Reusing and recycling treated wastewater is a sustainable approach to meet the growing demand for clean water, ensuring its availability for both current and future generations. Wastewater can be treated in such advanced ways that it can be used for industrial operations, recharging groundwater, irrigation of fields, or even manufacturing drinkable water. This strategy meets growing water demand in water-scarce areas while protecting natural ecosystems. Treated wastewater is both a resource and a challenge. Though it may be nutrient-rich and can increase agricultural output while showing resource reuse and environmental conservation, high treatment costs, public acceptance, and contamination hazards limit its use. Proper treatment can reduce these hazards, safeguarding human health and the environment while enhancing its benefits, including a stable water supply, nutrient-rich irrigation, higher crop yields, economic development, and community resilience. On the one hand, inadequate treatment may lead to soil salinization, environmental degradation, and hazardous foods. Examining the dual benefits and risks of using treated wastewater for agricultural irrigation, this paper investigates the complexities of its use as a valuable resource and as a potential hazard. Modern treatment technologies are needed to address these difficulties and to ensure safe and sustainable use. If properly handled, treated wastewater reuse has enormous potential for reducing water scarcity and expanding sustainable agriculture as well as global food security.

Present work reports an optimized protocol for the production of biodiesel through alkaline catalyzed transesterification of edible and non edible oils, three principal variables, molar ratio of methanol to oil (6:1, 12:1), catalyst weight % (0.5%-2%), reaction temperature (40°C-65°C) and reaction time (30min-120 min) effecting the yield of alkaline catalyzed production of methyl ester (biodiesel) from neem oil and palm oil were investigated. The rate of transesterification in a batch reactor increased with temperature up to 60°C. The biodiesel with the best yield and quality was produced in case of neem oil methyl ester (NOME), at 9:1 mole ratio and 1wt% of catalyst (KOH) the yield was 92%. For palm oil methyl ester (POME), the best yield was produced in the mole ratio of 10:1, 1.25 wt% of catalyst and the yield was 90%. From the cost estimation it was concluded that the POME was costlier than NOME. Design Expert 12 Software Package used for Optimization of NOME by the Response Surface Methodology.

Phenol and phenolic compounds are one of the top pollutants in environment due to their presence in various industrial effluents and their broad applications in various other fields. The results of this current study proved that isolated strain P7 is capable of degrading high capacity phenol. Optimal conditions obtained for the degradation of phenol from this strain created a solid foundation for further use of this microorganism in the treatment of phenol effluents. Studies were conducted out using Mineral Salt Agar Medium for the growth of this strain and degradation of phenol using phenol as the sole carbon and energy source for the isolated bacterial strain. The strains obtained from the phenol contaminated soil were designated as P1, P2, P3, P4, P5, P6, P7 & P8. P7 strain among these was found to be highly effective in removing phenol. Gen III biolog was used to identify the name of this P7 strain species, which is isolated from soil sample. Gen III Biolog, a phenotypic microarray identified the strain P7 as Pseudomonas Putida. Optimization studies were carried out to find out the optimum pH, temperature, inoculum volume, contact time and initial phenol concentration for the Pseudomonas Putida species. The optimum conditions obtained for maximum phenol removal were found to be pH of 7.5, temperature of 32OC, Contact time of 72hrs, phenol concentration of 200 mg/l and inoculum volume of 4v/v. The maximum biodegradation rate achieved was 93.29% from this isolated strain which indicates its potential use in the bioremediation of wastewater effluent.