Abstract
ObjectiveIn tannery processing, water consumption is high, which generates wastewater as a by-product and numerous pollutants such as chromium heavy metals that make adverse effects of water bodies and the surrounding environment. This study analyzed, chromium (VI) removal from wastewater through activated carbon chat stem was investigated. Adsorption is a common treatment method via activated carbon due to its cost-effective, profitable, and removal efficiency of these heavy metals.ResultsThe proximate analysis of moisture content of chat stem has 6%, activated carbon ash content of 17.35%, volatile materials of 20.12%, and fixed carbon contents of 56.53%, which are well-matched the standards quality of activated carbon. As the process parameter varies, the increment of the chromium removal efficiency was from 62.5 to 97.03%. The maximum adsorption efficiency was observed at 30 g/L dosage of the adsorbent, at pH 4, and contact time at 180 min of activated carbon from chat stem waste was found 97.03%. FTIR was used to characterize the surface of the chat stem before and after adsorption. Langmuir and Freundlich are used for short contact time’s adsorption isotherm 0.9839 and 0.9995 respectively, which conformed, no visible change in the corrosion state.
Highlights
We investigate using valuable activated carbons chat stem to treat wastewater generated from tannery effluents, for the removal of harmful chromium
Chromium is a heavy metal, which is very harmful to human health, animals, and environmental stability of the surrounding affected extremely when its absorption standard level goes beyond the permissible level
Chat stem activated carbon used as an adsorbent to remove chromium from wastewater since adsorption is a real treatment method due to; environmentally friendly, economical, and highly effective adsorbent
Summary
Water pollution is increasing rapidly, due to urbanization, population growth, and quick industrialization, at an increasing degree, frequently discharge a huge amount of potentially toxic chromium metals and untreated waste into surface and groundwater [1–4]. The waste released from tanneries process consumed 60–70% of total chromium, whereas, the rest of 30–40% remains unconsumed. This unconsumed chromium goes away with the industrial pollution due to the tanning process. We investigate using valuable activated carbons chat stem to treat wastewater generated from tannery effluents, for the removal of harmful chromium. Bayisa et al BMC Research Notes (2021) 14:431 by using low-cost adsorbent materials under different parameters
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