5^th International Conference on Pollution Control & Sustainable Environment March 14-16, 2019 | SHERATON HEATHROW HOTEL, LONDON, UK

Pakpong Sriprasert is lecturer of Environmental Technology, Faculty of Environment andrnResource Studies at Mahasarakham University, Maha Sarakham, Thailand. Her researchrncurrently focus on pollution control and environmental sustainability, especially, the processrnof water pollution and treatment of both domestic and industrial wastewater. She specializesrnin wastewater treatment technologies including chemical and biological processes. She hasrnbuilt valuable results after years of experience in these researches. Sriprasert completed BEngrnin Environmental Engineering from King Mongkut’s University of Technology Thonburi,rnThailand. She has also completed her MEng in the same field at Chulalongkorn University,rnThailand. Currently, she is doing PhD at the University of Southampton, UK, she works onrnapplication of two- and three- phase flow for anaerobic membrane cleaning.

Heavy metals pollutants from various types of industrial effluents such as metal plating,rntanneries, batteries, mining and electronic parts facilities, etc., become seriouslyrnenvironmental problems nowadays. Chemical precipitation, particularly, using hydroxidernprecipitation technique is the most widely implementation for soluble heavy metals removalrnfrom industrial wastewater due to its relatively inexpensive and simple application. Sulfidernprecipitation is also concerned one of the most effective method to treat heavy metal ionsrnregarding to its non-amphoteric sludge characteristics. In addition, metal sulfide sludge hasrnshown better thickening and dewatering properties in comparison with metal hydroxidernsludge.rnIn this study, real complex rising wastewater from printed circuit board manufacturingrnindustry with initial pH of 8.1, 350 mg/L suspended solids (SS), 221 NTU turbidity, heavyrnmetals in term of total and dissolved Cu and Ni of 86.6, 41.3 and 12.4, 4.3 mg/L,rnrespectively, have been tested with 0 – 5 folds Na2S of stoichiometry (considering to Curnremoval) to evaluate Cu and Ni removal efficiencies. Thereafter, sulfide precipitatedrnwastewater was further treated by cationic and anionic polyelectrolytes under dosing rates ofrn0.25 – 5.0 mg/L in order to evaluate sludge settling ability.rnThe results showed that optimum dosage of Na2S was 1.5 times of stoichiometry for copperrnremoval with 5 minutes of reaction time. In this stage, it found that Cu and Ni concentrationsrnand turbidity have been reduced for 98.1 and 98.6 and 99.9 %, respectively. Optimumrndosages of cationic and anionic polyelectrolytes were found to be the same value at 4 mg/L,rncorresponding to total Cu removal of 99.1 and 99.2 %, Ni removal of 91.1 and 89.5 % forrncationic and anionic polyelectrolytes application, respectively. Removing SS values inrnsupernatant after cationic and anionic polyelectrolytes adding were 28 and 16 mg/L, referringrnto SV30 of 60 and 65 mL/L, which sludge setting velocities have been improved to 11 andrn13-folds, respectively. Precipitated sludge characteristics obtained from XRD presentedrnamorphous form with recovered Cu and Ni in dried sludge of 11.6 – 12.3 % and 0.006 –rn0.007 % (w/w) for cationic and anionic polyelectrolytes applying, respectively.

Mamdouh I Nassar has completed his Bachelor’s degree from Biology Department, Faculty of\r\nScience, Cairo University; MSc degree at the same University and PhD degree in Channel System at University of Maryland College Park (USA) and Cairo University. He did many\r\nstudies in the field of sleeping sickness and Malaria diseases of vectors Stomoxys calcitrans and\r\nAnopheles in USDA Florida, Jazan and Jeda. He is the Staff Member at University of Maryland\r\nCollege Park, USA. He is a Professor of Biological Sciences at Cairo University, King Abd-\r\nAlziz, Univ. Jazan, and King Khalid Universities. He has worked as laboratory staff, for dietary Microbiology at Environmental system service, Beltsville, USA. He also was a Consultant Advisor at Home Care Company and Al-Nasr Chemicals Company.

Recent growth in nanomaterials application in different science fields needs to understand the advancement of the base for engineering and create unique properties targeted towards specific applications. Historically, various fields such as biology, medicine, environmental science, and agriculture have employed the successful and safe use of nanomaterials. However, use in agriculture, especially for pest control and plant protection with nanoparticle materials is an under-explored area in the research community. Preliminary studies show that the potential of nanomaterials in improving pest control, plant protection, pathogen detection, chemical hazardous and residual effects of pesticides. This review summarizes nanomaterials application in good future agricultural assessment; helps to develop safety methods for pesticides through very careful egulation with minimal impact on human health and the environment. Wellmaintained equipment with precautions that are required of pesticide application that could minimize human health exposure to pesticides and their adverse effects on the environment are also discussed.

