1
|
Usmani Z, Sharma M, Diwan D, Tripathi M, Whale E, Jayakody LN, Moreau B, Thakur VK, Tuohy M, Gupta VK. Valorization of sugar beet pulp to value-added products: A review. BIORESOURCE TECHNOLOGY 2022; 346:126580. [PMID: 34923076 DOI: 10.1016/j.biortech.2021.126580] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/10/2021] [Accepted: 12/11/2021] [Indexed: 06/14/2023]
Abstract
The processing of sugar beet in the sugar production industry releases huge amounts of sugar beet pulp as waste which can be considered a valuable by-product as a source of cellulose, hemicellulose, and pectin. Valorization of sugar beet pulp into value added products occurs through acid hydrolysis, hydrothermal techniques, and enzymatic hydrolysis. Biochemical conversion of beet pulp into simple fermentable sugars for producing value added products occurs through enzymatic hydrolysis is a cost effective and eco-friendly process. While beet pulp has predominantly been used as a fodder for livestock, recent developments in its biotechnological valorization have unlocked its value as a feedstock in the production of biofuels, biohydrogen, biodegradable plastics, and platform chemicals such as lactic acid, citric acid, alcohols, microbial enzymes, single cell proteins, and pectic oligosaccharides. This review brings forward recent biotechnological developments made in the valorization of sugar beet pulp into valuable products.
Collapse
Affiliation(s)
- Zeba Usmani
- Department of Applied Biology, University of Science and Technology, Meghalaya 793101, India
| | - Minaxi Sharma
- Department of Applied Biology, University of Science and Technology, Meghalaya 793101, India
| | - Deepti Diwan
- Washington University, School of Medicine, Saint Louis, MO 63110, USA
| | - Manikant Tripathi
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, Uttar Pradesh, India
| | - Eric Whale
- CelluComp Ltd., Unit 3, West Dock, Harbour Place, Burntisland KY3 9DW, UK
| | - Lahiru N Jayakody
- School of Biological Sciences, Southern Illinois University,1125 Lincoln Drive, Carbondale, IL 62901, USA
| | - Benoît Moreau
- Laboratoire de "Chimie verte et Produits Biobasés", Haute Ecole Provinciale du Hainaut-Condorcet, Département AgroBioscience et Chimie, 11, rue de la Sucrerie, 7800 Ath, Belgium
| | - Vijay Kumar Thakur
- Biorefining and Advanced Materials Research Center, SRUC, Kings Buildings, West Mains Road, Edinburgh EH9 3JG, UK
| | - Maria Tuohy
- Biochemistry, School of Natural Sciences, National University of Ireland Galway, University Road, Galway City, Ireland
| | - Vijai Kumar Gupta
- Biorefining and Advanced Materials Research Center, SRUC, Kings Buildings, West Mains Road, Edinburgh EH9 3JG, UK; Center for Safe and Improved Food, SRUC, Kings Buildings, West Mains Road, Edinburgh EH9 3JG, UK.
| |
Collapse
|
2
|
The Effects of Soil Application of Digestate Enriched with P, K, Mg and B on Yield and Processing Value of Sugar Beets. FERMENTATION 2021. [DOI: 10.3390/fermentation7040241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The aim of this research was to find out if the supplementation of digestate, a by-product of the anaerobic digestion of sugar beet pulp, with phosphorus, potassium, magnesium and boron can improve digestate performance as a soil amendment. The materials of this study were: digestate and sugar beet roots (Beta vulgaris cv. Fighter). A field trial was carried out on sugar beet growth under soil application conditions of solid and liquid digestate fractions with or without supplementation with P, K, Mg and B. It was shown that the root yield obtained from the plots amended with digestate supplemented with P, K, Mg and B was higher compared to the yield of other treatments. Soil amendment with digestate supplemented with P, K, Mg and B affected quality parameters of sugar beet roots. An increase in the following parameters under the effects of enriched digestate application was found: sucrose content, dry residue, pomace content, inverted sugars, α-amino and amide nitrogen fractions, as well as sodium and potassium content. A reduction in the content of conductometric ash was noted but this difference was not proven. The enrichment of digestate with P, K, Mg and B resulted in the beneficial modification of beet roots’ processing parameters with the exception of the predicted content of sugar in molasses. In the case of the liquid fraction and its supplementation with P, K, Mg and B, six among eleven technological quality parameters were increased.
