Biosorption of reactive red 2 using positively charged Metapenaeus monoceros shells

Metapenaeus monoceros shell used for the removal of reactive red 2 from an aqueous solution was studied by batch biosorption system. The maximum dye uptake capacity was examined at biosorbent dosage, different pH, contact time and initial dye concentration. From the study the maximum dye uptake capacity was obtained as 166 mg/g at an optimal condition of 0.1 g/L of biosorbent dosage, pH value of 2 and initial dye concentration of 100 mg/L. When compared to the Langmuir isotherm model, the equilibrium data were fitted well with the Freundlich isotherm model. The kinetic data were fitted well with the pseudo second order rate equation when compared to the pseudo first order rate equation. The biosorbent characteristics were observed by SEM and FTIR analyses

High-Throughput in Wireless Mesh Networks Using Different Routing Metrics

ABSTRACT-Wireless Mesh Networks (WMN) can be designed using a routing technique. There is lot of protocols developed for many packets delivery, but they fail in the path selection in the presence of selfish nodes. To overcome this problem, Cross layer metrics is developed which is used to select the path that delivers the highest packet. The Optimized Link State Routing Protocol (OLSR) is used by individual nodes to compute next hop destinations for all nodes in the network.Expected Forwarded Counter (EFW), and two further variants, handle with the problem of selfish behavior (i.e., packet dropping) of mesh routers in a WMN. EFW selects reliable and high-performance path for packet transmission. The results show that the path reliability and increase the performance of the network