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Parametric Response Evaluation for Xanthosoma spp. Induced Coag-Flocculation of brewery Effluent

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Green and Sustainable Chemistry 2014年第1期4卷 7-14页

作者： Bernard Ibezimako Okolo Patrick Chukwudi Nnaji Matthew Chukwudi Menkiti Victor Ifeanyi Ugonabo Okechukwu Dominic Onukwuli Chemical Engineering Department Michael Okpara University of Agriculture Umudike Nigeria Chemical Engineering Department Nnamdi Azikiwe University Awka Nigeria

This paper presents the kinetic and functional parametric behavior of cocoyam coagulant (CYC) in respect of pH and time variation in brewery effluent at room temperature. The study employed standard nephelometric jar test while CYC production was based on method reported by Ndabigengesere. Coag-flocculation parameter such as order of reaction α, rate constant K, coagulation period, τ1/2 etc. were determined. Maximum parameter values are recorded at K of 6 × 10-1 L/mg·min;dosage of 200 mg/L, pH 8 and τ1/2 of 0.00146 min while the minimum values are recorded at 3 × 10-7 L/mg, dosage of 100 mg/L, pH 10 and τ1/2 of 20.4 min. The maximum coag-flocculation efficiency E (%) obtained was 92.28, thus establishing CYC as a potential effective coag-flocculaant.

关键词： Cocoyam brewery Effluent Coag-Flocculation Xanthosoma spp. Perikinetic

Application of Single Angle Turbidimetry on Coag-Flocculation Effect of <i>Detarium microcarpum</i>Seed in brewery Effluent

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Materials Sciences and Applications 2014年第6期5卷 416-429页

作者： Bernard Ibezim Okolo Patrick Chukwudi Nnaji Matthew Chukwudi Menkiti Victor Ifeanyi Ugonabo Okechukwu Dominic Onukwuli Department of Chemical Engineering Michael Okpara University of Agriculture Umudike Nigeria Department of Chemical Engineering Nnamdi Azikiwe University Awka Nigeria

Coagulation-flocculation is a proven technique for the removal of suspended solids in wastewater, through the application of single angle turbidimetric measurement. Through this measurement, the coag-flocculation kinetics and functional parameters behavior of Detarium microcarpumin brewery effluent with respect to pH, dosage and time were followed at room temperature. Process parameters such as order of reaction α, rate constant (K), coagulation period τ1/2 etc were determined. Results indicated that reaction order, rate constant, period, pH and dosage recorded optimum values at 2, 1.8 × 10-2 L/***, 0.152 min, 4 and 100 mg/L, respectively. Maximum efficiency recorded was 96.07% at 30 min. Detarium microcarpum has shown potential as an effective bio-coagulant for the removal of turbidity from brewery effluent.

关键词： Detarium microcarpum Coagulation-Flocculation brewery Effluent Turbidimetry

Optimal Evaluation of Coag-Flocculation Factors for Alum-brewery Effluent System by Response Surface Methodology

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Journal of Minerals and Materials Characterization and Engineering 2012年第5期11卷 543-558页

作者： M.C. Menkiti M.C. Aneke E.B. Ogbuene O.D. Onukwuli E.O. Ekumankama Centre for Environmental Management and Control University of Nigeria Enugu Campus Nigeria. Department of Chemical Engineering Nnamdi Azikiwe University Awka Nigeria Department of Food Science and Technology Ebonyi State University Abakaliki Nigeria School of Built and Natural Environment Northumbria University Ellison Building New Castel Upon Tyne United Kingdom

This work investigates coag-flocculation optimization treatment of alum-brewery effluent system via response surface methodology (RSM). To minimize suspended and dissolved particles (SDP), experiments were carried out using nephelometric jar test and 23-factorial design with three star-points, six-center-points and two replications. A central composite design, which is the standard design of RSM, was used to evaluate the effects and interactions of three major factors (coagulation pH, coagulant dosage, settling time) on the treatment efficiency. Multivariable quadratic model developed for the response studied indicates the optimum conditions to be 9, 500mg/l and 20minutes for coagulation pH, coagulant dosage and settling time, respectively. At optimum, the SDP was reduced from 10831.490mg/l to 801.451mg/l, representing 92.601% removal efficiency. RSM has demonstrated to be appropriate approach for the optimization of the coag-flocculation process by statistical evaluation.

关键词： Coag-flocculation brewery effluent Alum Response surface methodology Central composite design

Ecosystem services of coastal sand dunes saw from the aspect of Sake breweries in Chiba Prefecture, Japan: A comparison of coastal and inland areas

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Open Journal of Ecology 2013年第1期3卷 48-52页

作者： Korehisa Kaneko Keiko Oshida Hajime Matsushima Department of Transportation Engineering and Socio-Technology College of Science and Technology Nihon University Chiba Japan Hokuso Creature Association Tokyo Japan Research Faculty of Agriculture Hokkaido University Sapporo Japan

In this report, we reviewed the differences in the ecosystem services of coastal and inland areas surrounding 39 Sake breweries in Chiba Prefecture by investigating environmental variables (e.g., location, altitude, soil, and hardness of preparation water). The Sake breweries were located in three distinct environments: the coastal vicinity, the river plains region, and the plateau/ mountainous region. The hardness of the preparation water and the soil types in the coastal vicinity were compared with those of the river plains and the plateau/mountainous region. Strong hard and hard water sources were observed in 70% or more of the breweries in the coastal vicinity, and sand dune regosol, coarse particle brown lowland soil, and coarse particle grey soil were more prevalent along the coast than inland. Most of the Sake brewery wells in the coastal vicinity were approximately 5 - 10 munderground, and there were no great differences in the number of Sake breweries in each well depth class in the river plains and the plateau/mountains region. We analysed environmental factors (distance from the sea, soil type, water hardness and preparation water collection depth) using a principal component analysis. This analysis revealed the existence of three main environments: the coastal vicinity, the river plains and the plateau/mountainous region. We conclude that the decrease in altitude between the inland Sake breweries and those along the coast is accompanied by a corresponding increase in the hardness of preparation water (from soft water to strong hard or hard water) and shifts in soil composition from gley soil, grey lowland soil, brown forest soil, and andosol to sand dune regosol, coarse particle brown lowland soil, and coarse particle grey soil.

关键词： Ecosystem Service Sake brewery Freshwater Freshwater Layer Soil Hardness

Several Characteristics of Granular Sludge Blanket and Granular Sludge in Interior Diversion-EGSB Reactor

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地学前缘 2009年第S1期16卷 74-74页

作者： Guang Li,Baoliang Geng School of Water Resources & Environment,China University of Geosciences(Beijing),Beijing 100083,China.

The influence of up-flow velocity on the working state and characteristics of the granular sludge blanket in Interior Diversion Expanded Granular Sludge Blanket（ID-EGSB）reactor for treating brewery wastewater were studied in this *** results show that the proper up-flow velocity（Vup）should be 2.1-3.3 m/h with the COD concentration of 18215-18304 mg/L,while the sludge bed reactor is inflated with expansion rate of 43.7%.When the organic loading rate reaches to 18.22-18.30 kgCOD/(m3·d-1),COD removal rate remains stabilized above 85.3%and the reactor ran without plug

关键词： brewery wastewater expanded granular sludge EGSB