Anaerobic Digestion Potential of Coproducts Associated with Ethanol Production from Sweetpotato: A Review

Abstract The synergy between biofuels and biogas can be realized effectively with the use of a high-yielding sweetpotato as a feedstock for ethanol production, while the coproducts are anaerobically digested for energy recovery to achieve sustainable operation of a biorefinery. The focus of this review article is to characterize, quantify, and evaluate the methane potential of coproducts associated with dry-type, industrial sweetpotatoes, including culls, aerial vines, and distillery waste. Reported biomass yields of vines and culls combined with biomethane potential assays suggest that agricultural residues from sweetpotatoes have untapped energy potential that can be recovered by anaerobic digestion. Both pilot- and full-scale digesters of various types have demonstrated successful and stable biogas production from sweetpotato alcohol distillery wastewater. Higher methane yields were observed in thermophilic compared to mesophilic conditions. Reactors with fixed media such as fixed-bed and membrane bior...

[1]  Yebo Li,et al.  Biogas energy production from tropical biomass wastes by anaerobic digestion. , 2014, Bioresource technology.

[2]  Taihua Mu,et al.  Sweet potato (Ipomoea batatas L.) leaves as nutritional and functional foods. , 2014, Food chemistry.

[3]  Kenji Kida,et al.  Digestion performance and microbial community in full-scale methane fermentation of stillage from sweet potato-shochu production. , 2014, Journal of environmental sciences.

[4]  E. Ginting,et al.  The Prospects and Challenges of Sweet Potato as Bio-ethanol Source in Indonesia , 2014 .

[5]  Takashi Watanabe,et al.  Treatment of, and Candida utilis biomass production from shochu wastewater; the effects of maintaining a low pH on DOC removal and feeding cultivation on biomass production , 2013, SpringerPlus.

[6]  C. Lareo,et al.  Evaluation of sweet potato for fuel bioethanol production: hydrolysis and fermentation , 2013, SpringerPlus.

[7]  C. Lareo,et al.  Energy consumption evaluation of fuel bioethanol production from sweet potato. , 2013, Bioresource technology.

[8]  Qun Chen,et al.  Life-cycle energy efficiency and environmental impacts of bioethanol production from sweet potato. , 2013, Bioresource technology.

[9]  Yang Fang,et al.  Comparison of ethanol production performance in 10 varieties of sweet potato at different growth stages , 2012 .

[10]  M. Urge,et al.  Effects of feeding sweet potato (Ipomoea batatas) vines as a supplement on feed intake, growth performance, digestibility and carcass characteristics of Sidama goats fed a basal diet of natural grass hay , 2012, Tropical Animal Health and Production.

[11]  M. Wanapat,et al.  Performance of lactating dairy cows fed a diet based on treated rice straw and supplemented with pelleted sweet potato vines , 2012, Tropical Animal Health and Production.

[12]  Ivo Achu Nges,et al.  Benefits of supplementing an industrial waste anaerobic digester with energy crops for increased biogas production. , 2012, Waste management.

[13]  Li Dong,et al.  Effect of temperature and solid concentration on anaerobic digestion of rice straw in South China , 2010 .

[14]  J M Lema,et al.  A methodology for optimising feed composition for anaerobic co-digestion of agro-industrial wastes. , 2010, Bioresource technology.

[15]  V. Ferre,et al.  A novel combination of methane fermentation and MBR — Kubota Submerged Anaerobic Membrane Bioreactor process , 2010 .

[16]  Scott Rozelle,et al.  Bioethanol development in China and the potential impacts on its agricultural economy , 2010 .

[17]  C. Katongole,et al.  Intake, growth and carcass yield of indigenous goats fed market wastes of sweet potato (Ipomoea batatas) vines and scarlet eggplant (Solanum aethiopicum) , 2009, Tropical Animal Health and Production.

[18]  Takashi Watanabe,et al.  Treatment and phosphorus removal from high-concentration organic wastewater by the yeast Hansenula anomala J224 PAWA. , 2009, Bioresource technology.

[19]  M. Akoroda.  Sweetpotato in West Africa , 2009 .

[20]  Q. Liu,et al.  Sweetpotato in China , 2009 .

[21]  M. Shankle,et al.  Sweetpotato Production in the United States , 2009 .

[22]  G. Padmaja.  Uses and Nutritional Data of Sweetpotato , 2009 .

[23]  W. H. Duvernay.  Conversion of Industrial Sweetpotatoes for the Production of Ethanol , 2008 .

[24]  D. Weichgrebe,et al.  The valuation of malnutrition in the mono-digestion of maize silage by anaerobic batch tests. , 2008, Water science and technology : a journal of the International Association on Water Pollution Research.

[25]  C. Cardona,et al.  Trends in biotechnological production of fuel ethanol from different feedstocks. , 2008, Bioresource technology.

[26]  K. Sandeep,et al.  Dielectric Properties of Sweet Potato Purees at 915 MHz as Affected by Temperature and Chemical Composition , 2008 .

[27]  Ann C. Wilkie,et al.  Biomethane from Biomass, Biowaste, and Biofuels , 2008 .

[28]  I. Etela,et al.  Fodder and tuber yields, and fodder quality of sweet potato cultivars at different maturity stages in the West African humid forest and savanna zones , 2007 .

[29]  S. Tamiya,et al.  Studies on the Breeding for Improving Starch Properties in Sweet Potato , 2006 .

