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Methane, Nitrous Oxide and Ammonia generation in full-scale swine wastewater purification facilities

Takashi Osada, Makoto Shiraishi, Teruaki Hasegawa, Hirofumi Kawahara

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 3, doi: 10.1007/s11783-017-0933-7

Abstract: process to remove nitrogen and biochemical oxygen demand (BOD) is reportedly cost-effective for swine wastewateris also generated from organic degradation under anaerobic conditions by microorganisms in manure or wastewaterMeasurements were conducted over several weeks at wastewater purification facilities for swine farms:Ammonia emissions were negligible in all of the measurements from the wastewater facilities.There was great variation in daily GHG emission factors measured in the actual wastewater treatment facilities

Keywords： Manure     Greenhouse gas     Denitrification     BOD/N     Nitrous oxide     Methane    

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Study on the Purification of Wastewater in the Constructed Wetland Based on GA－BP Network

Huang Juan,Wang Shihe,Luo Weiguo,Qian Weiyi ,Yan Lu

Strategic Study of CAE 2007, Volume 9, Issue 2,   Pages 79-83

Abstract:

As a new type of ecological technique in wastewater treatmen t field,Since the wastewater purification process in constructed wetland was a complex and nonlinear state affected

Keywords： constructed wetlands     wastewater purification     GA-BP network     orthogonal test    

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Bioinspired and biomimetic membranes for water purification and chemical separation: A review

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1412-8

Abstract:

•The history of biological and artificial water channels is reviewed.

Keywords： Aquaporins     Artificial water channels     Biomimetic membranes     Chemical separation and water purification    

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Advanced purification and comprehensive utilization of yellow phosphorous off gas

Ping NING,Xiangyu WANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2,   Pages 181-189 doi: 10.1007/s11783-014-0698-1

Abstract: Without appropriate purification and removal, this off gas has potential to cause severe pollution problemsIn this paper, the significance of purification and reutilization of yellow phosphorous off gas are exploredThe principles, processes, and main characteristics of the technologies for purification and reuse ofWe conclude that advanced purification and comprehensive reutilization can be an effective solution for

Keywords： yellow phosphorous off gas     purification     comprehensive utilization    

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Purification of

Y. LIU, M. PIETZSCH, J. ULRICH

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 37-42 doi: 10.1007/s11705-013-1303-z

Abstract: Here a case study of -asparaginase II out of a recombinant is presented. The target protein was obtained by simple cell disintegration and acetone precipitation. The -asparaginase II has been crystallized in three different forms in the following microbatch crystallization. The rod-shaped crystals (~400 μm edge length) were obtained at either 8°C or 22°C after 17 h by addition of PEG . The rectangular-shaped crystals were obtained after further recrystallization of the rod-shaped crystals. The rhombic-shaped crystals formed at 8°C after 12 days when cold ethanol was used instead of PEG . All crystallizations were performed in tris-acetate buffer (50 mmol·L , pH 5.1). By crystallization, the specific activity of -asparaginase II has increased 5-fold. The protein content and the purity of the crystals were evaluated by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). The more concentrated -asparaginase II out of an extract mixture and the presence of only less minor proteins after crystallization demonstrates that crystallization is an effective and mild method to purify the target protein. The single crystal X-ray diffraction pattern reveals that the crystals are proteins and the X-ray powder diffraction (XRPD) pattern shows clearly that the crystals forming in PEG and ethanol have different crystal structures.

Keywords： protein crystallization     L-asparaginase II     purification    

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A hybrid fuel cell for water purification and simultaneously electricity generation

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 1, doi: 10.1007/s11783-023-1611-6

Abstract:

● A novel hybrid fuel cell (F-HFC) was fabricated.

