Treatment of dyes from wastewater is obligatory in order to avoid water pollution. Batch adsoprtion studies were carried out to evaluate the potentiality of ba-gases. Various parameters such as initial dye concentration, pH as well as temperature of the system were studied. The adsorption was found to fallow first order kinetics and intraparticle difussion is the date controlling step. The adso...

We optimize a general model of bioprocesses, which is nonconvex due to the microbial growth in biochemical reactors. formulate convex relaxation and give conditions guaranteeing its exactness both transient steady-state cases. When kinetics are modeled by Contois or, under constant biomass, Monod or Powell functions, second-order cone program, can be solved efficiently at large scales. implemen...

The biological treatment of wastewater discharged from a biodiesel fuel (BDF) production plant conducting alkali catalysis transesterification was investigated. BDF wastewater has a high pH and high hexane-extracted oil and low nitrogen concentrations, and inhibits the growth of microorganisms. The biological treatment of BDF wastewater is difficult because the composition of such wastewater is...

Molecular imprinted polymers (MIP) are considered one of the most promising selective and novel separation methods for removal phenolic compound in wastewater treatment. MIP are crosslinked polymeric materials that exhibit high binding capacity and selectivity towards a target molecule (template), purposely present during the synthesis process. In this work MIP were prepared in a bulk polymeriz...

A review of the literature published in 2014 on topics relating to public and environmental health risks associated with wastewater treatment, reuse, and disposal is presented. This review is divided into the following sections: wastewater management, microbial hazards, chemical hazards, wastewater reuse, wastewater treatment plants, wastewater disposal, and sludge and biosolids.

We consider a control problem for a single bioreaction occuring in a continuous and well mixed bioreactor, assuming that the bioreaction’s kinetics is not represented by a validated model. We develop a nonlinear controller and prove the global asymptotic stability of the closed loop system towards the equilibrium corresponding to the set point. Since this control law needs the knowledge of some...

Monitoring and control of redox processes are key to operate wastewater chemical treatment plants at high-loading-rate whilst rejecting concentration and composition disturbances. Carbon dioxide concentration and oxidationreduction potential (ORP) are selected as key inferential measurements of oxidation kinetics and oxidant reagent consumption. An extremum-seeking control cascade is proposed f...

The aqueous extract from the bark of Punica granatum L. was invested to generate CuO nanoparticles CuSO4 using a green, economical, ecological, and clean method. synthesized were characterized successfully used as adsorbents for methyl green retention an absorptive capacity amounting 28.7 mg g?1. Methyl equilibrium adsorption data correlated Langmuir model following pseudo-second order kinetics...

The adsorption of dyes in the solutions using activated sludge might be a promising approach in wastewater treatment units. The adsorption of Basic Red 18 and Basic Blue 9 from aqueous solution by dried activated sludge was investigated with in a batch system. The activated sludge had the highest dye uptake capacity, having the monolayer adsorption capacity 285.71 and 256.41 mg g(-1) for Basic ...

Overuse of antibiotics has resulted in widespread contamination the environment and triggered antibiotic resistance pathogenic bacteria. Conventional wastewater treatment plants (WWTPs) are not equipped to remove antibiotics. Effluents from WWTPs usually primary source aquatic environments. There is an urgent need for cost-effective, environment-friendly technologies address this issue. Along w...