Abstract：
:Two lab-scale anaerobic hybrid reactors (AHR) were operated to investigate the effect of recirculated biogas on the development of biomass on supporting media during the start-up. The reactor comprised of two distinct zones; sludge bed on the bottom and packed bed using nylon fiber as the media on the upper half of the reactor. Both reactors were continuously fed with cassava starch wastewater. The organic loading rate (OLR) was increased from 0.3 to 5.5 g COD/L/day by gradually decreasing the hydraulic retention time (HRT) from 37 to 3.5 days in two months. The biogas at 2.6 L/L/day was recirculated merely in the first month of the operation in order to allow the attached biomass to grow according to the organic matters present in the reactor at the final stage of the start up. Chemical oxygen demand (COD) removal efficiency of over 80% was achieved throughout the study. The result demonstrated a better COD removal efficiency for the reactor with biogas recirculation, especially at low HRTs. The amounts of biomass accumulated on the media in both reactors were slightly different with 11.9 gVSS found on the one with biogas recirculation compared to 9.8 gVSS on the other. In addition, 16.3% increase of the sludge bed was achieved with biogas recirculation as opposed to 9% in the control one. The attached biomass activity test indicated a greater amount and more favorable ratio of the methanogenic bacterial group on the media with the recirculation correlating well to a relatively higher methane content in biogas. As a result, the recirculation of biogas has a potential of improving the characteristics of the AHR especially in terms of biomass accumulation.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Suvajittanont W,Chaiprasert Pdoi
10.1016/s0960-8524(02)00278-xsubject
Has Abstractpub_date
2003-06-01 00:00:00pages
157-62issue
2eissn
0960-8524issn
1873-2976pii
S096085240200278Xjournal_volume
88pub_type
杂志文章abstract：:Graphitic biochar (BC) was generated using high temperature gasification and alkaline post-treatment (BCw) of wood-based biomass. The BCw was evaluated as a manganese oxide electrocatalytic support (MnO/BCw) and microbial fuel cell (MFC) air cathode. Nano-structured MnO2 crystals were successfully immobilized on bioma...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2015.06.012
更新日期：2015-11-01 00:00:00
abstract：:In vitro ruminal fermentations resemble in vivo fermentations with respect to substrate consumption and distribution of fermentation products in short term (1-5 d) incubations. However, little is known regarding changes in in vitro fermentations over prolonged incubation or multiple transfers. Gas production, pH, ferm...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2019.121324
更新日期：2019-08-01 00:00:00
abstract：:Solid state and submerged fermentations in the presence of white-rot basidiomycetes (Bjerkandera adusta, Fomes fomentarius, Ganoderma resinaceum, Irpex lacteus, Phanerochaete chrysosporium, Trametes versicolor and basidiomycete Euc-1) and the litter-decomposing basidiomycete Lepista nuda were evaluated as a pretreatme...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2012.02.068
更新日期：2012-05-01 00:00:00
abstract：:This study developed a holistic approach which was based on the ultra-fast hydrolysis of food waste with the fungal mash rich in various hydrolytic enzymes produced in situ from food waste as well. After the 8-h hydrolytic treatment, the solid residue and liquor were separated. It was found that the produced solid res...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2016.12.090
更新日期：2017-03-01 00:00:00
abstract：:In north China, large amounts of excessively wilted maize stover are produced annually. Maize stover wet storage strategies and subsequent biogas production was examined in this study. Firstly, wet storage performances of harvested maize stover, air-dried for different time durations, were evaluated. Results showed th...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2018.03.041
更新日期：2018-07-01 00:00:00
abstract：:Introduction of the two-phase centrifugation system for olive oil extraction during the early nineties in Spain has led to the generation of approximately four million tons per year of a solid olive-mill by-product called "alperujo" (AL). Agrochemical characterisation showed that AL has a high moisture content, slight...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/s0960-8524(03)00177-9
更新日期：2004-01-01 00:00:00
abstract：:The efficiency of a biofilter to simultaneously remove nitric oxide (NO) and sulfur dioxide (SO2) was investigated under thermophilic (48 ± 2 °C) micro-oxygen (3 vol%) conditions. After the start-up stage (Days 0-14), the stable operation period was divided into three stages. SO2 inlet concentration remained 500 mg/m3...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2019.121768
