Semi-Continuous Anaerobic Digestion of Orange Peel Waste: Effect of Activated Carbon Addition and Alkaline Pretreatment on the Process

Calabrò, Paolo S.; Fazzino, Filippo; Fòlino, Adele; Paone, Emilia; Komilis, Dimitrios

doi:10.3390/su11123386

Cited by 36 publications

(20 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The obtained results give insights in light of a growing development of a biorefinery concept, and confirm the production of methanol from biomass as a promising strategy to go towards a low-carbon society, although a more detailed study should be carried out [ 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 ]. For example, the methanol production costs strongly depend on plant capacity.…”

Section: Resultsmentioning

confidence: 56%

Techno-Economic Assessment of Bio-Syngas Production for Methanol Synthesis: A Focus on the Water–Gas Shift and Carbon Capture Sections

2020

View full text Add to dashboard Cite

The biomass-to-methanol process may play an important role in introducing renewables in the industry chain for chemical and fuel production. Gasification is a thermochemical process to produce syngas from biomass, but additional steps are requested to obtain a syngas composition suitable for methanol synthesis. The aim of this work is to perform a computer-aided process simulation to produce methanol starting from a syngas produced by oxygen–steam biomass gasification, whose details are reported in the literature. Syngas from biomass gasification was compressed to 80 bar, which may be considered an optimal pressure for methanol synthesis. The simulation was mainly focused on the water–gas shift/carbon capture sections requested to obtain a syngas with a (H2 – CO2)/(CO + CO2) molar ratio of about 2, which is optimal for methanol synthesis. Both capital and operating costs were calculated as a function of the CO conversion in the water–gas shift (WGS) step and CO2 absorption level in the carbon capture (CC) unit (by Selexol® process). The obtained results show the optimal CO conversion is 40% with CO2 capture from the syngas equal to 95%. The effect of the WGS conversion level on methanol production cost was also assessed. For the optimal case, a methanol production cost equal to 0.540 €/kg was calculated.

show abstract

Section: Resultsmentioning

confidence: 56%

Techno-Economic Assessment of Bio-Syngas Production for Methanol Synthesis: A Focus on the Water–Gas Shift and Carbon Capture Sections

2020

View full text Add to dashboard Cite

show abstract

“…75 His experimental papers aimed to evaluate the effect of different pre-treatments, including granular activated carbon combined with alkaline, zero valent iron, ensiling, aeration, and thermal treatments to enhance methane production by focusing on d-limonene removal. 9,24,27,38,[75][76][77] Journals with most impact, and institutions and countries responsible for the research…”

Section: Authors' Collaboration Networkmentioning

confidence: 99%

Bioenergy production from orange industrial waste: a case study

Jiménez-Castro

Buller

Sganzerla

et al. 2020

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

The present study focuses on a bibliometric analysis of the global production of scientific papers related to the recovery of bioenergy from orange industrial waste or by-products. The study also observed the top-cited papers, international collaborative networks, top countries, and journals. The timespan was from 1900 to 2019, and the Web of Science © database was used. A total of 161 documents (research and review papers) were selected to carry out the investigation. Two main clusters of literature were highlighted, related to the authorship of the top-cited papers and authorship collaboration networks, respectively. Recent scientific publications use different pre-treatments to achieve the best biogas yield with many configurations of the anaerobic digestion system. The data indicated that the countries with most publications are Spain, China, and the USA, and the journals with a higher impact factors related to environmental assessments were responsible for a higher number of publications. In a biorefinery concept, orange peel could be submitted to different pre-treatments to produce bioethanol and methane, as environmentally friendly fuels, and other co-products such as d-limonene and pectin. This study therefore presents trends in bioenergy production from orange industrial by-products with the aim of supporting further research on energy recovery from orange industry solid waste and to assist future decision making in this field of science.

show abstract

“…It should be noted that the inoculum included in the digestion reactor helped to lower the C:N ratio from 27.8 in the CW substrate to 21.7 in the digestion reactor with the inoculum and CW mixture, with an increase in the pH value from 5.53 to 7.75 due to inoculum inclusion. The significance of pH as a key determining factor for AD process, especially in full-scale continuous reactors were highlighted in Calabrò et al [33,34]. In field conditions, it would be important to have a viable inoculum source for initiating digestion and to consider a co-digestion material that can help to neutralize the low pH and is high in nitrogen to ensure that the microbes are not nitrogen-limited.…”

Section: Cumulative Ch 4 Production Based On Vs Addition Into the Digmentioning

confidence: 99%

Enhanced Biogas Production of Cassava Wastewater Using Zeolite and Biochar Additives and Manure Co-Digestion

2020

View full text Add to dashboard Cite

Currently, there are challenges with proper disposal of cassava processing wastewater, and a need for sustainable energy in the cassava industry. This study investigated the impact of co-digestion of cassava wastewater (CW) with livestock manure (poultry litter (PL) and dairy manure (DM)), and porous adsorbents (biochar (B-Char) and zeolite (ZEO)) on energy production and treatment efficiency. Batch anaerobic digestion experiments were conducted, with 16 treatments of CW combined with manure and/or porous adsorbents using triplicate reactors for 48 days. The results showed that CW combined with ZEO (3 g/g total solids (TS)) produced the highest cumulative CH4 (653 mL CH4/g VS), while CW:PL (1:1) produced the most CH4 on a mass basis (17.9 mL CH4/g substrate). The largest reduction in lag phase was observed in the mixture containing CW (1:1), PL (1:1), and B-Char (3 g/g TS), yielding 400 mL CH4/g volatile solids (VS) after 15 days of digestion, which was 84.8% of the total cumulative CH4 from the 48-day trial. Co-digesting CW with ZEO, B-Char, or PL provided the necessary buffer needed for digestion of CW, which improved the process stability and resulted in a significant reduction in chemical oxygen demand (COD). Co-digestion could provide a sustainable strategy for treating and valorizing CW. Scale-up calculations showed that a CW input of 1000–2000 L/d co-digested with PL (1:1) could produce 9403 m3 CH4/yr using a 50 m3 digester, equivalent to 373,327 MJ/yr or 24.9 tons of firewood/year. This system would have a profit of $5642/yr and a $47,805 net present value.

show abstract

Semi-Continuous Anaerobic Digestion of Orange Peel Waste: Effect of Activated Carbon Addition and Alkaline Pretreatment on the Process

Cited by 36 publications

References 38 publications

Techno-Economic Assessment of Bio-Syngas Production for Methanol Synthesis: A Focus on the Water–Gas Shift and Carbon Capture Sections

Techno-Economic Assessment of Bio-Syngas Production for Methanol Synthesis: A Focus on the Water–Gas Shift and Carbon Capture Sections

Bioenergy production from orange industrial waste: a case study

Enhanced Biogas Production of Cassava Wastewater Using Zeolite and Biochar Additives and Manure Co-Digestion

Contact Info

Product

Resources

About