Collapse
|
3
|
Agricultural Residue Management for Sustainable Power Generation: The Poland Case Study. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11135907] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The European Union has set targets for renewable energy utilization. Poland is a member of the EU, and its authorities support an increase in renewable energy use. The background of this study is based on the role of renewable energy sources in improving energy security and mitigation of climate change. Agricultural waste is of a significant role in bioenergy. However, there is a lack of integrated methodology for the measurement of its potential. The possibility of developing an integrated evaluation methodology for renewable energy potential and its spatial distribution was assumed as the hypothesis. The novelty of this study is the integration of two renewable energy sources: crop residues and animal husbandry waste (for biogas). To determine agricultural waste energy potential, we took into account straw requirements for stock-raising and soil conservation. The total energy potential of agricultural waste was estimated at 279.94 PJ. It can cover up to 15% of national power generation. The spatial distribution of the agricultural residue energy potential was examined. This information can be used to predict appropriate locations for biomass-based power generation facilities. The potential reduction in carbon dioxide emissions ranges from 25.7 to 33.5 Mt per year.
Collapse
|
4
|
Bochmann G, Pesta G, Rachbauer L, Gabauer W. Anaerobic Digestion of Pretreated Industrial Residues and Their Energetic Process Integration. Front Bioeng Biotechnol 2020; 8:487. [PMID: 32637397 PMCID: PMC7318785 DOI: 10.3389/fbioe.2020.00487] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 04/27/2020] [Indexed: 11/13/2022] Open
Abstract
The food and beverage industry offers a wide range of organic feedstocks for use in biogas production by means of anaerobic digestion (AD). Microorganisms convert organic compounds—solid, pasty, or liquid ones—within four steps to biogas mainly consisting of CH4 and CO2. Therefore, various conversion technologies are available with several examples worldwide to show for the successful implementation of biogas technologies on site. The food and beverage industry offer a huge potential for biogas technologies due to the sheer amount of process residues and their concurrent requirement for heat and power. The following study analyzes specific industries with respect to their implementation potential based on arising waste and heat and power demand. Due to their chemical composition, several feedstocks are resistant against microbiological degradation to a great extent. A combination of physical-, chemical-, and microbiological pretreatment are used to increase the biological availability of the feedstock. The following examples will discuss how to best implement AD technology in industrial processes. The brewery industry, dairy production, slaughterhouses, and sugar industry will serve as examples.
Collapse
Affiliation(s)
- Günther Bochmann
- Environmental Biotechnology, Department IFA-Tulln, University of Natural Resources and Life Sciences, Vienna, Austria
| | | | | | - Wolfgang Gabauer
- Environmental Biotechnology, Department IFA-Tulln, University of Natural Resources and Life Sciences, Vienna, Austria
| |
Collapse
|
5
|
Dereli RK, Wang X, van der Zee FP, van Lier JB. Biological performance and sludge filterability of anaerobic membrane bioreactors under nitrogen limited and supplied conditions. WATER RESEARCH 2018; 137:164-172. [PMID: 29549798 DOI: 10.1016/j.watres.2018.03.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 03/02/2018] [Accepted: 03/07/2018] [Indexed: 06/08/2023]
Abstract
The impact of nitrogen on biological performance and sludge filterability of anaerobic membrane bioreactors was investigated in two lab-scale cross-flow anaerobic membrane bioreactors that were fed with cheese whey at two different COD:TKN ratios (50 and 190). Nitrogen deprivation adversely affected the biological treatment performance and reactor stability, as indicated by volatile fatty acids accumulation. On the other hand, nitrogen (urea) supplementation resulted in a reduced sludge median particle size and decreased sludge filterability. Standard filterability parameters such as capillary suction time and specific resistance to filtration tended to rapidly increase in the nitrogen supplemented reactor. The critical fluxes in the nitrogen limited and supplemented reactors were 20 and 9 L m-2 h-1, respectively. The rapid deterioration of sludge filterability under nitrogen supplemented conditions was attributed to abundant growth of dispersed biomass. Thus, the COD:TKN ratio of wastewater affected both bioconversion and filterability performance in the anaerobic membrane bioreactors.
