Anaerobic treatment of agricultural resi
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Anaerobic treatment of agricultural resi
Anaerobic Treatment of Agricultural Residues and WastewaterApplication of High-Rate ReactorsWilson ParawiraDepartment of BiotechnologyLundUniversityAk Anaerobic treatment of agricultural resi kademisk avhandling som for avlãggande av teknologie doktorsexamen vid tekniska fakulteten vid Liuids Universitet konuner att offentligen forsvaras torsdagen 16 december 2004. kl 10:30 1 hórsal A pà Kemicentnun. Solvegatan 39. Lund.Academic thesis which, by due permission of the Faculty of Engineeri Anaerobic treatment of agricultural resi ng at Lund University, will be publicly defended on Thursday 16 December. 2004, at 10:30 in lecture hall A. at the Center for Chemistry and Chemical EAnaerobic treatment of agricultural resi
ngineering. Solvegatan 39. Lund, for the degree of Doctor of Philosophy 111 Engineering.Faculty opponent Professor Amelia K. Kivaisi, Applied MicrobioAnaerobic Treatment of Agricultural Residues and WastewaterApplication of High-Rate ReactorsWilson ParawiraDepartment of BiotechnologyLundUniversityAk Anaerobic treatment of agricultural resi rsitySwedenif- Wilson ParawiraISBN: 91-89627-28-8ISRNLUTKDH TKBT--04 1081-SEPunted in Sweden by Media-Tiyck. Lund University.Lund. 2004ABSTRACTThe production of methane via anaerobic digestion of agricultural residues and industrial wastewater would benefit society by providing a clean fuel from ren Anaerobic treatment of agricultural resi ewable feedstocks. Illis would reduce (lie use of fossil-fucl-dcrivcd energy and reduce en\ iionincntal impact. including global wanning and pollutionAnaerobic treatment of agricultural resi
. Ĩ.imitation of carbon dioxide and other emissions through emission regulations, carbon taxes, and subsidies on biomass energy is making anaerobic diAnaerobic Treatment of Agricultural Residues and WastewaterApplication of High-Rate ReactorsWilson ParawiraDepartment of BiotechnologyLundUniversityAk Anaerobic treatment of agricultural resi estion of solid potato waste, sugar beet leaves and opaque beer brewery wastewater. Studies were performed using batch, one-stage and two-stage processes using laboratory -. pilot- and full-scale anaerobic reactors. 1 or improv cd under standing of the anaerobic digestion of solid potato waste, some Anaerobic treatment of agricultural resi of the aspects investigated in this work were the profiles of hydrolytic enzymes, rhe distribution of the major volatile fatty acids produced in theAnaerobic treatment of agricultural resi
acidification stage, the organic matter degradation, methane yield and the effect of co-digcstion.During the hydrolysis of solid potato waste, both frAnaerobic Treatment of Agricultural Residues and WastewaterApplication of High-Rate ReactorsWilson ParawiraDepartment of BiotechnologyLundUniversityAk Anaerobic treatment of agricultural resi er paper cellulase The fermentation products during batch anaerobic digestion of solid potato waste were chiefly acetic, butyric, propionic and lactic acid, rhe concentration and proportions of individual volatile fatty acids Hl the acidogeme stage are important 111 the overall performance of the an Anaerobic treatment of agricultural resi aerobic digestion system since acetic and butyric acids are the preferred precursors in methane formation.The performance of two-stage anaerobic digesAnaerobic treatment of agricultural resi
tion systems under mesophihe and thermophilic conditions showed that the digestion period for solid potato waste was shorter under thermophilic conditAnaerobic Treatment of Agricultural Residues and WastewaterApplication of High-Rate ReactorsWilson ParawiraDepartment of BiotechnologyLundUniversityAk Anaerobic treatment of agricultural resi udge blanket (UASB) reactor were no different from those in the effluent from the mesophilic UASB reactor.High rate reactors (packed-bed reactors with plastic and straw as biofilm carriers and a ƯASB reactor) were found to perform well during methanogenesis in two-stage anaerobic digestion of solid Anaerobic treatment of agricultural resi potato waste. The ƯASB performed better than the packed-bed reactor with plastic carriers. Straw’, a common agricultural by-product, was confirmed toAnaerobic treatment of agricultural resi
work well as a biofilm carrier.Employing efficient but low-cost technology’ is important for increased utilisation of anaerobic digestion, and the posAnaerobic Treatment of Agricultural Residues and WastewaterApplication of High-Rate ReactorsWilson ParawiraDepartment of BiotechnologyLundUniversityAk Anaerobic treatment of agricultural resi sugar beet leaves, alone and combined, with the recov cry of biogas. Co-digcslion of solid potato waste and sugar beet leaves improved the methane yield by 60° 0 compared with that from digestion of the separate substrates in both batch and pilot-scale studies. Results from this work suggest that po Anaerobic treatment of agricultural resi tato waste and sugar beet leaves are suitable substrates for anaerobic digestion giving high biogas yields, and could provide additional benefits to fAnaerobic treatment of agricultural resi
armers.rhe performance of a full-scale UASB reactor treating opaque beer brewery w astewater investigated over a period of two years enabled the breweAnaerobic Treatment of Agricultural Residues and WastewaterApplication of High-Rate ReactorsWilson ParawiraDepartment of BiotechnologyLundUniversityAk Anaerobic treatment of agricultural resi y the brewery is an attractive economic and environmental alternative considering that an era of critical energy shortage, substantially’ higher energy prices and high demand on environmental protection lies aheadCONTENTSTHE PAPERS...............................................................11INTR Anaerobic treatment of agricultural resi ODUCTION...........................................................31.1Biodegradable waste( water) treatment options........................41.2AerobiAnaerobic treatment of agricultural resi
c vs anaerobic degradation.....................................52BIOCHEMICAL AND MIC ROBIOLOGIC AL ASPECTS OF ANAEROBICDIGESTION......................Anaerobic Treatment of Agricultural Residues and WastewaterApplication of High-Rate ReactorsWilson ParawiraDepartment of BiotechnologyLundUniversityAkAnaerobic Treatment of Agricultural Residues and WastewaterApplication of High-Rate ReactorsWilson ParawiraDepartment of BiotechnologyLundUniversityAkGọi ngay
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