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| 1 | Polytitanium sulfate(PTS):Coagulation application and Ti species detection显示文摘Interest in the development of inorganic polymerized coagulants is growing; however, there are only limited studies on the synthesis of polytitanium coagulants, which are expected to exhibit improved coagulation efficiency with better floc properties. This study presents the synthesis of polytitanium sulfate(PTS) for potential application in water purification,followed by characterization of PTS flocs and titanium species detection. Stable PTS solutions were successfully synthesized and standard jar tests were conducted to evaluate their coagulation efficiency. Electrospray ionization time-of-flight mass spectrometry(ESI-TOF-MS) speciation analysis revealed that a variety of mononuclear and polynuclear complexes were formed in PTS solution, indicating the polymeric nature of the synthesized coagulant. Floc characteristics were studied through on-line monitoring of floc size using a laser diffraction particle size analyzer. Results showed that PTS had a comparable or in some cases even higher organic matter and particulate removal efficiency than Ti(SO_4)_2.The effluent p H after PTS coagulation significantly improved toward desirable values closer to neutral p H. Properties of flocs formed by PTS were significantly improved in terms of floc size, growth rate and structure. This study showed that PTS could be an efficient and promising coagulant for water purification, with the additional benefit that its coagulated sludge can be used to recover valuable TiO_2 nanoparticles for various commercial applications. | Yanxia Zhao Sherub Phuntsho Baoyu Gao Hokyong Shon | 2017 | Journal of Environmental Sciences2017，29，2： | 4 |
| 2 | Blended Fertilizers as Draw Solutions for Fertilizer-Drawn Forward Osmosis Desalination显示文摘 | Sherub Phuntsho HoKyong Shon etc | 2012 | Environmental Science and Technology2012，3，： | 1 |
| 3 | A novel low energy fertilizer driven forward osmosis desalination for direct fertigation: Evaluating the performance of fertilizer draw solutions显示文摘 | Sherub Phuntsho Ho Kyong Shon Seungkwan Hong Sangyoup Lee Saravanamuthu Vigneswaran | 2011 | Journal of Membrane Science 3752011，，： | 1 |
| 4 | Influence of temperature and temperature difference in the performance of forward osmosis desalination process显示文摘 | Sherub Phuntsho Saravanamuthu Vigneswaran Jaya Kandasamy Seungkwan Hong Sangyoup Lee Ho Kyong Shon | 2012 | Journal of Membrane Science2012，，： | 1 |
| 5 | A review of draw solutes in forward osmosis process and their use in modern applications显示文摘 | Laura Chekli Sherub Phuntsho Ho Kyong Shon Saravanamuthu Vigneswaran Jaya Kandasamy Amit Chanan | 2012 | Desalination and Water Treatment . 2012 (1-3)2012，，1： | 1 |
| 6 | A novel low energy fertilizer driven forward osmosis desalination for direct fertigation: Evaluating the performance of fertilizer draw solutions显示文摘 | Sherub Phuntsho Ho Kyong Shon Seungkwan Hong Sangyoup Lee Saravanamuthu Vigneswaran | 2011 | Journal of Membrane Science2011，，1： | 1 |
| 7 | Membrane scaling and flux decline during fertiliser-drawn forward osmosis desalination of brackish groundwater显示文摘 | Sherub Phuntsho Fezeh Lotfi Seungkwan Hong | 2014 | Water Research2014，48，10： | 1 |
| 8 | Surface water treatment benefits from the presence of algae:Influence of algae on the coagulation behavior of polytitanium chloride显示文摘Titanium-based coagulation has proved to be effective for algae-laden micro-polluted water purification processes.However,the influence of algae inclusion in surface water treatment by titanium coagulation is barely reported.This study reports the influence of both Microcystis aeruginosa and Microcystis wesenbergii in surface water during polytitanium coagulation.Jar tests were performed to evaluate coagulation performance using both algae-free(controlled)and algae-laden water samples,and floc properties were studied using a laser diffraction particle size analyzer for online monitoring.Results show that polytitanium coagulation can be highly effective in algae separation,removing up to 98%from surface water.Additionally,the presence of algae enhanced organic matter removal by up to 30%compared to controlled water containing only organic matter.Polytitanium coagulation achieved significant removal of fluorescent organic materials and organic matter with a wide range of molecular weight distribution(693–4945 Da)even in the presence of algae species in surface water.The presence of algae cells and/or algal organic matter is likely to function as an additional coagulant or flocculation aid,assisting polytitanium coagulation through adsorption and bridging effects.Although the dominant coagulation mechanisms with polytitanium coagulant were influenced by the coagulant dosage and initial solution pH,algae species in surface water could enhance the charge neutralization capability of the polytitanium coagulant.Algae-rich flocs were also more prone to breakage with strength factors approximately 10%lower than those of algae-free flocs.Loose structure of the flocs will require careful handling of the flocs during coagulation-sedimentation-filtration processes. | Yanxia Zhao Huiqing Lian Chang Tian Haibo Li Weiying Xu Sherub Phuntsho Kaimin Shih | 2021 | Frontiers of Environmental Science & Engineering2021，15，4： | 0 |
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