Profitable biomethane production from delignified rice straw biomass: the effect of lignin, energy and economic analysis

2020 ◽  
Vol 22 (22) ◽  
pp. 8024-8035
Author(s):  
S. Kavitha ◽  
R. Yukesh Kannah ◽  
S. Kasthuri ◽  
M. Gunasekaran ◽  
Arulazhagan Pugazhendi ◽  
...  
Keyword(s):  
Economic Analysis ◽  
Rice Straw ◽  
Time Saving ◽  
Biomethane Production

A cost and time saving strategy for the recovery of biomethane from rice straw using a novel phase-separated pretreatment.

scholarly journals A Preliminary Study of the Effect of Bioavailable Fe and Co on the Anaerobic Digestion of Rice Straw

Energies ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 577 ◽  
Author(s):  
Gabriele Mancini ◽  
Stefano Papirio ◽  
Piet Lens ◽  
Giovanni Esposito
Keyword(s):  
Fatty Acids ◽  
Anaerobic Digestion ◽  
Rice Straw ◽  
Microbial Growth ◽  
Volatile Fatty Acids ◽  
Limiting Factor ◽  
Bioavailable Fraction ◽  
Essential Trace Elements ◽  
Biomethane Production ◽  
Preliminary Study

Rice straw is an abundant and sustainable substrate for anaerobic digestion (AD), but it is often deficient in essential trace elements (TEs) for proper microbial growth and metabolism. A lack of TEs leads to AD imbalances and suboptimal biogas yields. However, the total TE concentration is not a sufficient indicator of the amount of TEs available to the microorganisms. Therefore, this study investigated the degree of bioavailability of iron (Fe) and cobalt (Co) during the AD of rice straw, and correlated it to the biomethane yields and volatile fatty acids (VFAs) produced. When the two TEs were dosed at 205 µg Fe/g TS and 18 µg Co/g TS of rice straw, the biomethane production was approximately 260 mL CH4/g VS, i.e., similar to that obtained when Fe and Co were not added. Despite an increased bioavailable fraction of 23 and 48% for Fe and Co, respectively, after TEs addition, the AD performance was not enhanced. Moreover, VFAs did not exceed 250 mg HAc/L both in the presence and absence of added TEs, confirming no enhancement of the methanogenesis step. Therefore, the bioavailability of Fe and Co was not a limiting factor for the biomethane production at low total VFAs concentration.

scholarly journals An economic analysis of rice straw microwave pyrolysis for hydrogen-rich fuel gas

RSC Advances ◽  
2017 ◽  
Vol 7 (84) ◽  
pp. 53396-53400 ◽  
Author(s):  
Xuhui Li ◽  
Kunquan Li ◽  
Chunlei Geng ◽  
Hamed El Mashad ◽  
Hua Li ◽  
...  
Keyword(s):  
Economic Analysis ◽  
Rice Straw ◽  
Fuel Gas ◽  
Microwave Pyrolysis ◽  
Biomass Resource ◽  
Potential Applications

Rice straw is an abundant biomass resource, and it can produce hydrogen-rich fuel gas through microwave pyrolysis, so it has many potential applications.

scholarly journals From biogas to biomethane: Techno-economic analysis of an anaerobic digestion power plant in a cattle/buffalo farm in central Italy

2019 ◽  
Vol 50 (3) ◽  
pp. 127-133 ◽  
Author(s):  
Ester Scotto di Perta ◽  
Elena Cervelli ◽  
Maria Pironti di Campagna ◽  
Stefania Pindozzi
Keyword(s):  
Anaerobic Digestion ◽  
Economic Analysis ◽  
Biogas Production ◽  
Central Italy ◽  
Hollow Fibre ◽  
Operating Costs ◽  
Electricity Production ◽  
Small Scale ◽  
Production Plant ◽  
Biomethane Production

Anaerobic digestion (AD) is a mature technology commonly used for manure treatment, both for the stabilisation of waste and for the production of energy. The introduction of new incentives could represent an opportunity for biogas production, when the current feed-in-tariffs, which improved the financial feasibility of AD plants producing electricity will end. This paper examines the feasibility of reconverting an existing AD biogas production plant into a biomethane production plant. The AD plant, in this case study, is a two-stage reactor situated in the centre of Italy and mainly fed with livestock manure from both cows and buffaloes. The economic analysis of two hypotheses is provided: i) continuing the electricity production from biogas after the end of the current incentives (2025); ii) considering the new incentives program for the biomethane and reconverting the plant, using hollow-fibre membranes for the purification of the raw biogas (SEPURAN® Green modules, EnviTec). For this purpose, investment and operating costs, based on plant monitoring data (2105.3 m3 d–1, Biogas production; 4432.9 kWh d–1, electricity production) as well as on market analysis for costs evaluation were considered. The mean biogas production for the considered year was about 30% less than the expected production, indicated by producer, highlighting the need for the optimisation of the management of the reactors. Moreover, based on the averaged methane production (June 2017-June 2018), results show that: i) plant conversion for the biomethane production is not suitable for small-scale plants, due to the high investment costs of upgrading technology (1.2 M€); ii) when current incentives end, the electricity production from biogas in the current plant may not be self-sufficient, due to the highly expensive operating costs. This paper provides a first analysis of the possible fate of the biogas plants under the new incentives.

scholarly journals Techno-economic analysis of bioethanol production from rice straw by liquid-state fermentation

2016 ◽  
Vol 32 ◽  
pp. 012048 ◽  
Author(s):  
M H M Hidayata ◽  
S F Salleh ◽  
T M I Riayatsyahb ◽  
H B Aditiyac ◽  
T M I Mahliaa ◽  
...  
Keyword(s):  
Economic Analysis ◽  
Rice Straw ◽  
Liquid State ◽  
Bioethanol Production

scholarly journals Anaerobic co-digestion of rice straw and de-oiled rice bran for biomethane production

2021 ◽  
Vol 7 ◽  
pp. 704-710
Author(s):  
Bhaskar Jha ◽  
Adya Isha ◽  
Abhinav Trivedi ◽  
Ram Chandra ◽  
Paruchuri M.V. Subbarao
Keyword(s):  
Rice Straw ◽  
Rice Bran ◽  
Biomethane Production
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