Photocatalytic degradation of malachite green using TiO2 and ZnO impregnated on fecal sludge derived biochar

孔雀绿 生物炭 光催化 吸附 降级(电信) 朗缪尔吸附模型 核化学 催化作用 废水 水溶液 化学 材料科学 环境工程 有机化学 热解 工程类 电信 计算机科学
作者
Nitika Tiwari,Sankha Chakrabortty,Kundan Samal,Sanjib Moulick,Benu Gopal Mohapatra,Sasmita Samanta,Priyabrat Mohapatra,Kali Sanjay,Jayato Nayak,Shirsendu Banerjee,Suraj K. Tripathy
出处
期刊:Journal of The Taiwan Institute of Chemical Engineers [Elsevier BV]
卷期号:145: 104800-104800 被引量:27
标识
DOI:10.1016/j.jtice.2023.104800
摘要

The present study focused on the degradation of malachite green (MG) dye which is extensively used in the aqua-culture and later disposed in water bodies. In order to treat the wastewater streams a sustainable and novel low cost material was synthesized using a waste i.e. fecal sludge. Later, the biochar obtained from the fecal sludge were impregnated with TiO2 and ZnOnano-particles to enhance its functional properties. The study reports the degradation of malachite green (MG) dye from aqueous solution under a parametric optimized condition by combined effect of adsorption and photocatalysis using TiO2 and ZnO impregnated on biochar (BC-TiO2-ZnO) synthesized from fecal sludge. The main contributing factors towards the dye degradation, namely catalyst dose (25–75 mg), dye concentration (50–150 mg/L), temperature (25–55 °C), pH (4–12) and stirring speed (50–250 rpm) were used as operation parameters for the experiments. The conditions thus obtained (catalyst dose of 50 mg, dye concentration of 100 mg/L, stirring speed of 150 rpm, temperature of 35 °C and at pH 8 for 30 min) were the optimal conditions for MG dye degradation (nearly 98% removal) using BC-TiO2-ZnO photocatalyst. Investigation revealed that adsorption-photocatalysis process is in good agreement with Langmuir-Hinshelwood kinetics. The kinetic data plots revealed the rate constant to be (k) = 0.087 min−1 having a 3% deviation from the experimental results (=0.09 min−1). Furthermore, the half-life of the reaction was calculated to be t1/2=7.7min while the value of R2 was 0.98. The photocatalyst showed no significant changes in its degradation efficiency even after 6th cycle indicating the appreciable reusability. MG has been used extensively in aquaculture as antimicrobial agent which leads to release of the residual molecules to the aquatic environment leading to multiplication of antibiotic resistant microbes. Therefore, the treated water obtained from the present process was investigated for its possible activity against E. coli and no remarkable antibacterial activity was noticed.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
lling完成签到 ,获得积分10
3秒前
听寒完成签到,获得积分10
5秒前
珍珠火龙果完成签到 ,获得积分10
8秒前
似水流年完成签到 ,获得积分10
9秒前
sysi完成签到 ,获得积分10
24秒前
绿波电龙完成签到,获得积分10
25秒前
28秒前
ZZzz完成签到 ,获得积分10
29秒前
wujiwuhui发布了新的文献求助10
33秒前
35秒前
梦梦的小可爱完成签到 ,获得积分10
35秒前
xinjie发布了新的文献求助10
38秒前
40秒前
蛋花肉圆汤完成签到,获得积分10
40秒前
羞涩的文轩完成签到 ,获得积分10
41秒前
46秒前
47秒前
北城完成签到 ,获得积分10
49秒前
量子星尘发布了新的文献求助10
49秒前
52秒前
爱听歌电灯胆完成签到 ,获得积分10
52秒前
不爱吃西葫芦完成签到 ,获得积分10
53秒前
申燕婷完成签到 ,获得积分10
54秒前
橙子完成签到 ,获得积分10
56秒前
ruochenzu发布了新的文献求助10
56秒前
fusheng完成签到 ,获得积分10
1分钟前
浮生完成签到 ,获得积分10
1分钟前
xinjie完成签到,获得积分10
1分钟前
Will完成签到,获得积分10
1分钟前
cuddly完成签到 ,获得积分10
1分钟前
掉头发的小白完成签到,获得积分10
1分钟前
不想看文献完成签到 ,获得积分10
1分钟前
1分钟前
当女遇到乔完成签到 ,获得积分10
1分钟前
独行者完成签到,获得积分10
1分钟前
眼睛大的电脑完成签到,获得积分10
1分钟前
1分钟前
敏敏发布了新的文献求助10
1分钟前
木木完成签到 ,获得积分10
1分钟前
量子星尘发布了新的文献求助10
1分钟前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4038066
求助须知:如何正确求助?哪些是违规求助? 3575779
关于积分的说明 11373801
捐赠科研通 3305584
什么是DOI,文献DOI怎么找? 1819239
邀请新用户注册赠送积分活动 892655
科研通“疑难数据库(出版商)”最低求助积分说明 815022