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Isotherm and kinetic modelling for assessing the effectiveness of economical adsorbents in sewage water treatment

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Title Isotherm and kinetic modelling for assessing the effectiveness of economical adsorbents in sewage water treatment
 
Creator Jha, Ayushi
Garg, Sunil
Satpute, Sanjay
Prasad Singh, Jagdish
Singh, Dhanwinder
Gupta Phutela, Urmila
Chowdhury, Manojit
Singh, Derminder
 
Subject Agricultural waste
Adsorbents
Batch studies
Kinetic and isotherm models
Sewage water treatment
 
Description 438-450
In the face of growing environmental challenges and the urgent need for sustainable solutions, this research delves into an
innovative approach to wastewater treatment by harnessing the power of agricultural waste materials as efficient adsorbents.
The focuses on mitigating water pollution and bringing irrigation water quality in line with strict maximum permissible limits
(MPLs). Initial assessments revealed elevated levels of contaminants, all exceeding MPLs. Among ten adsorbent materials
tested, Rice Husk Ash (RHA), Sugarcane Bagasse (SB), and Ferric Oxide Sand (Fe-S), emerged as highly effective materials,
achieving maximum reductions. Optimized conditions for adsorbent dosage, contact time, and wastewater load were identified
which was 2.0 g of adsorbent, 250 mL of sewage water load at 15 min contact time. RHA demonstrated a remarkable 60-75%
reduction in BOD, 52-67% in COD, and over 100% in RSC reduction. SB achieved reductions of 57-67% in BOD, 47-59% in
COD, and 41-76% in RSC. Fe-S delivered significant reductions in COD (51-61%) and nearly 100% in RSC reduction. Kinetic
studies confirmed pseudo-second-order kinetics as the dominant adsorption mechanism, with correlation coefficients (R2)
exceeding 0.98, further supporting the effectiveness of these adsorbents. This research underscores the potential of agricultural
waste-based adsorbents, especially RHA and SB, in treating sewage water pollutants and making it fit for irrigation.
 
Date 2024-05-07T10:49:36Z
2024-05-07T10:49:36Z
2024-05
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/63871
https://doi.org/10.56042/ijct.v31i3.6265
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJCT Vol.31(3) [May 2024]