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26 results for “physical-chemical parameters”
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Research ArticleOpen accessIn the abstractInfluence of Microbial Inoculants on Feeding Value of Spent Lentinula edodes SubstrateYunfu Gu, Min Yi, Jianzhou Chen, Xiaoping ZhangSawdust-based Spent Lentinula Edodes Substrate (SLES) is an important agricultural waste resource for its’ huge production amount, on the other hand, it is hard to recycling because of the low digestibility. For the purpose of recycling the SLES, a study was conducted to improve the feeding values of SLES via microbial inoculation. The SLES was ensiled with 0.5% (v/w) Lactic … …American Journal of Agricultural and Biological Sciences, Vol. 7, Issue 4 · 20 Sep 2012 · 7,915 accessesView PDFCite
Research ArticleOpen accessIn the abstractStudy of Ambient and Indoor Air Quality in the Building Built on the Former LandfillAnuar Ithnin, Nazipah Zakaria, Nor Azura Sulong et al.Problem statement: The air quality study of PPR Taman Wahyu II, Selayang, Selangor was a residential project that was built on the former landfill site. The landfill site will produce landfill gases which can influence the air quality level in and outside the building. Approach: This air quality study also involving PPR Intan Baiduri, Batu Caves, Selangor as a control … …American Journal of Applied Sciences, Vol. 9, Issue 8 · 21 Jun 2012 · 6,994 accessesView PDFCite
Research ArticleOpen accessIn the abstractEcological Monitoring of Danube water Quality in Budapest RegionHosam E.A.F. Bayoumi Hamuda, Istvan PatkoProblem statement: Serious health problems and other economic costs related to water treatment, remediation and locating a new water supply, become an evidence of water pollution caused by human activities. The main problems of the Danube River basin are associated with nutrients, organic pollution and hazardous pollutants. The aim of the study is to assess the surface water of the … …American Journal of Environmental Sciences, Vol. 8, Issue 3 · 5 Apr 2012 · 9,033 accessesView PDFCite
Research ArticleOpen accessIn the abstractPerformance Evaluation of an Oxidation Ditch System with a Disc AeratorAbdel Ghaly, Ashley ThistleProblem statement: The oxidation ditch system has been used to treat various types of wastewaters. Several types of aerators are used to supply the treatment process with oxygen. Among these devices, the disc aerator has certain advantages regarding foam generation over the brush and paddle type rotors, but the main disadvantages of this aerator is the limited oxygenation capacity. The … …American Journal of Applied Sciences, Vol. 8, Issue 7 · 24 Jun 2011 · 8,117 accessesView PDFCite
Research ArticleOpen accessIn the abstractVariable Viscosity, Chemical Reaction and Thermal Stratification Effects on Mixed Convection Heat and Mass Transfer along a Semi-Infinite Vertical PlateP. Geetha, M.B.K. MoorthyProblem statement: In this research the researchers studied and made an analysis to the heat and mass transfer characteristics in a viscous fluid over a semi-infinite vertical porous plate by taking into account the variable viscosity, chemical reaction and thermal stratification effects. Approach: The governing partial differential equations were transformed into a set of coupled non-linear ordinary differential equations, which … …American Journal of Applied Sciences, Vol. 8, Issue 6 · 13 Jun 2011 · 6,852 accessesView PDFCite
Research ArticleOpen accessIn the abstractModelisation of Nitrification under Inhibited Environment by Moving Bed Bio-Film Reactor TechniquePham Thi Hong Duc, Le Van Cat, Jean-Luc VaselProblem statement: Nitrification by Moving Bed Biofilm Reactor (MBBR) involves physical, chemical and biological processes to remove toxic ammonia for aquaculture that are governed by a variety of parameters, like substrate and dissolved oxygen concentrations, organic matters, temperature, pH, alkalinity and turbulence level, which impact negatively or positively on nitrification kinetics. Approach: The situation becomes more serious as the reaction … …American Journal of Environmental Sciences, Vol. 6, Issue 6 · 31 Dec 2010 · 6,951 accessesView PDFCite
Research ArticleOpen accessIn the abstractComparative Study of Water Quality at Different Peat Swamp Forest of Batang Igan, Sibu SarawakNoraini Rosli, Seca Gandaseca, Johan Ismail, Mohd Iqbal JailanProblem statement: It is important to find the status of water quality at converted peat swamp forest into oil palm plantation. This study was conducted to find and determine the water quality at peat swamp forest of Batang Igan, Sibu Sarawak. This study presents a status on the water quality of peat swamp forest at the area. Approach: In-situ data … …American Journal of Environmental Sciences, Vol. 6, Issue 5 · 31 Oct 2010 · 13,159 accessesView PDFCite
Research ArticleOpen accessIn the abstractBuffering Capacity of Fast-Growing Species and Curing Time of UF Resin Modified With Zinc Borate and Monoammonium PhosphateIzran Kamal, Koh Mok Poh, Tan Yu Eng et al.Problem statement: Occupying a suitable hot pressing time for particleboard fabrication seems very tricky for manufacturers of the wood-based panel. Longer or shorter pressing times can affect physical and mechanical properties of the produced particleboards and that is why extra care should be given on this matter. Longer pressing time can cause resin in a particleboard to over-cure whereas shorter … …American Journal of Applied Sciences, Vol. 7, Issue 8 · 31 Aug 2010 · 7,784 accessesView PDFCite
Research ArticleOpen accessIn the abstractExploring the Reuse Potential of Chemical Sludge from Textile Wastewater Treatment Plants in India-A Hazardous WasteHema Patel, Suneel PandeyProblem statement: This study was conducted to explore the reuse potential of the chemical sludge (considered as hazardous waste as per Indian Government Hazardous Waste Management Rules) generated from combined effluent treatment in textile clusters. These textile clusters mainly cover the cotton dyeing and printing operations. Approach: Therefore, treatability studies of chemical sludge were conducted using solidification/stabilization treatment to examine … …American Journal of Environmental Sciences, Vol. 5, Issue 1 · 28 Feb 2009 · 8,547 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Spatial-Temporal Variability of Nitrates in a Section of the Cuneo Plain (North West Italy)Massimo Vincenzo Civita, Adriano Fiorucci, Bartolomeo VignaThe study of an aquifer system is very important, but also very complicated because of the high temporal and spatial variabilities of a system and because of the phenomena that are at play within the system. It is from these problems that the necessity arises of finding methods that are able to extend point knowledge to an entire area, while … …American Journal of Environmental Sciences, Vol. 3, Issue 3 · 30 Sep 2007 · 6,733 accessesView PDFCite