2026-04-30T22:24:23Z https://meral.edu.mm/oai

oai:meral.edu.mm:recid/550 2021-12-13T01:31:55Z 1582963788001:1582966577571 user-ydbu

Study on some Parameters for Removal of Color from Cottage Textile Industrial Effluent by Using Various Adsorbents Cho Mar Kyi Aye Mar Htun Mu Mu Naing Wai Phyo Mon Textile effluent causes many environmental problems and heavy metals are persistent pollutants, non-biodegradable and can easily be accumulated in organism even at low concentrations, causing serious illness. In this research, experiments were carried out to remove the colour and heavy metal in cottage textile industrial effluents by adsorption technique by using groundnut shell based adsorbents (activated groundnut shell carbon (AGC) and alkali-modified groundnut shell ash (MGA)). Activated groundnut shell carbon (AGC) was prepared by carbonization at 600◦C for 30 minutes and activation with 2N H2SO4. Alkalimodified groundnut shell ash (MGA) was prepared by washing, drying, modification with 2N NaOH solution. Physico-chemical properties of groundnut shell powder, activated groundnut shell carbon and alkali-modified groundnut shell ash were measured by XRF, SEM and XRD respectively. Selected different process parameters like adsorbent dosage, contact time and initial effluent concentration were conducted for adsorption study to reduce colour and heavy metal in cottage textile industrial effluent. Colour removal efficiencies of adsorbents were determined by using UV spectrophotometer. The results obtained from this study were described by Freundlich and Langmuir adsorption isotherm. Treated Textile industrial effluents were characterized by biochemical oxygen demand (BOD), chemical oxygen demand (COD) and total dissolved solid (TDS). Heavy metal contents were analyzed by atomic absorption spectroscopy (AAS). The results indicate that Freundlich adsorption isotherm fitted the data better than the Langmuir adsorption isotherm. Maximum colour removal efficiencies 99.8% were obtained by treating with 1 g of MGA or AGC per 25 mL of cottage textile industrial effluent for 2 hr contact time of each treatment. Results suggested that AGC could be reduced (30.77) % of BOD and COD while MGA could be reduced (10.77%) of BOD and COD of cottage texitile industrial effluent. In this research, highly cadminum (Cd) removal efficiency (76%) of cottage texitile industrial effluent was obtained by alkali-modified groundnut shell ash(MGA). 2018 http://hdl.handle.net/20.500.12678/0000000550 https://meral.edu.mm/records/550