Experimental and CFD study of H2S oxidation by activated carbon prepared from cotton pulp black liquor

2020 ◽  
Vol 134 ◽  
pp. 131-139
Author(s):  
Yong Sun ◽  
Jun He ◽  
Yunshan Wang ◽  
Gang Yang ◽  
Guangzhi Sun ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Black Liquor ◽  
H2s Oxidation

Purification of pulp mill condensates by an adsorptive process on activated carbon

Holzforschung ◽  
2019 ◽  
Vol 73 (6) ◽  
pp. 589-597 ◽  
Author(s):  
José A.F. Gamelas ◽  
Sofia M. Rebola ◽  
Margarita G. Evtyugina ◽  
Valdemar I. Esteves ◽  
Dmitry V. Evtuguin
Keyword(s):  
Activated Carbon ◽  
Volatile Compounds ◽  
Water Cycle ◽  
Black Liquor ◽  
Pulp Mill ◽  
Dimethyl Disulfide ◽  
Pulp Mills ◽  
Wide Range ◽  
New Process ◽  
Pseudo Second Order

Abstract In order to close the water cycle in pulp mills with condensates instead of fresh water, the malodorous/hazardous volatile compounds and colored substances have to be removed by appropriate efficient methods. In the present work, the condensate from the evaporation of black liquor (BL) from a kraft mill was purified by a batch adsorptive process by means of commercial activated carbon (AC). The effluent was found to contain a wide range of aromatic and organosulfur volatile compounds, including toluene, ethylguaicol, syringaldehyde, dimethyl disulfide (DMDS), dimethyl trisulfide (DMTS), 2,3-dimethylthiophene, benzothiol and benzothiophene derivatives. Methanol was the major volatile organic component in the condensate (201 mg l−1), which was, however, poorly adsorbed on the AC surface. Aromatics and organosulfur contaminants were adsorbed almost completely in 2–5 min at 23°C under the optimized AC load (900 mg l−1). The treatment allowed the elimination of up to 99% of the obnoxious odor, color and turbidity of the condensate. The adsorption equilibrium followed the Langmuir model and the pseudo-second-order kinetics. The new process could be incorporated in the pulp mill with relatively low additional reagent costs.

Preparation, characterization and application of lignin-based activated carbon from black liquor lignin by steam activation

2013 ◽  
Vol 228 ◽  
pp. 1074-1082 ◽  
Author(s):  
Kaifang Fu ◽  
Qinyan Yue ◽  
Baoyu Gao ◽  
Yuanyuan Sun ◽  
Liujia Zhu
Keyword(s):  
Activated Carbon ◽  
Black Liquor ◽  
Steam Activation

Spherical microporous/mesoporous activated carbon from pulping black liquor

2011 ◽  
Vol 86 (9) ◽  
pp. 1177-1183 ◽  
Author(s):  
Jian Zhang ◽  
Lianxiang Yu ◽  
Zichen Wang ◽  
Yumei Tian ◽  
Yuning Qu ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Black Liquor ◽  
Mesoporous Activated Carbon

scholarly journals Activated Carbon from Lignin-based Black Liquor Coagulated by Polyaluminium Chloride

2015 ◽  
Vol 16 ◽  
pp. 134-140 ◽  
Author(s):  
Feni Amriani ◽  
Vera Barlianti ◽  
Muryanto ◽  
Ajeng Arum Sari
Keyword(s):  
Activated Carbon ◽  
Black Liquor ◽  
Polyaluminium Chloride

Electric Double-Layer Capacitors from Activated Carbon Derived from Black Liquor

2010 ◽  
Vol 24 (3) ◽  
pp. 1889-1893 ◽  
Author(s):  
Xiao-Yan Zhao ◽  
Jing-Pei Cao ◽  
Kayoko Morishita ◽  
Jun-ichi Ozaki ◽  
Takayuki Takarada
Keyword(s):  
Activated Carbon ◽  
Double Layer ◽  
Electric Double Layer ◽  
Black Liquor ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

Sulfur Impregnation on Activated Carbon Fibers through H2S Oxidation for Vapor Phase Mercury Removal

