cl À ) solution was investigated using potentiodynamic polarization, scanning electron microscope (SEM), electrochemical impedance spectroscopy (EIS), and Mott-Schottky analysis. The electrochemistry behavior shows that with the addition of HCO À 3 and SO 2À 4 , pitting potential increased and passive current density decreased, indicating that bicarbonate or sulfate can reduce sensitivity to pitting corrosion of UNS S32750 duplex stainless steel in Cl À solution, and film resistance (R 1 ) and lower charge transfer resistances (R 2 ) increased, and the carriers density (N A and N D ) values are about 10 20 cm 3 , and the carriers density decreases. The results may provide theoretical guidance for material-choosing in the wastewater treatment industries containing high chloride concentration such as nonferrous metallurgical wastewater.

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“…Chloride and sulfate were generally used as complexant and oxidant in leaching of hydrometallurgy processes, thus leading the wastewater would contain

{S O}_{4}^{2 -}

{H C O}_{3}^{-}

and Cl − . The present work is to understand the effect on the corrosion behavior and corrosion mechanism of UNS S32750 duplex stainless steel in solutions containing

{H C O}_{3}^{-}

{S O}_{4}^{2 -}

and Cl − .…”

Section: Introductionmentioning

confidence: 99%

Effect of inorganic anions on the corrosion behavior of UNS S32750 duplex stainless steel in chloride solution

Jin

Liu²,

Lin³

et al. 2015

Materials & Corrosion

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“…This electrochemical system is free of microbes compared to denitrification; thus, it is easier to operate due to the needless cultivation of microbes. The results are expected to provide an alternative technology for the treatment of nitrate wastewater from etching and rinsing processes in the metallic, textile, and electronic industries − with the self-generation of electricity.…”

Section: Introductionmentioning

confidence: 99%

PdCu/C Catalyst with Electricity Self-Generation via a Fuel Cell for Electroreduction of Nitrate

Zhang

et al. 2022

ACS Appl. Energy Mater.

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This research aims to use nitrate as an electron acceptor in the cathode of ethanol fuel cells. Nitrate was electroreduced to nitrogen gas at the cathode and removed from water. Carbon-supported PdCu was prepared as a cathode catalyst for nitrate reduction and was characterized by electrochemical methods, scanning electron microscopy, and X-ray diffraction. The results show that PdCu/C is vital to the evolution of nitrate to nitrite and then to N2 gas. A nitrogen selectivity of approximately 93% is obtained under acidic conditions, in which protons facilitate the electroreduction of nitrate to N2. A maximum power density of 2.90 W m–2 with an open-circuit voltage of 1.6 V is achieved at 20 °C using 300 ppm N-NO3 −. After 24 h of discharge, approximately 56% of the nitrate is eliminated with an initial N-NO3 − concentration of 150 ppm. The undesirable products of ammonia and nitrite are not observed in the catholyte. The technique developed in this work provides a sustainable solution for either nitrate removal by electroreduction or electricity generation for net energy recovery.

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“…In previous studies, TBBPA and HBCD in the water environment could be removed by adsorption, [3] biological degradation, [4] photocatalytic technology, [5] Fenton technologies, [6] electrochemical methods, [7] and so on. Among these methods, advanced oxidation processes (AOPs) have been intensively used to degrade organic compounds in water.…”

Section: Introductionmentioning

confidence: 99%

Graphene/β‐cyclodextrin Membrane: Synthesis and Photoelectrocatalytic Degradation of Brominated Flame Retardants

et al. 2021

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Brominated flame retardants (BFRs) have attracted considerable attention due to their environmental persistence and potentially high environmental risk. Therefore, the development of an efficient method for the removal of BFRs is urgently needed. In this work, a photoelectrocatalytic method based on a graphene (GR)/β‐cyclodextrin (β‐CD) membrane was developed to degrade BFRs (including tetrabromobisphenol A (TBBPA) and 1,2,5,6,9,10‐hexabromocyclododecane (HBCD)). The obtained GR/β‐CD membrane has high efficiency for photoelectrocatalytic degradation and excellent chemical stability. Under optimum conditions, the photoelectrocatalytic degradation efficiencies of TBBPA was 99.2 % within 120 min, and HBCD was 90.7 % within 180 min. And superoxide radical was essential for the photoelectrocatalytic degradation of both TBBPA and HBCD. Toxicity assessments for the possible degradation pathways was a decreasing trend, which indicated that potential risks for aquatic organisms were reduced. Briefly, this work provides a strategy to construct a GR‐based photoelectrocatalyst and paves the pathway for practical applications. The work demonstrated here offers a new‐sight for designing and constructing efficient photoelectrocatalyst for environment‐related applications.

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Kinetics of tetrabromobisphenol A (TBBPA) reactions with H2SO4, HNO3 and HCl: Implication for hydrometallurgy of electronic wastes

Cited by 20 publications

References 30 publications

Effect of inorganic anions on the corrosion behavior of UNS S32750 duplex stainless steel in chloride solution

Effect of inorganic anions on the corrosion behavior of UNS S32750 duplex stainless steel in chloride solution

PdCu/C Catalyst with Electricity Self-Generation via a Fuel Cell for Electroreduction of Nitrate

Graphene/β‐cyclodextrin Membrane: Synthesis and Photoelectrocatalytic Degradation of Brominated Flame Retardants

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