Circular Economy Pathway: Valorization of Cotton Stalk into Biochar for Textile Wastewater Treatment 10.32526/ennrj/24/20250255
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Abstract
Agricultural residues, often burned openly pose environmental challenges but offers opportunities for valorization into functional materials. Converting such residues into biochar supports circular economy principles. Here, cotton stalk (CS) was converted into phosphate-modified biochar (PMCS) via pyrolysis at 350, 550, and 800°C. Response Surface Methodology (RSM) was applied to the adsorption process, treating pyrolysis temperature as a categorical factor in a rotatable CCD. PMCS was characterized by Brunauer-Emmett-Teller (BET), Scanning Electron Microscopy (SEM), and Fourier Transform Infrared Spectroscopy (FTIR), Point of Zero Charge while adsorption was evaluated through isotherm and kinetic modeling for synthetic textile wastewater containing Eriochrome Black T (EBT), starch, and salts. PCS800 exhibited a BET analysis of 750 m² per gram of biochar and achieved nearly 77% COD reduction at 33 min and 6.43 g/L for synthetic wastewater, while 60% with complete decolorization for real effluent. The optimum removal followed Langmuir behaviour (qmax=90.2 mg/g, KL= 0.049 L/mg) with pseudo-second-order kinetics, reflecting micropore filling by starch. Overall, this study establishes a circular economy pathway by valorizing CS into an efficient adsorbent, mitigating residue burning while offering scalable potential for textile wastewater treatment.
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References
Agyemang E, Ofori-Dua K, Dwumah P, Forkuor JB. Towards responsible resource utilization: A review of sustainable vs. unsustainable reuse of wood waste. PLoS One 2024;19(12):e0312527.
Ahmad I, Farwa U, Khan ZUH, Imran M, Khalid MS, Zhu B, et al. Biosorption and health risk assessment of arsenic contaminated water through cotton stalk biochar. Surfaces and Interfaces 2022;29:Article No. 101806.
Ahmad Ridzuan NAN, Kasmuri N, Hamid KA, Nayono SE, Mojiri A, Selim H, et al. Remediation of palm oil mill effluent using citrus peel–based activated carbon. IOP Conference Series: Earth and Environmental Science 2025;1548:Article No. 1012030.
Ali J, Bakhsh EM, Hussain N, Bilal M, Akhtar K, Fagieh TM, et al. A new biosource for synthesis of activated carbon and its potential use for removal of methylene blue and eriochrome black T from aqueous solutions. Industrial Crops and Products 2022;179:Article No. 114676.
Arampatzidou AC, Voutsa D, Deliyanni EA, Matis KA. Adsorption of endocrine disruptor bisphenol A by carbonaceous materials: Influence of their porosity and specific surface area. Desalin Water Treat 2017;76:232-40.
Aritonang B, Ritonga AH, Harefa K, Herlina H. Reduction of BOD, COD, and TSS in textile wastewater using bentonite activated charcoal adsorbent. Jurnal Farmsimed 2025;7:381-9.
Arous F, Pinelli D, Bessadok S, Boudagga S, Hamdi C, Li W, et al. Performance and cost-benefit analyses of an integrated process for advanced treatment of highly saline textile wastewater at a semi-industrial scale. Euro-Mediterranean Journal for Environmental Integration 2024;9:605-20.
Bansal M, Patnala PK, Dugmore T. Adsorption of eriochrome Black-T(EBT) using tea waste as a low cost adsorbent by batch studies: A green approach for dye effluent treatments. Current Research in Green and Sustainable Chemistry 2020;3:Article No. 100036.
Beyan SM, Prabhu SV, Sissay TT, Getahun AA. Sugarcane bagasse based activated carbon preparation and its adsorption efficacy on removal of BOD and COD from textile effluents: RSM based modeling, optimization and kinetic aspects. Bioresource Technology Reports 2021;14:Article No. 100664.
Bhuvaneshwari S, Hettiarachchi H, Meegoda JN. Crop residue burning in India: Policy challenges and potential solutions. International Journal of Environmental Research and Public Health 2019;16(5):Article No. 832.
Castillo-Suárez LA, Sierra-Sánchez AG, Linares-Hernández I, Martínez-Miranda V, Teutli-Sequeira EA. A critical review of textile industry wastewater: Green technologies for the removal of indigo dyes. International Journal of Environmental Science and Technology 2023;20:10553-90.
