Day 2 :
Chinese Academy Sciences, China
Time : 09:30-10:15
Yuran Li is mainly engaged in the joint/collaborative removal of the pollutants (SOx, NOx, dioxins, dust and so on) from coal-fired flue gas/industrial furnace flue gas, activated coke/carbon desulfurization and denitrification, study of pollutant emission characteristics and evaluation standard of control equipment. She has published SCI/EI papers more than 10 articles, participated in the preparation of one monograph and applied for seven patents.
For the flue gas from coal-fired power plants, the usual purification process is the limestone-gypsum wet flue gas desulfurization combined with the selective catalytic reduction (SCR) denitrification by NH3. Compared with the method of series connection of individual pollutant control, simultaneous removal of multi-pollutant is prospective due to its cost-effectiveness. Activated coke can be utilized in 130-150 oC as a catalyst in catalytic reduction of NOx by NH3, simultaneously adsorbing SO2 and removing multi-pollutants, such as SO3, dioxin and heavy metals. The desulfurization efficiency is usually higher than 90%, the denitrification efficiency ranges 30-50% in SCR reaction with NH3.The purpose of this study is to improve the desulfurization and denitrification performance on the activated coke through the modification and regeneration in various atmospheres and then to reveal which functional groups play a key role on SCR. We used a low rank commercial activated coke produced by Xinhua chemical plant in this work. The AC modified by H2O2 and NH3·H2O can increase the content of oxygen and nitrogen functional groups on the surface of it, then increase the absorption of SO2. The denitrification activity increased 1.5-2.6 times for the activated coke modified by H2SO4 than the fresh activated coke. The activated coke regenerated under NH3 atmosphere significantly improves the denitrification and desulfurization activities. The denitrification efficiency increased about 10-20% for AC modified by NH3·H2O or HNO3. After modification or regeneration of activated coke, the specific surface area, the pore size distribution, the total pore volume and the types of nitrogen and oxygen functional groups were changed compared with the fresh activated coke. There is a positive relationship between nitrogen or sulfur capacity of carbonyl oxygen of quinone groups, oxygen atoms in carboxyl groups, N-6 (pyridinic) and N-5 (pyrrolic and pyridonic) in the experiment of desulfurization and denitrification of activated coke.
Tongji University, China
Time : 10:15-11:00
Zuxin Xu has completed her PhD from Hohai University in 1988 and Postdoctoral studies from Tongji University in 1997. She was the Director of Shanghai Environmental Protection Bureau form 2003 to 2007 and Vice Chairman of Science and Technology Commission of Shanghai Municipal People’s Government from 2007 to 2016. She is currently the Counselor of Shanghai Municipal People’s Government. Her main research interests are integrated catchment management and rehabilitation, urban drainage pollution control, ecological wastewater treatment, hydrodynamics and water quality modeling. She has published more than 200 papers in peer-reviewed journals and international conferences. She has been serving as an Executive Editorial Board Member of Journal of Hydrodynamics. She is presently the EXECUTIVE MEMBER of Chinese Society for Environmental Sciences.
Nowadays, how to manage the urban water system is a most interesting topic worldwide, especially in the countries that are facing rapid urbanization where a great amount of money is being invested to improve river water quality and even eliminating river’s blackness and foul stench firstly. Based on our practices, factors leading to deterioration of river water quality or improper urban water system, may arise from un-intercepted wastewater discharge, urban drainage overflow due to inappropriate sewage entry into storm drains and low interception capacity on wet-weather days, abnormal low or high influent concentration of waste water treatment plant due to pipe defect associated groundwater infiltration or unexpected untreated industrial wastewater and rainwater entries into sewers, unfavorable river water flowing patterns. Hence, we presented a framework of urban water system and integrated approaches and practices to regulate the water system well. Specifically, we classify the urban water system into urban water drainage system, wastewater treatment plant and river water system. For the urban water drainage system, we emphasize the reduction of pollutant discharge reduction by on-site grey water extraction and reuse, low impact design oriented runoff control, sediment deposition associated high-concentration overflow pollution treatment using the sediment dredging and on-line treatment units and so on. For both urban drainage system and wastewater treatment plant system, we emphasize the detection of sewer or storm water pipe to find the pipe defects locations or inappropriate cross-connected entries using the tracer parameters and therefore correct the malfunctioned pipes. For the river water system, we emphasize the improvement of water flowing patterns by employing natural tidal water energy and artificial hydraulic structures control. We also presented how to depict the detailed components of each sub-system, which is a basis for developing optimized regulating model of urban water system.
