An Innovative Digestion Method : Ultrasound-Assisted Electrochemical Oxidation for the Onsite Extraction of Heavy Metal Elements in Dairy Farm Slurry
Dairy farm slurry is an important biomass resource that can be used as a fertilizer and in energy utilization and chemical production. This study aimed to establish an innovative ultrasound-assisted electrochemical oxidation (UAEO) digestion method for the rapid and onsite analysis of the heavy metal (HM) contamination level of dairy slurry. The effects of UAEO operating parameters on digestion efficiency were tested based on Cu and Zn concentrations in a dairy slurry sample. The results showed that Cu and Zn digestion efficiency was (96.8 ± 2.6) and (98.5 ± 2.9)%, respectively, with the optimal UAEO operating parameters (digestion time: 45 min; ultrasonic power: 400 W; NaCl concentration: 10 g/L). The digestion recovery rate experiments were then operated with spiked samples to verify the digestion effect on broad-spectrum HMs. When the digestion time reached 45 min, all digestion recovery rates exceeded 90%. Meanwhile, free chlorine concentration, particle size distribution, and micromorphology were investigated to demonstrate the digestion mechanism. It was found that 414 mg/L free chorine had theoretically enough oxidative ability, and the ultrasound intervention could deal with the blocky undissolved particles attributed to its crushing capacity. The results of particle size distribution showed that the total volume and bulky particle proportion had an obvious decline. The micromorphology demonstrated that the ultrasound intervention fragmented the bulky particles, and electrochemical oxidation made irregular blocky structures form arc edge and cellular structures. The aforementioned results indicated that UAEO was a novel and efficient method. It was fast and convenient. Additionally, it ensured digestion efficiency and thus had a good application prospect.
Medienart: |
E-Artikel |
---|
Erscheinungsjahr: |
2021 |
---|---|
Erschienen: |
2021 |
Enthalten in: |
Zur Gesamtaufnahme - volume:14 |
---|---|
Enthalten in: |
Materials (Basel, Switzerland) - 14(2021), 16 vom: 13. Aug. |
Sprache: |
Englisch |
---|
Beteiligte Personen: |
Li, Chenyu [VerfasserIn] |
---|
Links: |
---|
Themen: |
Biomass resource |
---|
Anmerkungen: |
Date Revised 31.08.2021 published: Electronic Citation Status PubMed-not-MEDLINE |
---|
doi: |
10.3390/ma14164562 |
---|
funding: |
|
---|---|
Förderinstitution / Projekttitel: |
|
PPN (Katalog-ID): |
NLM329859919 |
---|
LEADER | 01000naa a22002652 4500 | ||
---|---|---|---|
001 | NLM329859919 | ||
003 | DE-627 | ||
005 | 20231225210033.0 | ||
007 | cr uuu---uuuuu | ||
008 | 231225s2021 xx |||||o 00| ||eng c | ||
024 | 7 | |a 10.3390/ma14164562 |2 doi | |
028 | 5 | 2 | |a pubmed24n1099.xml |
035 | |a (DE-627)NLM329859919 | ||
035 | |a (NLM)34443084 | ||
035 | |a (PII)4562 | ||
040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
041 | |a eng | ||
100 | 1 | |a Li, Chenyu |e verfasserin |4 aut | |
245 | 1 | 3 | |a An Innovative Digestion Method |b Ultrasound-Assisted Electrochemical Oxidation for the Onsite Extraction of Heavy Metal Elements in Dairy Farm Slurry |
264 | 1 | |c 2021 | |
336 | |a Text |b txt |2 rdacontent | ||
337 | |a ƒaComputermedien |b c |2 rdamedia | ||
338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
500 | |a Date Revised 31.08.2021 | ||
500 | |a published: Electronic | ||
500 | |a Citation Status PubMed-not-MEDLINE | ||
520 | |a Dairy farm slurry is an important biomass resource that can be used as a fertilizer and in energy utilization and chemical production. This study aimed to establish an innovative ultrasound-assisted electrochemical oxidation (UAEO) digestion method for the rapid and onsite analysis of the heavy metal (HM) contamination level of dairy slurry. The effects of UAEO operating parameters on digestion efficiency were tested based on Cu and Zn concentrations in a dairy slurry sample. The results showed that Cu and Zn digestion efficiency was (96.8 ± 2.6) and (98.5 ± 2.9)%, respectively, with the optimal UAEO operating parameters (digestion time: 45 min; ultrasonic power: 400 W; NaCl concentration: 10 g/L). The digestion recovery rate experiments were then operated with spiked samples to verify the digestion effect on broad-spectrum HMs. When the digestion time reached 45 min, all digestion recovery rates exceeded 90%. Meanwhile, free chlorine concentration, particle size distribution, and micromorphology were investigated to demonstrate the digestion mechanism. It was found that 414 mg/L free chorine had theoretically enough oxidative ability, and the ultrasound intervention could deal with the blocky undissolved particles attributed to its crushing capacity. The results of particle size distribution showed that the total volume and bulky particle proportion had an obvious decline. The micromorphology demonstrated that the ultrasound intervention fragmented the bulky particles, and electrochemical oxidation made irregular blocky structures form arc edge and cellular structures. The aforementioned results indicated that UAEO was a novel and efficient method. It was fast and convenient. Additionally, it ensured digestion efficiency and thus had a good application prospect | ||
650 | 4 | |a Journal Article | |
650 | 4 | |a biomass resource | |
650 | 4 | |a dairy slurry | |
650 | 4 | |a digestion efficient | |
650 | 4 | |a heavy metals | |
650 | 4 | |a ultrasound-assisted electrochemical oxidation | |
700 | 1 | |a Xue, Bin |e verfasserin |4 aut | |
700 | 1 | |a Wang, Shang |e verfasserin |4 aut | |
700 | 1 | |a Zhang, Xi |e verfasserin |4 aut | |
700 | 1 | |a Zhao, Chen |e verfasserin |4 aut | |
700 | 1 | |a Yang, Xiaobo |e verfasserin |4 aut | |
700 | 1 | |a Zhao, Run |e verfasserin |4 aut | |
700 | 1 | |a Dai, Lin |e verfasserin |4 aut | |
700 | 1 | |a Su, Shengqi |e verfasserin |4 aut | |
700 | 1 | |a Xu, Haoqi |e verfasserin |4 aut | |
700 | 1 | |a Shen, Zhiqiang |e verfasserin |4 aut | |
700 | 1 | |a Qiu, Zhigang |e verfasserin |4 aut | |
700 | 1 | |a Wang, Jingfeng |e verfasserin |4 aut | |
773 | 0 | 8 | |i Enthalten in |t Materials (Basel, Switzerland) |d 2009 |g 14(2021), 16 vom: 13. Aug. |w (DE-627)NLM208535349 |x 1996-1944 |7 nnns |
773 | 1 | 8 | |g volume:14 |g year:2021 |g number:16 |g day:13 |g month:08 |
856 | 4 | 0 | |u http://dx.doi.org/10.3390/ma14164562 |3 Volltext |
912 | |a GBV_USEFLAG_A | ||
912 | |a GBV_NLM | ||
951 | |a AR | ||
952 | |d 14 |j 2021 |e 16 |b 13 |c 08 |