Maria Bartolomeu is PhD student at the Department of Biology, University of Aveiro, Portugal, where she received her M.Sc. degree. Her research work has been dedicated to Photobiology, specifically to microbial photobiology therapy and photodegradation of chemical compounds, with four publications in indexed journals.

Approximately 70% of the terrestrial area is covered with water, but only a small water fraction is compatible with terrestrial life forms. Due to the increment in human consumption (Fig 1), the need for water resources is increasing, and it is estimated that more than 40% of the population worldwide will face water stress/scarcity within the next few decades. Water recycling and reuse may offer the opportunity to expand water resources. For that, the wastewater treatment paradigm should be changed and adequately treated wastewater should be seen as a valuable resource instead of a waste product.rnThe exact composition and elements concentration of wastewater vary according to its different origin sources, such as industrial, agricultural, urban usage of water, etc. (Fig 1). Thus, a variety of known and emerging pollutants like heavy metals, antibiotics, pesticides, phthalates, polyaromatic hydrocarbons, halogenated compounds and endocrine disruptors have been found in natural water reservoirs and it might also be due to the limited effectiveness of conventional wastewater treatment. The conventional approaches consist of a combination of physical, chemical and biological processes, aiming the removal of large sediments such as heavier solids, scum and grease and of organic content to avoid the growth of microorganisms and eutrophication of the receiving water bodies. However, this approach does not seem enough to reduce the chemical pollutants and much less the emerging chemical pollutants.rnIn this work, after some considerations concerning chemical pollutants and the problematic efficiency of their removal by conventional methods, an update is presented on the successes and challenges of novel approaches for wastewater remediation based on advanced oxidation processes. An insight into wastewater remediation involving the photodynamic approach mediated by tetrapyrrolic derivatives is underlined.rnAmong the advanced oxidation processes, heterogeneous photocatalysis has proven its efficiency to degrade recalcitrant organic compounds. The great hope in this technology lies in its ability for water decontamination and, in addition, the killing of pathogenic microorganisms. In addition to this potential, there is the possibility of immobilization of the photocatalyst on solid matrices and thus to be easily removed, recovered, and reused, making it an effective, less expensive and even environmentally friendly technology. Additionally, solar-driven processes can be considered as a green technology once they can employ sunlight as the irradiation source, thus circumventing the use of very high energy consuming UV-lamps.rnAfter our analysis and with the data at hand, we think that photodynamic wastewater treatment may be worth drawing the attention from the scientific community and of political decision-makers. This approach has the potential to become a very robust solution to overcome the increasing need for water and wastewater treatment. We expect that the information compiled in this review can motivate the research community to put in more efforts in photodynamic wastewater treatment in order to gain progressive recognition.

Ewelina M Marek-Andrzejewska, PhD is Assistant Professor at the Poznań University of Life Sciences (Faculty of Economics and Social Sciences) in Poland. She carries out research in the field of behavioural economics and social innovation in the context of environmental protection and food markets. She is particularly interested in the application of the above scientific fields to the development of public policy. She is an author of high-quality scientific articles, reports for policy-makers and a reviewer for \"Sustainable Cities and Society\" (Elsevier Publishing). She earned her PhD title from the University of Lyon, at the Transport Economics Laboratory that belongs to the French Centre for Scientific Research (CNRS, corresponding to the Polish PAN). Prior to that, she focused on consumer policy for the OECD and the European Commission. Interests: food waste, behavioural economics, consumer behaviour, decision-making, social sciences, sustainable development, transportation consumer policy, UX design.

Statement of the Problem: Consumers are responsible for about 40% of food waste in Europe, wasting about 88 million tons of food annually. Poland is in the top-5 of the most profligate countries in the EU. Therefore, there is a need to conduct research in this field in Poland and reveal the main factors influencing consumer’s intention to waste food.rnrnFindings: The presented results are built on the findings of a recent online survey, conducted online via the Survey Monkey tool from the 15th of June to the 31st of October 2018. Among 563 respondents in Poland, 414 filled out the survey completely and only those responses were considered for further analysis in STATA, using the confirmatory factor analysis (CFA) based on structural equation modeling and co-variances between latent variables. The CFA was estimated on the basis of the maximum likelihood method. The entire model had a good fit according to the root mean square error of approximation (RMSEA) equal to 0,054. According to Figure 1, the most essential latent variable influencing “Intention to not waste food” is “Personal attitude” (0,48, p<0,001), meaning that personal believes regarding food waste play an essential role in building the behavioural intention in Poland. In addition, “Financial attitude” and “Perceived behavioural control” are also correlated with “Intention to not waste food”. On the one hand, “Financial attitude”, encompassing perception of a linkage between wasting of food and wasting of money, was positively correlated with “Intention to not waste food” at p<0.05. On the other hand, “Perceived behavioural control” was negatively correlated with “Intention to not waste food” at p<0.001. The latter result reveals that respondents stated having difficulties in avoiding food waste, even though they expressed positive “Intention to not waste food”.