PMID- 33201505
OWN - NLM
STAT- MEDLINE
DCOM- 20210318
LR  - 20210318
IS  - 1614-7499 (Electronic)
IS  - 0944-1344 (Linking)
VI  - 28
IP  - 11
DP  - 2021 Mar
TI  - Effectiveness of helminth egg reduction by solar drying and liming of sewage 
      sludge.
PG  - 14080-14091
LID - 10.1007/s11356-020-11619-w [doi]
AB  - The present study is aimed at assessing the effectiveness of solar drying process 
      in terms of helminth egg reduction in sewage sludge (SS) generated from an 
      activated sludge wastewater treatment plant (WWTP) in Marrakesh city (Morocco). 
      It is also engaged to highlight a synergic effect of liming (1% CaO) and solar 
      drying on helminth egg reduction. The solar drying process was conducted for 
      45 days, in summer under a semi-arid climate in a pilot scale polycarbonate-based 
      tunnel (2 m(3)). Before undergoing solar drying process, data showed an important 
      load of helminth eggs including Ascaris sp., Schistosoma spp., Capillaria spp., 
      Trichuris spp., Ankylostome spp., Toxocara spp., and Taenia spp. in limed sludge 
      (LS) and non-limed sludge (NLS) (15.2 and 17.9 eggs/g, respectively). Ascaris 
      eggs were the most abundant (11.2 and 13.5 eggs/g in LS and NLS, respectively). 
      By the end of the solar drying process, a considerable removal of the total 
      helminth eggs was recorded in LS and NLS (92.8% and 91.6%, respectively). A 
      complete removal of Schistosoma spp., Capillaria spp., Trichuris spp., Toxocara 
      spp. and Taenia spp. was noted in LS and NLS. In the case of Ankylostome spp., 
      data showed a total removal in LS and 81% in NLS; however, the final load is in 
      agreement with the standards (0.4 egg/g). As for Ascaris spp., neither liming nor 
      solar drying process allowed a complete removal (91% and 90% in NLS and LS, 
      respectively) and the final load (1.1 egg/g) does not fulfill the WHO 
      requirements for an agricultural use. Principal component analysis (PCA) 
      demonstrated a negative correlation between dry matter (DM) content (hence 
      temperature) and helminth egg concentration. No significant synergic effect of 
      liming and solar drying process was showed by statistical analysis. This is 
      substantiating that temperature is the key parameter involved in helminth egg 
      removal while undergoing solar drying of SS.
FAU - An-Nori, Amal
AU  - An-Nori A
AD  - Agricultural Innovation and Technology Transfer Center (AITTC), Mohammed VI 
      Polytechnic University, Ben Guerir, Morocco.
AD  - Laboratory of Microbial Biotechnologies, Agrosciences and Environment (BioMAgE), 
      Cadi Ayyad University, Marrakesh, Morocco.
FAU - El Fels, Loubna
AU  - El Fels L
AD  - Laboratory of Microbial Biotechnologies, Agrosciences and Environment (BioMAgE), 
      Cadi Ayyad University, Marrakesh, Morocco.
AD  - Higher Institute of Nursing Professions and Health Technics, Marrakesh-Safi, 
      Morocco.
FAU - Ezzariai, Amine
AU  - Ezzariai A
AD  - Laboratory of Microbial Biotechnologies, Agrosciences and Environment (BioMAgE), 
      Cadi Ayyad University, Marrakesh, Morocco.
FAU - El Hayani, Bouchra
AU  - El Hayani B
AD  - Laboratory of Microbial Biotechnologies, Agrosciences and Environment (BioMAgE), 
      Cadi Ayyad University, Marrakesh, Morocco.
FAU - El Mejahed, Khalil
AU  - El Mejahed K
AD  - Agricultural Innovation and Technology Transfer Center (AITTC), Mohammed VI 
      Polytechnic University, Ben Guerir, Morocco.
FAU - El Gharous, Mohamed
AU  - El Gharous M
AD  - Agricultural Innovation and Technology Transfer Center (AITTC), Mohammed VI 
      Polytechnic University, Ben Guerir, Morocco.
FAU - Hafidi, Mohamed
AU  - Hafidi M
AD  - Laboratory of Microbial Biotechnologies, Agrosciences and Environment (BioMAgE), 
      Cadi Ayyad University, Marrakesh, Morocco. hafidi.ucam@gmail.com.
AD  - Agrobiosciences Program, University Mohammed VI Polytechnic (UM6P), Ben Guerir, 
      Morocco. hafidi.ucam@gmail.com.
LA  - eng
PT  - Journal Article
DEP - 20201117
PL  - Germany
TA  - Environ Sci Pollut Res Int
JT  - Environmental science and pollution research international
JID - 9441769
RN  - 0 (Sewage)
SB  - IM
MH  - Animals
MH  - Ascaris
MH  - *Helminths
MH  - Morocco
MH  - *Sewage
MH  - Toxocara
OTO - NOTNLM
OT  - Activated sludge process
OT  - Ascaris
OT  - Helminth eggs
OT  - Liming
OT  - Sewage sludge
OT  - Solar drying
EDAT- 2020/11/18 06:00
MHDA- 2021/03/19 06:00
CRDT- 2020/11/17 12:18
PHST- 2020/04/22 00:00 [received]
PHST- 2020/11/09 00:00 [accepted]
PHST- 2020/11/18 06:00 [pubmed]
PHST- 2021/03/19 06:00 [medline]
PHST- 2020/11/17 12:18 [entrez]
AID - 10.1007/s11356-020-11619-w [pii]
AID - 10.1007/s11356-020-11619-w [doi]
PST - ppublish
SO  - Environ Sci Pollut Res Int. 2021 Mar;28(11):14080-14091. doi: 
      10.1007/s11356-020-11619-w. Epub 2020 Nov 17.