Potential applicability of Jatropha curcas leaves in bioethanol production and their composites with polymer in wastewater treatment

Abstract Among the biggest issues facing world now are fuel shortages and water contamination. Therefore, goal of current study was directed to produce bioethanol from Jatropha curcas leaves use residual wastes in form composite sheets for crystal violet (CV) removal. The were collected , irrigated by various irrigation sources; sewage-water (A), sewage-water-sludge (B), tap (C). acid hydrolysis (4% H 2 SO 4 ) these demonstrated that (A) produced higher values total reducing sugars (≈ 21 g/l) than other (B &C). Moreover, concentrations obtained fermentation this hydrolysate at bioreactor scale using Candida tropicalis Saccharomyces cerevisiae (≈10 7 ml/l, respectively) relatively increased compared flask level (≈7 5 respectively). Afterwards, unhydrolyzed dried, grinded, embedded polyvinyl chloride (PVC) polymer forming sheets. characterized FT-IR, SEM, swelling, porosity. highest CV removal percent 95.39%, after optimization, achieved 100 ppm concentration 2.5 g/l PVC-A sheet 180-min contact time.