The desulfurization of lead paste by regenerated alkali was as follows: (i) desulfurization was conducted by adding waste lead paste to a beaker containing a certain volume of regenerated NaOH solution and stirred. (ii) After the desulfurization reaction was complete, filter residue and filtrate were obtained by vacuum filtration.
Hence, based on the minimum specific gravity of industrial lead paste slurry, the concentration of desulfurizer required for sodium-calcium double alkali lead paste desulfurization was estimated to be at least 2.32 mol/L. 3.2. Mechanism of a novel process of lead paste pre-desulfurization
There are four main components in spent lead acid battery: polymeric containers, lead alloy grids, waste acids and pastes. Among them, the pastes mainly comprise lead oxide (∼9%), lead dioxide (∼28%), lead sulfate (∼60%) and a small amount of lead (∼3%) (Zhu et al., 2012a).
The new sodium-calcium double-alkali lead paste pre-desulfurization process proposed in this paper involved the direct reaction of lead paste with NaOH solution. Relatively cheap lime was reacted with the mother liquor, the sodium sulfate produced by desulfurization, to regenerate NaOH.
Conclusions A research investigation for recycling lead from lead paste in the spent lead acid battery under vacuum has been developed in this work.
NaOH was used as the direct desulfurizer for lead paste, and lime was used to regenerate NaOH from the mother liquid at sufficient concentrations for desulfurization.
Recycling of Lead Pastes from Spent Lead–Acid Batteries: …
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Operation of Lead Acid Batteries
If current is being provided to the battery faster than lead sulfate can be converted, then gassing begins before all the lead sulfate is converted, that is, before the battery is fully charged. Gassing introduces several problems into a lead acid battery. Not only does the gassing of the battery raise safety concerns, due to the explosive ...
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In this study, we propose a facile route for the recovery of lead from spent lead paste by pre-desulfurization followed by low-temperature reduction smelting. The effects of …
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Analysis of a more sustainable method for recycling waste lead ...
The traditional sodium desulfurization process for waste lead-acid batteries is beneficial to the environment; however, it is limited by poor economic viability as the cost of desulfurizer is much higher than the value of desulfurization by-products. This study proposes a new closed-loop pre-desulfurization process for lead paste, which ...
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In principle, lead–acid rechargeable batteries are relatively simple energy storage devices based on the lead electrodes that operate in aqueous electrolytes with sulfuric acid, while the details of the charging and discharging processes are complex and pose a number of challenges to efforts to improve their performance. This technology accounts for 70% of the …
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Herein, dual rotating liquid film reactors (RLFRs) and lime are proposed to construct a recyclable, ultra-fast, and value-added desulfation method. Parameter optimization …
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Efficient Desulfurizer Recycling during Spent Lead-Acid Batteries …
For the residual Na 2 MoO 4 after first SLBP desulfurization, the desulfurization efficiency remains above 97.36 wt% after adding fresh reagents for two running cycles. The new principle enables the reuse of 99.83 wt% of Na 2 MoO 4 and the recycling of 95.27 wt% of Pb without generating wastewater and slags.
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Lead–acid battery
The lead–acid battery is a type of rechargeable battery first invented in 1859 by French physicist Gaston Planté is the first type of rechargeable battery ever created. Compared to modern rechargeable batteries, lead–acid batteries have relatively low energy density spite this, they are able to supply high surge currents.These features, along with their low cost, make them …
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In this study, we propose a facile route for the recovery of lead from spent lead paste by pre-desulfurization followed by low-temperature reduction smelting. The effects of two desulfurization methods, i.e., high-pressure and normal-pressure processes, on the desulfurization efficiency of spent lead paste were compared.
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Ultra‐Fast Recyclable and Value‐Added Desulfation Method for Spent Lead ...
Herein, dual rotating liquid film reactors (RLFRs) and lime are proposed to construct a recyclable, ultra-fast, and value-added desulfation method. Parameter optimization and kinetic calculations prove that the above reactions are controlled by internal diffusion, revealing that RLFR promotes the mass transfer and reaction rate.
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What is Lead-Acid Battery?
The Lead-Acid Battery is a Rechargeable Battery. Lead-Acid Batteries for Future Automobiles provides an overview on the innovations that were recently introduced in automotive lead-acid batteries and other aspects of current research.
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Recovery of lead from lead paste in spent lead acid battery by ...