Collapse
Affiliation(s)
- Recep Kaan Dereli
- Istanbul Technical University, Civil Engineering Faculty, Environmental Engineering Department, Maslak, 34469, Istanbul, Turkey; Delft University of Technology, Faculty of Civil Engineering and Geosciences, Department of Watermanagement, Sanitary Engineering Section, Stevinweg 1, 2628, CN Delft, The Netherlands.
| | - Xiaofei Wang
- Universidade Nova de Lisboa, Faculdade de Ciências e Tecnologia, Departamento de Química, Lisbon, Portugal
| | - Frank P van der Zee
- Veolia Water Technologies, Biothane Systems International, Tanthofdreef 21, 2600, GB Delft, The Netherlands
| | - Jules B van Lier
- Delft University of Technology, Faculty of Civil Engineering and Geosciences, Department of Watermanagement, Sanitary Engineering Section, Stevinweg 1, 2628, CN Delft, The Netherlands
| |
Collapse
|
6
|
El Achkar JH, Lendormi T, Salameh D, Louka N, Maroun RG, Lanoisellé JL, Hobaika Z. Anaerobic digestion of grape pomace: Effect of the hydraulic retention time on process performance and fibers degradability. WASTE MANAGEMENT (NEW YORK, N.Y.) 2018; 71:137-146. [PMID: 29122460 DOI: 10.1016/j.wasman.2017.11.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 10/26/2017] [Accepted: 11/01/2017] [Indexed: 06/07/2023]
Abstract
To optimize the anaerobic digestion of grape pomace under mesophilic conditions, continuous digesters were operated at different hydraulic retention times (HRT) (30, 20, 15 and 10 days) equivalent to organic loading rates (OLR) of 2.5, 3.7, 5.7 and 7.3 kg COD m-3 d-1, respectively. At HRTs of 30 and 20 days, steady state conditions were observed with methane yields of 0.984 ± 0.013 NL d-1 and 1.362 ± 0.018 NL d-1, respectively. The HRT of 15 days was found critical because of acids accumulation through the experiments. When the OLR of 5.7 kg COD m-3 d-1 was reached, methane production was found to be instable. Finally, at HRT of 10 days, a failure of the system was observed due to the washing of the methanogenic microorganisms. Regarding the degradability of the lignocellulosic fractions, the maximum reduction yields for hemicellulose and cellulose were noted for HRTs of 30 and 20 days, while lignin was not degraded throughout the different experiments. For an optimization of the process, HRT of 20 days can therefore be recommended for productive use in large-scale applications.
Collapse
Affiliation(s)
- Jean H El Achkar
- Univ. Bretagne Sud, FRE CNRS 3744, IRDL, F-56300 Pontivy, France; Centre d'Analyses et de Recherches, Unité de recherche Technologies et Valorisation Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, Beirut, Lebanon.
| | - Thomas Lendormi
- Univ. Bretagne Sud, FRE CNRS 3744, IRDL, F-56300 Pontivy, France
| | - Dominique Salameh
- Centre d'Analyses et de Recherches, Unité de recherche Technologies et Valorisation Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, Beirut, Lebanon
| | - Nicolas Louka
- Centre d'Analyses et de Recherches, Unité de recherche Technologies et Valorisation Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, Beirut, Lebanon
| | - Richard G Maroun
- Centre d'Analyses et de Recherches, Unité de recherche Technologies et Valorisation Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, Beirut, Lebanon
| | | | - Zeina Hobaika
- Centre d'Analyses et de Recherches, Unité de recherche Technologies et Valorisation Alimentaire, Faculté des Sciences, Université Saint-Joseph de Beyrouth, Beirut, Lebanon
| |
Collapse
|
7
|
Assessment of the Variability of Biogas Production from Sugar Beet Silage as Affected by Movement and Loss of the Produced Alcohols and Organic Acids. ENERGIES 2016. [DOI: 10.3390/en9050368] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
8
|
Aboudi K, Álvarez-Gallego CJ, Romero-García LI. Biomethanization of sugar beet byproduct by semi-continuous single digestion and co-digestion with cow manure. BIORESOURCE TECHNOLOGY 2016; 200:311-319. [PMID: 26512853 DOI: 10.1016/j.biortech.2015.10.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 10/06/2015] [Accepted: 10/07/2015] [Indexed: 06/05/2023]
Abstract
Dried pellet of exhausted sugar beet cossettes were digested alone and combined with cow manure as co-substrate in a mesophilic semi-continuous anaerobic system. In single digestion assay, the stable biogas production and stable reactor operation was observed at the hydraulic retention time (HRT) of 20days (OLR: 3.26gVS/Lreactord) which was the minimum HRT tolerated by the system. However, co-digestion with cow manure allowed to decrease the HRT until 15days (OLR: 4.97gVS/Lreactord) with 32% higher biogas generation and efficient reactor operation. Propionic acid was the predominant VFA observed during single digestion assay failure, while acetic acid accumulation was observed in the co-digestion assay. In both single and co-digestion assays, the recovery of digesters was possible by ceasing the feeding and re-inoculation with a well-adapted inoculum.
