Environmental Fate, Analysis Method and Treatment Technology of Bisphenol A: A Review

As one of major environmental endocrine disruptors (EEDs), bisphenol A (BPA) has been drawn increasingly lots of people in the world, which is also widely identified as an indispensable raw chemical in plastics production, food cans and dental composites. With increasing demand and production capacity of BPA, more BPA will enter into and contaminate the environment. So it has become a challenge that excess BPA jeopardizes the health of human being. Considering a pretty low dose of BPA existing in the environment, some advanced analysis techniques have been carried out to analysis BPA, such as HLPC, GC-MS, LC-MS. Compared with other physical and chemical treatment technology, biological treatment technology has the advantage of low cost and high efficiency.

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Design of On-Line Detection System for Paper Defects Based on Line-Scan Camera

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.536-537.268 ◽

2014 ◽

Vol 536-537 ◽

pp. 268-271

Author(s):

Ping He ◽

Chao Liu ◽

Meng Wang ◽

Sheng Mei Cao

Keyword(s):

High Efficiency ◽

Detection System ◽

Low Cost ◽

Digital Camera ◽

Line Detection ◽

Detection Scheme ◽

Line Scan ◽

On Line ◽

Increasing Demand ◽

Technology Level

Paper defects mean that there are some defects in the paper such as hole, emboss, and fold during the paper production, which mainly results from the limitation of technological level. In the past time, artificial visual inspection and off-line checking were often used to detect the paper defects. However, its shortcoming was highlighted along with the improvement of industrial technology level and increasing demand for paper. In order to realize the online detection and markers for paper defects, the project designs the on-line detection system based on line-scan digital camera. Firstly, the principle and detection scheme of the system for the paper defects was presented. Then the overall structure of the system was designed. After that, the hardware circuit of the system was designed using TMS320F2812 as main control chip. It mainly consists of the function of each module and the working process of the system. Finally, the software of the image acquisition system was presented. With the experimental verification, the system has advantages of low cost, high efficiency and strong resistance to interference. The functions and indexes achieved the design requirements.

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The Research Development of Basic Theory in Micro-Forming

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.850-851.192 ◽

2013 ◽

Vol 850-851 ◽

pp. 192-195

Author(s):

Xi Yang Sun ◽

Dong Mei Li

Keyword(s):

Size Effects ◽

Temperature Effects ◽

High Efficiency ◽

Low Cost ◽

Research Direction ◽

Basic Theory ◽

Future Research ◽

Micro Forming ◽

Increasing Demand ◽

Important Significance

With the increasing demand for high efficiency, low cost and the bulk, so the production of micro-forming has a very important significance. Firstly, the introduction of micro-forming is introduced in this paper. Then, its basic theory, including size effects and temperature effects, is presented. At last, a future research direction is highlighted.

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Self Cleaning High Efficiency Particulate Air (HEPA) Filtration Without Interrupting Process Flow

ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management, Parts A and B ◽

10.1115/icem2011-59347 ◽

2011 ◽

Author(s):

Chris Chadwick

Keyword(s):

Glass Fibre ◽

High Efficiency ◽

Low Cost ◽

Department Of Energy ◽

Fuel Production ◽

Process Flow ◽

Sintered Metal ◽

Self Cleaning ◽

Increasing Demand ◽

Clear Solution

The strategy of protecting the traditional glass fibre HEPA filtration train from it’s blinding contamination and the recovery of dust by the means of self cleaning, pre-filtration is a proven means in the reduction of ultimate disposal volumes and has been used within the Fuel Production Industry. However, there is an increasing demand in nuclear applications requiring elevated operating temperatures, fire resistance, moisture resistance and chemical composition that the existing glass fibre HEPA filtration cannot accommodate, which can be remedied by the use of a metallic HEPA filter media. Previous research suggests that the then costs to the Department of Energy (DOE), based on a five year life cycle, was $29.5 million for the installation, testing, removal and disposal of glass fibre HEPA filtration trains. Within these costs, $300 was the value given to the filter and $4,450 was given to the peripheral activity. Development of a low cost, cleanable, metallic, direct replacement of the traditional filter train will the clear solution. The Bergman et al work has suggested that a 1000 ft^3/min, cleanable, stainless HEPA could be commercially available for $5,000 each, whereas the industry has determined that the truer cost of such an item in isolation would be closer to $15,000. This results in a conflict within the requirement between ‘low cost’ and ‘stainless HEPA’. By proposing a system that combines metallic HEPA filtration with the ability to self clean without interrupting the process flow, the need for a tradition HEPA filtration train will be eliminated and this dramatically reduces the resources required for cleaning or disposal, thus presenting a route to reducing ultimate costs. The paper will examine the performance characteristics, filtration efficiency, flow verses differential pressure and cleanability of a self cleaning HEPA grade sintered metal filter element, together with data to prove the contention.

