Abstract:
:The objective of this work was to determine the hydrogen production from paper mill wastes using microbial consortia of solid substrate anaerobic digesters. Inocula from mesophilic, continuous solid substrate anaerobic digestion (SSAD) reactors were transferred to small lab scale, batch reactors. Milled paper (used as a surrogate paper waste) was added as substrate and acetylene or 2-bromoethanesulfonate (BES) was spiked for methanogenesis inhibition. In the first phase of experiments it was found that acetylene at 1% v/v in the headspace was as effective as BES in inhibiting methanogenic activity. Hydrogen gas accumulated in the headspace of the bottles, reaching a plateau. Similar final hydrogen concentrations were obtained for reactors spiked with acetylene and BES. In the second phase of tests the headspace of the batch reactors was flushed with nitrogen gas after the first plateau of hydrogen was reached, and subsequently incubated, with no further addition of inhibitor nor substrate. It was found that hydrogen production resumed and reached a second plateau, although somewhat lower than the first one. This procedure was repeated a third time and an additional amount of hydrogen was obtained. The plateaux and initial rates of hydrogen accumulation decreased in each subsequent incubation cycle. The total cumulative hydrogen harvested in the three cycles was much higher (approx. double) than in the first cycle alone. We coined this procedure as IV-SSAH (intermittently vented solid substrate anaerobic hydrogen generation). Our results point out to a feasible strategy for obtaining higher hydrogen yields from the fermentation of industrial solid wastes, and a possible combination of waste treatment processes consisting of a first stage IV-SSAH followed by a second SSAD stage. Useful products of this approach would be hydrogen, organic acids or methane, and anaerobic digestates that could be used as soil amenders after post-treatment.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Valdez-Vazquez I,Sparling R,Risbey D,Rinderknecht-Seijas N,Poggi-Varaldo HMdoi
10.1016/j.biortech.2005.01.036subject
Has Abstractpub_date
2005-11-01 00:00:00pages
1907-13issue
17eissn
0960-8524issn
1873-2976pii
S0960-8524(05)00096-9journal_volume
96pub_type
杂志文章abstract::Stripping of mashes with air as stripping gas and low ethanol contents between 3 and 5wt% was investigated in terms of its suitability for continuous bioethanol production. Experiments in a Blenke cascade system were carried out and the results were compared with values obtained from theoretical vapour-liquid-equilibr...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2017.02.001
更新日期:2017-05-01 00:00:00
abstract::Three phenol- and alkanes-degrading bacterial strains were isolated from a freshwater sample. Upon the 16S rRNA gene analysis, phenotype and physiological features, the three strains were designated as Acinetobacter sp. with both phenol hydroxylase gene (phe) and alkane monooxygenase gene (alkM) detected. They could s...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2012.06.072
更新日期:2012-11-01 00:00:00
abstract::In this study, three anaerobic digestion experiments were established to investigate the effects of solids retention times (SRT) on the fate of antibiotic resistance genes (ARGs) including anaerobic digestion of sewage sludge (CK), one-stage anaerobic digestion of microwave pretreatment sludge (MW) and two-stage anaer...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2018.12.008
更新日期:2019-02-01 00:00:00
abstract::Effect of oxygen and sodium hypochlorite (NaOCl) as cathodic electron acceptors on performance of a clayware microbial fuel cell (MFC) was evaluated in this study. Maximum power density of 6.57 W/m(3) was obtained with NaOCl as catholyte, which is about 9 times higher than oxygen being used as an electron acceptor. Vo...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2013.12.069
更新日期:2014-02-01 00:00:00
abstract::A novel system for high-temperature alcoholic fermentation of whey is described. This system consists of Kluyveromyces marxianus yeast immobilized on delignified cellulosic material (DCM). The effect of pH, initial lactose concentration and temperature on the fermentation of a synthetic medium containing lactose was s...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/s0960-8524(01)00159-6
更新日期:2002-04-01 00:00:00
abstract::Cellulosic alcoholic fermentation generates large amounts of vinasse, which was utilized in the present work to enhance the anaerobic digestion of rice straw and swine manure at different total solid (TS) contents. Straw fermentation resulted in bioethanol and vinasse yields of 95.2 g and 857.7 mL, respectively, per k...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2020.123511
更新日期:2020-09-01 00:00:00
