Direct Measurements of Turbulence and Flow Characteristics of a Vertical Axis Wind Turbine Using the Eddy Covariance Method

Y. H’ng; Y. Yusup

Volume 7, Issue 2 , April 2016, Pages 84-93

https://doi.org/10.5829/idosi.ijee.2016.07.02.01

Abstract
  Turbulence intensity measurements of vertical axis wind turbine (VAWT) are essential to detemineitsefficiency and performance. In this study, the eddy covariance (EC) method was used to characterise the flow and directly measure turbulence of a VAWT in a controlled indoor laboratory using an ultrasonic ...  Read More

Effect of Substrate and Granules/Inocula Sizes on Biochemical Methane Potential and Methane Kinetics

S. Jijai; G. Srisuwan; S. O-Thong; I. Norli; C. Siripatana

Volume 7, Issue 2 , April 2016, Pages 94-101

https://doi.org/10.5829/idosi.ijee.2016.07.02.02

Abstract
  This study aimed  to  evaluate  the  Biochemical Methane Potential (BMP) of different types of wastewaters and sizes of granules. The granules (CS: from a cassava, SS: a seafood, and PS: a palm oil factory) and wastewaters initial Chemical Oxygen Demand (COD) were 18,800, 4,200 ...  Read More

A Comparative Study on Biogas Production between Day and Night at Sime Darby’s Palm Oil Mill

M. A. Ubaidah; S. M. H. Syed Hilmi; M. F. Mohammed Yunus; S. Tahiruddin

Volume 7, Issue 2 , April 2016, Pages 102-108

https://doi.org/10.5829/idosi.ijee.2016.07.02.03

Abstract
  Freely emitted biogas at palm oil mills has been regarded as untapped energy source nowadays, despite being recognised as major contributor to the global warming. Up till now, most of palm oil mills are still operating with the conventional anaerobic digestion systems which may not spur biogas industry ...  Read More

Sythesis of Biodiesel from Coconut Waste via In-situ Transesterification

M. N. Noorzalila; M. A. Nurul Asikin

Volume 7, Issue 2 , April 2016, Pages 109-113

https://doi.org/10.5829/idosi.ijee.2016.07.02.04

Abstract
  The increasing number of environmental pollution through carbon emission from combustion of fuels and the unstable fluctuation of global petroleum prices have alarmed a signal that a clean alternative energy is in urgent need. Through the past years, a lot of researches have been focusing in producing ...  Read More

Biological Treatment Processes: Suspended Growth vs. Attached Growth

A. Ebrahimi; G. D. Najafpour

Volume 7, Issue 2 , April 2016, Pages 114-123

https://doi.org/10.5829/idosi.ijee.2016.07.02.05

Abstract
  Microorganisms play an important role in biological treatment processes. Biodegradable organic matter in wastewater would be removed completely by proper microbial consortia. The mixed culture is either generally present in the wastewater, or is introduced to the target wastewater by mixing it with domestic ...  Read More

Preparation of Chitosan Beads for the Adsorption of Reactive Blue 4 from Aqueous Solutions

M. T. Vakili; M. Rafatullah; M. H. Ibrahim; A. Z. Abdullah; B. Salamatinia; Z. Gholami

Volume 7, Issue 2 , April 2016, Pages 124-128

https://doi.org/10.5829/idosi.ijee.2016.07.02.06

Abstract
  In the present study, chitosan beads were prepared at different preparation conditions and then applied for adsorption of Reactive Blue 4 (RB4) in a batch adsorption process. Effect of beading parameters such as chitosan concentration, acetic acid concentration and temperature in the removal of ...  Read More

Enhancement of Remazol Brilliant Blue R Adsorption Capacity by using Modified Clinoptilolite

R. Alrozi; N. S. Anuar; F. Senusi; M. A. Kamaruddin

Volume 7, Issue 2 , April 2016, Pages 129-136

https://doi.org/10.5829/idosi.ijee.2016.07.02.07

Abstract
  In this study, the adsorption behavior of Remazol Brilliant Blue R (RBBR) from aqueous solution by using raw and modified clinoptilolites were investigated. In the experimental work, raw clinoptilolite (R-CL) was treated with Zn(NO3)2  in ethanol and produced zinc-grafted clinoptilolite (Zn-CL).The adsorption ...  Read More

Uptake of Metals by Live Green Macroalgae Ulva reticulata in Industrial Wastewater of Bayan Lepas, Penang, Malaysia

S. Khodami; M. Surif; W. M. Wan Omar

Volume 7, Issue 2 , April 2016, Pages 137-143

https://doi.org/10.5829/idosi.ijee.2016.07.02.08

Abstract
  This study was conducted to investigate the ability of Ulva reticulata (Chlorophyta) to remove Cd, Co, Cr, Cu, Fe, M n, M g, Pb, V, and Zn from industrial wastewater. A 24 h experiment was performed under laboratory and in situ conditions, which were set up in two places: (1) the industrial area ...  Read More

A Batch Study on Removal of Heavy Metals Using Laterite Soil-Pressmud in Landfill Leachate

