Potassium alum crystal derived from aluminum salt in water treatment sludge by nanofiltration
The major method used for the recovery of aluminum from water purification sludge is through acidification or alkalization, however, the cost of the acid and alkali limits the amount available for use, and thus results in the low concentration of dissolved aluminum salt; moreover, the metal ions and...
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| Veröffentlicht in: | Journal of material cycles and waste management 2015-07, Vol.17 (3), p.522-528 |
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| creator | Chi, Fung Hwa Cheng, Wen Po Tian, Dun Ren Yu, Ruey Fang Fu, Chi Hua |
| description | The major method used for the recovery of aluminum from water purification sludge is through acidification or alkalization, however, the cost of the acid and alkali limits the amount available for use, and thus results in the low concentration of dissolved aluminum salt; moreover, the metal ions and organic matter dissolved simultaneously in the process will also increase the difficulty in reuse. Therefore, this study used sulfuric acid to dissolve aluminum in the sludge from the water treatment plant, followed by the low price nanofiltration membranes to increase the concentration of aluminum ions, and then adding potassium sulfate to produce the potassium alum crystal, which has less impurity. The influences of the molar ratio of potassium to aluminum and the temperature on the recovery of crystals are investigated. The result showed that there was good crystal recovery when the molar ratio of potassium to aluminum is above 1.6, but the recovery rate decreased as the temperature increased. |
| doi_str_mv | 10.1007/s10163-014-0269-3 |
| format | Article |
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Therefore, this study used sulfuric acid to dissolve aluminum in the sludge from the water treatment plant, followed by the low price nanofiltration membranes to increase the concentration of aluminum ions, and then adding potassium sulfate to produce the potassium alum crystal, which has less impurity. The influences of the molar ratio of potassium to aluminum and the temperature on the recovery of crystals are investigated. The result showed that there was good crystal recovery when the molar ratio of potassium to aluminum is above 1.6, but the recovery rate decreased as the temperature increased.</description><identifier>ISSN: 1438-4957</identifier><identifier>EISSN: 1611-8227</identifier><identifier>DOI: 10.1007/s10163-014-0269-3</identifier><language>eng</language><publisher>Tokyo: Springer Japan</publisher><subject>Acidification ; Alum ; Aluminum ; Civil Engineering ; Crystals ; Deodorants ; Dissolution ; Engineering ; Environmental engineering ; Environmental Management ; Heavy metals ; Metal concentrations ; Metals ; Nanofiltration ; Nanotechnology ; Organic matter ; Original Article ; Potassium ; Recovery ; Recycling ; Salt ; Sludge ; Sulfuric acid ; Waste Management/Waste Technology ; Water filtration ; Water purification ; Water treatment ; Water treatment plants</subject><ispartof>Journal of material cycles and waste management, 2015-07, Vol.17 (3), p.522-528</ispartof><rights>Springer Japan 2014</rights><rights>Springer Japan 2015</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c415t-cf5102b6171c859697594804b2f95339ace26138f65b0d71ac8f422f69e9932e3</citedby><cites>FETCH-LOGICAL-c415t-cf5102b6171c859697594804b2f95339ace26138f65b0d71ac8f422f69e9932e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10163-014-0269-3$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10163-014-0269-3$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51298</link.rule.ids></links><search><creatorcontrib>Chi, Fung Hwa</creatorcontrib><creatorcontrib>Cheng, Wen Po</creatorcontrib><creatorcontrib>Tian, Dun Ren</creatorcontrib><creatorcontrib>Yu, Ruey Fang</creatorcontrib><creatorcontrib>Fu, Chi Hua</creatorcontrib><title>Potassium alum crystal derived from aluminum salt in water treatment sludge by nanofiltration</title><title>Journal of material cycles and waste management</title><addtitle>J Mater Cycles Waste Manag</addtitle><description>The major method used for the recovery of aluminum from water purification sludge is through acidification or alkalization, however, the cost of the acid and alkali limits the amount available for use, and thus results in the low concentration of dissolved aluminum salt; moreover, the metal ions and organic matter dissolved simultaneously in the process will also increase the difficulty in reuse. Therefore, this study used sulfuric acid to dissolve aluminum in the sludge from the water treatment plant, followed by the low price nanofiltration membranes to increase the concentration of aluminum ions, and then adding potassium sulfate to produce the potassium alum crystal, which has less impurity. The influences of the molar ratio of potassium to aluminum and the temperature on the recovery of crystals are investigated. The result showed that there was good crystal recovery when the molar ratio of potassium to aluminum is above 1.6, but the recovery rate decreased as the temperature increased.</description><subject>Acidification</subject><subject>Alum</subject><subject>Aluminum</subject><subject>Civil Engineering</subject><subject>Crystals</subject><subject>Deodorants</subject><subject>Dissolution</subject><subject>Engineering</subject><subject>Environmental engineering</subject><subject>Environmental Management</subject><subject>Heavy metals</subject><subject>Metal concentrations</subject><subject>Metals</subject><subject>Nanofiltration</subject><subject>Nanotechnology</subject><subject>Organic matter</subject><subject>Original Article</subject><subject>Potassium</subject><subject>Recovery</subject><subject>Recycling</subject><subject>Salt</subject><subject>Sludge</subject><subject>Sulfuric acid</subject><subject>Waste Management/Waste Technology</subject><subject>Water 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aluminum salt; moreover, the metal ions and organic matter dissolved simultaneously in the process will also increase the difficulty in reuse. Therefore, this study used sulfuric acid to dissolve aluminum in the sludge from the water treatment plant, followed by the low price nanofiltration membranes to increase the concentration of aluminum ions, and then adding potassium sulfate to produce the potassium alum crystal, which has less impurity. The influences of the molar ratio of potassium to aluminum and the temperature on the recovery of crystals are investigated. The result showed that there was good crystal recovery when the molar ratio of potassium to aluminum is above 1.6, but the recovery rate decreased as the temperature increased.</abstract><cop>Tokyo</cop><pub>Springer Japan</pub><doi>10.1007/s10163-014-0269-3</doi><tpages>7</tpages></addata></record> |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Acidification Alum Aluminum Civil Engineering Crystals Deodorants Dissolution Engineering Environmental engineering Environmental Management Heavy metals Metal concentrations Metals Nanofiltration Nanotechnology Organic matter Original Article Potassium Recovery Recycling Salt Sludge Sulfuric acid Waste Management/Waste Technology Water filtration Water purification Water treatment Water treatment plants |
| title | Potassium alum crystal derived from aluminum salt in water treatment sludge by nanofiltration |
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