Collapse
Affiliation(s)
- Kaoutar Aboudi
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain.
| | - Carlos José Álvarez-Gallego
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain
| | - Luis Isidoro Romero-García
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain
| |
Collapse
|
9
|
Borowski S, Kucner M. Co-digestion of sewage sludge and dewatered residues from enzymatic hydrolysis of sugar beet pulp. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2015; 65:1354-1364. [PMID: 26378477 DOI: 10.1080/10962247.2015.1093564] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
UNLABELLED Sugar beet pulp residues (SBPR) from hydrolysis and dewatering of beet pulp were co-digested with municipal sewage sludge (MSS). The highest biogas yields of nearly 512 dm(3)/kg VSfed (volatile solids fed) were achieved for SBPR, treated both as the monosubstrate and as a mixture with MSS (1 : 1 by weight). Simultaneously, the highest methane production of 348 dm(3) CH4/kg VSfed was determined when the sewage sludge was co-digested with 35% SBPR. The analysis of digestate showed that neither ammonia nor volatile fatty acids destabilized the biogas production. IMPLICATIONS Processing of sugar beet pulp into bioethanol via enzymatic hydrolysis and microbial fermentation has become increasingly attractive. However, in this process, only the liquid fraction derived from hydrolysis is subjected into alcoholic fermentation, whereas the remaining solid fraction needs to be utilized. This study demonstrated that sugar beet pulp residues after bioethanol production can successfully be co-digested with sewage sludge to increase biogas productivity of anaerobic digesters located at wastewater treatment plants.
Collapse
Affiliation(s)
- Sebastian Borowski
- a Institute of Fermentation Technology and Microbiology, Faculty of Biotechnology and Food Sciences , Lodz University of Technology , Łódź , Poland
| | - Marcin Kucner
- a Institute of Fermentation Technology and Microbiology, Faculty of Biotechnology and Food Sciences , Lodz University of Technology , Łódź , Poland
| |
Collapse
|
10
|
Aboudi K, Álvarez-Gallego CJ, Romero-García LI. Semi-continuous anaerobic co-digestion of sugar beet byproduct and pig manure: Effect of the organic loading rate (OLR) on process performance. BIORESOURCE TECHNOLOGY 2015. [PMID: 26210141 DOI: 10.1016/j.biortech.2015.07.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Anaerobic co-digestion of dried pellet of exhausted sugar beet cossettes (ESBC-DP) with pig manure (PM) was investigated in a semi-continuous stirred tank reactor (SSTR) under mesophilic conditions. Seven hydraulic retention times (HRT) from 20 to 5 days were tested with the aim to evaluate the methane productivities and volatile solids (VS) removal. The corresponding organic loading rates (OLR) ranged from 4.2 to 12.8 gVS/L(reactor) d. The findings revealed that highest system efficiency was achieved at an OLR of 11.2 gVS/L(reactor) d (6 days-HRT) with a methane production rate (MPR) and volatile solids (VS) reduction of 2.91 LCH4/L(reactor) d and 57.5%, respectively. The HRT of 5 days was found critical for the studied process, which leads to volatile fatty acids (VFA) accumulation and sharp drop in pH. However, the increase of HRT permits the recovery of system.
