PMID- 35576247
OWN - NLM
STAT- MEDLINE
DCOM- 20220518
LR  - 20220518
IS  - 0273-1223 (Print)
IS  - 0273-1223 (Linking)
VI  - 85
IP  - 9
DP  - 2022 May
TI  - Preparation of structured biochar, its adsorption capacity of N and P and its 
      characterization.
PG  - 2443-2462
LID - 10.2166/wst.2022.143 [doi]
AB  - Structured biochar (SC) was prepared by biochar from cattail-sludge mixture (CS) 
      and high-density polyethylene (HDPE) and treated as an adsorbent, and the 
      KH(2)PO(4) and NH(4)Cl solution were treated as adsorbates, to explore the 
      adsorption capacity of phosphorus (P) and nitrogen (N) on SC in water. A single 
      factor experimental method was employed to determine the optimal parameters for 
      SC. The results showed that: 60% sizing amount, 5 N (cm(2))(-1) molding pressure, 
      160  degrees C molding temperature and 95 min molding time were optimal parameters for SC 
      preparation. The adsorption of P and N on SC conforms to the Langmuir model, with 
      the distribution of adsorption sites on the surface tending to be even. The 
      adsorption of P and N on SC is favorable and spontaneous, and the adsorption 
      tends to be monolayer adsorption with a major role for chemical adsorption. The 
      higher the temperature, the higher the adsorption capacity of P and N on SC is, 
      and the affinity of SC with P is higher than that with N. The pseudo-second-order 
      kinetic model for the adsorption of N and P by SC has a high degree of fit. The 
      pH(pzc) value of SC was 8.57. The hydrophobicity and stability of SC are rather 
      high, with the surface particles closely bonded and increased roughness and pore 
      diameter. The adsorption mechanism of P and N on SC can be attributed to pore 
      filling, electrostatic attraction and hydrogen bonding. The results can provide a 
      new technology for the resource utilization of cattails and sludge, a new idea 
      for the recycling and reuse of biochar, and a basis for the selection of 
      materials for the treatment of eutrophic water bodies.
FAU - Fanfan, Liang
AU  - Fanfan L
AD  - College of Ecology and Environment, Southwest Forestry University, Kunming 
      650224, China E-mail: wycaf@126.com.
FAU - Yungen, Liu
AU  - Yungen L
AD  - College of Ecology and Environment, Southwest Forestry University, Kunming 
      650224, China E-mail: wycaf@126.com.
FAU - Yan, Wang
AU  - Yan W
AD  - College of Ecology and Environment, Southwest Forestry University, Kunming 
      650224, China E-mail: wycaf@126.com.
FAU - Silin, Yang
AU  - Silin Y
AD  - Yunnan Key Laboratory of Ecological Environment Evolution and Pollution Control 
      in Mountainous Rural Areas, Kunming 650224, China.
FAU - Rong, Ma
AU  - Rong M
AD  - Yunnan Key Laboratory of Ecological Environment Evolution and Pollution Control 
      in Mountainous Rural Areas, Kunming 650224, China.
LA  - eng
PT  - Journal Article
PL  - England
TA  - Water Sci Technol
JT  - Water science and technology : a journal of the International Association on 
      Water Pollution Research
JID - 9879497
RN  - 0 (Sewage)
RN  - 0 (Water Pollutants, Chemical)
RN  - 0 (biochar)
RN  - 059QF0KO0R (Water)
RN  - 16291-96-6 (Charcoal)
SB  - IM
MH  - Adsorption
MH  - Charcoal
MH  - Kinetics
MH  - *Sewage
MH  - Water
MH  - *Water Pollutants, Chemical/analysis
EDAT- 2022/05/17 06:00
MHDA- 2022/05/19 06:00
CRDT- 2022/05/16 13:53
PHST- 2022/05/16 13:53 [entrez]
PHST- 2022/05/17 06:00 [pubmed]
PHST- 2022/05/19 06:00 [medline]
AID - 10.2166/wst.2022.143 [doi]
PST - ppublish
SO  - Water Sci Technol. 2022 May;85(9):2443-2462. doi: 10.2166/wst.2022.143.