Mesophilic anaerobic co-digestion of sewage sludge and orange peel waste

Serrano, Antonio; López, José Ángel Siles; Chica, A.F.; Martín, M.A.; Karouach, Fadoua; Mesfioui, Abdelhalem; Bari, Hassan El

doi:10.1080/09593330.2013.855822

Cited by 38 publications

(13 citation statements)

References 22 publications

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“…Even after the extraction of limonene prior to AD, studies have shown that inhibition of the AD process occurred, particularly when the organic loading rate (OLR) was increased from 3.67-5.10 gVS l -1 d -1 (Martin et al, 2010;Wikandari et al, 2015). In addition, the co-digestion of orange peel and sewage sludge (70:30) resulted in a methane yield of 0.165 l gVS -1 added and the accumulation of volatile fatty acids when the OLR was above 1.6 gVS l -1 d -1 (Serrano et al, 2014). Likewise, furans (furfural, hydroxymethylfurfural (5-HMF)) are produced during the dehydration of pentose-and hexose-sugars locked within the lignin structure (Barakat et al, 2012).…”

Section: Direct Inhibitionmentioning

confidence: 99%

The challenges of anaerobic digestion and the role of biochar in optimizing anaerobic digestion

et al. 2017

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Biochar, like most other adsorbents, is a carbonaceous material, which is formed from the combustion of plant materials, in low-zero oxygen conditions and results in a material, which has the capacity to sorb chemicals onto its surfaces. Currently, research is being carried out to investigate the relevance of biochar in improving the soil ecosystem, digestate quality and most recently the anaerobic digestion process. Anaerobic digestion (AD) of organic substrates provides both a sustainable source of energy and a digestate with the potential to enhance plant growth and soil health. In order to ensure that these benefits are realised, the anaerobic digestion system must be optimized for process stability and high nutrient retention capacity in the digestate produced. Substrate-induced inhibition is a major issue, which can disrupt the stable functioning of the AD system reducing microbial breakdown of the organic waste and formation of methane, which in turn reduces energy output. Likewise, the spreading of digestate on land can often result in nutrient loss, surface runoff and leaching. This review will examine substrate inhibition and their impact on anaerobic digestion, nutrient leaching and their environmental implications, the properties and functionality of biochar material in counteracting these challenges.

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Section: Direct Inhibitionmentioning

confidence: 99%

The challenges of anaerobic digestion and the role of biochar in optimizing anaerobic digestion

et al. 2017

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“…[7] However, it is necessary to determine the possible mixtures and the most important operational variables, such as Y CH 4 /S , organic load rate (OLR) and stability. Gunaseelan [8] studied the anaerobic digestion of fruit and vegetable wastes and observed substantial variations in the methane yield depending on the working temperature (28°C or 35°C), the fruit variety (CH 4 yields of 211 and 384 mL/g VS added were obtained for pyriforme and commune tomato varieties, respectively), and different fruit parts within the same variety.…”

Section: Introductionmentioning

confidence: 99%

Mixture optimization of anaerobic co-digestion of tomato and cucumber waste

Gil

Siles

Serrano

et al. 2015

Environmental Technology

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Greenhouse cultivation has significantly increased the production of vegetables and reduced dependence on environmental conditions. In Mediterranean areas, vegetable crops are nowadays one of the most important sources of organic waste generation. Anaerobic digestion is among the methods used to treat this type of biodegradable waste. However, the selection of the organic wastes to be subjected to this microbial treatment is a crucial aspect due to seasonality and simultaneity of the original crops. In this sense, as waste does not have frequently the proper nutrient balance, co-digestion with other substrates generated in the same geographical area is recommended to ensure the correct development of the process. This work studies the mesophilic co-digestion of tomato waste (TW) and cucumber waste (CW), which are common greenhouse wastes that do not contain an adequate ratio among nutrients (C/N/P) and are generated simultaneously. The influence of the percentage of both wastes in the mixture on the overall performance of the process was evaluated. The combination of TW and CW was found to be feasible in terms of stability, biodegradability and methane yield, which reached a value of 292 mLSTP CH4/g VS (STP: standard temperature and pressure, 0°C and 760 mmHg) for the percentage of tomato in the mixture, which is considered optimal at 55-75%. The most suitable organic load rate was determined for a percentage of 65% of TW, reaching a value of 1562 kg(waste) m(-3) month(-1).

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“…Co digestion of sludge with other feedstocks such as organic residues as glycerol (Athanasoulia et al 2014), landfill leachates (Pastor et al 2013) agricultural wastes or energy crops (Hidaka et al 2013;Galitskaya et al 2014) or food wastes (Serrano et al 2014;Belhadj et al 2014;Powell et al 2013;Dai et al 2013) would increase the efficiency of the process as well as the quality of the digested liquor and sludge. The economic evaluation of developing a biogas unit within a sewage treatment plant accepting more inflows than sewage to increase the methane potential could be based on the work of Karellas et al (2010).…”

Section: Economic Analysis Of the Pretreatment Methodsmentioning

confidence: 99%

Sewage Treatment Plants

2015

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Mesophilic anaerobic co-digestion of sewage sludge and orange peel waste

Cited by 38 publications

References 22 publications

The challenges of anaerobic digestion and the role of biochar in optimizing anaerobic digestion

The challenges of anaerobic digestion and the role of biochar in optimizing anaerobic digestion

Mixture optimization of anaerobic co-digestion of tomato and cucumber waste

Sewage Treatment Plants

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