abstract::Nitrate-dependent anaerobic ferrous oxidizing (NAFO) is a valuable biological process, which utilizes ferrous iron to convert nitrate into nitrogen gas, removing nitrogen from wastewater. In this work, the performance of NAFO process was investigated as a nitrate removal technology. The results showed that NAFO system...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2014.12.036
更新日期:2015-03-01 00:00:00
abstract::Cellulase production by two filamentous fungi Trichoderma reesei RUT-C30 and novel fungal strain, Aspergillus saccharolyticus on pretreated corn stover was investigated. Cellulase production was followed by the hydrolysis of two feedstocks, wet-exploded corn stover (WECS) and wet-exploded loblolly pine (WELP) by on-si...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2013.12.059
更新日期:2014-02-01 00:00:00
abstract::The present study reports pyrolysis behavior of three waste biomass using thermogravimetric analysis to determine kinetic parameters at five different heating rates. Physiochemical characterization confirmed that these biomass have the potential for fuel and energy production. Pyrolysis experiments were carried out at...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2017.12.029
更新日期:2018-03-01 00:00:00
abstract::Despite recent advances in down-stream processing, production of microalgae remains substantially limited because of economical reasons. Harvesting and dewatering are the most energy-intensive processing steps in their production and contribute 20-30% of total operational cost. Bio-flocculation of microalgae by co-cul...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2015.03.026
更新日期:2015-06-01 00:00:00
abstract::The optimization of culture condition for enhanced hydrogen production by Thermoanaerobacterium thermosaccharolyticum W16 was conducted using statistical experimental design and analysis. Plackett-Burman design was first used to screen the most important variables influencing hydrogen production, and subsequently cent...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2009.11.031
更新日期:2010-03-01 00:00:00
abstract::In this study, activated carbons were prepared from sugar beet bagasse by chemical activation and the prepared activated carbons were used to remove nitrate from aqueous solutions. In chemical activation, ZnCl(2) was used as chemical agent. The effects of impregnation ratio and activation temperature were investigated...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2009.09.087
更新日期:2010-03-01 00:00:00
abstract::The depolymerization of renewable lignin for phenolic monomer, a versatile biochemical and precursor for biofuel, has attracted increasing attention. Here, an efficient base-catalyzed depolymerization process for this natural aromatic polymer is presented with cheap industrial solid alkali MgO and biomass-derived solv...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2013.12.020
更新日期:2014-02-01 00:00:00
abstract::The effect of dosing a metal limited anaerobic sludge blanket (UASB) reactor with a metal pulse on the methanogenic activity of granular sludge has thus far not been successfully modeled. The prediction of this effect is crucial in order to optimize the strategy for metal dosage and to prevent unnecessary losses of re...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2010.07.053
更新日期:2010-12-01 00:00:00
abstract::Two trains (A and B) of four-stage moving bed biofilm reactors (MBBRs) were developed for the degradation of thiocyanate (SCN(-)), cyanate (OCN(-)) and ammonia (NH3). A pre-denitrification configuration was established in the first-stage reactor of the B train using SCN(-) and OCN(-) as the sole carbon source. SCN(-),...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2015.01.051
更新日期:2015-04-01 00:00:00
abstract::A combined process coupling a Fe3O4 nanoparticles (Fe3O4 NPs) heterogeneous Fenton-like reaction and an anaerobic biological technology was investigated in order to effectively treat amoxicillin-containing wastewater. With the increase in the pretreatment degree, the average COD removal rate correspondingly increased ...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2018.12.104
更新日期:2019-03-01 00:00:00
abstract::In this study, total eight distinct Miscanthus accessions were collected from the cadmium (Cd)-supplied soil pots, and mild alkali pretreatments (0.5%, 1% NaOH) were then performed to enhance biomass enzymatic saccharification. Due to large Cd accumulation, all Miscanthus accessions showed significantly reduced cellul...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2018.04.031
更新日期:2018-09-01 00:00:00
abstract::To ensure proper use of Trichoderma harzianum in agriculture, accurate data must be obtained in population monitoring. The effectiveness of qRT-PCR to quantify T. harzianum in different growing media was compared to the commonly used techniques of colony counting and qPCR. Results showed that plate counting and qPCR o...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2010.09.120
更新日期:2011-02-01 00:00:00
