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Applying chemical sedimentation process in drinking water treatment plant to address the emergent arsenic

Pengfei LIN,Xiaojian ZHANG,Hongwei YANG,Yong LI,Chao CHEN

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1, Pages 50-57 doi: 10.1007/s11783-014-0733-2

Abstract: In response, we developed a chemical sedimentation technology to remove arsenic contaminants for waterwere conducted to investigate the efficiency of arsenic removal and the influencing factors of the chemicalsedimentation treatment process.The As(III) contaminants are more recalcitrant to chemical sedimentation, 75% for ferric coagulant and

Keywords： Arsenic spill chemical sedimentation coagulation drinking water emergency treatment

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Preparation and sedimentation behavior of conductive polymeric nanoparticles

WANG Jixiao, LIU Rui, ZHANG Xiaoyan, ZHOU Zhibin, WANG Zhi, WANG Shichang

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3, Pages 231-235 doi: 10.1007/s11705-008-0055-7

Abstract: FeO nanoparticles were first prepared by a chemical co-precipitation method, and then FeO/PPY core-shellThe sedimentation behavior of FeO/PPY core-shell magnetic nanoparticles in electrolyte and soluble polymerThe experimental results indicate that the sedimentation of particles can be controlled by adjusting

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Prediction of hydro-suction dredging depth using data-driven methods

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3, Pages 652-664 doi: 10.1007/s11709-021-0719-7

Abstract: In this study, data-driven methods (DDMs) including different kinds of group method of data handling (GMDH) hybrid models with particle swarm optimization (PSO) and Henry gas solubility optimization (HGSO) methods, and simple equations methods were applied to simulate the maximum hydro-suction dredging depth (h_s). Sixty-seven experiments were conducted under different hydraulic conditions to measure the h_s. Also, 33 data samples from three previous studies were used. The model input variables consisted of pipeline diameter (d), the distance between the pipe inlet and sediment level (Z), the velocity of flow passing through the pipeline (u₀), the water head (H), and the medium size of particles (D₅₀). Data-driven simulation results indicated that the HGSO algorithm accurately trains the GMDH methods better than the PSO algorithm, whereas the PSO algorithm trained simple simulation equations more precisely. Among all used DDMs, the integrative GMDH-HGSO algorithm provided the highest accuracy (RMSE = 7.086 mm). The results also showed that the integrative GMDHs enhance the accuracy of polynomial GMDHs by ~14.65% (based on the RMSE).

Keywords： sedimentation water resources dam engineering machine learning heuristic

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Classification of contaminants and treatability evaluation of domestic wastewater

WANG Xiaochang, JIN Pengkang, ZHAO Hongmei, MENG Lingba

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1, Pages 57-62 doi: 10.1007/s11783-007-0011-7

Abstract: All these could be easily removed by sedimentation or coagulation/sedimentation.

Keywords： Long-term sampling selection accordance wastewater treatment coagulation/sedimentation

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Special issue on “Green chemical process and intensification”

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 11, Pages 1533-1535 doi: 10.1007/s11705-022-2263-y

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Special Issue for the Future Chemical Engineering Scholars of Global Chinese Chemical Engineering Symposium

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6, Pages 775-776 doi: 10.1007/s11705-022-2172-0

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Insight of chemical environmental risk and its management from the vinyl chloride accident

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 4, doi: 10.1007/s11783-023-1652-x

Abstract: Finally, this accident suggests that further efforts should be taken to bridge the gap between chemical

Keywords： Vinyl chloride Combustion Chemical safety management Environmental risk Emerging contaminants

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Effects of sulfur on variations in the chemical speciation of heavy metals from fly ash glass

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1728-7

Abstract:

● A higher sulfur content reduced the curing rate of Cr in glass.

Keywords： Dechlorinated fly ash SO₃ Heavy metal Chemical speciation Glass solidification

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Loss coefficient of nitrogenous non-point source pollution under various precipitation conditions

CHENG Hongguang, HAO Fanghua, REN Xiyan, YANG Shengtian, XIONG Wen, LEI Shaoping

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 2, Pages 230-235 doi: 10.1007/s11783-008-0043-7

Abstract: source (NPS) pollution models are performed based on Black River basin historical real-time runoff data, sedimentation

Keywords： information concept non-point historical real-time sedimentation

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New Trend of Forest Chemical Industry in China

Song Zhanqian

Strategic Study of CAE 2001, Volume 3, Issue 2, Pages 1-6

Abstract:

Forest chemical industry can produce various useful products by chemical processing of forest resourcesThe present conditiobns of the forest chemical industry in China was reviewed in this paper.

Keywords： forest chemical industry forest resource chemical processing

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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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Chemical transdifferentiation: closer to regenerative medicine

Aining Xu,Lin Cheng

Frontiers of Medicine 2016, Volume 10, Issue 2, Pages 152-165 doi: 10.1007/s11684-016-0445-z

Abstract: Particularly, we focus on the complete chemical compound-induced cell transdifferentiation, which isDespite these achievements, the mechanisms underpinning chemical transdifferentiation remain largely

Keywords： cell therapy cell transdifferentiation chemical compounds small molecules tissue regeneration

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Computational design of structured chemical products

Faheem Mushtaq, Xiang Zhang, Ka Y. Fung, Ka M. Ng

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 5, Pages 1033-1049 doi: 10.1007/s11705-020-2002-1

Abstract: In chemical product design, the aim is to formulate a product with desired performance.performance, ingredients, structure, and manufacturing process framework for the design of structured chemical

Keywords： product design performance ingredients structure manufacturing process framework structured chemical

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Hexachlorobutadiene emissions from typical chemical plants

Minxiang Wang, Lili Yang, Xiaoyun Liu, Zheng Wang, Guorui Liu, Minghui Zheng

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1352-8

Abstract: Abstract • Unintentional HCBD production in typical chemical plants was investigated. • The highestFew studies of HCBD formation during chemical production processes have been performed, so HCBD emissionsstudy, HCBD concentrations in raw materials, intermediate products, products, and bottom residues from chemicalThe concentrations in the bottom residue samples contributed 24%–99% of the total HCBD formed in the chemicalThe results indicate the concentrations of HCBD unintentionally produced in typical chemical plants and

Keywords： Hexachlorobutadiene Chemical plant Chlorobenzene Trichloroethylene Tetrachloroethylene

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Opportunities and challenges for a Golden Age of chemical engineering

Phillip R. WESTMORELAND

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 1, Pages 1-7 doi: 10.1007/s11705-014-1416-z

Abstract: Chemical engineering is entering a new Golden Age of practice, thought, and impact, accompanied by greatThat must be based on recognizing that the core of chemical engineering is applying molecular sciences

Keywords： hydrocarbons biotechnology computation cyberinfrastructure manufacturing environmental