更新日期：2019-10-01 00:00:00
abstract：:This research provides a comprehensive comparison between microwave (MW) and conductive heating (CH) sludge pretreatments under identical heating/cooling profiles at below and above boiling point temperatures. Previous comparison studies were constrained to an uncontrolled or a single heating rate due to lack of a CH ...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2015.03.113
更新日期：2015-01-01 00:00:00
abstract：:Hazelnut shell, as novel biomass, has lower ash content and abundant hydrocarbon, which can be utilized resourcefully with municipal sewage sludge (MSS) by co-pyrolyisis to decrease total content of pollution. The co-pyrolysis of MSS and hazelnut shell blend was analyzed by a method of multi-heating rates and differen...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2017.09.008
更新日期：2018-01-01 00:00:00
abstract：:The effects of four metal ions (Ca(2+), Ni(2+), Mn(2+) and Cu(2+)) were evaluated on growth and production of antifungal compounds by Paenibacillus polymyxa SQR-21 and a quadratic predictive model was developed using response surface methodology (RSM). The results revealed, Mn(2+) and Ni(2+) showed most positive syner...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2009.10.029
更新日期：2010-03-01 00:00:00
abstract：:A mutant strain of Klebsiella pneumoniae, termed GEM167, was obtained by γ irradiation, in which glycerol metabolism was dramatically affected on exposure to γ rays. Levels of metabolites of the glycerol reductive pathway, 1,3-propanediol (1,3-PD) and 3-hydroxypropionic acid (3-HP), were decreased in the GEM167 strain...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2010.12.007
更新日期：2011-02-01 00:00:00
abstract：:L(+) Lactic acid fermentation was studied by Lactobacillus amylophilus GV6 under the influence of inexpensive nitrogen sources (red lentil-RL, and Baker's yeast cells-YC) and starch by response surface methodology (RSM). Central composite rotatable design (CCRD) was employed to determine maximum lactic acid production...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2006.02.013
更新日期：2007-02-01 00:00:00
abstract：:Polyhydroxybutyrates (PHBs) are a class of biopolymers produced by different microbial species and are biodegradable and biocompatible in nature as opposed to petrochemically derived plastics. PHBs have advanced applications in medical sector, packaging industries, nanotechnology and agriculture, among others. PHB is ...
journal_title：Bioresource technology
pub_type： 杂志文章,评审
doi：10.1016/j.biortech.2020.123536
更新日期：2020-09-01 00:00:00
abstract：:Inoculated with mature aerobic granular sludge in a sequencing batch reactor, gradually increasing the proportion of municipal sludge deep dewatering filtrate in influent, aerobic granular sludge was domesticated after 84 days and maintained its structure during the operation. The domesticated AGS was yellowish-brown,...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2014.06.094
更新日期：2014-10-01 00:00:00
abstract：:A cellulolytic, acetic acid producing anaerobic bacterial isolate, Gram negative, rod-shaped, motile, terminal oval shaped endospore forming bacterium identified as Clostridium lentocellum SG6 based on physiological and biochemical characteristics. It produced acetic acid as a major end product from cellulose fermenta...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/s0960-8524(01)00094-3
更新日期：2001-12-01 00:00:00
abstract：:The metabolizing potential of a bacterial strain Rhodococcus MTCC 6716, isolated from the gut of an Indian earthworm (Metaphire posthuma) was studied for endosulfan bioremediation. In the present work, the optimum conditions for the maximum growth, kinetic of endosulfan degradation, regression equation, half life and ...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2010.10.005
更新日期：2011-02-01 00:00:00
abstract：:A rapid empirical assay is presented for assessing the phenotypic stability of continuous cultures of recombinant bacteria containing transposed pdc and adh genes for ethanol production. The method measures spectrophotometrically the rate of colour formation when cells oxidize added ethanol to acetaldehyde in the pres...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2009.01.013
更新日期：2009-06-01 00:00:00
abstract：:A lipase gene (Lip) of the Aspergillus niger was de novo synthesized and expressed in the Trichoderma reesei under the promoter of the cellobiohydrolase I gene (cbh1). RNAi-mediated gene silencing was successfully used to further improve the recombinant lipase production via down-regulation of CBHI which comprised mor...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2012.01.013
更新日期：2012-04-01 00:00:00
abstract：:Dried biomass of Rhizopus oligosporus produced from food processing wastewater was used as an adsorbent for copper ions in water. The adsorption process was carried out in a batch process and the effects of contact time (1-48 h), initial pH (2.0-6.0), initial metal ion concentration (20-100 mg L(-1)) and temperature (...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2007.09.017
