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https://www.readbyqxmd.com/read/28774676/microalgal-hydrogen-production-a-review
#1
REVIEW
Wanthanee Khetkorn, Rajesh P Rastogi, Aran Incharoensakdi, Peter Lindblad, Datta Madamwar, Ashok Pandey, Christian Larroche
Bio-hydrogen from microalgae including cyanobacteria has attracted commercial awareness due to its potential as an alternative, reliable and renewable energy source. Photosynthetic hydrogen production from microalgae can be interesting and promising options for clean energy. Advances in hydrogen-fuel-cell technology may attest an eco-friendly way of biofuel production, since, the use of H2 to generate electricity releases only water as a by-product. Progress in genetic/metabolic engineering may significantly enhance the photobiological hydrogen production from microalgae...
July 17, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28773202/anti-inflammatory-immunomodulatory-and-tissue-repair-activity-on-human-keratinocytes-by-green-innovative-nanocomposites
#2
Pierfrancesco Morganti, Alessandra Fusco, Iole Paoletti, Brunella Perfetto, Paola Del Ciotto, Marco Palombo, Angelo Chianese, Adone Baroni, Giovanna Donnarumma
The use of raw materials obtained by waste and processed through innovative industrial methodologies has generated an industry of about a trillion dollars in a short time, and in the near future will provide resources and services for the conservation and sustainable use of natural resources in order to ensure a better and fairer welfare for the human race. The production of nano-fiber chitin non-woven tissue is in accordance with the Organization for Economic Co-operation and Development (OECD) and European Union (EU) bio-economic programs: 100% biodegradable, ecological, and therefore useful in decreasing dependence on fossil fuel resources...
July 22, 2017: Materials
https://www.readbyqxmd.com/read/28772533/a-bio-electro-fenton-system-employing-the-composite-fepc-cnt-ss316-cathode
#3
Yi-Ta Wang, Ruei-Shiang Wang
Bio-electro-Fenton microbial fuel cells generate energy through the decomposition of organic matter by microorganisms. The generated electricity drives a Fenton reaction in a cathode chamber, which can be used for the decolorization of dye wastewater. Most of the previous works added expensive platinum catalyst to improve the electrical property of the system. In this research, aligned carbon nanotubes (CNTs) were generated on the surface of SS316 stainless steel by chemical vapor deposition, and an iron phthalocyanine (FePc) catalyst was added to fabricate a compound (FePc/CNT/SS316) that was applied to the cathode electrode of the fuel cell system...
February 13, 2017: Materials
https://www.readbyqxmd.com/read/28770883/cytogenetic-bio-monitoring-in-fuel-station-attendants-of-gujrat-pakistan-through-buccal-micronucleus-cytome-assay
#4
Faiza Butt, Kausar Cheema, Numrah Nisar, Javed Qureshi
OBJECTIVE: To analyse buccal epithelial cells for scoring the frequency of cytogenetic toxicity in petrol pump workers. METHODS: The case-control study was conducted at the Lahore College for Women University, Lahore, Pakistan, from September 2014 to February 2015, and comprised petrol pump workers. Buccal micronucleus cytome assay was carried out by the collection of buccal cells after the written and oral consent of petrol pump workers. Frequencies of genotoxic (micronucleated and binucleated) and cytotoxic (karryorhetic and karyolitic) cells were scored and compared with the control group...
July 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28705423/carbon-nanotube-fiber-mats-for-microbial-fuel-cell-electrodes
#5
Brigitte Delord, Wilfrid Neri, Karen Bertaux, Alain Derre, Isabelle Ly, Nicolas Mano, Philippe Poulin
Novel carbon nanotube based electrodes of microbial fuel cells (MFC) have been developed. MFC is a promising technology for the wastewater treatment and the production of electrical energy from redox reactions of natural substrates. Performances of such bio-electrochemical systems depend critically on the structure and properties of the electrodes. The presently developed materials are made by weaving fibers solely comprised of carbon nanotubes. They exhibit a large scale porosity controlled by the weaving process...