2006 ◽  
Vol 132 (3) ◽  
pp. 292-300 ◽  
Author(s):  
Wenguo Feng ◽  
Seokjoon Kwon ◽  
Xue Feng ◽  
Eric Borguet ◽  
Radisav D. Vidic
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
Vapor Phase ◽  
Mercury Removal ◽  
Activated Carbon Fibers ◽  
H2s Oxidation

Feasibility of removal S−2 from Kraft black liquor recovery cycle with synthetic adsorbents (Cu-PAC and Cu-GAC)

2020 ◽  
Vol 35 (3) ◽  
pp. 309-324
Author(s):  
Masoume Mollaei ◽  
Mazaher Moeinaddini ◽  
Nematollah Khorasani ◽  
Mohammad Azadfallah ◽  
Amirhooman Hemmasi
Keyword(s):  
Activated Carbon ◽  
Black Liquor ◽  
Order Kinetic ◽  
Recovery Cycle ◽  
Adsorption Sites ◽  
Endothermic Process ◽  
Langmuir Isotherm Model ◽  
Pseudo Second Order ◽  
Sulfide Ions ◽  
Pulp And Paper Industries

AbstractSulfide ions (S−2) derived from Na2S in black liquor, after the pulping process, is the source of production H2S during of black liquor recovery cycle in Kraft pulp and paper industries. Tow adsorbents (Cu-PAC, Cu-GAC) by loading Cu+2 on powder activated carbon (PAC) and granular activated carbon (GAC) were synthesized to created more adsorption sites and were improved their selectivity for removing S−2 from black liquor with 3 level of sulfidity (18, 20 and 22 %). The adsorbents were characterized by BET, FTIR, SEM, and EDX. Adsorption of S−2 for Cu-PAC and Cu-GAC were fitted well with Freundlich and Langmuir isotherm model respectively and both of the adsorbents followed pseudo-second-order kinetic. The results of thermodynamic parameters showed the endothermic process. The removal efficiency results showed Cu-PAC has better performance than Cu-GAC. This is due to the higher specific surface area of Cu-PAC, which has led to more adsorption sites for S−2. By considering appropriate temperature conditions and direct effect of the S−2 on the production of H2S during of black liquor recovery cycle, Cu-PAC will be able to prevent H2S production and odorous the black liquor recovery cycle by removing 79.89 % of the S−2.

scholarly journals Synthesis of activated carbon from black liquor for the application of supercapacitor

2021 ◽  
Author(s):  
Shanmugam Palanisamy ◽  
Senthil Kumar Kandasamy ◽  
Sathesh Thangmuthu ◽  
Dhinesh Kumar Selvarasu ◽  
Marimuthu Panchanathan ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Black Liquor

Development of Immobilized Activated Carbon-Enzyme for Decolorization of Black Liquor

2018 ◽  
Vol 775 ◽  
pp. 402-407 ◽  
Author(s):  
Ajeng Arum Sari ◽  
Ummu Hanifah ◽  
Yusnita Parmawati ◽  
Rahadian Permadi
Keyword(s):  
Activated Carbon ◽  
Functional Group ◽  
Immobilized Enzyme ◽  
Black Liquor ◽  
High Potential ◽  
Crude Enzyme ◽  
Wave Number ◽  
Bead Surface

Combination of activated carbon and crude enzyme that immobilized in alginate was developed immobilized enzyme to decolorize black liquor. Characterization of material and black liquor were analyzed by using SEM and FTIR. The study revealed that immobilized activated carbon-enzyme has high decolorization during the removal of black liquor. It has able to decolorize black liquor up to 97.7% for 5 hours. Further, it also reduced COD as 66.77%, pH 9, and TDS 7.42 g/L. Characterization of black liquor by using FTIR showed that the beads after treatment has addition of functional group such as C-O phenol at wave number 1220.94 cm-1 and C-O-C ether at wave number 1060.85 cm-1 from (C-O-C) ether. Characterization of immobilized activated carbon-enzyme by using SEM showed that this bead before treatment was more granulated than after treatment. After treatment, the bead surface was more homogeneous. Conclusively, immobilized activated carbon-enzyme is a high potential adsorption for the removal of black liquor.

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