更新日期：2008-07-01 00:00:00
abstract：:The application potential of duckweed (Lemna japonica 0234) and water hyacinth (Eichhornia crassipes) were compared in two pilot-scale wastewater treatment systems for more than one year. The results indicated duckweed had the same total nitrogen (TN) recovery rate as water hyacinth (0.4 g/m(2)/d) and a slightly lower...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2014.04.018
更新日期：2014-07-01 00:00:00
abstract：:This study prepared a carboxylic functionalized bioadsorbent that met the "4-E" criteria: Efficient, Economical, Environmentally friendly, and Easily-produced. Sesame straw (Sesamum indicum L.) was functionalized through treatment with citric acid (SSCA) and tartaric acid (SSTA). The products were examined for adsorpt...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2017.04.066
更新日期：2017-08-01 00:00:00
abstract：:There are about 130,000 hectares of land in South Africa that have been under black wattle plantation for a long time and whose soils have become more acidic than those from contiguous land without the tree. This incubation study investigated the effectiveness of lime, chicken manure and leaf litter ash to ameliorate ...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/s0960-8524(02)00065-2
更新日期：2002-10-01 00:00:00
abstract：:The current study presents a comprehensive comparison towards the potential of different microalgal-based materials for the removal of hexavalent chromium (Cr(VI)) from water. Among the tested materials, microalgal biochar showed the highest removal efficiency (100%) of Cr(VI). The highest monolayer estimated adsorpti...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2019.122064
更新日期：2019-12-01 00:00:00
abstract：:A novel denitrifying phosphorus-accumulating bacterium was isolated from contaminated sediment and identified as Pseudomonas stutzeri ADP-19. Bio-safety assays demonstrated that the strain was γ-hemolytic, antibiotic-sensitive, and had no decarboxylase activity. It removed 96.5% of NH4+-N and 73.3% of PO43--P (at init...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2020.124445
更新日期：2021-02-01 00:00:00
abstract：:A process for the production of l-amino-acids concentrates from microalgae biomass by enzymatic hydrolysis has been developed. The process includes pre-treatment for cell-disruption, enzymatic hydrolysis and final separation by centrifugation. Thermal and mechanical cell-disruption methods have been tested, selecting ...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2012.02.094
更新日期：2012-05-01 00:00:00
abstract：:Gluconobacter oxydans can rapidly and effectively transform glycerol to dihydroxyacetone (DHA) by membrane-bound quinoprotein sorbitol dehydrogenase (mSLDH). Two mutant strains of GDHE Δadh pBBR-PtufBsldAB and GDHE Δadh pBBR-sldAB derived from the GDHE strain were constructed for the enhancement of DHA production. Gro...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2012.03.013
更新日期：2012-08-01 00:00:00
abstract：:Processes that can convert lignocellulosic biomass into biofuels and chemicals are particularly attractive considering renewability and minimal environmental impact. Ionic liquids (ILs) have been used as novel solvents in the process development in that they can effectively deconstruct recalcitrant lignocellulosic bio...
journal_title：Bioresource technology
pub_type： 杂志文章,评审
doi：10.1016/j.biortech.2020.124522
更新日期：2021-02-01 00:00:00
abstract：:Fast pyrolysis was performed on torrefied loblolly pine and the collected bio-oils were analyzed to compare the effect of the torrefaction treatment on their quality. The results of the analyses show that bio-oils produced from torrefied wood have improved oxygen-to-carbon ratios compared to those from the original wo...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2012.01.159
更新日期：2012-05-01 00:00:00
abstract：:Enzymatically synthesized lauroyl glucose emulsified different hydrophobic substrates when assayed spectrophotometrically. Stable emulsions were formed with triglycerides as well as with hydrocarbons. There was a linear relation between the concentration of lauroyl glucose (50-450 microg) and emulsification activity u...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2006.05.031
更新日期：2007-05-01 00:00:00
abstract：:Both short-term and long-term exposure experiments were carried out to investigate the influence of magnetic nanoparticles (NPs) on activated sludge. The short-term presence of 50-200 mg/L of NPs decreased total nitrogen (TN) removal efficiencies, resulted from the acute toxicity of a shock load of NPs. However, long-...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2013.06.041
更新日期：2013-09-01 00:00:00