[30]  T. Suzuki,et al.  On-site treatment of high-strength alcohol distillery wastewater by a pilot-scale thermophilic multi-staged UASB (MS-UASB) reactor. , 2006, Water science and technology : a journal of the International Association on Water Pollution Research.

[31]  Ayhan Demirbas,et al.  Biogas Potential of Manure and Straw Mixtures , 2006 .

[32]  J. Arthington,et al.  Estimation of feeding value of four tropical forage species at two stages of maturity. , 2005, Journal of animal science.

[33]  Bo Mattiasson,et al.  Anaerobic batch co-digestion of sisal pulp and fish wastes. , 2004, Bioresource technology.

[34]  B. Mattiasson,et al.  Anaerobic batch digestion of solid potato waste alone and in combination with sugar beet leaves , 2004 .

[35]  E. M. Aregheore.  Nutritive value of sweet potato (Ipomea batatas (L) Lam) forage as goat feed: voluntary intake, growth and digestibility of mixed rations of sweet potato and batiki grass (Ischaemum aristatum var. indicum) , 2004 .

[36]  K. Kida,et al.  In Vitro Evaluation of Physiological Activity of Vinegar Produced from Barley-, Sweet Potato-, and Rice-shochu Post-distillation Slurry , 2004, Bioscience, biotechnology, and biochemistry.

[37]  J. Lindberg,et al.  Effect of harvesting interval and defoliation on yield and chemical composition of leaves, stems and tubers of sweet potato (Ipomoea batatas L. (Lam.)) plant parts , 2003 .

[38]  J. Rintala,et al.  Semi-continuous anaerobic digestion of solid poultry slaughterhouse waste: effect of hydraulic retention time and loading. , 2002, Water research.

[39]  E Salminen,et al.  Anaerobic digestion of organic solid poultry slaughterhouse waste--a review. , 2002, Bioresource technology.

[40]  H. Corke,et al.  Biochemical changes during storage of sweet potato roots differing in dry matter content , 2002 .

[41]  A. Wilkie,et al.  Stillage characterization and anaerobic treatment of ethanol stillage from conventional and cellulosic feedstocks , 2000 .

[42]  A. Hartemink,et al.  Yield decline of sweet potato in the humid lowlands of Papua New Guinea , 2000 .

[43]  D. Wiesenborn,et al.  Rheological and physicochemical properties of starches from moist- and dry-type sweetpotatoes. , 2000, Journal of agricultural and food chemistry.

[44]  T. Tadokoro,et al.  Nutritive evaluation on chemical components of leaves, stalks and stems of sweet potatoes (Ipomoea batatas Poir). , 2000 .

[45]  A. Converti,et al.  Anaerobic digestion of the vegetable fraction of municipal refuses: mesophilic versus thermophilic conditions , 1999 .

[46]  A. Mustafa,et al.  Evaluation of wheat-based wet distillers' grains for feedlot cattle , 1997 .

[47]  J. Edwards,et al.  Crop Rotation Effects on Sweet Potato Yield and Quality , 1997 .

[48]  Birgitte Kiær Ahring,et al.  Status on science and application of thermophilic anaerobic digestion , 1994 .

[49]  T. Klopfenstein,et al.  Wet corn distillers byproducts compared with dried corn distillers grains with solubles as a source of protein and energy for ruminants. , 1994, Journal of animal science.

[50]  A. V. Haandel,et al.  Profitability Increase of Alcohol Distilleries by the Rational Use of Byproducts , 1994 .

[51]  Anastasios I. Zouboulis,et al.  Thermophilic anaerobic digestion of alcohol distillery wastewaters , 1993 .

[52]  E. Arikawa,et al.  The Treatment of Liquor Wastewater Containing High-Strength Suspended Solids by Membrane Bioreactor System , 1992 .

[53]  M. E. Souza,et al.  Thermophilic anaerobic digestion of vinasse in pilot plant UASB reactor , 1992 .

[54]  Hang-sik Shin,et al.  Anaerobic Digestion of Distillery Wastewater in a Two-Phase UASB System , 1992 .

[55]  A. Bories,et al.  Anaerobic digestion of high-strength distillery wastewater (cane molasses stillage) in a fixed-film reactor , 1988 .

[56]  S. Ring,et al.  Resistant starch: its chemical form in foodstuffs and effect on digestibility in vitro. , 1988 .

[57]  T. Clark,et al.  Anaerobic digestion of wood ethanol stillage using upflow anaerobic sludge blanket reactor , 1987, Biotechnology and bioengineering.

[58]  H. P. Lee,et al.  Dietary fiber and starch contents of some Southeast Asian vegetables , 1987 .

[59]  M. Bagby,et al.  Recovery of protein-rich byproducts from sweet potato stillage following alcohol distillation , 1987 .

[60]  D. L. Hawkes,et al.  Review of full-scale anaerobic digestion in China , 1986 .

[61]  Ann C. Wilkie,et al.  Enhancement of anaerobic methanogenesis from napiergrass by addition of micronutrients , 1986 .

[62]  G. Dull,et al.  Ca, Fe and Zn Content of‘Jewel’Sweet Potato Greens as Affected by Harvesting Practices , 1985 .

[63]  Paul H. Smith,et al.  Conversion of biomass into methane gas. , 1984 .

[64]  D. J. Hills,et al.  Anaerobic digestion of dairy manure and field crop residues , 1981 .