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THE IMPROVEMENT OF THE WATER TREATMENT TECHNOLOGY FOR THE KVASS PRODUCTION

Food Science and Technology ◽

10.15673/fst.v13i2.1404 ◽

2019 ◽

Vol 13 (2) ◽

Author(s):

O. Dulka ◽

V. Prybylskyi ◽

S. Oliynyk ◽

A. Kuts ◽

O. Kovalenko

Keyword(s):

Water Treatment ◽

High Efficiency ◽

Combined Treatment ◽

Technological Parameters ◽

Treatment Technology ◽

Rock Crystal ◽

Natural Minerals ◽

Water Conditioning ◽

Active Coal ◽

Physical And Chemical

The composition of water significantly affect the flow of the process and the main indicators of the finished drink. The article presents the results of theoretical and experimental researches on improvement of the technology of preparation of drinking water for the production of non-alcoholic fermented beverages, in particular, bread kvass. The high efficiency of the application of natural minerals – clinoptilolite, rock crystal and activated carbon with combined treatment of water in the technology of bread kvass is proven. The quality and usefulness of the product depend on the content of its impurities. The integrated action of investigated materials with adsorption, ion exchange and redox properties provides water conditioning and achievement of the intensification of the technological process and high organoleptic qualities of the finished product. The work presents the physical-mechanical characteristics of the investigated materials, technological parameters of treatment, the influence of filter materials on the organoleptic and physical and chemical parameters of water and finished product. The article also gives a taste-aroma profile of bread kvass, made from the use of prepared water. The materials of the conducted research testify to the expediency of water treatment for the production of bread kvass in the sequence of clinoptilolite, active coal, rock crystal with a filtration rate of 8–15 m / h. In this case, the total iron content is reduced by 5 times, the total stiffness decreases by 75%, permanganate oxidation is 9 times. It has been established that such processing allows for high organoleptic qualities of prepared water and end product and increases the tasting score of bread kvass by 7 times, with no unpleasant taste and aroma that is characteristic of chlorinated water and decreases the turbidity of the beverage as a result of a decrease in the overall rigidity of water.

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Thallus sectioning as an efficient monospore release method in Pyropia yezoensis (Bangiales, Rhodophyta)

Journal of Applied Phycology ◽

10.1007/s10811-019-01992-6 ◽

2019 ◽

Vol 32 (4) ◽

pp. 2195-2200 ◽

Cited By ~ 1

Author(s):

Nianci Chen ◽

Lei Tang ◽

Xiaowei Guan ◽

Rui Chen ◽

Min Cao ◽

...

Keyword(s):

High Efficiency ◽

Low Cost ◽

Economic Value ◽

Northern China ◽

Pyropia Yezoensis ◽

Effect Of Temperature ◽

Seeding Strategy ◽

Increasing Demand ◽

Short Time ◽

Release Method

AbstractThe red seaweed Pyropia yezoensis is a marine crop of important economic value and is widely cultivated in the coastal areas of northern China. The current seedling-raising system relies on the germination of conchospores, a process not fast enough to meet the increasing demand from farmers. In this study, we developed a monospore-dependent seedling method based on the asexual reproduction of the Pyropia thallus. The Pyropia thallus was physically sectioned into small pieces (microthalli) that were cultivated at 15 °C. The algal cells in the microthalli became morphologically condensed, underwent cell division, and then developed into monospores on the 5th day. The monospores were able to attach to the seeding rope in 24 h and germinated into healthy thalli. To optimize the efficiency of monospore release, we tested the effect of temperature and the size and original positions of the microthalli as well as the age of the mother thallus. Microthalli with a size of 30–50 cells from the middle and apex of 21-day-old thalli cultivated at 15 °C yielded the optimum production of monospores. Theoretically, in this thallus-to-thallus seeding strategy, 0.1 g of thallus could produce at least 107 monospores, with the same number of offspring thallus seedlings. Taking all of these advantages together, including the high efficiency, short time, low cost and easy operation, this physical sectioning method could serve as a promising seed source especially for new cultivars with superior traits in Pyropia farming and rapid replenishment of seedlings when thalli undergo disastrous diseases.

