Phosphorus Recovery and Simultaneous Heavy Metal Removal from ISSA in a Two-Compartment Cell

Fang, Le1; Zhang, Zuotai2; Mei, Ying1; Xu, Linji3; Ren, Ze1

2023

10.3390/w15020226

WATER   影响因子和分区

2073-4441

Traditional acid extraction or electrodialytic remediation (EDR) is inefficient to recover phosphorus (P) from incinerated sewage sludge ash (ISSA). This study used a hybrid process including acid extraction and EDR to extract P from ISSA and remove heavy metals/metals from the P extract sequentially. Specifically, the P extract was obtained by extracting ISSA with 0.2 M H2SO4 and a two-compartment cell was applied in the following EDR process. Constant currents of 15 mA, 35 mA and 50 mA were applied for the electromigration of the heavy metals/metals. Results showed that the efficiency of heavy metals/metals removal fluctuated and was relatively low (approximately 20%) under a current of 15 mA. Increasing the current to 35 mA significantly increased the removal efficiency and that of 50 mA was conspicuous, except Fe, Al and As (<50%). Meanwhile, P gradually immigrated to the catholyte after an EDR duration of 96 h. Consistent with heavy metal/metal immigration results, the pH change and 50 mA voltage drop were dramatic (the pH change was 12 and the voltage drop was 11 V). In addition, flocculent precipitates, which were predominantly Ca, P, Al, Mg and Fe, were found in the catholyte.

electrodialytic remediation phosphorus recovery removal of heavy metals incinerated sewage sludge ash two-compartment cell

SCI ; EI

英语

通讯

Major Scientific and Technological Innovation Projects of Shandong Province[2021CXGC011201] ; National Natural Science Foundation of China[52200142] ; Beijing Normal University[28707-111032107]

Environmental Sciences & Ecology ; Water Resources

Environmental Sciences ; Water Resources

WOS:000927707500001

MDPI

20230513455668

Efficiency ; Extraction ; Metal recovery ; Molecular biology ; Phosphorus ; Sewage sludge

Sewage Treatment:452.2 ; Biology:461.9 ; Metallurgy and Metallography:531 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Production Engineering:913.1

Web of Science

1.Beijing Normal Univ Zhuhai, Adv Inst Nat Sci, RDC Watershed Environm Eco Engn, 18 Jinfeng Rd, Zhuhai 519080, Peoples R China
2.Southern Univ Sci & Technol, Guangdong Prov Key Lab Soil & Groundwater Pollut C, Shenzhen 518055, Peoples R China
3.Chongqing Univ, Fac Environm & Ecol, Chongqing 400044, Peoples R China

Fang, Le,Zhang, Zuotai,Mei, Ying,et al. Phosphorus Recovery and Simultaneous Heavy Metal Removal from ISSA in a Two-Compartment Cell[J]. WATER,2023,15(2).

Fang, Le,Zhang, Zuotai,Mei, Ying,Xu, Linji,&Ren, Ze.(2023).Phosphorus Recovery and Simultaneous Heavy Metal Removal from ISSA in a Two-Compartment Cell.WATER,15(2).

Fang, Le,et al."Phosphorus Recovery and Simultaneous Heavy Metal Removal from ISSA in a Two-Compartment Cell".WATER 15.2(2023).