Abstract：
:Six artificial communities with different function or biodiversity were reconstructed by six typical bioleaching species for chalcopyrite leaching. Absence of sulfur oxidizers in communities significantly reduced copper extraction rates, and low diversity communities also exhibited slightly poor bioleaching performances. The variations of pH, redox potential, ferrous and copper ions indicated that the community with both sulfur oxidizers and high diversity showed fast adaptation to the environment and rapid dissolution of chalcopyrite. Integrated analysis of mineralogical and microbial parameters demonstrated that functional types of microorganisms made more contributions in mediating chalcopyrite dissolution than microbial diversity. Further correlation analysis between microbial types and chalcopyrite dissolution performances showed that sulfur oxidizers, especially Acidithiobacillus caldus, could greatly accelerate chalcopyrite dissolution by regulating solution physicochemical factors, such as redox potential and pH. This study provided a theoretical basis for improving bioleaching efficiency by balancing microbial functional types and biodiversity.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Tao J,Liu X,Luo X,Teng T,Jiang C,Drewniak L,Yang Z,Yin Hdoi
10.1016/j.biortech.2020.124219subject
Has Abstractpub_date
2021-01-01 00:00:00pages
124219eissn
0960-8524issn
1873-2976pii
S0960-8524(20)31493-0journal_volume
319pub_type
杂志文章abstract：:In this study, the effect of microalgal strains on the formation of algal-bacterial biofloc was investigated in liquid digestate pretreated by a sequencing batch reactor (SBR), which loaded much aerobic bacteria from activated sludge. Six microalgal strains resulted in three cases: no-bioflocculation (Scenedesmus obli...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2019.121741
更新日期：2019-10-01 00:00:00
abstract：:Reusing supernatant of microalgae culture medium can have inhibitory or toxic effects on the biomass production because of the release of organic metabolites by cells in the culture medium during their growth. This work investigated the impact of Chlorella vulgaris medium recycling on culture productivity, cells quali...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2013.01.025
更新日期：2013-03-01 00:00:00
abstract：:The possibility of using anaerobic digestate effluent (ADE) to replace freshwater and nutrients for bioethanol production was explored. The ethanol concentration yielded from ADE and post-centrifuged ADE supernatant was 79.60±1.75 g/L and 78.33±1.66 g/L, respectively, with a 24% dry mass (DM) of soft wheat. Ethanol pr...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2010.08.088
更新日期：2011-01-01 00:00:00
abstract：:A highly selective approach to produce levulinic acid from cellulose was developed via microwave-assisted synthesis in SO3H-functionalized ionic liquids (SFILs). The effects of reaction conditions and ionic liquid structures on the yield of levulinic acid have been investigated, where the highest yield of 55.0% was ob...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2012.12.132
更新日期：2013-02-01 00:00:00
abstract：:The microbial community in endogenous denitrification and denitrifying phosphorus removal treatment at transcription level was unknown. This study first confirmed the expression of actually active bacteria in endogenous denitrification and denitrifying phosphorus removal system to treat low C/N municipal wastewater. N...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2019.122454
更新日期：2020-02-01 00:00:00
abstract：:Unlike light torrefaction at 200 °C (B200), the mild (250 °C) and severe (300 °C) torrefaction pretreatments (B250 and B300) significantly increased the calorific value, reduced the oxygen content and improved the surface morphology for bamboo residues (BR). The main oxygen-removing carriers of BR during torrefaction ...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2020.122960
更新日期：2020-05-01 00:00:00
abstract：:The aim of this work was to compare the impact of inoculation density on the rate of cellulose hydrolysis by a rumen derived culture with that of a microbial enrichment from an organic waste anaerobic digester. The results showed a linear relationship between the mass of biomass at the start of the first order degrada...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2007.09.070
更新日期：2008-07-01 00:00:00
abstract：:This study compared biomass gasification based syngas-to-distillate (S2D) systems using techno-economic analysis (TEA). Three cases, state of technology (SOT), goal, and conventional, were compared in terms of performance and cost. The SOT case represented the best available experimental results for a process starting...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2012.04.027
更新日期：2012-08-01 00:00:00
abstract：:The combination of tertiary wastewater treatment and microalgal lipid production is considered to be a promising approach to water eutrophication as well as energy crisis. To intensify wastewater treatment and microalgal biofuel production, the effect of organic and inorganic carbon on algal growth and nutrient remova...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2015.04.053
更新日期：2015-08-01 00:00:00
abstract：:Pretreatment is required to destroy recalcitrant structure of lignocelluloses and then transform into fermentable sugars. This study assessed techno-economics of steam explosion, dilute sulfuric acid, ammonia fiber explosion and biological pretreatments, and identified bottlenecks and operational targets for process i...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2017.02.068
更新日期：2017-05-01 00:00:00
abstract：:In this study, a flat plate flowcell was modified to provide a reactor system that could maintain anaerobic, cellulolytic biofilms while providing the data needed to carry out a chemical oxygen demand mass balance to determine the cellulose digestion rates. The results showed that biofilms could be observed to grow an...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2008.06.028
更新日期：2009-01-01 00:00:00
abstract：:A novel and economical method was used to optimize bacterial growth and bioemulsan production. Acinetobacter calcoaceticus PTCC 1641 was applied in an innovated synthetic medium comprised whey and mineral salt medium (MSM) in ratio of 1:1 in a shaken flask bioreactor. The optimum inoculum size, shaking frequency rate ...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2010.07.009
更新日期：2010-12-01 00:00:00