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Facile synthesis of mesoporous polymeric carbon nitride nanosheets anchored by Pt with ultralow loading for high-efficiency photocatalytic H2 evolution

Dalton Transactions ◽

10.1039/d1dt03554a ◽

2021 ◽

Author(s):

Siyuan Ye ◽

Changsheng Su ◽

Lili He ◽

Meng-Li Li ◽

Zheng Yan ◽

...

Keyword(s):

Carbon Nitride ◽

High Efficiency ◽

Low Cost ◽

H2 Evolution ◽

Energy Usage ◽

Facile Synthesis ◽

Facile Fabrication ◽

Increasing Demand ◽

Carbon Nitride Nanosheets ◽

Polymeric Carbon

Facile fabrication of low cost photocatalyst with enhanced activity and high atomic utilization has been in increasing demand for solar energy usage and/or conversion. In this work, a series of...

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Research on the Experimental Device of Combined Two-Phase ABR and SBR

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.507.677 ◽

2014 ◽

Vol 507 ◽

pp. 677-681

Author(s):

Ling Jing ◽

Xin Xia Wang

Keyword(s):

Mass Transfer ◽

Wastewater Treatment ◽

Biological Treatment ◽

High Efficiency ◽

Low Cost ◽

Rapid Development ◽

Water Environment ◽

Biofilm Reactor ◽

Treatment Technology ◽

Two Phase

With the rapid development of industrial and agricultural production in China, the industrial waste water and city wastewater discharged to water environment are increasing. Anaerobic biological treatment is a low-cost wastewater treatment technology and is also a combined technology of the wastewater treatment and energy recovery, it can be used as a core part of energy production and environmental protection system, its product can be actively used to result economic value. After in-depth and systematically study the mechanism and mass transfer theory of anaerobic biological treatment technology, this paper designs anaerobic reactor of high efficiency in mass transfer, namely the anaerobic baffled - elastic packing biofilm reactor.

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Energy and resource saving timber drying

Forestry Engineering Journal ◽

10.12737/6288 ◽

2014 ◽

Vol 4 (3) ◽

pp. 199-204

Author(s):

Курьянова ◽

Tatyana Kuryanova ◽

Платонов ◽

Aleksey Platonov ◽

Киселева ◽

...

Keyword(s):

High Efficiency ◽

Low Cost ◽

Production Capacity ◽

Climatic Conditions ◽

Resource Saving ◽

Dead End ◽

Long Duration ◽

Natural Wood ◽

Drying Section ◽

The Cost

Need of small woodworking companies in the efficient dryers of small capacity is very high. Used in industry dryers are very diverse in types and energy. Given that the processes of hydro-thermal treatment of wood are the most energy-intensive in woodworking technology, solutions to this problem are highly relevant. One of the most promising and low-cost ways is a combined method of drying timber with pre-atmospheric drying of wood. Natural wood drying is cheaper than chamber one. There are no expenses for the coolant, one of the major costs in drying chamber. One of the drawbacks of this dryer is the long duration and dependence on meteorological conditions. The solution to this problem is to create an incentive air circulation for material to be dried. For these purposes, the use of simple and cheap prefabricated elements of flow or dead-end type of shield materials, fitted with a fan, is possible. This design can also be the buffer stock for storing timber. Pre-drying of wood is made to a moisture content of 40-45%. Tests of this design have shown its high efficiency. The duration of subsequent chamber drying in the climatic conditions of Voronezh reduces by an average in 1,5 times, which is also reflected in the cost of the material being dried. In this case, the production capacity of the drying section of the company is increased by 20-35% depending on the species, the cross section of the material, the initial and transition humidity. Reduction of the specific heat consumption per 1 kg of evaporated moisture is about 10%. Drying of the wood becomes more equal, which helps to reduce shrinkage, reduce the value of internal residual stresses, which are one of the indicators of the quality of drying, as well as increased dimensional stability.

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