Neutralization of Acidic Wastewater from a Steel Plant by Using CaO-Containing Waste Materials from Pulp and Paper Industries
In this study, CaO-containing wastes from pulp and paper industries such as fly ash (FA) and calcined lime mud (LM) were utilized to neutralize and purify acidic wastewaters from the pickling processes in steel mills. The investigations were conducted by laboratory scale trials using four different...
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| Format: | Article |
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MDPI AG
2021-05-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/10/2653 |
| _version_ | 1797533619995017216 |
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| author | Tova Jarnerud Andrey V. Karasev Pär G. Jönsson |
| author_facet | Tova Jarnerud Andrey V. Karasev Pär G. Jönsson |
| author_sort | Tova Jarnerud |
| collection | DOAJ |
| description | In this study, CaO-containing wastes from pulp and paper industries such as fly ash (FA) and calcined lime mud (LM) were utilized to neutralize and purify acidic wastewaters from the pickling processes in steel mills. The investigations were conducted by laboratory scale trials using four different batches of wastewaters and additions of two types of CaO-containing waste materials. Primary lime (PL), which is usually used for the neutralization, was also tested in the same experimental set up in the sake of comparison. The results show that these secondary lime sources can effectively increase the pH of the acidic wastewaters as good as the commonly used primary lime. Therefore, these secondary lime sources could be potential candidates for application in neutralization processes of industrial acidic wastewater treatment. Moreover, concentrations of metals (such as Cr, Fe, Ni, Mo and Zn) can decrease dramatically after neutralization by using secondary lime. The LM has a purification effect from the given metals, similar to the PL. Application of fly ash and calcined lime mud as neutralizing agents can reduce the amount of waste from pulp and paper mills sent to landfill and decrease the need for nature lime materials in the steel industry. |
| first_indexed | 2024-03-10T11:17:06Z |
| format | Article |
| id | doaj.art-76670add525c4921b9116c9901fa854b |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T11:17:06Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-76670add525c4921b9116c9901fa854b2023-11-21T20:20:07ZengMDPI AGMaterials1996-19442021-05-011410265310.3390/ma14102653Neutralization of Acidic Wastewater from a Steel Plant by Using CaO-Containing Waste Materials from Pulp and Paper IndustriesTova Jarnerud0Andrey V. Karasev1Pär G. Jönsson2KTH Royal Institute of Technology, SE-100 44 Stockholm, SwedenKTH Royal Institute of Technology, SE-100 44 Stockholm, SwedenKTH Royal Institute of Technology, SE-100 44 Stockholm, SwedenIn this study, CaO-containing wastes from pulp and paper industries such as fly ash (FA) and calcined lime mud (LM) were utilized to neutralize and purify acidic wastewaters from the pickling processes in steel mills. The investigations were conducted by laboratory scale trials using four different batches of wastewaters and additions of two types of CaO-containing waste materials. Primary lime (PL), which is usually used for the neutralization, was also tested in the same experimental set up in the sake of comparison. The results show that these secondary lime sources can effectively increase the pH of the acidic wastewaters as good as the commonly used primary lime. Therefore, these secondary lime sources could be potential candidates for application in neutralization processes of industrial acidic wastewater treatment. Moreover, concentrations of metals (such as Cr, Fe, Ni, Mo and Zn) can decrease dramatically after neutralization by using secondary lime. The LM has a purification effect from the given metals, similar to the PL. Application of fly ash and calcined lime mud as neutralizing agents can reduce the amount of waste from pulp and paper mills sent to landfill and decrease the need for nature lime materials in the steel industry.https://www.mdpi.com/1996-1944/14/10/2653reusing of wastessecondary limeneutralizationreduce landfillacidic wastewater treatmentsustainable production |
| spellingShingle | Tova Jarnerud Andrey V. Karasev Pär G. Jönsson Neutralization of Acidic Wastewater from a Steel Plant by Using CaO-Containing Waste Materials from Pulp and Paper Industries Materials reusing of wastes secondary lime neutralization reduce landfill acidic wastewater treatment sustainable production |
| title | Neutralization of Acidic Wastewater from a Steel Plant by Using CaO-Containing Waste Materials from Pulp and Paper Industries |
| title_full | Neutralization of Acidic Wastewater from a Steel Plant by Using CaO-Containing Waste Materials from Pulp and Paper Industries |
| title_fullStr | Neutralization of Acidic Wastewater from a Steel Plant by Using CaO-Containing Waste Materials from Pulp and Paper Industries |
| title_full_unstemmed | Neutralization of Acidic Wastewater from a Steel Plant by Using CaO-Containing Waste Materials from Pulp and Paper Industries |
| title_short | Neutralization of Acidic Wastewater from a Steel Plant by Using CaO-Containing Waste Materials from Pulp and Paper Industries |
| title_sort | neutralization of acidic wastewater from a steel plant by using cao containing waste materials from pulp and paper industries |
| topic | reusing of wastes secondary lime neutralization reduce landfill acidic wastewater treatment sustainable production |
| url | https://www.mdpi.com/1996-1944/14/10/2653 |
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