Open Access Original Research Article

Design of Medical Wastes Incinerator for Health Care Facilities in Akure

O. O. Olanrewaju, R. J. Fasinmirin

Journal of Engineering Research and Reports, Page 1-13
DOI: 10.9734/jerr/2019/v5i216919

Health Care Facilities (HCFs) are primarily saddled with the responsibilities of providing medical care, thus ensuring sound health of individuals. Tremendous efforts have been made by the government to ensure her availability in nooks and crannies of every community, which have resulted into improved medical services. However, among other environmental challenges confronting health care facilities in developing countries is Medical Waste generated in the course of carrying out their duties which is often ignored and in most instances treated as municipal or domestic solid waste. Effective management of medical waste requires keen planning, training and tracking throughout the waste generation, segregation, storage, collection, transportation, treatment and disposal processes. The fundamental information for selecting and designing the most efficient treatment method of medical waste is obtained by means of Waste Composition Analysis. Results from this study revealed that the daily waste generation rate of Ondo State Specialist Hospital Akure (OSSHA) and Mother and Child Hospital Akure (MCHA) was 124.5 kg/day. The hospitals’ waste consists of 81.6% combustible wastes and 18.4% non-combustible wastes by mass. The combustible wastes are paper (6.50%), textiles (14.34%), cardboard (3.88%), plastics (6.04%) and food waste (19.08%). Since the ratio of combustible medical waste is higher than non-combustible medical waste, incineration (thermal destruction) at elevated temperature under controlled operational condition is considered the best disposal option to detoxify the medical waste. In other to prevent the release of harmful gases from burnt medical waste through incinerator, a counter-current packed bed wet scrubber is designed which operates by impaction and absorption.

Open Access Original Research Article

Structural Shear Behavior of Composite Box Beams Using Advanced Innovated Materials

Abeer M. Erfan, Taha A. El-Sayed

Journal of Engineering Research and Reports, Page 1-14
DOI: 10.9734/jerr/2019/v5i216920

This paper presents a new conception of shear behaviour of box concrete beams reinforced by composite fabrics. For this purpose, stirrups, wire meshes as shear reinforcement were used. Seven box section concrete beams were tested using two-point loading system. Beams with tensar wire mesh exhibited increasing in ultimate failure load, shear capacity and deflection with respect to beams used fiber-glass wire mesh instead of stirrups. Nonlinear finite element analysis was conducted using finite element program of ANSYS 14.5 to verify the experimental test program. An acceptable acceptance found between the experimental and numerical results.

Open Access Original Research Article

Recycled Rice & Wheat Straw Ash as Cement Replacement Materials

Taha A. El-Sayed, Abeer M. Erfan, Ragab M. Abd El-Naby

Journal of Engineering Research and Reports, Page 1-9
DOI: 10.9734/jerr/2019/v5i216921

In this paper an experimental study was made on the effects of using Rice Straw Ash (RSA) & Wheat Straw Ash (WSA) as partial replacements of cement in mortar. The objects were to produce Nano Silica (NS) form RSA & WSA as agricultural wastes by using chemical acids. Then, control specimens with Ordinary Portland Cement (OPC) was made and in other specimen’s cement were replaced with 5%, 10%, 15% and 20% of RS & WS ashes by weight of cement. The workability was measured by the slump test. The pulse velocity and the sorptivity were also computed. The compressive and tensile strengths were also estimated. Experimental result showed that it was feasible to produce silica from WSA by chemical activation method. Also, the highest compressive strength, tensile strength and sorptivity noticed at 15% WSA.

Open Access Original Research Article

Specialized Singulation Punch Design for Package Chip-out Elimination

Antonio R. Sumagpang Jr, Frederick Ray I. Gomez

Journal of Engineering Research and Reports, Page 1-7
DOI: 10.9734/jerr/2019/v5i216922

In the semiconductor manufacturing industry, package chip-out is a common defect frequently encountered in trim and form (T/F) process.  For thin shrink small outline package (TSSOP), top defect incurred during assembly manufacturing was the package chip-out located at the top surface of the package. In this scenario, the end-of-line (EOL) process parts per million (PPM) and its non-conformance report (NCR) are high. This paper discussed how the TSSOP20 package (hereinafter referred to as Device A) chip-out was addressed and replicated or simulated through package design simulation.

Open Access Original Research Article

Sewer Water Effect on the Corrosion of Cast Iron before and after Treatment

Mona A. A. Abdelfattah, M. Sobhi

Journal of Engineering Research and Reports, Page 1-7
DOI: 10.9734/jerr/2019/v5i216923

This study aimed to compare and evaluate the effects of sewer water treated by bio-filter reactors using agriculture waste and that untreated on the corrosion of cast iron pipes. The bio-filter reactor used in this study composed of two types of agriculture wastes which are a two layer of both grape stalks and rice husk. Also, the sewer water quality parameters were tested and calculated before and after treatment. The corrosion rate was tested chemically by using the weight loss technique and it was found that the rate in case of iron immersed in sewer water before treatment was higher than that immersed in treated one.