July 1, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28702371/hydrogen-from-algal-biomass-a-review-of-production-process
#6
REVIEW
Archita Sharma, Shailendra Kumar Arya
Multifariousness of biofuel sources has marked an edge to an imperative energy issue. Production of hydrogen from microalgae has been gathering much contemplation right away. But, mercantile production of microalgae biofuels considering bio-hydrogen is still not practicable because of low biomass concentration and costly down streaming processes. This review has taken up the hydrogen production by microalgae. Biofuels are the up and coming alternative to exhaustible, environmentally and unsafe fossil fuels...
September 2017: Biotechnology Reports
https://www.readbyqxmd.com/read/28673517/semi-continuous-production-of-high-activity-pectinases-by-immobilized-rhizopus-oryzae-using-tobacco-wastewater-as-substrate-and-their-utilization-in-the-hydrolysis-of-pectin-containing-lignocellulosic-biomass-at-high-solid-content
#7
REVIEW
Yu-Xi Zheng, Yuan-Liang Wang, Jun Pan, Jian-Rong Zhang, Ya Dai, Kun-Yan Chen
In this study, highly reactive endo- and exo-polygalacturonases (PGs) were produced from the tobacco industry wastewater using immobilized Rhizopus oryzae. Compared with free cells, immobilized cells increased enzyme activity 2.8-fold and reduced production time to 24h by shake-flask production. Moreover, the immobilized cells enabled the semi-continuous production of enzymes through repeated-batch mode for seven consecutive cycles in a scale-up bioreactor. During the first five cycles, the average endo-PG and exo-PG activities reached 307...
October 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28664270/curcin-c-a-novel-type-i-ribosome-inactivating-protein-from-the-post-germinating-cotyledons-of-jatropha-curcas
#8
Yangxue Zhang, Qian Yang, Chenyang Li, Mengmeng Ding, Xueyan Lv, Chengqiu Tao, Hongwu Yu, Fang Chen, Ying Xu
A novel type I ribosome-inactivating protein (RIP), designated as curcin C, was purified from Jatropha curcas, an important feedback source of bio-fuel. Molecular mass and isoelectric point of curcin C were 31.398 kDa and 7.12 as detected by MALTI-TOF assay and capillary electrophoresis assay, respectively. N-terminal sequence and LC-MS/MS analyses confirmed that curcin C is a type I RIP having high homology, but not the exactly the same with curcin, another type 1 RIP isolated from the endosperm of J. curcas...
June 29, 2017: Amino Acids
https://www.readbyqxmd.com/read/28623567/molecular-identification-and-comparative-evaluation-of-tropical-marine-microalgae-for-biodiesel-production
#9
Sanyo Sabu, I S Bright Singh, Valsamma Joseph
Marine microalgae have emerged as important feedstock for liquid biofuel production. The identification of lipid-rich native microalgal species with high growth rate and optimal fatty acid profile and biodiesel properties is the most challenging step in microalgae-based biodiesel production. In this study, attempts have been made to bio-prospect the biodiesel production potential of marine and brackish water microalgal isolates from the west coast of India. A total of 14 microalgal species were isolated, identified using specific molecular markers and based on the lipid content; seven species with total lipid content above 20% of dry cell weight were selected for assessing biodiesel production potential in terms of lipid and biomass productivities, nile red fluorescence, fatty acid profile and biodiesel properties...
August 2017: Marine Biotechnology
https://www.readbyqxmd.com/read/28601778/determination-of-hemicellulose-cellulose-and-lignin-content-using-visible-and-near-infrared-spectroscopy-in-miscanthus-sinensis
#10
Xiaoli Jin, Xiaoling Chen, Chunhai Shi, Mei Li, Yajing Guan, Chang Yeon Yu, Toshihiko Yamada, Erik J Sacks, Junhua Peng
Lignocellulosic components including hemicellulose, cellulose and lignin are the three major components of plant cell walls, and their proportions in biomass crops, such as Miscanthus sinensis, greatly impact feed stock conversion to liquid fuels or bio-products. In this study, the feasibility of using visible and near infrared (VIS/NIR) spectroscopy to rapidly quantify hemicellulose, cellulose and lignin in M. sinensis was investigated. Initially, prediction models were established using partial least squares (PLS), least squares support vector machine regression (LSSVR), and radial basis function neural network (RBF_NN) based on whole wavelengths...