Colmenares JC, Varma RS, Lisowski P. Sustainable hybrid photocatalysts: Titania immobilized on carbon materials derived from renewable and biodegradable resources. Green Chemistry 2016(21);18:5736-50.
da Costa WKOC, Gavazza S, Duarte MMMB, Freitas SKB, de Paula NTG, Paim APS. Preparation of activated carbon from sugarcane bagasse and removal of color and organic matter from Real Textile Wastewater. Water, Air, and Soil Pollution 2021;232:Article No. 358.
Cui Q, Huang Y, Ma X, Li S, Bai R, Li H, et al. Research on the adsorption mechanism and performance of cotton stalk-based biochar. Molecules 2024;29(24):Article No. 5841.
Dada AO, Adekola FA, Odebunmi EO, Ogunlaja AS, Bello OS. Two-three parameters isotherm modeling, kinetics with statistical validity, desorption and thermodynamic studies of adsorption of Cu(II) ions onto zerovalent iron nanoparticles. Scientific Reports 2021;11:Article No. 16454.
Deshpande MV, Kumar N, Pillai D, Krishna VV, Jain M. Greenhouse gas emissions from agricultural residue burning have increased by 75% since 2011 across India. Science of the Total Environment 2023;904:Article No. 166944.
Dhanya MS. Perspectives of agro-waste biorefineries for sustainable biofuels. In: Nandabalan YK, Garg VK, Labhsetwar NK, Singh A, editors. Zero Waste Biorefinery. Energy, Environment, and Sustainability. Singapore: Springer; 2022. p. 207-32.
Díaz B, Sommer-Márquez A, Ordoñez PE, Bastardo-González E, Ricaurte M, Navas-Cárdenas C. Synthesis methods, properties, and modifications of biochar-Based materials for wastewater treatment: A review. Resources 2024;13:Article No. 8.
Dowlatshah S, Hay AO, Noreng L, Hansen FA. A practical tutorial for optimizing electromembrane extraction methods by response surface methodology. Advances in Sample Preparation 2025;14:Article No. 100170.
Du K-Q, Li J-F, Farid MA, Wang W-H, Yang G. Preparation of high-efficient phosphoric acid modified biochar toward ciprofloxacin removal from wastewater. Industrial Crops and Products 2025;226:Article No. 120649.
Elnour AY, Alghyamah AA, Shaikh HM, Poulose AM, Al-Zahrani SM, Anis A, et al. Effect of pyrolysis temperature on biochar microstructural evolution, physicochemical characteristics, and its influence on biochar/polypropylene composites. Applied Sciences 2019;9:Article No. 1149.
Gao L, Li Z, Yi W, Li Y, Zhang P, Zhang A, et al. Impacts of pyrolysis temperature on lead adsorption by cotton stalk-derived biochar and related mechanisms. Journal of Environmental Chemical Engineering 2021;9(4):Article No. 105602.
Grover D, Chaudhry S. Ambient air quality changes after stubble burning in rice-wheat system in an agricultural state of India. Environmental Science and Pollution Research 2019;26:20550-9.
He M, Xu Z, Hou D, Gao B, Cao X, Ok YS, et al. Waste-derived biochar for water pollution control and sustainable development. Nature Reviews Earth and Environment 2022;3:444-60.
Heidarinejad Z, Dehghani MH, Heidari M, Javedan G, Ali I, Sillanpää M. Methods for preparation and activation of activated carbon: A review. Environmental Chemistry Letters 2020;18:393-415.
Hussain M, Imran M, Abbas G, Shahid M, Iqbal M, Naeem MA, et al. A new biochar from cotton stalks for As (V) removal from aqueous solutions: its improvement with H3PO4 and KOH. Environmental Geochemistry and Health 2020;42:2519-34.
Jegan J, Praveen S, Bhagavathi Pushpa T, Gokulan R. Sorption kinetics and isotherm studies of cationic dyes using groundnut (Arachis hypogaea) shell derived biochar a low-cost adsorbent. Applied Ecology and Environmental Research 2020;18(1):1925-39.
Kamran U, Bhatti HN, Noreen S, Tahir MA, Park S-J. Chemically modified sugarcane bagasse-based biocomposites for efficient removal of acid red 1 dye: Kinetics, isotherms, thermodynamics, and desorption studies. Chemosphere 2022;291:Article No. 132796.
Khalid U, Inam MA. The influence of pyrolysis temperature on the performance of cotton stalk biochar for hexavalent chromium removal from wastewater. Water, Air, and Soil Pollution 2024;235:Article No. 114.
