Community diversity and abundance of ammonia‐oxidizing archaea and bacteria in shrimp pond sediment at different culture stages

2020 ◽  
Author(s):  
D. Wei ◽  
S. Zeng ◽  
D. Hou ◽  
R. Zhou ◽  
C. Xing ◽  
...  
Keyword(s):  
Community Diversity ◽  
Shrimp Pond ◽  
Pond Sediment ◽  
Ammonia Oxidizing Archaea

Estimation of Biogas Production from Shrimp Pond Sediment Using the Artificial Intelligence

2012 ◽  
Vol 260-261 ◽  
pp. 695-700
Author(s):  
J. Srisertpol ◽  
P. Srinakorn ◽  
A. Kheawnak ◽  
K. Chamniprasart
Keyword(s):  
Renewable Energy ◽  
Anaerobic Digestion ◽  
Flow Rate ◽  
Environmental Planning ◽  
Biogas Production ◽  
Biochemical Properties ◽  
Shrimp Pond ◽  
Pond Sediment ◽  
Balance Principle ◽  
The Mathematical Model

A biogas production development increases renewable energy and reduces the environmental impact which is caused by carbon dioxide. Thisis important for energy and environmental planning in Thailand. The biogas production by anaerobic digestionproduces methane that can be used as renewable energy. This research was to study biogas production from the anaerobic digestion of shrimp pond sediment by the batch reaction, an estimation of the mathematical model using theArtificial Intelligence (AI) technique and the treatment of shrimp pond sediment.The mass balance principle to create mathematical modeling and decompositions of organic matter into biogas were used to compare the experimental dataincluding, temperature, pH, biogas flow rate and biochemical properties of the shrimp pond sediment. From the results, mathematical models can estimate the dynamic response of the biogas flow rate and factors that affectedthe biogas productions. The treatment of shrimp pond sediment by anaerobic digestion process could reduce TS, TDS, TSS, TVS, BOD, COD and ECby81-89%, 52-60%, 95-99%, 80-89%, 86-95% , 85-95% and 12-22 % respectively.

scholarly journals REMOVAL OF FLOUROQUINOLONE ANTIMICROBIALS (CIPROFLOXACIN AND NORFLOXACIN) FROM SHRIMP POND SEDIMENT DURING COMPOSTING

2018 ◽  
Vol 56 (2C) ◽  
pp. 178-185
Author(s):  
Nguyen Dac Kien
Keyword(s):  
Removal Efficiency ◽  
Brackish Water ◽  
Weak Base ◽  
Shrimp Pond ◽  
Composting Process ◽  
Salty Water ◽  
Ph Values ◽  
Pond Sediment ◽  
Ciprofloxacin Removal

This study aimed to investigate the removal of ciprofloxacin and norfloxacin from shrimp pond sediment during composting process with different antimicrobial concentrations. The results showed that after 40 days of composting, temperature varied from 25 to 55 oC. The highest temperature was on the day 20th. The pH values reduced along with composting time from weak base to neutral. During the composting processes, the removal efficiency of norfloxacin found in the range of 32.5–87.5 % depends on the initial antimicrobials concentrations. For ciprofloxacin, after 20 days of composting, the removal efficiency obtained was around 55 and 45 % and pH was 8.5 and 5.0. Salinity significantly affected ciprofloxacin removal that created remarkably efficiency reduction of ciprofloxacin in salty water as compared to fresh- and brackish water. However, no differences in removal efficiency of norfloxacin were observed between fresh and brackish water. The composted fertilizer was dark brown in color and odorless, contained 15.7-18.8 % C; 2.05 – 2.15 % N; and C/N ratio was 7.5–10.95. This indicated that compost fertilizer was completely decomposed.   

scholarly journals Microbial Community Diversity and Vertical Distribution in a Columnar Sediment of Maluku Strait

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Yan Wang ◽  
Fuchao Li ◽  
Jin Zhao ◽  
Huaxin Chen ◽  
Peng Jiang ◽  
...  
Keyword(s):  
16S Rrna ◽  
Vertical Distribution ◽  
Surface Sediment ◽  
Ammonia Oxidation ◽  
Community Diversity ◽  
Ocean Current ◽  
Phylogenetic Groups ◽  
Sediment Samples ◽  
Bacterial Phyla ◽  
Ammonia Oxidizing Archaea

The sediment samples were collected from Maluku Strait at a depth of 1250 m, which is influenced by Mindanao Current and Indonesian Throughflow. Based on 16S rRNA clone libraries, the community structure and vertical distribution of archaea and bacteria were studied in a columnar sediment of 2m in length. From the surface sediment, 16S sequences were derived from fourteen bacterial phyla (Gammaproteobacteria, Planctomycetes, Alphaproteobacteria, Deltproteobacteria were dominant), but were limited to two groups of archaea: Crenarchaeota (99%) and Euryarchaeota (1%). Besides, 90% of the archaea clones were ammonia oxidation-related which indicated that the ammonia-oxidizing archaea might make a significant contribution to the chemosynthesis in the surface sediment. Contrastively in the bottom sediment, six bacterial phylogenetic groups were obtained (Gammaproteobacteria and Firmicutes were absolutely dominant), however no archaea 16S rRNA was detected. The microbial diversity of surface sediment was much higher than the bottom and seven unique bacterial phyla were obtained from two sediment respectively. The geochemical elements analysis revealed that the content of C, TOC and S in the surface sediment was much higher than the bottom, but the content of P is contrary. The microbial communities might be in response to the geochemical substance transfer and deposit influenced by the ocean current and it deserves further study compared with the other sediment samples in this area.

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