October 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28578856/environmental-performances-of-different-configurations-of-a-material-recovery-facility-in-a-life-cycle-perspective
#11
Filomena Ardolino, Chiara Berto, Umberto Arena
The study evaluated the environmental performances of an integrated material recovery facility (MRF) able to treat 32kt/y of unsorted mixed waste, made of residuals from household source separation and separate collection. The facility includes a mechanical sorting platform for the production of a solid recovered fuel (SRF) utilized in an external waste-to-energy plant, bio-cells for tunnel composting of organic fraction, and a sanitary landfill for the safe disposal of ultimate waste. All the MRF sub-units have been analysed in depth in order to acquire reliable data for a life cycle assessment study, focused on the environmental performances of different configurations of the facility...
June 1, 2017: Waste Management
https://www.readbyqxmd.com/read/28550989/biosynthesis-of-medium-chain-length-alkanes-for-bio-aviation-fuel-by-metabolic-engineered-escherichia-coli
#12
Meng Wang, Kaili Nie, Hao Cao, Haijun Xu, Yunming Fang, Tianwei Tan, Jan Baeyens, Luo Liu
The aim of this work was to study the synthesis of medium-chain length alkanes (MCLA), as bio-aviation product. To control the chain length of alkanes and increase the production of MCLA, Escherichia coli cells were engineered by incorporating (i) a chain length specific thioesterase from Umbellularia californica (UC), (ii) a plant origin acyl carrier protein (ACP) gene and (iii) the whole fatty acid synthesis system (FASs) from Jatropha curcas (JC). The genetic combination was designed to control the product spectrum towards optimum MCLA...
September 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28535471/graphene-oxide-supported-carbon-nanofiber-like-network-derived-from-polyaniline-a-novel-composite-for-enhanced-glucose-oxidase-bioelectrode-performance
#13
Zepeng Kang, Kailong Jiao, Xinping Xu, Ruiyun Peng, Shuqiang Jiao, Zongqian Hu
A three-dimensional architecture of PANI@GO hybrid was synthesized via in-situ polymerization of aniline monomers on the surface of graphene oxide (GO) and carbonized at 1600°C. The SEM images showed that surfaces of planar GO were covered by a compact nanofiber-like polyaniline (PANI) layer which presented an interconnected network. Nanofiber-like PANI on the GO surface was mostly preserved and became the carbon nanofibers (CNFs) after carbonization. The TEM images showed that the carbonized PANI grew seamlessly on the GO surface and served as conductive "network" between interlayers of GO...
May 12, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28528426/building-a-bio-based-industry-in-the-middle-east-through-harnessing-the-potential-of-the-red-sea-biodiversity
#14
REVIEW
Jens Nielsen, John Archer, Magbubah Essack, Vladimir B Bajic, Takashi Gojobori, Ivan Mijakovic
The incentive for developing microbial cell factories for production of fuels and chemicals comes from the ability of microbes to deliver these valuable compounds at a reduced cost and with a smaller environmental impact compared to the analogous chemical synthesis. Another crucial advantage of microbes is their great biological diversity, which offers a much larger "catalog" of molecules than the one obtainable by chemical synthesis. Adaptation to different environments is one of the important drives behind microbial diversity...
June 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28526899/electricity-generation-from-real-industrial-wastewater-using-a-single-chamber-air-cathode-microbial-fuel-cell-with-an-activated-carbon-anode
#15
Hend Omar Mohamed, M Obaid, Enas Taha Sayed, Yang Liu, Jinpyo Lee, Mira Park, Nasser A M Barakat, Hak Yong Kim
This study introduces activated carbon (AC) as an effective anode for microbial fuel cells (MFCs) using real industrial wastewater without treatment or addition of external microorganism mediators. Inexpensive activated carbon is introduced as a proper electrode alternative to carbon cloth and carbon paper materials, which are considered too expensive for the large-scale application of MFCs. AC has a porous interconnected structure with a high bio-available surface area. The large surface area, in addition to the high macro porosity, facilitates the high performance by reducing electron transfer resistance...
