Advanced Control for Anaerobic Digestion Processes

Oppong, Grace; O’Brien, M.; McEwan, Matthew; Martin, E.B.; Montague, G.A.

doi:10.1016/b978-0-444-59520-1.50052-x

Cited by 7 publications

(7 citation statements)

References 5 publications

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“…This would overcome the drawbacks of offline monitoring, often marred by low and irregular sampling rates. It is reported, measurement procedure for VS are relatively simpler than for conducting offline VFA, RBP [80]. This makes VS an important digestate quality attribute (among the list of attributes identified in the PAS 110).…”

Section: Review Of Ad Monitoring Applicationsmentioning

confidence: 99%

“…However, process modelling of AD operation to-date only had limited success, largely owing to the dynamic nature, non-linearity and lack of expert knowledge of the whole process [80]. Nevertheless, there has been renewed focus on adequate instrumentation, with rapid sensors/analytical features for reducing the uncertainty associated with the initial conditions and kinetics of the process.…”

Section: Review Of Ad Monitoring Applicationsmentioning

confidence: 99%

“…A detailed review of AD monitoring applications, highlighting the recent advances in Process Analytical Technologies (PAT)/ Theory of Sampling (TOS)/chemometrics approaches, which integrates utilisation of agricultural manure, biomass and industrial organic waste is presented for the Danish co-digestion concept [81]. Besides, there is emphasis on novel application of the soft-sensor concept 3 , for development of model-based estimators to reliably predict unavailable measurements based on less expensive online estimates of unmeasured inputs for an AD system [80]. Albeit, owing to lack of availability of a perfectly instrumented AD facility, monitoring key variables at the necessary sampling rate, most approaches for soft sensor development to-date rely on simulation data for modelling the inherent AD parameters, mainly for quality assurance of the process model.…”

Section: Review Of Ad Monitoring Applicationsmentioning

confidence: 99%

“…Currently (2014), there are limited approaches for digestate quality monitoring and they are all based on offline instrumentation [80]. Albeit, PAS 110 Clause 10 provides guidance on obtaining representative samples of all three types of digestates (whole, fibre, liquor) via one or more sampling access points appropriately located in the digestate production/storage system prior to its use [79].…”

Section: Review Of Ad Monitoring Applicationsmentioning

confidence: 99%

See 3 more Smart Citations

Emerging perspectives on environmental burden minimisation initiatives from anaerobic digestion technologies for community scale biomass valorisation

Tiwary

Williams

Pant

et al. 2015

Renewable and Sustainable Energy Reviews

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This paper provides an extensive review of anaerobic digestion (AD) systems, with a specific focus on community scale digesters for urban applications, processing either municipal organic waste exclusively or as mix feed. Emphasis is placed on reducing the systems scale environmental impact of AD technologies, including pre-and post-treatment stages, alongside biogas production. Developments to-date in AD system research in Europe and in the Asia region have been compared, providing a comprehensive evaluation of current practice, elucidating the areas of further potentials.The scope of this review is two-fold -one, covering AD technologies including a cohort of simple and integrated wet and dry systems, which can be operated as continuous flow designs in single-or multi-stages. Two, focusing more on practices in digestate handling that minimise environmental impacts arising from their storage and land application. From an environmental perspective, we note the following trends emerging in the literature for processing urban waste that need further exploitation: dry AD (60-85% moisture) is suitable for low organic loads, mainly owing to resource savings in terms of water usage; co-digestion has shown better buffering capability, especially for two-stage digestion of food-based feed stocks; separating the digestate into liquid/solid fractions is effective for handling postdigestion emissions, mainly for mitigating ammonia volatilisation to air and phosphate leaching to soil.We report responses to a survey, conducted for this review, highlighting the contemporary issues and challenges -with particular focus on the operational, social and management issues from an Indian perspective. There is need for follow-up of running plants to ensure their environmental performance. Such initiatives will have to consider managing of pollution footprints from AD, alongside the current drive for its widespread implementation for two incentives: greenhouse gas mitigation and fossil-fuel independence.