Keywords： Flow-through field     Hybrid fuel cell     Polyoxometalates     Water purification     Electricity generation    

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Pressure swing adsorption/membrane hybrid processes for hydrogen purification with a high recovery

Baojun Li,Gaohong He,Xiaobin Jiang,Yan Dai,Xuehua Ruan

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 2,   Pages 255-264 doi: 10.1007/s11705-016-1567-1

Abstract: The hybrid hydrogen purification processes were simulated using HYSYS and the processes were evaluatedcomparison, a PSA process and a membrane separation process were also used individually for hydrogen purification

Keywords： hydrogen purification     PSA     membrane separation     hybrid process    

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Nanofiltration for separation and purification of saccharides from biomass

Xianhui Li, Sheng Tan, Jianquan Luo, Manuel Pinelo

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 4,   Pages 837-853 doi: 10.1007/s11705-020-2020-z

Abstract: Saccharide production is critical to the development of biotechnology in the field of food and biofuel. The extraction of saccharide from biomass-based hydrolysate mixtures has become a trend due to low cost and abundant biomass reserves. Compared to conventional methods of fractionation and recovery of saccharides, nanofiltration (NF) has received considerable attention in recent decades because of its high selectivity and low energy consumption and environmental impact. In this review the advantages and challenges of NF based technology in the separation of saccharides are critically evaluated. Hybrid membrane processes, i.e., combining NF with ultrafiltration, can complement each other to provide an efficient approach for removal of unwanted solutes to obtain higher purity saccharides. However, use of NF membrane separation technology is limited due to irreversible membrane fouling that results in high capital and operating costs. Future development of NF membrane technology should therefore focus on improving material stability, antifouling ability and saccharide targeting selectivity, as well as on engineering aspects such as process optimisation and membrane module design.

Keywords： saccharides     nanofiltration membrane     hybrid membrane process     biomas    

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Selection and characterization of eight freshwater green algae strains for synchronous water purification

Jingjing ZHAN,Qiao ZHANG,Momei QIN,Yu HONG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 548-558 doi: 10.1007/s11783-016-0831-4

Abstract: The objective of this study is to select and characterize the candidate for synchronous water purificationHQ was the possible candidate for water purification coupled with lipid production.HQ to serve for algae-based synchronous biodiesel production and wastewater purification.

Keywords： freshwater microalgae     biomass production     lipid accumulation     nutrient removal    

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Hybrid energy harvesting systems for self-powered sustainable water purification by harnessing ambient

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1718-9

Abstract: List>

● Energy harvesters harness multiple energies for self-powered water purification

Keywords： Piezocatalysis     Solar energy     Waste heat     Decentralized water treatment     Point-of-use     Nanogenerator    

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nitrogen co-doped porous carbon derived from sodium alginate enhanced capacitive deionization for water purification

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2014-2024 doi: 10.1007/s11705-023-2346-4

Abstract: Capacitive deionization can alleviate water shortage and water environmental pollution, but performances are greatly determined by the electrochemical and desalination properties of its electrode materials. In this work, B and N co-doped porous carbon with micro-mesoporous structures is derived from sodium alginate by a carbonization, activation, and hydrothermal doping process, which exhibits large specific surface area (2587 m2·g‒1) and high specific capacitance (190.7 F·g‒1) for adsorption of salt ions and heavy metal ions. Furthermore, the materials provide a desalination capacity of 26.9 mg·g−1 at 1.2 V in 500 mg·L‒1 NaCl solution as well as a high removal capacity (239.6 mg·g‒1) and adsorption rate (7.99 mg·g‒1·min‒1) for Pb2+ with an excellent cycle stability. This work can pave the way to design low-cost porous carbon with high-performances for removal of salt ions and heavy metal ions.

Keywords： capacitance deionization     porous carbon     B/N co-doping     heavy metal ions     water purification    

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Occurrence and migration of microplastics and plasticizers in different wastewater and sludge treatmentunits in municipal wastewater treatment plant

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1577-9

Abstract:

● Reduce the quantifying MPs time by using Nile red staining.

