Battery desulfurization reagent
However, efficient methods for the development of clean and economical conversion reagents, the economic treatment of wastewater, and the disposal of the resulting byproducts are urgently needed. Pre-desulfurization-free combined electrolysis provides a new approach for the clean hydrometallurgical extraction of waste lead paste. - Download [PDF]
Progress in Waste Lead Paste Recycling Technology from Spent …
However, efficient methods for the development of clean and economical conversion reagents, the economic treatment of wastewater, and the disposal of the resulting byproducts are urgently needed. Pre-desulfurization-free combined electrolysis provides a new approach for the clean hydrometallurgical extraction of waste lead paste.
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Superfast desulfurization for protein chemical synthesis and ...
Herein, we report new reactivity of an old reagent, tetraethylborate (NaBEt 4), which performs superfast and easy-to-use desulfurization for peptides/proteins without heating, irradiation, inert atmosphere, or odorous additives. This method can cleanly desulfurize various substrates and facilitate tandem applications with existing protein ...
A Review of Modeling Hot Metal Desulfurization
1 Introduction. Hot metal desulfurization serves as the main unit process for removing sulfur in blast-furnace-based steelmaking. Hot metal desulfurization is commonly conducted in a ladle or a torpedo car, 1 using a desulfurization reagent that is either injected into the metal bath or added on top of it. 2 From the thermodynamic point of view, the fundamental requirement for the ...
Directly Recovering Lead and Recycling Electrolyte via …
However, the process requires the consumption of chemical reagents in relatively large quantities and the thermal decomposition of PbCO 3 produces greenhouse gas CO 2, and the process of treating ammonium sulfate desulfurization mother liquor is quite complicated, so green, economical and efficient recovery is an obstacle to be overcome for ...
Desulphurization of damped battery paste by sodium
The sodium carbonate is most frequently used reagent for desulphurization of damped Pb paste. Many technologies suggest processing of paste by NaOH, the PbSO 4 being...
Revive Your Battery: How To Desulfate A Battery With Charger
Monitor the battery closely and ensure proper ventilation. After completing the desulfation cycle, disconnect the charger and test the battery to see if it has regained its capacity. By desulfating a battery with a charger, you can potentially revive …
An environment-friendly process of lead recovery from spent lead …
Therefore, the desulfurization process is usually carried out in an alkaline environment. The second purpose is to reduce PbO 2 in spent lead paste to PbO. Na 2 SO 3, H 2 O 2 and Na 2 S 2 O 3 are commonly used in the reduction process. The typical problems are low reduction rate and large reagent consumption.
Method for desulphurization of battery paste
The method of battery paste desulphurization according to the invention consists in extracting lead(II) sulphate contained in the battery paste with a circulating aqueous solution of a...
Hydrometallurgical recovery of lead from spent lead-acid battery …
All reagents used in this study were of analytical grade. Lead electrowinning was conducted at room temperature (25 ± 2 °C) in a cubic vessel (70 × 70 × 70 mm) with an iron cathode (30 × 50 × 1 mm) and two iron anodes (30 × 50 × 1 mm). ... Recovery of lead from lead paste in spent lead acid battery by hydrometallurgical desulfurization ...
Synthesis of Isothiocyanates Using DMT/NMM/TsO
Synthesis was performed in a "one-pot", two-step procedure, in the presence of organic base (Et 3 N, DBU or NMM), and carbon disulfide via dithiocarbamates, with 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium toluene-4-sulfonate (DMT/NMM/TsO-) as a desulfurization reagent. For the synthesis of aliphatic and aromatic isothiocyanates ...
Desulphurization of the damped lead battery paste with
A hydrothermal method was adopted to strengthen the desulfurization reaction of PbSO4 with the aim of addressing the problem of incomplete desulfurization and large reagent …
Hego Ferrosorp DG Biogas Plant Powdered …
Specifically to solve the problems mentioned above, HeGo Biotec GmbH developed a desulfurization reagent based on iron hydroxide. The precipitation of hydrogen sulfide in the fermenter can be described by the following chemical …
Desulfurization
Desulfurization is a technology used to separate SO 2 from its emitting sources such as exhaust flue gases of fossil-fuel power plants, oil refineries, etc. The crucial requirement to decrease sulfur loading in fuels to nearly zero content is imposed by mandatory environmental and health protocols as well as the accurate tolerance needed for their use in fuel applications.
