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PROFESSIONAL EVENT SPEAKERS


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Prof Dr Sadhan K Ghosh

Professor & Ex- Head at Jadavpur University, Mechanical Engineering Department

Title: E-waste Management and EPR

Abstract:

E-waste management is one of the most vulnerable sectors of waste management. E-waste management sector is the most attractive sector of business but in most of the countries the focus has not been given seriously which results in environmental pollution and health hazards. The main problem in e-waste management is the supply chain sustainability with respect to tracking, collection and treatment. In many of the countries e-waste rules are absent whereas there are a few countries where e-waste management rules are quite matured and sustainable. One of the proved solution formulation and implementation of effective EPR policies.  Country like India and China has introduced EPR which has its own issues and challenges.

The speaker has been carrying out research on e-waste management for a couple of years covering BRICS nations and other countries in the west. The speaker will describe how the e-waste management system is working in different countries and the implementation of EPR.

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Shreelaxmi Prashant

Assistant Professor (Sr Scale) Dept. of Civil Engg., MIT Manipal

Achieving sustainability in concrete construction using industrial wastes, plastic aggregates, e-wastes and C&D wastes

Abstract:

Cement has been used as a binder, but because of recent concerns about the environment degradation and the need for effective utilisation of available natural resources has necessitated the use of alternative binders. Cement industry causes environmental pollution by emitting CO2, a major contributor to the carbon foot print. This has made the researchers work towards the development of new generation binders, that are eco-friendly and also cater the need of special concrete such as High strength concrete, self-compacting concrete. Alkali activated binders are the one in which a siliceous and aluminous material is reacted or activated with an alkali source. The reaction produces a solid, having similar structure and characteristics as Portland cement. Many of industrial wastes such as Flyash, Slag,  metakaolin, Rice husk Ash exhibit siliceous and aluminous characteristics. The strength of the alkali activated binders depends on the concentration of the alkaline solution, the ratio of the alkali activators and the binder and the type of curing In the present study various combinations of Flyash and slag based binders are studied.

Availability of natural aggregate like sand, gravel,etc. is another rising concern. Most of the natural aggregate is obtained through dredging of river beds and mining which disturbs the ecological balance. So, there is a need to find alternative sources of aggregates in concrete. E- Waste refers to the discarded electronic and electrical items which are usually dumped in landfills. Increasing amount of E- waste has led to a rise in environmental problems. Heavy metals and toxic chemicals leach from the E- waste and contaminate the soil and groundwater. Contact of animals or plants with such contaminated resources can lead to potentially fatal results. Therefore, E- waste is being considered as one of the possible alternatives to natural aggregate in concrete and studies are being carried out to determine the feasibility of using E- waste in concrete. The concrete containing partial replacement of plastic aggregate meet the several strength criteria for normal structural as well as lightweight concrete. Several techniques are adopted to improve the plastic to be used as an aggregate in concrete preparation including binding between the plastic aggregate and cement paste. However the ductility properties of the concrete are found to be enhanced.

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DR. N. ENOMA

Edo State Polytechnic, Department of Mineral and Petroleum Resources Engineering, Usen, Edo State, Nigeria

ELECTRICAL RESISTIVITY TOMOGRAPHY (ERT) INVESTIGATION OF LITHOLOGICAL AND COMPATIBILITY STRUCTURE FOR SUSTAINABLE BUILDINGS AT USEN, SOUTHERN NIGERIA

Abstract:

Electrical Resistivity Tomography (ERT) investigation was carried out at different locations in Usen, Southwestern area of Edo State, Nigeria. This was done with a view to study the lithological and compatibility structure of the subsurface for sustainable buildings that can stand the test of time. The locations were at Edo State Polytechnic field environments, Elawure grammer school area, The quarry site environment and Edo state polytechnic Science Laboratory Technology environment. all located within longitudes  60 44’, 6 0 45’ East and latitude  50 20’, 50 22’  North.  ABEM terrameter SAS 1000 resistivity instrument and its accessories were used for the geophysical ERT survey.

A series of 2D apparent resistivity data were acquired in parallel directions on the survey locations using wenner schlumberger electrode configuration with electrode separation of a = 5m and inter spacing of L=10m making a total of 60m grid for the lateral extent. The 2D data sets were inverted separately using RES2DINV software producing 2D models for each line. The lithology and aggregate that fall within the resistivity range (17.8Ωm to 46938Ωm) observed from the models are, lateritic soil, sand clay, clay sand,  granite, clay, shale, limonite, quartz, rock salt, lignite, syenite, basalt, schists, marble, conglomerates, sandstone and sand.

This research reveals that the lithology of the study locations contain lateritic soil, sand, sandstone, shale, granite and clay. Finally showing that the lithological structures are well compacted, resulting in soil structure that can attract sustainable buildings having the ability to withstand the test of time and develop into sustainable towns and cities within the survey locations.