Keywords： Microplastics     Municipal wastewater treatment plant     Phthalate esters     Thermal hydrolysis    

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The energy-free purification of trace thallium(I)-contaminated potable water using a high-selective filter

Frontiers of Chemical Science and Engineering doi: 10.1007/s11705-023-2379-8

Abstract: could cause a severe water crisis, which arouses the exploitation of highly-effective technology for purification

Keywords： membrane adsorption     Prussian blue     energy-free filtration     potable water     trace thallium(I)    

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New approaches to water purification for resource-constrained settings: Production of activated biochar

Mohit Nahata, Chang Y. Seo, Pradeep Krishnakumar, Johannes Schwank

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 194-208 doi: 10.1007/s11705-017-1647-x

Abstract: A significant portion of the world’s population does not have access to safe drinking water. This problem is most acute in remote, resource-constrained rural settings in developing countries. Water filtration using activated carbon is one of the important steps in treating contaminated water. Lignocellulosic biomass is generally available in abundance in such locations, such as the African rain forests. Our work is focused on developing a simple method to synthesize activated biochar from locally available materials. The preparation of activated biochar with diammonium hydrogenphosphate (DAP) as the activating agent is explored under N flow and air. The study, carried out with cellulose as a model biomass, provides some insight into the interaction between DAP and biomass, as well as the char forming mechanism. Various characterization techniques such as N physisorption, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy and Raman spectroscopy are utilized to compare the properties between biochar formed under nitrogen and partial oxidative conditions. At a temperature of 450 °C, the loading of DAP over cellulose is systematically varied, and its effect on activation is examined. The activated biochar samples are predominantly microporous in the range of concentrations studied. The interaction of DAP with cellulose is investigated and the nature of bonding of the heteroatoms to the carbonaceous matrix is elucidated. The results indicate that the quality of biochar prepared under partial oxidation condition is comparable to that of biochar prepared under nitrogen, leading to the possibility of an activated biochar production scheme on a small scale in resource-constrained settings.

Keywords： cellulose     DAP     activation     heteroatom     microporous    

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Purification of ice structuring protein complexes from winter wheat using Triton X-114 phase partitioning

Huaneng XU, Haiying CHEN, Weining HUANG,

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 4,   Pages 383-385 doi: 10.1007/s11705-009-0249-7

Abstract: The purification of ISP complexes from winter wheat was achieved using an aqueous two-phase system of

Keywords： separation technique     thermal hysteresis     cold-acclimated     purification     X-114    

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Title Author Date Type Operation

Methane, Nitrous Oxide and Ammonia generation in full-scale swine wastewater purification facilities

Takashi Osada, Makoto Shiraishi, Teruaki Hasegawa, Hirofumi Kawahara

Journal Article

Study on the Purification of Wastewater in the Constructed Wetland Based on GA－BP Network

Huang Juan,Wang Shihe,Luo Weiguo,Qian Weiyi ,Yan Lu

Journal Article

Bioinspired and biomimetic membranes for water purification and chemical separation: A review

Journal Article

Advanced purification and comprehensive utilization of yellow phosphorous off gas

Ping NING,Xiangyu WANG

Journal Article

Purification of

Y. LIU, M. PIETZSCH, J. ULRICH

Journal Article

A hybrid fuel cell for water purification and simultaneously electricity generation

Journal Article

Pressure swing adsorption/membrane hybrid processes for hydrogen purification with a high recovery

Baojun Li,Gaohong He,Xiaobin Jiang,Yan Dai,Xuehua Ruan

Journal Article

Nanofiltration for separation and purification of saccharides from biomass

Xianhui Li, Sheng Tan, Jianquan Luo, Manuel Pinelo

Journal Article

Selection and characterization of eight freshwater green algae strains for synchronous water purification

Jingjing ZHAN,Qiao ZHANG,Momei QIN,Yu HONG

Journal Article

Hybrid energy harvesting systems for self-powered sustainable water purification by harnessing ambient

Journal Article

nitrogen co-doped porous carbon derived from sodium alginate enhanced capacitive deionization for water purification

Journal Article

Occurrence and migration of microplastics and plasticizers in different wastewater and sludge treatmentunits in municipal wastewater treatment plant

Journal Article

The energy-free purification of trace thallium(I)-contaminated potable water using a high-selective filter

Journal Article

New approaches to water purification for resource-constrained settings: Production of activated biochar

Mohit Nahata, Chang Y. Seo, Pradeep Krishnakumar, Johannes Schwank

Journal Article

Purification of ice structuring protein complexes from winter wheat using Triton X-114 phase partitioning

Huaneng XU, Haiying CHEN, Weining HUANG,

Journal Article