Collapse
Affiliation(s)
- Kaoutar Aboudi
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain.
| | - Carlos José Álvarez-Gallego
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain
| | - Luis Isidoro Romero-García
- Department of Chemical Engineering and Food Technology, Faculty of Sciences, Agrifood Campus of International Excellence (CeiA3), University of Cádiz, 11510 Puerto Real, Cadiz, Spain
| |
Collapse
|
11
|
Ziemiński K, Kowalska-Wentel M. Effect of enzymatic pretreatment on anaerobic co-digestion of sugar beet pulp silage and vinasse. BIORESOURCE TECHNOLOGY 2015; 180:274-280. [PMID: 25618496 DOI: 10.1016/j.biortech.2014.12.035] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 12/10/2014] [Accepted: 12/11/2014] [Indexed: 06/04/2023]
Abstract
Results of sugar beet pulp silage (SBPS) and vinasse (mixed in weight ratios of 3:1, 1:1 and 1:3, respectively) co-fermentation, obtained in this study, provide evidence that addition of too high amount of vinasse into the SBPS decreases biogas yields. The highest biogas productivity (598.1mL/g VS) was achieved at the SBPS-vinasse ratio of 3:1 (w/w). Biogas yields from separately fermented SBPS and vinasse were by 13% and 28.6% lower, respectively. It was found that enzymatic pretreatment of SBPS before methane fermentation that caused partial degradation of component polysaccharides, considerably increased biogas production. The highest biogas yield (765.5mL/g VS) was obtained from enzymatic digests of SBPS-vinasse (3:1) blend (27.9% more than from fermentation of the counterpart blend, which was not treated with enzymes). The simulation of potential biogas production from all the aforementioned mixtures using the Gompertz equation showed fair fit to the experimental results.
Collapse
Affiliation(s)
- Krzysztof Ziemiński
- Institute of Fermentation Technology and Microbiology, Lodz University of Technology, Poland.
| | - Monika Kowalska-Wentel
- Institute of Fermentation Technology and Microbiology, Lodz University of Technology, Poland
| |
Collapse
|
12
|
Moeller L, Lehnig M, Schenk J, Zehnsdorf A. Foam formation in biogas plants caused by anaerobic digestion of sugar beet. BIORESOURCE TECHNOLOGY 2015; 178:270-277. [PMID: 25446785 DOI: 10.1016/j.biortech.2014.09.098] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 09/18/2014] [Accepted: 09/19/2014] [Indexed: 06/04/2023]
Abstract
The use of sugar beet in anaerobic digestion (AD) during biogas production can lead to process upsets such as excessive foaming in fermenters. In the present study, foam formation in sugar beet-fed digestates was studied in foaming tests. The increasing disintegration grade of sugar beet was observed to have a promoting effect on foaming in the digestate but did not affect the biogas yield. Chemical analysis of foam and digestate from sugar beet silage AD showed high concentrations of pectin, other carbohydrates and N-containing substances in the foam. Both pectin and sucrose showed little foaming in AD. Nevertheless, sucrose and calcium chloride had a promoting effect on foaming for pectin AD. Salts of divalent ions also enhanced the foam intensity in the case of sugar beet silage AD, whereas ammonium chloride and urea had a lessening effect on sugar beet-based foaming.
Collapse
Affiliation(s)
- Lucie Moeller
- UFZ - Helmholtz Centre for Environmental Research, Centre for Environmental Biotechnology, Permoserstrasse 15, 04318 Leipzig, Germany.
| | - Marcus Lehnig
- Leipzig University of Applied Sciences, Koburger Strasse 62, D-04416 Markkleeberg, Germany.
| | - Joachim Schenk
- Leipzig University of Applied Sciences, Koburger Strasse 62, D-04416 Markkleeberg, Germany.
| | - Andreas Zehnsdorf
- UFZ - Helmholtz Centre for Environmental Research, Centre for Environmental Biotechnology, Permoserstrasse 15, 04318 Leipzig, Germany.
| |
Collapse
|
13
|
Suhartini S, Heaven S, Banks CJ. Comparison of mesophilic and thermophilic anaerobic digestion of sugar beet pulp: performance, dewaterability and foam control. BIORESOURCE TECHNOLOGY 2013; 152:202-211. [PMID: 24291796 DOI: 10.1016/j.biortech.2013.11.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Revised: 11/03/2013] [Accepted: 11/07/2013] [Indexed: 06/02/2023]
Abstract
Digestion of sugar beet pulp was assessed in relation to biogas and methane production, foaming potential, and digestate dewaterability. Four 4-litre working volume digesters were operated mesophilically (37±0.5 °C) and four thermophilically (55±0.5 °C) over three hydraulic retention times. Digesters were operated in duplicate at organic loading rates (OLR) of 4 and 5 g volatile solids l(-1) day(-1) without water addition. Thermophilic digestion gave higher biogas and methane productivity than mesophilic and was able to operate at the higher OLR, where mesophilic digestion showed signs of instability. Digestate dewaterability was assessed using capillary suction time and frozen image centrifugation. The occurrence of, or potential for, stable foam formation was assessed using a foaming potential test. Thermophilic operation allowed higher loadings to be applied without loss of performance, and gave a digestate with superior dewatering characteristics and very little foaming potential.
