Bulletin of Environmental Contamination and Toxicology ( IF 2.7 ) Pub Date : 2021-09-18 , DOI: 10.1007/s00128-021-03374-6 Arun Lal Srivastav 1 , Tien Duc Pham 2 , Sylvester Chibueze Izah 3 , Nirankar Singh 4 , Prabhat Kumar Singh 5
Arsenic intake can cause human health disorders to the lungs, urinary tract, kidney, liver, hyper-pigmentation, muscles, neurological and even cancer. Biochar is potent, economical and ecologically sound adsorbents for water purification. After surface modifications, adsorption capacity of biochar significantly increased due to high porosity and reactivity. Adsorption capacities of the biochar derived from the municipal solid waste and KOH mixed municipal solid waste were increased from 24.49 and 30.98 mg/g for arsenic adsorption. Complex formation, electrostatic behavior and ion exchange are important mechanisms for arsenic adsorption. Organic arsenic removal using biochar is a major challenge. Hence, more innovative research should be conducted to achieve one of the 17 sustainable development goals of the United Nations i.e. “providing safe drinking water for all”. This review is focused on the arsenic removal from water using pristine and modified biochar adsorbents. Recent advances in production methods of biochar adsorbents and mechanisms of arsenic removal from water are also illustrated.
中文翻译:
生物炭吸附剂去除水环境中的砷:综述
砷的摄入会导致人类肺部、泌尿道、肾脏、肝脏、色素沉着过度、肌肉、神经系统甚至癌症的健康障碍。Biochar 是用于水净化的有效、经济和生态无害的吸附剂。表面改性后,由于高孔隙率和反应性,生物炭的吸附能力显着提高。来自城市固体废物和 KOH 混合城市固体废物的生物炭对砷的吸附能力从 24.49 和 30.98 mg/g 增加。络合物的形成、静电行为和离子交换是砷吸附的重要机制。使用生物炭去除有机砷是一项重大挑战。因此,应该进行更多的创新研究,以实现联合国的 17 个可持续发展目标之一,即“为所有人提供安全的饮用水”。这篇综述的重点是使用原始和改性生物炭吸附剂从水中去除砷。还说明了生物炭吸附剂生产方法的最新进展以及从水中去除砷的机制。