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Mohammad Abousaeidi

Professor at Islamic Azad University of Kerman- Kerman Branch

Title: Geographic Information System Modeling Approach to Determine the Most Efficient Delivery Routes for Fresh Product

This study involves the adoption of the Geographic Information System (GIS) modelling approach to determine the quickest routes for fresh vegetable delivery. During transport, fresh vegetables mainly deteriorate on account of temperature and delivery time. Nonetheless, little attention has been directed to transportation issues in most areas within Kuala Lumpur. In addition, perishable food normally has a short shelf life, thus timely delivery significantly affects delivery costs. Therefore, selecting efficient routes would consequently reduce the total transportation costs. This study includes a review of the main factors that lead to the deterioration of fresh vegetables in tropical countries such as Malaysia. The regression model applied in this study to determine the parameters that affect route selection with respect to the fastest delivery of fresh vegetables is also presented. With the goal of realizing the shortest time for delivery route planning, impedance functions will be integrated by taking into account the parameters emphasized in this study. For the purpose of this research, ArcGIS software was adopted to solve the problem of complex networks. The final output is a map of optimal routes with the best drive times based on variables derived from the regression analysis.

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IO Oyo-Ita

Environmental/Petroleum Geochemistry Research Group, Department of Pure and Applied Chemistry, University of Calabar, Calabar-Nigeria

Aliphatic hydrocarbons in recent dated sediment cores of Imo River, SE Nigeria: Environmental/historical implications.

Abstract:

Four sediment cores (0-30 cm long) from Afam (AF), Mangrove (MG), Estuary (ES) and illegal Petroleum refinery (PT) sites of Imo River, Southeast Nigeria were analyzed by Gas Chromatography-Mass Spectrometry (GC-MS) to characterize the sources of or-ganic matter (OM), examine their deposi-tional history and assess human-induced changes in the last ca. 5 decades using bi-omarker and 210Pb/137Cs radiometric ap-proach. Evaluation of carbon preference in-dices (CPIs, 2.01 - 2.19), carbon number maxima (Cmax, 29, 31) and atomic C/N (16.51-31.32) for the top layers (0-5 cm) re-vealed greater wash-in of land-derived OM, attributable to the 2012 flood episode. The bottom layer (PT1, 25-30 cm,) of PT depos-ited ca. 1964-1972 exhibited CPI of 0.97 and pristane/phytane (Pr/Ph, 3.75), suggest-ing illegal oil refinery had begun in the re-gion ca. 8 years after the first commercial discovery of oil in Nigeria in 1956. The oc-currence in high abundance of heptadecane in the middle layer (ES4, 10-15 cm) of ES corresponded with the period of eutrophica-tion that blocked the waterway in the late 1980s. Measurement of a marked unre-solved complex mixture in the near-top layer (AF5, 5-10 cm) of the AF indicated that the heaviest contamination by petroleum hydro-carbons occurred at ca. 1997-2005.

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Muhammad Tayab

Abu Dhabi National Oil Company, UAE

Aliphatic hydrocarbons in recent dated sediment cores of Imo River, SE Nigeria: Environmental/historical implications.

Abstract:

Drilling is by its nature a very dynamic activity and it has undergone tremendous change over the last 10 years in terms of extent and scope of drilling activities and overall HSE performance. In UAE, strategic objectives are to manage operations in a manner that assures the health and safety of employees & contractors, and to minimize the impact on the environment.  Managing environmental impacts associated with drilling is a challenge to oil & gas companies and in recent year more efforts are exerted in increasing production levels hence increasing drilling activities and associated environmental concerns.

Key environmental issues associated with onshore drilling activities include release to the atmosphere & groundwater and generation of hazardous wastes. Over the last few years, UAE has intensified its drilling activities to meet challenging production targets and over the last 10 years number of drilled wells has almost doubled. In order to minimize environmental impacts of drilling activities addressing environmental issues became central to work planning and regarded as a business objective. The majority of drilling wastes includes drilling fluids & cuttings and if these are not managed effectively they may result into soil & groundwater contamination and could harm to biota.

In order to minimize the environmental impact of drilling waste an integrated waste management scheme was developed to implement Zero Discharge and 100% HSE concepts from drilling locations and this scheme includes:

·         Two waste disposal wells for Water Based Mud (WBM) for injection in the deeper aquifers.

·         Reconditioning of  Oil Based Mud (OBM) at reconditioning plant for reuse

·         Thermal Desorption Unit (TDU) for treating OBM Cuttings

In 2017, approximately a Million feet of wells were drilled resulting in generation of 200,000 tons of WBM cuttings and 40000 tons of OBM cuttings. OBM Cuttings were treated at TDU and 12000 bbls of oil was recovered. In addition, approximately 100 K bbl. of waste WBM and other drilling fluids were injected in deeper formation. 99.9% of oil from OBM cuttings is reclaimed as a fuel and the final inert material used for manufacturing cement blocks. The outcome the solution is converting drilling hazardous wastes through 100 % recycling into environmentally friendly and beneficially-used products. The concept of 3Rs- Reduce, reuse& recycle is applied for managing drilling waste to protect the environment.

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