Keynote: Pesticide usage in vegetable, rice and cotton cropping area and its impact on surface water in three rivers
Time : 11:15- 12:00
Tanu Jindal is a Professor and Director of Amity Institute of Environmental Science and also Amity Institute of Environmental Toxicology, Safety and Management and has 21 years of experience in Environmental Studies., Amity University, Uttar Pradesh, India. She has successfully completed projects from many prestigious funding agencies such as Ministry of Environment and Forest (MoEF), Ministry of Earth Sciences (MoES), Department of Science and Technology (DST). She has filed six patents on lysimetric-device, apparatus to estimate the loss of xenobiotics by volatilization and mineralization, natural pesticide, photochemical method to dispose of dilute pesticide waste, EMF radiation exposure system and cost effective water testing kit. Her recent initiatives are on environmental monitoring studies at Antarctica with NCAOR, Goa and GMO’s of climate change resistant variance. She is a Visiting Professor to Derby University, UK. Her expertise is ISO-17025, GLP-studies, radio and stable isotope tracer techniques, GC, HPLC, ICP, MS and tissues exposures etc.
Statement of the Problem: Crop wise, in India the consumption of pesticides are found highest in cotton i.e., around 37%, followed by paddy 20%, while the vegetable consumes about 9% pesticide residues. The high water requirement and the heavy pesticide load used in crops in India have resulted in contamination of associated surface water such as streams, ditches, rivers and lakes. Farmers often spray hazardous insecticides like organophosphates and organochlorine up to five to six times in one cropping season while only two applications may be sufficient. The usual practice of draining crop water into irrigation canals may cause river and lake contamination. Therefore a study was undertaken to analyze the contamination by pesticide in surface water samples flowing near the farms of vegetable, rice and cotton growing areas.
Methodology & Theoretical Orientation: Samples of rivers (Yamuna, Hindon and Ghaggar) were taken from nearby field crop surface, 2 km, 2 km bottom and 5 km.
Findings: Yamuna River samples were found 45% contaminated with organochlorine and 25% with organophosphorous pesticides. All the synthetic pyrethroids analyzed were found below MRL value. Hindon River samples were found contaminated with 52% by organochlorine pesticides, 25% by organophosphorous pesticides and 12.5% by synthetic pyrethroids. Surface water samples collected from river Ghaggar were found contaminated with 38.6% organochlorine pesticide, 50% by organophosphorous pesticide and 10.5% by synthetic pyrethroids residues which were above MRL value.
Conclusion & Significance: The results are alarming and show that either the use of banned pesticides (DDT and Endosulfan) is still continued or they are present in surface water samples as they are very persistent. There is an urgent need of proper extension services to educate farmers about the judicious use of new molecules of pesticides along with integrated pest management approach to avoid contamination of water resources.
- Environmental Sustainability and Development | Marine Pollution | Renewable energy | Trending Market in Pollution Control |
Location: Alfred Square Room
The University of Nottingham Ningbo, China
College of Menominee Nation, USA
Time : 12:00-12:30
Lisa B Bosman holds PhD in Industrial Engineering from the University of Wisconsin-Milwaukee. She is currently an Assistant Professor at the College of Menominee Nation, where she serves as the Director of the Solar Energy Research Institute. Her research interests include solar energy performance modeling, entrepreneurial minded learning and STEM education.
