54 results for “Sludge”

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Research ArticleOpen accessEvery word in the titleAnaerobic Fermentation for Ceftriaxone Sodium Degradation in Excess Sludge: pH-Dependent Performance, Metabolite Formation, and Microbial Community DynamicsWeiwei Li, Hong Niu, Yonghui Zhang et al.The accumulation of ceftriaxone sodium (CTX), a third-generation cephalosporin antibiotic, in wastewater and sludge poses significant environmental and health risks, necessitating effective degradation strategies. This study investigated anaerobic fermentation of excess sludge (12,000-14,000 mg/L) spiked with 15 mg/L CTX under varying pH conditions (4, 7, 10, 12) to evaluate sludge reduction, metabolite formation, and microbial community dynamics. Results demonstrated that … …American Journal of Biochemistry and Biotechnology, Vol. 22, Issue 2 · 31 Jul 2026 · 857 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleAssessment of Melaleuca cajuputi as Heavy Metals Phytoremediator for Sewage Sludge Contaminated SoilShibli Nik Mohd, Nik Muhamad Majid, Noor Azhar Mohamed Shazili, Arifin AbduIn 2011, total marine capture landings in Peninsular Malaysia decreased by 3.9% which amounted to 1,373,105 tonnes as compared to 1,428,881 tonnes in 2010. The decline is connected to marine pollution which mainly comes from land based sources. Coastal forests play an important role affecting the marine ecosystem health and need to be conserved as a buffer to minimize pollution … …American Journal of Applied Sciences, Vol. 10, Issue 9 · 24 Aug 2013 · 7,463 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleThe Effect of Higher Sludge Recycling Rate on Anaerobic Treatment of Palm Oil Mill Effluent in a Semi-Commercial Closed Digester for Renewable EnergyAlawi Sulaiman, Zainuri Busu, Meisam Tabatabaei et al.Problem statement: A 500 m3 semi-commercial closed anaerobic digester was constructed for Palm Oil Mill Effluent (POME) treatment and methane gas capture for renewable energy. During the start-up operation period, the Volatile Fatty Acids (VFA) accumulation could not be controlled and caused instability on the system. Approach: A settling tank was installed and sludge was recycled as to provide a … …American Journal of Biochemistry and Biotechnology, Vol. 5, Issue 1 · 31 Mar 2009 · 9,210 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleInvestigation of Cadmium (II) Ions Biosorption onto Pretreated Dried Activated SludgeR. Darvishi Cheshmeh Soltani, A. Jonidi Jafari, Gh. Shams KhorramabadiProblem statement: Heavy metals have been one of hazardous components in industrial effluents that can be damaged on the environment by discharging uncontrolled wastewater. The aims of this investigation were biosorption of Cd (II) ions onto pretreated dried activated sludge and determination of kinetic and isotherm of biosorption. Approach: Activated sludge was obtained from Tehran municipal wastewater treatment plant. Activated … …American Journal of Environmental Sciences, Vol. 5, Issue 1 · 28 Feb 2009 · 7,706 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleSewage Treatment Plant Sludge: A Source of Potential Microorganism for Citric Acid ProductionParveen Jamal, Md. Zahangir Alam, M. Ramlan et al.This research emphasizes on the utilization of Sewage Treatment Plant (STP) sludge, which is an inexpensive and easily available raw material and a good source for growth of microorganisms because it has enough nutrients and trace elements. This can be considered as an alternative cost effective solution for waste management in addition to the production of a value added product … …American Journal of Applied Sciences, Vol. 2, Issue 8 · 31 Aug 2005 · 8,933 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleReduction of Ammonia Volatilization through Mixing Urea with Humic and Fulvic Acids isolated from Palm Oil Mill Effluent SludgeShamsuddin Rosliza, Osumanu Haruna Ahmed, Nik Muhamad Ab. Majid, Mohamadu Boyie JallohProblem statement: Ammonia volatilization from surface-applied urea may be substantial but it is possible to control it by mixing urea with acidic substances such as Humic Acids (HA) and Fulvic Acids (FA). The objective of this study was to compare the effects of urea-HA, urea-FA, urea-acidified (HA+FA) mixtures on ammonia loss, soil pH, soil exchangeable ammonium and available nitrate accumulation … …American Journal of Environmental Sciences, Vol. 5, Issue 3 · 30 Jun 2009 · 7,350 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsPhysic-Geographic Factors of Oil Development in the Chechen RepublicUmar Tashadievich Gayrabekov, Alexey Nikolaevich Gunja, Tumisha Khamidovna BachaevaOil development in the Chechen Republic for a long time has led to formation of widespread and inwardly heterogeneous area of oil development business impact on the natural complexes in the neighborhood. Therefore, authors have set the goal of detecting physic-geographical factors of the area where oil has been intensively developed for almost two centuries. The research made by the … …American Journal of Environmental Sciences, Vol. 10, Issue 6 · 16 Jan 2015 · 7,622 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsInvestigating the Effect of Three Nitrate Fertilizers on Nitrate Leaching under the Root Zone in Clay Loam SoilThamer Ahmed Mohammed, M. Nooshin, Megat Johari Megat Mohd. Noor, A. LiaghatProblem statements: Nitrogen fertilizer is recognized as an important factor in crop’s yield level, however more application of N fertilizers in the soil have some adverse effects on environment and especially on groundwater contamination. Perception and recognition the factors influencing nitrate transport through soil profile is helpful for fertilizer management to minimize adverse impacts on environment and nitrate leaching below … …American Journal of Environmental Sciences, Vol. 5, Issue 3 · 30 Jun 2009 · 7,064 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsReducing the Environmental Impact of Olive Mill WastewaterAwni Khatib, Fathi Aqra, Nader Yaghi et al.Problem Statement: A research was needed to monitor the environmental impact of olive mill wastewater (OMW): production and relative production of olive mill waste. This was achieved by collecting data from 92 local olive mills in order to study the olive production yield, water consumption in olive washing and in oil recovery, wastewater generation relative to olive processed and oil … …American Journal of Environmental Sciences, Vol. 5, Issue 1 · 28 Feb 2009 · 8,043 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsPeriodic and Non Periodic (Complex) Behavior of a Model of Bioreactor With Cell RecyclingG. Ibrahim, M. A. Ramadan, S. A.A. El-Marouf, A. M. Al-MahdiA structured model of bioreactor for an activated sludge process was presented. The stability and bifurcation characteristics of the model are investigated, the bifurcation analysis of the model shows static and complex dynamic behavior (periodic and complex) over a wide range of the model parameters. The model exhibits a new interesting behavior (in some range of parameters) including four static … …Journal of Mathematics and Statistics, Vol. 3, Issue 1 · 31 Mar 2007 · 6,776 accessesView PDF Cite