A. Harlina; M. Maheera; I. Norli

Volume 7, Issue 2 , April 2016, Pages 144-148

https://doi.org/10.5829/idosi.ijee.2016.07.02.09

Abstract
  This batch study focuses on suitability of laterite soil-pressmud as daily soil cover of landfill.  The laterite soil samples were mixed with waste from sugar refinery process, namely pressmud at different percentages of weight ratio (10, 30 and 50%). The batch equilibrium tests were carried out ...  Read More

Effects of Carbonization Parameters on the COD Reduction of Rhodamine B Dye Aqueous Solutions Using Elaeis guineensis Frond Fiber

L. W. Low; T. T. Teng; N. Morad; B. Azahari

Volume 7, Issue 2 , April 2016, Pages 149-155

https://doi.org/10.5829/idosi.ijee.2016.07.02.10

Abstract
  The effects of various carbonization parameters on the COD reduction of Rhodamine B dye aqueous solutions using carbonized Elaeis guineensis frond fiber (EGFF) chars have been studied experimentally. The adsorbent with the particle size of <45 µm has been carbonized at temperature from 500-900 ...  Read More

Effects of Temperature, Aeration Rate and Reaction Time on Composting of Empty Fruit Bunches of Oil-Palm

V. S. Jie Wei; C. Han Bing; Agus Saptoro; J. Nandong

Volume 7, Issue 2 , April 2016, Pages 156-162

https://doi.org/10.5829/idosi.ijee.2016.07.02.11

Abstract
  Composting is a biochemical process in a controlled aerobic environment where thermophilic microorganisms stabilize organic waste substrates into valuable humus-like products. Three parameters which are known to affect the composting process including temperature, aeration rate and composting time. This ...  Read More

Palm Oil Mill Effluent Tertiary Treatment by Physicochemical Treatment Using Ferrous Sulphate

A. Jaril Asis; M. A. Mohd Arifin; R. Ngteni; S. Tahiruddin; M. Omar Abdul Kadir

Volume 7, Issue 2 , April 2016, Pages 163-168

https://doi.org/10.5829/idosi.ijee.2016.07.02.12

Abstract
  The palm oil milling industry in Malaysia will be imposed with more stringent treated waste water discharge requirement from currently at BOD of 100 ppm to BOD of 50 ppm and gradually to BOD of 20 ppm. Study was conducted to use Ferrous Sulphate as more economical coagulant to reduce the biological load ...  Read More

Comparisons of Water Quality near Cage Culture Sites in Batang Ai Reservoir, Sarawak, Malaysia

T. Y. Ling; L. Nyanti; M. K. Nurul-Safinaz; S. F. Sim; J. Grinang

Volume 7, Issue 2 , April 2016, Pages 169-176

https://doi.org/10.5829/idosi.ijee.2016.07.02.13

Abstract
  New development and expansion of cage culture at Batang Ai Reservoir would require investigation of the water quality. Therefore, the objective of this study was to determine the water quality at three existing aquaculture sites, one abandoned site, and one station without cage culture at three different ...  Read More

Stable Isotopes Approach to Infer the Feeding Habit and Trophic Position of Freshwater Fishes in Tropical Lakes

S. K. Yap; I. Muneera; M. I. Syakir; H. H. Zarul; F. Widad

Volume 7, Issue 2 , April 2016, Pages 177-183

https://doi.org/10.5829/idosi.ijee.2016.07.02.14

Abstract
  A study was conducted on the stable isotope variation of muscle tissues from selected freshwater fish species from Temenggor Lake and Chenderoh Lake, Perak, Malaysia from December 2014 to March 2015. The objective is to assess the stable isotopes of δ13C to identify the carbon sources and ...  Read More

A Novel and Rapid Harvesting Method of Microalgae Using Saw Dust Coated Polypyrrole

S. Hena; N. Fatihah; H. Awang

Volume 7, Issue 2 , April 2016, Pages 184-192

https://doi.org/10.5829/idosi.ijee.2016.07.02.15

Abstract
  In this study a simple and rapid harvesting method using electro conductive polymer coated saw dust has been presented as a new coagulant for separating Chlorella vulgaris from a diluted suspension. Polypyrrole (PPy) coated saw dust as a novel coagulant was prepared via in-situ polymerization of pyrrole ...  Read More

Spatial and Temporal Abundance of the Reef Gastropod Tectus niloticus (Gastropoda: Tegulidae) in Marine Protected Areas in Palawan, Philippines: Prospects for Conservation

R. G. Dolorosa; A. Grant; J. A. Gill

Volume 7, Issue 2 , April 2016, Pages 193-202

https://doi.org/10.5829/idosi.ijee.2016.07.02.16

Abstract
  The unsustainable harvesting of the reef gastropod Tectus niloticus or ‘trochus’ for the production of ‘mother of pearl’ buttons have led to the collapse of its population and closure of its fishery in some countries.   With the costly conservation measure involving ...  Read More

Leaching Behavior of Construction and Demolition Waste (Concrete and Gypsum)

A. A. Nurhanim; I. Norli; N. Morad; H.P.S.A. Khalil

Volume 7, Issue 2 , April 2016, Pages 203-211

https://doi.org/10.5829/idosi.ijee.2016.07.02.17

Abstract
  Recycling of Construction and Demolition Waste (CDW) aims to minimize the generation of waste and  reduce the dependency on  natural resources. The aims of the research  are to characterize inorganic element and to determine the leaching behavior of CDW (concrete and gypsum) by means of ...  Read More