A novel integrated single-stage anaerobic co-digestion and oxidation ditch-membrane bioreactor system for food waste management and building wastewater recycling

2021 ◽  
Vol 279 ◽  
pp. 111624
Author(s):  
Arpapan Satayavibul ◽  
Chavalit Ratanatamskul
2018 ◽  
Vol 25 (19) ◽  
pp. 18728-18736 ◽  
Author(s):  
Xiaobiao Zhu ◽  
Mengqi Li ◽  
Dehua Ma ◽  
Lujun Chen

2021 ◽  
Vol 13 (12) ◽  
pp. 6894
Author(s):  
Shakira R. Hobbs ◽  
Tyler M. Harris ◽  
William J. Barr ◽  
Amy E. Landis

The environmental impacts of five waste management scenarios for polylactic acid (PLA)-based bioplastics and food waste were quantified using life cycle assessment. Laboratory experiments have demonstrated the potential for a pretreatment process to accelerate the degradation of bioplastics and were modeled in two of the five scenarios assessed. The five scenarios analyzed in this study were: (1a) Anaerobic digestion (1b) Anaerobic digestion with pretreatment; (2a) Compost; (2a) Compost with pretreatment; (3) Landfill. Results suggested that food waste and pretreated bioplastics disposed of with an anaerobic digester offers life cycle and environmental net total benefits (environmental advantages/offsets) in several areas: ecotoxicity (−81.38 CTUe), eutrophication (0 kg N eq), cumulative energy demand (−1.79 MJ), global warming potential (0.19 kg CO2), and human health non-carcinogenic (−2.52 CTuh). Normalized results across all impact categories show that anaerobically digesting food waste and bioplastics offer the most offsets for ecotoxicity, eutrophication, cumulative energy demand and non-carcinogenic. Implications from this study can lead to nutrient and energy recovery from an anaerobic digester that can diversify the types of fertilizers and decrease landfill waste while decreasing dependency on non-renewable technologies. Thus, using anaerobic digestion to manage bioplastics and food waste should be further explored as a viable and sustainable solution for waste management.


2021 ◽  
Vol 47 (3) ◽  
pp. 488-498
Author(s):  
Innocent A. Jereme ◽  
Chamhuri Siwar ◽  
Rawshan Ara Begum ◽  
Basri Abdul Talib

Most local authorities in Malaysia spent as much as 60-70 percent of their annual budget to dispose food waste together with other municipal solid wastes to landfills. It is time for Malaysians to start reducing food waste through sustainable method, as it is becoming an uphill task to manage food wastes generated in Malaysia. When households reduce the amount of food waste generated in a sustainable way, it could help reduce cost, and other related bills for households, and as well in running their other daily activities. The main objective of this study is to assess how sociodemographic factors of households in Selangor and Terengganu influence their behaviour towards participation in sustainable food wastes management program. The study applied purposive nonrandom sampling consisting of 333 respondents, 257 were from Selangor and 76 from Terengganu. Primary data was collected through structured questionnaire. Descriptive and logistics regression model analysis were used to analyze the data. Findings have shown 48.7 percent of Terengganu respondents spent not more than RM100 on food per week, while Selangor had 41.2 percent within the same period who spent such amount. 35.4 percent of Selangor respondents spent between RM101-200 compared to Terengganu which spent same amount at 30.3 percent within the same periods. The survey shows 43.2 percent of Selangor households disposed 1-3kg food wastes, while Terengganu on the other hand had 51.3 percent who disposed same quantities of food wastes per week. Respondents with higher education, those on government jobs, small family size and ethnicity have significant impacts on the respondents' behaviour towards participation in sustainable food waste management program. Note: US$1=RM4.09


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