According to the U.S. Energy Information Administration (U.S. EIA), renewable energy consumption made up about 13% of the nation’s energy supply in 2013, of which only about 2% was contributed by solar energy. This contribution (by solar) is expected to increase to 20% by 2040. In 2010, the U.S. Department of Energy announced the SunShot Initiative, which aims to reduce the total installation cost of solar technologies by 75% between 2010 and 2020. This implies that solar energy is a top priority in the U.S. and many other countries. The purpose of this research is to design and implement a customer decision support system to determine the appropriate solar PV technology to install depending on the customer, technological and geographical location attributes. This research develops a solar decision support system that incorporates: Multiple comparison of six different commercially available PV solar technologies (e.g., crystalline, amorphous and thin film), a variety of system configurations (e.g., battery based PV systems), a variable monthly derate factor (e.g., snow only during winter), annual degradation by component (e.g., panels and inverter), module configurations (e.g., flat-plate, cylindrical panel), temperature coefficient modifications and albedo coefficient and inverter selection (e.g., microinverters). PVSysCo, which overcomes these deficiencies, is introduced as an alternative method to better estimate the performance and reliability of PV energy systems over time. Practically speaking, PVSysCo provides consumers with the ability to make educated choices for optimizing solar energy investment returns and it allows insurance underwriters and home appraisers the ability to accurately assess actual cash value of used PV systems. This model is conceptually similar to the Kelley Blue Book, which allows consumers to estimate the value of a used car. This “Solar Energy Blue Book”, a solar energy system evaluation tool, will allow consumers to estimate the value of a used solar energy system, taking into consideration many factors, such as latitude (which determines the quantity of incoming sunlight) and zip code (which determines the approximate cost of electricity). PVSysCo allows potential solar energy system consumers the opportunity to understand the return on investment for new and in particular, used solar energy systems.
University of Sri Jayewardenepura, Sri Lanka
L F D Z Gunathilaka was employed in the private sector organization as a Manager Research and Development at Latex Green, who manufactures mattresses, pillows and other bedding products to the export market, factory located in a dedicated export processing zone. Presently she is working with calculations of product water foot print for latex products and pursuing PhD in Management at University of Sri Jayawardenepura, Sri Lanka.
Manufacturing has a role to play in both climate change mitigation and adaptation. Mitigation focuses on limiting the speed and scale of transition, making allowances for carbon economy change and exploitation opportunities to alter the financial viability, the capital stock and the business models. It has typically received utmost attention in policy circles, such as debates, over carbon pricing as a mechanism to reduce greenhouse gas (GHG) emissions across the economy. The purpose of this study is to examine the question of long term financial feasibility risk of transition of climate change to a low carbon future as an implication for stakeholders. The main objective of the study is on the risk associated with mitigation of climate change labeled as carbon risk and the associate long-term financial feasibility that may impact on the performance of assets and business portfolios at different stages to establish carbon management strategies effectively. This case study revealed that the commitments to maintain carbon neutrality in the upcoming application periods (year 2015-2021) by implementing the plan and achieving 7.24% of carbon reduction to its footprint against the base year (2015). Company will continuously maintain its carbon neutrality during 2016-2021 periods by offsetting 93% of carbon footprint calculated in each year after achieving 7.24% of emission reduction target through 321909 (Kilogram Carbon dioxide equivalent) kgCO2e emission reduction from the total emission. Impact of climate transition risk of loan-team financial feasibility is needed to reconcile businesses needs with concern to the environment to achieve prosperity in future. Recommendations are made to achieve low carbon economy while effectuating business performance in the long run.
National Sun Yat-sen University, Taiwan
Time : 14:00-14:30
Statement of the Problem: Organisms which ingest micro-plastics may not only experience physical harm, such as internal abrasion and blockage but are also exposed to chemical additives in plastics. These include persistent, bioaccumulating and toxic chemicals which adsorb and accumulate on plastic from the water column. Comprehending the surface change of micro-plastics eroded in the natural environment could enlarge our knowledge of the interaction of pollutant and plastic marine debris. The extent and rate of trace metal and hydrophobic organic chemical (HOCs) (de)sorption are influenced by the surface properties of sorbents, such as eroded polyvinyl chloride (PVC) in the coastal environment. These surface properties could explain the interactions among plastics, microbes and pollutants. The primary objective of this research is to understand the surface properties such as altered surface functional groups and surface topography of aged PVC pellets under heat, UV and solar in seawater.
Methodology & Theoretical Orientation: Knowledge of polymer morphology is essential for understanding the processes and mechanisms of degradation. The morphology of eroded PVC was examined using Environmental Scanning Electron Microscope (SEM), equipped with Spectrometers Energy Dispersion X-ray (EDS). FTIR was used to identify functional groups on the PVC surface after environmental erosion.