(PDF) Incorporation of desulfurization wastewater to achieve ultra …
Herein, a novel electrochemical spent lead-acid battery recycling approach with ultra-low energy consumption is proposed in this work, which is achieved via coprocessing with desulfurization ...
Analysis of a more sustainable method for recycling waste lead ...
Pre-desulfurization technology is the key to the entire process. ... Calcium oxide (CaO, AR) was used as an alkali regeneration reagent to regenerate NaOH from the desulfurization mother liquor. Oxalic acid (H 2 C 2 O 4, AR) ... The Zhejiang Tianneng Battery Group Co., Ltd. provided the lead paste and related data used in this study. ...
Incorporation of desulfurization wastewater to achieve ultra-low …
In this recycling method, desulfurization wastewater (containing SO 3 2−) is co-processed with the lead paste (active material of spent lead-acid battery). Energy released …
Revive Your Battery: How To Desulfate A Battery With …
Monitor the battery closely and ensure proper ventilation. After completing the desulfation cycle, disconnect the charger and test the battery to see if it has regained its capacity. By desulfating a battery with a charger, you …
Incorporation of desulfurization wastewater to achieve ultra-low …
Cleaner and more cost-effective battery recycling techniques are still in demand for improving battery''s sustainability. Herein, a novel electrochemical spent lead-acid battery recycling approach with ultra-low energy consumption is proposed in this work, which is achieved via coprocessing with desulfurization wastewater. ... Reagents input ...
Recent advances and applications of reductive desulfurization in ...
For the future we hope that an even more efficient and milder reagent than Raney-Ni (ideally in the form of a catalyst) will be identified, which allows the reductive desulfurization of thiophenes and thioethers. 170 Currently, Raney-Ni is without alternative as a reagent for thiophenes. For thioethers it can be complemented with Li in amine ...
New effective desulfurization reagents | The Journal of Organic …
New effective desulfurization reagents. Howard Alper; Hang-Naim Paik; Cite This: J. Org. Chem. 1977 42 22 3522-3524. Publication Date (Print): October 1, 1977. Publication History. ... Model studies of the desulfurization reactions on metal surfaces and in organometallic complexes. Chemical Reviews 1992, 92 (4), 491-504. DOI: 10.1021 ...
Desulfurization and denitrogenation from flue gas using Fenton reagent ...
The experiments of simultaneous desulfurization and denitrogenation from flue gas were carried out at a bubbling reactor with Fenton reagent. The effects of reaction temperature, concentration of each component in Fenton reagent, initial pH value, gas flow, and initial concentrations of SO 2 and NO in flue gas on the simultaneous removal of SO 2 and NO …
What Is Battery Desulfation
After studying various battery desulfators of the market, we have arranged a list of mostly used battery desulfation techniques below. 1. 555 Timer Circuit The 555 timer circuit, also known as IC 555, is a modified circuit that can work using a standard control mode.
(PDF) Incorporation of desulfurization wastewater to …
Herein, a novel electrochemical spent lead-acid battery recycling approach with ultra-low energy consumption is proposed in this work, which is achieved via coprocessing with desulfurization ...
Pyrometallurgical Processing of Secondary Lead Material: An …
One of the most significant improvement is desulfurization. The battery paste, mainly composed of lead sulfate, is desulfurized with sodium carbonate, ... antimony and tin from the bullion is achieved by temperature control and addition of various reagents such as caustic, sulfur or air to oxidize off the unwanted elements. The widespread usage ...
An evaluation of desulfurization technologies for sulfur removal …
The current industrial method for removal of sulfur from fuels is hydrodesulfurization (HDS), which is a high temperature, high pressure catalytic process. This makes HDS a very costly option for deep desulfurization. Moreover, HDS is not effective for removing heterocyclic sulfur compounds such as dibenzothiophene (DBT) and its derivatives, especially 4,6-dimethyldibenzothiophene …
Efficient Desulfurizer Recycling during Spent Lead-Acid ...
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 …
Analysis of a more sustainable method for recycling waste lead ...
To overcome the low efficiency and high cost of lead paste pre-desulfurization, this study proposed a new sodium-calcium double alkali lead paste pre-desulfurization …
How Long Does It Take To Desulfate A Battery
How long does it take to Desulfate a Battery. The process of desulfating your battery may take 48 hours or more, or even a couple of weeks if extreme sulfation has occurred. ... Desulfating a lead-acid battery with a battery reconditioner or desulfator is considered the conventional method of desulfurization. It is a method where the device ...