August 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/28498871/towards-implementation-of-cellular-automata-in-microbial-fuel-cells
#16
Michail-Antisthenis I Tsompanas, Andrew Adamatzky, Georgios Ch Sirakoulis, John Greenman, Ioannis Ieropoulos
The Microbial Fuel Cell (MFC) is a bio-electrochemical transducer converting waste products into electricity using microbial communities. Cellular Automaton (CA) is a uniform array of finite-state machines that update their states in discrete time depending on states of their closest neighbors by the same rule. Arrays of MFCs could, in principle, act as massive-parallel computing devices with local connectivity between elementary processors. We provide a theoretical design of such a parallel processor by implementing CA in MFCs...
2017: PloS One
https://www.readbyqxmd.com/read/28495054/phasic-availability-of-terminal-electron-acceptor-on-oxygen-reduction-reaction-in-microbial-fuel-cell
#17
J Shanthi Sravan, Sai Kishore Butti, Anil Verma, S Venkata Mohan
Oxygen-reduction reactions (ORR) plays a pivotal role in determining microbial fuel cells (MFC) performance. In this study, an attempt to determine the influence of the phasic availability of terminal electron acceptor (TEA) on ORR was made. Two MFCs operated with dissolved oxygen (MFC-DC) and air (MFC-SC) as TEA were constructed and analyzed in continuous mode under open and closed circuit conditions. The bio-electrochemical analysis showed a marked influence of dissolved oxygen resulting in a maximum power density with MFC-DC (769mW/m(2)) compared to MFC-SC (684mW/m(2))...
October 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28474550/microbial-routes-to-2r-3r-2-3-butanediol-recent-advances-and-future-prospects
#18
REVIEW
Neng-Zhong Xie, Xian-Rui Chen, Qing-Yan Wang, Dong Chen, Qi-Shi Du, Guo-Ping Zhou, Ri-Bo Huang
(2R,3R)-2,3-Butanediol has many industrial applications, such as it is used as an antifreeze agent and low freezing point fuel. In addition, it is particularly important to provide chiral groups in drugs. In recent years, this valuable bio-based chemical has attracted increasing attention, and significant progress has been made in the development of microbial cell factories for (2R,3R)-2,3-butanediol production. This article reviews recent advances and challenges in microbial routes to (2R,3R)-2,3- butanediol production, and highlights the metabolic engineering and synthetic biological approaches used to improve titers, yields, productivities, and optical purities...
2017: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/28451116/self-powered-fluorescence-display-devices-based-on-a-fast-self-charging-recharging-battery-mg-prussian-blue
#19
Hui Zhang, You Yu, Lingling Zhang, Yiwen Zhai, Shaojun Dong
Stimuli-responsive (such as voltage and/or light) fluorescence display systems have attracted particular attention in their promising fields of application. However, there are few examples of self-powered fluorescence display devices. Here we designed and fabricated a self-powered fluorescence display device based on a fast-charging/recharging battery. The specially designed battery was composed of a Prussian blue (PB) cathode and a magnesium metal anode with a high theoretical redox potential difference (∼2...
November 1, 2016: Chemical Science
https://www.readbyqxmd.com/read/28440014/biomass-derived-n-doped-porous-carbon-supported-single-fe-atoms-as-superior-electrocatalysts-for-oxygen-reduction
#20
Zhengping Zhang, Xinjin Gao, Meiling Dou, Jing Ji, Feng Wang
Exploring sustainable and high-performance electrocatalysts for the oxygen reduction reaction (ORR) is the crucial issue for the large-scale application of fuel cell technology. A new strategy is demonstrated to utilize the biomass resource for the synthesis of N-doped hierarchically porous carbon supported single-atomic Fe (SA-Fe/NHPC) electrocatalyst toward the ORR. Based on the confinement effect of porous carbon and high-coordination natural iron source, SA-Fe/NHPC, derived from the hemin-adsorbed bio-porphyra-carbon by rapid heat-treatment up to 800 °C, presents the atomic dispersion of Fe atoms in the N-doped porous carbon...
June 2017: Small
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