abstract::The adsorption of Cr(VI) (0.500 mg/L) onto food-grade tannic-acid immobilised powdered activated carbon (TA-PAC) in the presence of dissolved humic acid (DHA) was investigated at 280 K as a function of pH, along with the adsorption capacities and the adsorption isotherms for chromium ions. The results showed that the ...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2013.01.166
更新日期:2013-08-01 00:00:00
abstract::In this study, the influence of major hemicellulosic sugars (mannose and xylose) on cellulose hydrolysis and major enzyme activities were evaluated by using both commercial enzyme cocktail and purified cellulase monocomponents over a "library" of cellulosic substrates. Surprisingly, the results showed that unlike gluc...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2017.12.006
更新日期:2018-06-01 00:00:00
abstract::The objective of this work is to develop a quick and simple method for the in situ monitoring of sugars in biological cultures. A new technology based on Attenuated Total Reflectance-Fourier Transform Infrared (FT-IR/ATR) spectroscopy in combination with an external light guiding fiber probe was tested, first to build...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2013.06.094
更新日期:2013-09-01 00:00:00
abstract::The continuous fast pyrolysis of soybean oil in a pilot plant was investigated. The experimental runs were carried out according to an experimental design alternating the temperature (from 450 to 600 degrees C) and the concentration of water (from 0% to 10%). The liquid products were analyzed by gas chromatography and...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2009.07.059
更新日期:2009-12-01 00:00:00
abstract::The adsorption performance of chitosan (CS) hydrogel beads (CSBs) generated by sodium dodecyl sulfate (SDS) gelation with multi-walled carbon nanotube (CNT) impregnation was investigated for Congo red removal as a model anionic dye. CNT-impregnated CSBs were prepared by four different strategies for dispersing CNTs: (...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2010.12.117
更新日期:2011-03-01 00:00:00
abstract::The production of a highly alkaline and thermostable pectinase of Bacillus pumilus was optimized in submerged fermentation using Plackett-Burman design and response surface methodology. Three fermentation variables (C:N ratio, K(2)HPO(4), and pH), which were identified to significantly affect pectinase production by P...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2005.04.012
更新日期:2006-03-01 00:00:00
abstract::Petrochemical wastewaters treatment represents a serious challenge due to the high toxicity and complex chemical components. In this study, the biodegradability, mineralization behaviors and methane productivity of eight different types of petrochemical wastewaters were evaluated in series of semi-continuous bioreacto...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2020.123005
更新日期:2020-05-01 00:00:00
abstract::In this work, penicillin fermentation dregs (PFDs) and sewage sludge (SWS) were co-composted to analyze the possibility of recycling nutrients in PFDs. The temperature was maintained above 55°C for more than 3 days, and the final electrical conductivity (EC), pH and C/N all met the national standards in maturity. A ne...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2016.01.004
更新日期:2016-03-01 00:00:00
abstract::A biological methanation system based on nutrient recycling via mixed culture microbial catabolism was investigated at mesophilic (37 °C) and thermophilic (55 °C) temperatures. At mesophilic temperatures, the formation of biofilms on two different types of material was assessed. Results showed that with intense mixing...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2018.02.109
更新日期:2018-06-01 00:00:00
abstract::This study reports the results of vermicomposting with Eisenia fetida of Parthenium hysterophorus mixed with cow dung in different ratios (25%, 50% and 75%) in a 18 weeks experiment. In all the treatments, a decrease in pH, OC(total) and C:N ratio, but increase in EC, N(total), P(aval), Ca(total), K(total) and heavy m...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2011.02.062
更新日期:2011-05-01 00:00:00
abstract::Hydrogen production during dark fermentation is inhibited by the co-production of volatile fatty acids (VFAs) such as acetic and n-butyric acid. In this study, the effectiveness of conventional electrodialysis (CED) in reducing VFA concentrations in model solutions and hydrogen fermentation broths is evaluated. This i...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2015.04.001
更新日期:2015-08-01 00:00:00
abstract::Two of the six esterases identified in Cucurbita pepo cv. "Eskandrani" were purified to homogeneity using two chromatography steps: anion exchange and gel filtration. The molecular weights of C. pepo esterases EIc and EII were 50,000 +/- 1500 and 68,000 +/- 1900 Da from gel filtration and 47,000 and 66,000 Da from SDS...
journal_title:Bioresource technology
pub_type: 杂志文章
doi:10.1016/j.biortech.2006.11.062
更新日期:2008-01-01 00:00:00