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Section: Review Of Ad Monitoring Applicationsmentioning

confidence: 99%

Section: Review Of Ad Monitoring Applicationsmentioning

confidence: 99%

Section: Review Of Ad Monitoring Applicationsmentioning

confidence: 99%

Section: Review Of Ad Monitoring Applicationsmentioning

confidence: 99%

See 2 more Smart Citations

Emerging perspectives on environmental burden minimisation initiatives from anaerobic digestion technologies for community scale biomass valorisation

Tiwary

Williams

Pant

et al. 2015

Renewable and Sustainable Energy Reviews

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“…Free ammonia concentration is affected mainly by temperature, pH and total 46 ammoniacal nitrogen (TAN) concentration (Chambers and Taylor, 2013). Whereas a number of 47 multivariate data analysis protocols using advanced sensor technologies have become available, the 48 majority of these are currently (2014) limited to AD process monitoring; there are limited approaches for 49 digestate quality monitoring and they are all based on offline instrumentation (Oppong et al, 2012). 50…”

mentioning

confidence: 99%

Assessment and mitigation of the environmental burdens to air from land applied food-based digestate

Tiwary

Williams

Pant

et al. 2015

Environmental Pollution

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Highlights:· In situ air pollution assessment of land applied digestate is performed. · Environmental burden minimisation scenarios for digestate bio fertiliser presented. · Food-based digestate show high ammonia volatilisation potential. · Soil incorporated digestate effectively reduces NH 3 but elevates N 2 O emissions. · Managing digestate emissions mitigate both climate change and air pollution. Abstract (limit 150 words only)Anaerobic digestion (AD) of putrescible urban waste for energy recovery has seen rapid growth over recent years. In order to ascertain its systems scale sustainability, however, determination of the environmental fate of the large volume of digestate generated during the process is indispensable. This paper evaluates the environmental burdens to air associated with land applied food-based digestate in terms of primary pollutants (ammonia, nitrogen dioxide) and greenhouse gases (methane and nitrous oxide). The assessments have been made in two stages -first, the emissions from surface application of food-based digestate are quantified for the business as usual (BAU). In the next step, environmental burden minimisation potentials for the following three mitigation measures are estimated -mixed waste digestate (MWD), soil-incorporated digestate (SID), and post-methanated digestate (PMD). Overall, the mitigation scenarios demonstrated considerable NH 3 , CH 4 and N 2 O burden minimisation potentials, with positive implications for both climate change and urban pollution. Keywords: anaerobic digestion; bio fertilizer; digestate; environmental burdens; OFMSWCapsule abstract: In situ monitoring and analyses demonstrate the role of post-processing in greenhouse gases and air pollution mitigation from food-based digestate use as bio fertiliser. Highlights:· In situ air pollution assessment of land applied digestate is performed. · Environmental burden minimisation scenarios for digestate bio fertiliser presented. · Food-based digestate show high ammonia volatilisation potential. · Soil incorporated digestate effectively reduces NH 3 but elevates N 2 O emissions. · Managing digestate emissions mitigate both climate change and air pollution.3

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Economic Viability and Environmental Impact of Centralized Biogas Plants in Croatia

Novosel¹,

Pukšec²,

Duić³

2014

Computer Aided Chemical Engineering

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Advanced Control for Anaerobic Digestion Processes

Cited by 7 publications

References 5 publications

Emerging perspectives on environmental burden minimisation initiatives from anaerobic digestion technologies for community scale biomass valorisation

Emerging perspectives on environmental burden minimisation initiatives from anaerobic digestion technologies for community scale biomass valorisation

Assessment and mitigation of the environmental burdens to air from land applied food-based digestate

Economic Viability and Environmental Impact of Centralized Biogas Plants in Croatia

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