Bioremediation of Heavy Metal Contaminated Soils Originated from Iron Ore Mine by Bio-augmentation with Native Cyanobacteria

Z. Biglari Quchan Atigh; A. Heidari; A. Sepehr; M. Bahreini; K. R. Mahbub

Volume 11, Issue 2 , June 2020, Pages 89-96

  The soil in the Sangan iron-mining region in the east of Iran is contaminated with a high concentration of heavy metals, especially iron. The release of these pollutants into environment results in the transfer and accumulation of iron through the food chains, hence a reasonable solution is required ...  Read More

Design and Simulation of Air-Solar Preheating Unit: An Improved Design of a Flat Plate Solar Collector

S. N. Nnamchi; O. A. Nnamchi; E. O. Sangotayo; S. A. Ismael; O. K. Nkurunziza; V. Gabriel

Volume 11, Issue 2 , June 2020, Pages 97-108

  The design of a flat-plate solar collector (FPSC) is accomplished by multiple input multiple output (MIMO) design technique. The design variables (absorber, fluid and glass temperatures; length, width, height of the FPSC) were the unknown variables in the commensurate thermal balance equations based ...  Read More

Energy and Exergy Assessment and Heat Recovery on Rotary Kiln of Cement Plant for Cooling Effect Production by Using Vapor Absorption Refrigeration System

B. G. Emyat

Volume 11, Issue 2 , June 2020, Pages 109-115

  The main aim of this study is to use waste heat for cooling effect production from cement rotary kiln shell by applying vapor absorption refrigeration system. The plant has performance to manufacture 2000 tons of clinker per day. Energy and exergy analysis has been performed to assess first and second ...  Read More

Extraction and Characterization of Natural Fibres from Plantain (Musa paradisiaca) Stalk Wastes

A. G. Adeniyi; D. V. Onifade; J. O. Ighalo; S. A. Abdulkareem; M. K. Amosa

Volume 11, Issue 2 , June 2020, Pages 116-121

  Plantain stalks obtained from solid waste stream of Ganmo market in Ilorin was used in this study. Natural fibres extraction from waste plantain stalk was achieved using biological retting methods. The natural fibre was rented from the waste stalk after 24 days of soaking in water. The extracted fibres ...  Read More

Conversion of Degradable Municipal Solid Waste into Fuel Briquette: Case of Jimma City Municipal Solid Waste

A. B. Bayu; T. A. Amibo; D. A. Akuma

Volume 11, Issue 2 , June 2020, Pages 122-129

  The study was done to explore the production of charcoal briquettes that could meet the need for energy in the community of Jimma city. The primary objective of this work is to produce charcoal from the most promising wastes. Under these objectives the main activities which performed were sorting waste, ...  Read More

Techno-economic Feasibility Study of the Gunde Teklehaymanote Micro-hydropower Plant at Tindwat River, Central Gondar, Ethiopia

A. K. Belay; D. Atenafu; S. Birhan; T. Tegengn

Volume 11, Issue 2 , June 2020, Pages 130-136

  Ethiopia has a high potential for water for hydro-power development. Even though there is untapped potential, the country's electricity coverage is poor. This paper presents a technical-economic feasibility study of gunde micro hydropower at the Tindwat River, Central Gondar, Ethiopia. In the techno-economics ...  Read More

Effectiveness of Continuous and Discontinuous-Flow Strategies in Heat Dynamics and Performance of Asphalt Solar Collector: An Experimental Study

H. Farzan; M. Ameri; S. M. Jaafarian

Volume 11, Issue 2 , June 2020, Pages 137-145

  Asphalt solar collectors (ASCs) offer a low-cost and reliable alternative to harvest energy from available infrastructures such as roads and pathways by employing the simple techniques. This paper represents an experimental study to evaluate the effectiveness of continuous and discontinuous-flow strategies ...  Read More

Assessment of Environmental Impact and Formation Factor for Triple Blend Concrete

V. N. Kanthe; S. V. Deo; M. Murmu

Volume 11, Issue 2 , June 2020, Pages 146-151

  The assessment of environmental impact on concrete is an important aspect for its durability. The use of supplementary cementitious materials (SCMs) in the concrete can be enhanced the durability. This makes concrete sustainable and reduced environmental issues. In this research paper illustrate the ...  Read More

Impact Energy of Weld Metal in CK45 Carbon Steel

H. R. Ghazvinloo

Volume 11, Issue 2 , June 2020, Pages 152-156

  Due to high joint efficiency, welding is widely used to join materials. Today, there are many types of welding procedures in different manufacturing industries. Among welding procedures, Gas Metal Arc Welding (GMAW) is a versatile process due to its high flexibility. In this process, arc voltage, welding ...  Read More

Adsorption Isotherms and Kinetics of Lead and Cadmium Ions: Comparative Studies Using Modified Melon (Citrullus colocynthis) Husk

F. J. Ogbozige; M. A. Toko

Volume 11, Issue 2 , June 2020, Pages 157-162

  Growth in population has caused a corresponding increase in agricultural production which consequently led to an increase in agricultural wastes or byproducts. This is sometimes difficult to manage and may pose a menace to the society if not properly disposed. Hence, this research investigated the efficacy ...  Read More

Three-dimensional Numerical Study of the Performance of a Small Combined Savonius-Darrieus Vertical Wind Turbine

A. Nemati

Volume 11, Issue 2 , June 2020, Pages 163-169

  Energy crisis and global warming have encouraged the use of renewable energy resources such as wind power. Among different types of wind turbines, vertical axis wind turbines can be easily installed in residential areas. In this study, a computational fluid dynamics analysis was performed to predict ...  Read More

Abilities of Three Microorganisms for Cleaning Cadmium Contaminated Soils

N. I. Ihimekpen; E. Atikpo; N. Kayode-Ojo; A. Michael

Volume 11, Issue 2 , June 2020, Pages 170-177

  The abilities of three indigenous bacteria for bioremediation of cadmium contaminated soils collected from Agbabu Farm Settlement close to mining sites in Ondo state, Nigeria was studied to provide helpful information for soils remediation and soils health management in this sub-region for Millennium ...  Read More