Findings: The surface of virgin PVC seems smooth and uniform, but the eroded one is rough and uneven from electron photomicrographs of the surface topography. Thermal degradation of PVC increases peaks at 1595 cm−1 which implies the formation of C=C and 1735 cm−1 as ester carbonyl bonds (–COO–). On the other hand, UV degradation of PVC increases peaks at 1735 cm−1 which is ester carbonyl (–COO–) and 2500-3500 cm−1 which is carboxylic acid (–COOH). However, the FTIR spectra for eroded PVC via solar with seawater is similar to the virgin one.
Conclusion & Significance: Thermal and UV degradation presented different PVC morphologies such as surface area, pore size, pore volume and pattern. In addition, the increased functional group went through a dehydrochlorination mechanism during the aging process and transformed the chemical properties of PVC. Whether the PVC eroded by solar in seawater or not, this uneven surface seems to originate from the skin of virgin PVC degraded but no new functional group was found. It suggests that chemical properties of PVC seem durable for a long time in the environment.
Hindustan University, India
Time : 14:30-15:00
Dr.V.Preethi is an Associate Professor in Hindustan University, Chennai, India. She received her Ph.D. degree in Environmental Engineering from the Anna University, Chennai. She completed her MS in Environmental Technology from Autonomous University of Barcelona (UAB), Spain. She is the author for 7 publications in peer-reviewed journals with high impact and more than 25 oral communications in international conferences and symposium. She is also the author of 2 patents. In 2015 she was awarded the Young Scientist Award for Hydrogen Energy and Advanced Materials (HEAM) by National Institute of Technology, Bhopal and Indian Association of Hydrogen Energy and Advanced Materials. Apart from that she also received 4 other awards for her innovative research findings. She has worked as a researcher for two years in Indian Institute of Technology, Madras, UAB, Spain. Also she has five years of teaching experience and totally 11 years of experience in both research and academics. She organized and conducted an International Conference on Sustainable Environment and Energy (ICSEE 2017) funded by DST, Government of India. She is the principal Investigator for a project titled ‘Recovery of Hydrogen from Industrial Waste Streams’ funded by DST, Government of India.
Hydrogen is a clean fuel and an efficient energy carrier. Photocatalytic hydrogen production from cheap raw materials like water and industrial waste hydrogen sulfide provides an economical, environmentally friendly solution for future. To ensure efficient conversion of incident solar light photons to charge carriers, appropriate design of a solar photocatalytic reactor is most important. This review focuses on various configurations of photocatalytic reactors used for hydrogen recovery from both water and hydrogen sulfide (both liquid and gas-phase). From the literature review, it was observed that the rate of reaction was much influenced by the reactor configuration adopted. Based on the observations, very few studies were focused for development of solar photo-reactor for the generation of H2. Hence the effective solar photocatalytic generation of H2 from H2S by developing a suitable photo-reactor is essential for large-scale hydrogen recovery.
University of Chinese Academy of Sciences, China
Title: The formation and migration of sulfur trioxide over V2O5/TiO2 catalyst in SCR of NOx with NH3
Time : 15:00-15:30
Jin Xiong is currently pursuing his PhD in Environmental Engineering from University of Chinese Academy of Sciences, Beijing, China. He has completed his Bachelor’s degree in Chemical Engineering and Technology from the Central South University, Changsha, China. His research interest is on SO3 formation mechanism and migration route during SCR DeNOx process and SO3 emissions collaboratively controlling.
