Comparative assessment for removal of anionic dye from water by different waste-derived biochar vis a vis reusability of generated sludge  

作　　者：Mayank Singh MohdAhsan Versha Pandey Anupama Singh Disha Mishra Neerja Tiwari Pooja Singh Tanmoy Karak Puja Khare 

机构地区：[1]Crop Production and Protection,Division,CSIR-Central Institute of Medicinal and Aromatic Plants,Lucknow 226015,India [2]Phytochemistry Division,CSIR-Central Institute of Medicinal and Aromatic Plants,Lucknow 226015,India [3]Upper Assam Advisory Centre,Tea Research Association,Dikom,Dibrugarh 786101,Assam,India [4]Academy of Scientific and Innovative Research(AcSIR),Gaziabad,India [5]Biotechnology Division,Central Institute of Medicinal and Aromatic Plants,Lucknow 226015,India

出　　处：《Biochar》2022年第1期986-1002,共17页生物炭（英文）

基　　金：financial support by the Department of Biotechnology(DBT),New Delhi(BT/PR24706/NER/95/822/2017)under the twinning program.

摘　　要：In this study,four biochars prepared from different crop residue waste i.e.sugarcane bagasse(SBB),coconut shell(CNB),paddy straw(PDB),and distilled waste of lemongrass(LGB)were evaluated for removal of Remazol Brilliant Blue R from the aqueous system.The RBBR adsorption capacities of biochar were 97-79%for SBB,99.9-99.47%for CNB,66.1-48%for PDB,and 78-68%for LGB,dominantly controlled by their aromaticity and mineral content.The Langmuir and Freundlich isotherms and pseudo-second-order kinetic models have described the chemisorption of RBBR on biochar surfaces.The thermodynamic data suggested that adsorption was spontaneous and endothermic.These biochars demonstrated excellent reusability(till four cycles with 50-61%regeneration).The purified water and biochar dye sludge demonstrated no phytotoxicity.The findings obtained in this study may provide supports for the potential of biochars for anionic dye removal from water and utilization of generated sludge for zero waste-producing technologies in the future.

关 键 词：BIOCHAR Remazol Brilliant Blue R Dye Adsorption Biochar dye sludge 

分 类 号：X70[环境科学与工程—环境工程]