Blasius Jandir Pereira, Contrera Ronan Cleber, Maintinguer Sandra Imaculada, Alves de Castro Marcus Cesar Avezum
Graduate Program in Geosciences and Environment, Institute of Geosciences and Exact Sciences, São Paulo State University, Júio de Mesquita Filho (UNESP), Av. 24-A, Bela Vista, CEP: 13506-900, Rio Claro, SP, Brazil.
Hydraulic and Environmental Engineering Department (PhD), Escola Politécnica/ School of Engineering (EP), Universidade de São Paulo (USP), Av. Prof. Almeida Prado, 83 trav. 2, Cidade Universitária, CEP: 05508-900, São Paulo, SP, Brazil.
Biotechnol Rep (Amst). 2020 Jul 10;27:e00503. doi: 10.1016/j.btre.2020.e00503. eCollection 2020 Sep.
In Brazil, a significant amount of organic waste is produced in households and restaurants. This study thus aimed to determine the ideal conditions for generating methane from the treatment of household waste by anaerobic digestion, under mesophilic (37 °C) and thermophilic (55 °C) conditions, to determine the maximum organic loading rate (OLR) in the reactors, and to evaluate kinetic parameters by statistical models: Modified Gompertz, First-Order, Logistic and Transference functions. The experiments were conducted in anaerobic batch reactors. Different proportions of pre-prepared waste (PPW)/leftover waste (LW) were used: 100/0, 75/25, 50/50, 25/75, and 0/100 and different ORL: 0.15; 0.30; 0.45; 0.60; and 0.90 g TVS (Total Volatile Solids).L.d. For both conditions, the optimal proportions of PPW/LW were 100/0 and 75/25 %. Under mesophilic condition, the best results were observed (869 mL of CH.g TVS). The maximum organic load was 0.30 g TVS.L.d. The best data adjustment was performed by the Transference function.
在巴西，家庭和餐馆会产生大量有机废物。因此，本研究旨在确定在中温（37°C）和高温（55°C）条件下，通过厌氧消化处理家庭废物产生甲烷的理想条件，确定反应器中的最大有机负荷率（OLR），并通过统计模型（修正的Gompertz模型、一级模型、逻辑模型和传递函数）评估动力学参数。实验在厌氧间歇反应器中进行。使用了不同比例的预制备废物（PPW）/剩余废物（LW）：100/0、75/25、50/50、25/75和0/100，以及不同的有机负荷率（ORL）：0.15；0.30；0.45；0.60；和0.90 g总挥发性固体（TVS）/L·d。在两种条件下，PPW/LW的最佳比例均为100/0和75/25%。在中温条件下，观察到了最佳结果（869 mL CH₄/g TVS）。最大有机负荷为0.30 g TVS/L·d。通过传递函数进行了最佳数据拟合。