abstract：:Microwave pyrolysis of distillers dried grain with solubles (DDGS) was investigated to determine the effects of pyrolytic conditions on the yields of bio-oil, syngas, and biochar. Pyrolysis process variables included reaction temperature, time, and power input. Microwave pyrolysis of DDGS was analyzed using response s...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2011.02.050
更新日期：2011-05-01 00:00:00
abstract：:The potential of rice husks and straw as adsorbents after being processed by subcritical water hydrolysis (SWH) was investigated. The influences of temperature (453, 493 and 533 K) and liquid/solid ratio (7.5 and 15 g water/g biomass) on the rice straw and rice husks characteristics and on the adsorption capacity of 2...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2019.03.110
更新日期：2019-07-01 00:00:00
abstract：:Microalgae contain about 50% of carbon, which means that a total of 1.83 ton of CO2 is needed to produce 1 ton of microalgae. The cost of CO2 supply for microalgal large scale cultivation should be considered and the low CO2 fixation efficiency by microalgae will lead to much more expenditure of CO2. In this study, a ...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2013.03.025
更新日期：2013-05-01 00:00:00
abstract：:Making full use of lipid and carbohydrate in microalgae for joint production of biodiesel and bioethanol may create a potential way to cut the high cost of single biofuel production from microalgae. Compared with conventional unicellular oleaginous microalgae, filamentous microalgae Tribonema sp. is richer in lipid an...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2014.09.032
更新日期：2014-11-01 00:00:00
abstract：:In this study, actinobacteria agent including Streptomyces sp. and Micromonospora sp. were inoculated during chicken manure composting by different inoculation methods. The effect of different treatments on cellulose degradation and the relationship between inoculants and indigenous actinobacteria were investigated du...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2016.07.117
更新日期：2016-11-01 00:00:00
abstract：:Physico-chemical properties of gelatin extracted from rainbow trout (Onchorhynchus mykiss) skin were optimized using response surface methodology (RSM). Central rotatable composite design was applied to study the combined effects of NaOH concentration (0.01-0.21 N), acetic acid concentration (0.01-0.21 N) and pre-trea...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2010.02.071
更新日期：2010-08-01 00:00:00
abstract：:A transferase was isolated, purified and characterised from Aspergillus aculeatus. The enzyme exhibited a pH and temperature optima of 6.0 and 60 degrees C, respectively and under such conditions remained stable with no decrease in activity after 5h. The enzyme was purified 7.1 fold with a yield of 22.3% and specific ...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2008.10.022
更新日期：2009-03-01 00:00:00
abstract：:Herein, the design of nanocomposite (NC) formulations that consist of metal enzyme cofactors, highly conductive carbon materials, DIET activators, to boost AD biogas production from anaerobically incubated cattle manure are investigated and discussed. Three different NC formulations were designed and synthesized: zinc...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2020.123350
更新日期：2020-08-01 00:00:00
abstract：:The influence of predation on the biofilm activated sludge (BAS) process is studied using a unified model that incorporates hydrolysis and predation phenomena into the two stages of the BAS system: moving bed biofilm reactor pre-treatment (bacterial-predator stage) and activated sludge (predator stage). The unified mo...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2016.08.107
更新日期：2016-11-01 00:00:00
abstract：:Enzymes, especially proteases, have become an important and indispensable part of the processes used by the modern food and feed industry to produce a large and diversified range of products for human and animal consumption. A cysteine protease, used extensively in the food industry, was purified from germinated wheat...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/s0960-8524(03)00193-7
更新日期：2004-02-01 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 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：:Bacillus cereus QQ308 produced antifungal hydrolytic enzymes, comprising chitinase, chitosanase and protease, when grown in a medium containing shrimp and crab shell powder (SCSP) produced from marine waste. The growth of the plant-pathogenic fungi Fusarium oxysporum, Fusarium solani, and Pythium ultimum were consider...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2006.05.005
更新日期：2007-04-01 00:00:00
abstract：:Membrane fouling mitigation was observed during the development of novel sponge membrane bioreactor coupled with fiber bundle anoxic bio-filter (AF-MBMBR). Soluble microbial product (SMP) was found to be positively correlated with membrane fouling. To further clarify the mechanism of fouling mitigation, the effects of...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2018.06.067
更新日期：2018-10-01 00:00:00
abstract：:The membrane fouling mechanism was studied in treating succinic acid fermentation broth during dead-end ultrafiltration. Different membranes were used and two models were applied to analyze the fouling mechanism. Resistance-in-series model was applied to determine the main factor that caused the operation resistance. ...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2012.03.099
更新日期：2012-07-01 00:00:00
abstract：:Five different pre-treatments were investigated to enhance the solubilisation and anaerobic biodegradability of kitchen waste (KW) in thermophilic batch and continuous tests. In the batch solubilisation tests, the highest and the lowest solubilisation efficiency were achieved with the thermo-acid and the pressure-depr...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2010.07.122
更新日期：2011-01-01 00:00:00
abstract：:A two-stage membrane process for the separation of galactose, 5-hydroxymethylfurfural (5-HMF) and levulinic acid (LA) has been proposed. The first step of nanofiltration (NF) is to remove 5-HMF and LA from galactose solution obtained by the hydrolysis of agarose, the main component of red algal galactan for the reduct...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2013.04.068
更新日期：2013-07-01 00:00:00
abstract：:In this study, a novel algal biomass production method using a sediment microbial fuel cell (SMFC) system was assessed. Under the experimental conditions, CO(2) generation from the SMFC and its rate of increase were found to be dependent on the current generated from the SMFC. However, the CH(4) production rate from t...
journal_title：Bioresource technology
pub_type： 杂志文章
doi：10.1016/j.biortech.2011.06.039
更新日期：2012-04-01 00:00:00