Collapse
Affiliation(s)
- Sri Suhartini
- Faculty of Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, UK; Department of Agricultural Industry Technology, Faculty of Agricultural Technology, University of Brawijaya, Malang 64145, Indonesia.
| | - Sonia Heaven
- Faculty of Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, UK.
| | - Charles J Banks
- Faculty of Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, UK.
| |
Collapse
|
14
|
Reducing the risk of foaming and decreasing viscosity by two-stage anaerobic digestion of sugar beet pressed pulp. Biodegradation 2013; 25:277-89. [DOI: 10.1007/s10532-013-9659-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2013] [Accepted: 08/10/2013] [Indexed: 10/26/2022]
|
15
|
Inyang M, Gao B, Yao Y, Xue Y, Zimmerman AR, Pullammanappallil P, Cao X. Removal of heavy metals from aqueous solution by biochars derived from anaerobically digested biomass. BIORESOURCE TECHNOLOGY 2012; 110:50-6. [PMID: 22325901 DOI: 10.1016/j.biortech.2012.01.072] [Citation(s) in RCA: 320] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Revised: 01/11/2012] [Accepted: 01/15/2012] [Indexed: 05/24/2023]
Abstract
This study examined the ability of two biochars converted from anaerobically digested biomass to sorb heavy metals using a range of laboratory sorption and characterization experiments. Initial evaluation of DAWC (digested dairy waste biochar) and DWSBC (digested whole sugar beet biochar) showed that both biochars were effective in removing a mixture of four heavy metals (Pb(2 +), Cu(2+), Ni(2+), and Cd(2+)) from aqueous solutions. Compared to DAWC, DWSBC demonstrated a better ability to remove Ni and Cd. Further investigations of lead sorption by the two biochars indicated that the removal was mainly through a surface precipitation mechanism, which was confirmed by batch sorption experiments, mathematical modeling, and examinations of lead-laden biochars samples using SEM-EDS, XRD, and FTIR. The lead sorption capacity of the two biochars was close to or higher than 200mmol/kg, which is comparable to that of commercial activated carbons.
Collapse
Affiliation(s)
- Mandu Inyang
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, United States
| | | | | | | | | | | | | |
Collapse
|
16
|
Fang C, Boe K, Angelidaki I. Anaerobic co-digestion of by-products from sugar production with cow manure. WATER RESEARCH 2011; 45:3473-3480. [PMID: 21530994 DOI: 10.1016/j.watres.2011.04.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Revised: 01/31/2011] [Accepted: 04/04/2011] [Indexed: 05/30/2023]
Abstract
Sugar beet leaves (SBL), sugar beet top (SBT), sugar beet pulp (SBP) and desugared molasses (DM) are by-products from the sugar production. In the present study we investigated the potential of SBL, SBT and SBP as feedstock for biogas production. The maximum methane potential of SBL, SBT and SBP determined by batch assays was found to be 490, 500 and 240 mL-CH(4)/gVS-added respectively. Three reactor experiments were carried out to investigate the effect of co-digestion of SBP, DM and manure at different ratios, on biogas process efficiency and stability. The results showed that DM was potentially inhibiting the biogas process and the co-digestion of SBP and DM was only successful at high dilution with manure or water. In contrast, SBP was shown to be a good substrate for biogas production and the methane yield of 280 mL-CH(4)/gVS-added was obtained in a thermophilic continuously operated reactor, co-digesting 50% of SBP with cow manure.
Collapse
Affiliation(s)
- Cheng Fang
- Department of Environmental Engineering, Technical University of Denmark, Building 113, DK-2800 Kgs. Lyngby, Denmark
| | | | | |
Collapse
|