Comparison of sludges produced from two different recirculating aquaculture systems (RAS) for recycle and disposal

被引:10
|
作者
Maigual-Enriquez, Yemall Alexander [1 ]
Domingos Maia, Amanda Alves [1 ]
Guerrero-Romero, Camilo Lenin [2 ]
Matsumoto, Tsunao [3 ]
Rangel, Elidiane Cipriano [1 ]
de Morais, Leandro Cardoso [1 ]
机构
[1] Sao Paulo State Univ UNESP Julio de Mesquita Filh, Inst Sci & Technol, Av Tres Marco 511, BR-18087180 Sao Paulo, Brazil
[2] Univ Narino, Hidrobiol Resources Dept, Cll 18 Cr 50,Ciudad Univ, San Juan De Pasto, Narino, Colombia
[3] Sao Paulo State Univ UNESP Julio de Mesquita Filh, Civil Engn Dept, Engn Ilha Solteira, Alameda Bahia 550, BR-15385000 Sao Paulo, Brazil
基金
巴西圣保罗研究基金会;
关键词
Biological Sludge; Recirculating Aquaculture System; Pyrolysis; Combustion; TG/DTG; DRIED SEWAGE-SLUDGE; THERMOGRAVIMETRIC ANALYSIS; WASTE; PYROLYSIS; COMBUSTION; WATER; EFFICIENCY; KINETICS; REMOVAL; REACTOR;
D O I
10.1016/j.aquaculture.2018.11.060
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Sludges from Submerged Biofilter (SBF) and Aerobic Three Phase Airlift Fluidized Bed Reactor with Circulation in Concentric Tubes (AAFBR-CT) wastewater treatment of recirculating aquaculture systems (RAS) were evaluated by thermogravimetric analysis. It was considered a microstructural analysis by SEM-EDX and XRD to identify the sample composition. SBF and AAFBR-CT sludge, presented three stages for both combustion and pyrolysis. The first stage to 180 degrees C was characterized by loss of water, low-stability organic compounds, the second stage, between 235 degrees C and 385 degrees C was characterized by decomposition of carbohydrate, lipids, and proteins. The third stage, between 420 degrees C and 540 degrees C represents a decomposition of monounsaturated, polyunsaturated fatty acids and amino groups. This sludge had a high ash content and is not viable to use for energy purposes. Presence of granular material was revealed by SEM. XRD analysis only identified SiO2. The sludges generated by RAS could be used in brick and ceramic manufacture, adsorbent material or for phosphorus recovery.
引用
收藏
页码:87 / 96
页数:10
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