Chronoamperometric and chronopotentiometric investigation of Kraft black liquor

Oliveira, Raisa C. P.; Mateus, Maria Margarida; Santos, Diogo M.F.

doi:10.1016/j.ijhydene.2018.01.046

Cited by 25 publications

(39 citation statements)

References 31 publications

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“…Currently, those pulping processes are concentrating their by-products (BL and SSL) and burning them to recover the cooking chemicals and generate energy [4,[18][19][20]. However, it is known that lignin and lignosulfonates can be used in different applications, giving those side products a considerable economic value [21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…However, it is known that lignin and lignosulfonates can be used in different applications, giving those side products a considerable economic value [21][22][23][24][25][26]. Thus, many works have been done to find an economical and efficient way to extract lignin from BL and SSL [9,19,[27][28][29][30][31][32][33][34]. Electrochemical alternatives have been explored in this field due to their simplicity and low price [9,19,25,30,35,36], which do not involve the use of expensive chemicals or the high investment of other technologies (for example, the acidification of BL [27,28]).…”

Section: Introductionmentioning

confidence: 99%

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Developing a novel direct liquid fuel cell based on pulping liquors

et al. 2022

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This work reports preliminary studies to develop new direct liquid fuel cells that employ two by-products from kraft and sulfite pulp mills as the fuel, namely kraft black liquor (BL) and spent sulfite liquor (SSL). The composition and properties of BL and SSL are characterized, being determined a conductivity 40 times higher for BL than for SSL. The performance of the BL fuel cell (BLFC) and the SSL fuel cell (SSLFC) is assessed employing 5 M hydrogen peroxide solution as the oxidant at different pH values. For the BLFC, an anion-exchange membrane (AEM) is used, and for the SSLFC, both AEM and cation-exchange membrane (CEM) are tested. Different parameters that characterize the fuel cell performance (e.g., peak power density) are determined and compared with similar wastewaterbased fuel cells described in the literature. To the best of the authors' knowledge, it is the first time two pulp mill by-products (BL and SSL) are reported as fuels for application in fuel cells.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Developing a novel direct liquid fuel cell based on pulping liquors

et al. 2022

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“…1,2 Black liquor (BL) is a waste generated during this process. 3 About 7 tons of BL byproduct is produced for 1 ton of pulp production; most of the BL is used as fuel in the recovery boiler. 3 Apart from the cooking chemicals like NaOH and Na 2 S, BL also consists of organic matter such as lignin, hemicellulose, their degradation products and extractives.…”

Section: Introductionmentioning

confidence: 99%

“…3 About 7 tons of BL byproduct is produced for 1 ton of pulp production; most of the BL is used as fuel in the recovery boiler. 3 Apart from the cooking chemicals like NaOH and Na 2 S, BL also consists of organic matter such as lignin, hemicellulose, their degradation products and extractives. 2,3 Viscose fibers are regenerated cellulosic fibers obtained via a complex process involving derivatization of cellulose into sodium cellulose xanthate, which is subsequently dissolved in NaOH solution to give a spinnable viscose solution.…”

Section: Introductionmentioning

confidence: 99%

“…3 Apart from the cooking chemicals like NaOH and Na 2 S, BL also consists of organic matter such as lignin, hemicellulose, their degradation products and extractives. 2,3 Viscose fibers are regenerated cellulosic fibers obtained via a complex process involving derivatization of cellulose into sodium cellulose xanthate, which is subsequently dissolved in NaOH solution to give a spinnable viscose solution. 4,5 This polymer solution is passed through spinnerets in an acidic bath to regenerate fibers.…”

Section: Introductionmentioning

confidence: 99%

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Dope Dyed Viscose Fibers from Black Liquor Treated Carbon Black

et al. 2020

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Black liquor (BL), a byproduct generated during the kraft pulping process, was used as a source of alkaline lignin (AL) to stabilize aqueous dispersions of carbon black (CB). Black liquor-treated carbon black (BL-CB) samples were prepared by varying the BL/CB/water ratio and characterized by scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and Brunauer-Emmett-Teller (BET) surface area. Improvement in dispersion of BL-CB with increased BL content was observed. The dope dyed viscose fibers were spun by addition of BL-CB to the viscose solution. These fibers exhibited deeper color strength than those obtained from conventional CB formulations at a comparable CB loading on the fiber.

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Tuning the Electrode/Electrolyte Interface Enabled by a Trifunctional Inorganic Oligomer Electrolyte Additive for Highly Stable and High‐Rate Zn Anodes

Zhang

Wang

et al. 2023

Small Methods

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The practical application of aqueous Zn‐ion batteries is still greatly hindered by the unstable Zn anode with severe Zn dendrites growth and side reactions. As it is accessible and economical, the exploitation of electrolyte additives is one of the most promising strategies to stabilize the Zn electrode/electrolyte interface. Herein, the penta‐potassium triphosphate (KTPP) as a novel trifunctional electrolyte additive is introduced to tune the electrode/electrolyte interface. First, the KTPP additive can induce an ion‐conducting and mechanically robust solid electrolyte interphase film to stabilize the Zn anode. Second, the KTPP can complex with Zn2+ ions to reconstitute the dissolution sheath structure of the Zn2+ ion. Finally, the K+ cations in KTPP adsorb on the tips of the Zn anode surface as a shielding film to regulate Zn2+ ion flux. As a result, Zn//Zn symmetric cells can achieve significantly prolonged cycling stability (e.g., from 1077 to 3800 h at 1 mA cm−2/1 mAh cm−2, from 256 to 2500 h at 2 mA cm−2/2 mAh cm−2), and ultrahigh cumulative capacity of 6400/7200 mAh cm−2 at high current density (40/20 mA cm−2). A four‐layer Zn–MnO2 pouch full cell with a high capacity of 9 mAh can be constructed, showing impressive practical application potential.

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Chronoamperometric and chronopotentiometric investigation of Kraft black liquor

Cited by 25 publications

References 31 publications

Developing a novel direct liquid fuel cell based on pulping liquors

Developing a novel direct liquid fuel cell based on pulping liquors

Dope Dyed Viscose Fibers from Black Liquor Treated Carbon Black

Tuning the Electrode/Electrolyte Interface Enabled by a Trifunctional Inorganic Oligomer Electrolyte Additive for Highly Stable and High‐Rate Zn Anodes

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