This paper reports a recovery of lead contained in spent lead acid battery using hydrometallurgical desulfurization and vacuum thermal reduction. The spent lead pastes are converting sulfur (PbSO 4 ) to soluble sulfates (Na 2 SO 4 …
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A novel approach to recover lead oxide from spent lead acid batteries ...
In this paper, a novel approach to recover PbO from lead pastes of spent lead acid batteries by desulfurization and crystallization in sodium hydroxide (NaOH) solution after sulfation was proposed. In the lead pastes, PbO can react with sulfuric acid easily to generate PbSO 4, so that the contents of PbO have little impact on the sulfation.
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Analysis of a more sustainable method for recycling waste lead ...
A novel approach to recover lead oxide from spent lead acid batteries by desulfurization and crystallization in sodium hydroxide solution after sulfation
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Past, present, and future of lead–acid batteries
In principle, lead–acid rechargeable batteries are relatively simple energy stor-age devices based on the lead electrodes that operate in aqueous electro- lytes with sulfuric acid, while the details of the charging and discharging processes are complex and pose a number of challenges to efforts to improve their performance. This technology accounts for 70% of the …
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Recovery of lead from lead paste in spent lead acid battery by ...
This paper reports a recovery of lead contained in spent lead acid battery using hydrometallurgical desulfurization and vacuum thermal reduction. The spent lead pastes are …
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Recycling of Lead Pastes from Spent Lead–Acid Batteries: …
In the recycling process for lead–acid batteries, the desulphurization of lead sulfate is the key part to the overall process. In this work, the thermodynamic constraints for desulphurization via the hydrometallurgical route for recycling lead pastes are presented.
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Efficient Desulfurizer Recycling during Spent Lead–Acid Batteries …
Recycling of spent lead-acid batteries (LABs) is extremely urgent in view of environmental protection and resources reuse. The current challenge is to reduce high consumption of chemical reagents. Herein, a closed-loop spent LABs paste (SLBP) recovery …
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This paper reports a new method of direct recovery of highly pure lead oxide (PbO) from waste lead pastes and lead grids of spent lead–acid batteries via catalytic …
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Recovery of Lead from Spent Lead Paste by Pre-desulfurization …
The treatment of spent lead paste is essential for the recycling of spent lead-acid batteries. In this study, we propose a facile route for the recovery of lead from spent lead paste by pre-desulfurization followed by low-temperature reduction smelting. The effects of two desulfurization methods, i.e., high-pressure and normal-pressure processes, on the …
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Preparation of High Purity Lead Oxide from Spent Lead Acid Batteries ...
This paper reports a new method of direct recovery of highly pure lead oxide (PbO) from waste lead pastes and lead grids of spent lead–acid batteries via catalytic conversion, desulfurization, and recrystallization processes in sequence.
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Recovery of lead from lead paste in spent lead acid battery by ...
Semantic Scholar extracted view of "Recovery of lead from lead paste in spent lead acid battery by hydrometallurgical desulfurization and vacuum thermal reduction." by Yunjian Ma et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar''s Logo. Search 222,353,153 papers from all fields of science. Search. Sign In Create Free Account. DOI: …
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Efficient Desulfurizer Recycling during Spent Lead–Acid Batteries …
Recycling of spent lead-acid batteries (LABs) is extremely urgent in view of environmental protection and resources reuse. The current challenge is to reduce high consumption of chemical reagents. Herein, a closed-loop spent LABs paste (SLBP) recovery strategy is demonstrated through Na
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Efficient Desulfurizer Recycling during Spent Lead-Acid Batteries …
For the residual Na 2 MoO 4 after first SLBP desulfurization, the desulfurization efficiency remains above 97.36 wt% after adding fresh reagents for two running cycles. The …
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How To Desulfate A Battery
If you are experiencing problems with your lead-acid battery, desulfation may be the solution. Desulfation is the process of removing sulfate deposits from the lead plates of a battery. Using a Battery Desulfator. A battery desulfator is a device that uses high-frequency pulses to break down sulfate deposits on the lead plates of a battery. This tool can help …
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Past, present, and future of lead-acid batteries | Request PDF
Request PDF | On Aug 21, 2020, Pietro P Lopes and others published Past, present, and future of lead-acid batteries | Find, read and cite all the research you need on ResearchGate
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