The oxidation of sulfur dioxide (SO2) to sulfur trioxide (SO3) is undesirable during the selective catalytic reduction (SCR) of nitrogen oxides (NOx) found in the flue gas of power plants. Sulfur trioxide has toxicity over 10 times than that of SO2 and is highly corrosive, resulting in corrosion of equipment and pollution of the environment. The objectives of this research are to establish the fundamental kinetics and mechanism of SO2 oxidation over supported V2O5/TiO2 catalyst and establish sulfur balance, then, use these insights to propose a basic theory for collaboratively controlling SO3 emissions. A series of supported V2O5/TiO2 catalysts were prepared with various V2O5 contents: 0.5%, 1%, 1.5%, 3%, 4% and 5%. Raman spectroscopy is used to determine the coordination of surface species. Isolated vanadia species were dispersed on the TiO2 surface as Ti-O-V bonds at VOx coverage below the monolayer. Sulfur dioxide temperature-programmed desorption and in situ diffuse reflectance infrared Fourier transform spectroscopy were conducted to study the interaction between SO2 and V2O5/TiO2. It was found that Ti-O-V was demonstrated to play a critical role in the SO2 adsorption and oxidation. A possible reaction mechanism of SO2 oxidation over V2O5/TiO2 catalyst was established in this study. The turnover frequency for SO2 oxidation was very low, approximately 10-5 s-1 at 320 oC. Over the range of conditions studied, the rate of SO2 oxidation is zero-order in oxygen and first-order in SO2 and the apparent activation energies for SO2 oxidation was obtained. The decrease of SO2, the gaseous SO3 and the sulfate deposited on catalyst surface were to be quantified by Fourier transform infrared spectrometer (FTIR), PENTOL SO3 analyzer and ion chromatography (IC), respectively. Then, the sulfur balance was established.
Environmental Sciences Universitas Indonesia, Indonesia
Time : 15:45-16:15
Mesi Shinta Dewi is an Urban Environmental Engineer, working for Local Government of Tangerang Municipality since 2003. She is currently pursuing PhD in Environmental Sciences at Universitas Indonesia. She has obtained her Bachelor’s degree from Bandung Institute of Technology as an Environmental Engineer in 1998 and in September 2007 she got scholarship from National Development Planning Agency to take Master’s program in Regional and Urban Planning, Bandung Institute of Technology and graduated in April 2009.
Indonesia started to implement the concept of green building but it should be underlined that it is different with some developed countries which already targeting a single house as important object in green building concept implementation, Indonesia has not specifically targeting housing sector in green building concept implementation while in fact land cover of metropolitan cities in Indonesia were dominated by single homes. This study aims to find out whether of urban communities in Indonesia ready in adopting green building concept especially during operational phase of building. Operational phase of a building is the longest period where consumption patterns of its inhabitants become the key to achieve the objective of green building concept. Survey of 96 respondents was conducted to examine behavior and consumption patterns. Descriptive statistical analysis was conducted to determine propensity to consume. Statistical analysis was used as dynamic model basis to determine the sustainability of cities related to socio-economic conditions of inhabitants. GIS analysis in Tangerang City which is considered to represent the characteristics of metropolitan cities in Indonesia, shows that land cover was dominated by the housing area up to 51.7% while industrial areas only reached 24.09% and commercial areas only 15.37%. Results of analysis showed that level of education have a considerable influence on the awareness that is the higher the education level. The results then used as basis to build dynamic model to predict carbon footprint emitted. Mostly level of education population are high school and it would turn out to be significant problems, since statistical analysis show that people with education minimum bachelor’s degree would have sustainable consumption pattern. Carbon footprint analysis with dynamic system shows that annual carbon footprint per capita will continue to increase due to the absence of changes in the consumption patterns of residential activity.
Xiamen University, China
Time : 16:15-16:45
Presley K Wesseh is passionate about energy economics and believes that economists should take the lead in critical energy solutions. His research develops and applies econometric models, computable general equilibrium models, real options valuation models and optimization methods in order to study and explain the paradigm of electricity markets and renewable energy resources, the energy-economy-environment system and climate change, as well as the evolution and dynamics of fossil-fuels price volatility and hedging strategies. A couple of his findings have been published in reputable academic journals such as Energy Economics, Energy Policy, Energy, Applied Energy, Journal of Cleaner Production, Renewable and Sustainable Energy Reviews, etc.
The production and utilization of energy constitutes a significant share of global environmental costs and damages. However, considering the importance of energy for growth and development, the need for a sustainable energy transition cannot be overemphasized and this is further exacerbated by growing concerns about climate change and few cases of nuclear accidents. The purpose of this study is to quantify the impacts of a potential transition towards renewable electricity and estimate the investment requirement for achieving a low-carbon electricity generation mix. The framework developed in this study to assess the optimal technology combination is built using MESSAGE, a bottom-up energy supply optimization model. The results point to wind and solar as the most promising technologies and provide insights that a carbon tax implemented in isolation is not a cost-effective strategy for mitigation.