Khan H, Hussain S, Hussain SF, Gul S, Ahmad A, Ullah S. Multivariate modeling and optimization of Cr(VI) adsorption onto carbonaceous material via response surface models assisted with multiple regression analysis and particle swarm embedded neural network. Environmental Technology and Innovation 2021;24:Article No. 101952.
Khurshid H, Mustafa MRU, Rashid U, Isa MH, Ho YC, Shah MM. Adsorptive removal of COD from produced water using tea waste biochar. Environmental Technology and Innovation 2021a;23:Artilce No. 101563.
Khurshid H, Mustafa MRU, Rashid U, Isa MH, Ho YC, Shah MM. Adsorptive removal of COD from produced water using tea waste biochar. Environmental Technology and Innovation 2021b;23:Article No. 101563.
Kwarciak-Kozłowska A, Fijałkowski KL. Efficiency assessment of municipal landfill leachate treatment during advanced oxidation process (AOP) with biochar adsorption (BC). Journal of Environmental Management 2021;287:Article No. 112309.
Li L, Zhang H, Liu Z, Su Y, Du C. Adsorbent biochar derived from corn stalk core for highly efficient removal of bisphenol A. Environmental Science and Pollution Research 2023;30(30):74916-27.
Li T, Li J-P, Li Z-P, Cheng X-W. Eco-friendly modified biochar for phosphate removal: Adsorption mechanism and application in pressed vegetable wastewater treatment. Environmental Engineering Science 2024a;41:401-12.
Li R, Zhang C, Hui J, Shen T, Zhang Y. The application of P-modified biochar in wastewater remediation: A state-of-the-art review. Science of the Total Environment 2024b;917:Article No. 170198.
Liu Q, Li D, Cheng H, Cheng J, Du K, Hu Y, et al. High mesoporosity phosphorus-containing biochar fabricated from Camellia oleifera shells: Impressive tetracycline adsorption performance and promotion of pyrophosphate-like surface functional groups (C-O-P bond). Bioresource Technology 2021;329:Article No. 124922.
Liu T, Fan X, Wu K, Tao C, Bai X, Sun X. Structural characteristics of biochars made from different parts of corn straw and their adsorption performances for methylene blue. Journal of Water Process Engineering 2024;68:Article No. 106562.
de Luna MDG, Flores ED, Genuino DAD, Futalan CM, Wan M-W. Adsorption of Eriochrome Black T (EBT) dye using activated carbon prepared from waste rice hulls—Optimization, isotherm and kinetic studies. Journal of the Taiwan Institute of Chemical Engineers 2013;44:646-53.
Manzar MS, Khan G, dos Santos Lins PV, Zubair M, Khan SU, Selvasembian R, et al. RSM-CCD optimization approach for the adsorptive removal of Eriochrome Black T from aqueous system using steel slag-based adsorbent: Characterization, Isotherm, Kinetic modeling and thermodynamic analysis. Journal of Molecular Liquids 2021;339:Article No. 116714.
Mortada W, Mohamed R, Monem A, Awad M, Hassan A. Effective and low-cost adsorption procedure for removing chemical oxygen demand from wastewater using chemically activated carbon derived from rice husk. Separations 2023;10:Article No. 43.
Muhammad A, Shafeeq A, Butt MA, Rizvi ZH, Chughtai MA, Rehman S. Decolorization and removal of cod and bodfrom raw and biotreated textile dye bath effluent through advanced oxidation processes (AOPS). Brazilian Journal of Chemical Engineering 2008;25:453-9.
Muzyka R, Misztal E, Hrabak J, Banks SW, Sajdak M. Various biomass pyrolysis conditions influence the porosity and pore size distribution of biochar. Energy 2023;263:Article No. 126128.
Ndoun MC, Knopf A, Preisendanz HE, Vozenilek N, Elliott HA, Veith TL, et al. Physicochemical characterization of biochar derived from the pyrolysis of cotton gin waste and walnut shells. Journal of the American Society of Agricultural and Biological Engineers 2023;66:1163-74.
Okafor CC, Madu CN, Ajaero CC, Ibekwe JC, Nzekwe CA. Sustainable management of textile and clothing. Clean Technologies and Recycling 2021;1(1):70-87.
Ou W, Lan X, Guo J, Cai A, Liu P, Liu N, et al. Preparation of iron/calcium-modified biochar for phosphate removal from industrial wastewater. Journal of Cleaner Production 2023;383:Article No. 135468.
Oyekanmi AA, Ahmad A, Hossain K, Rafatullah M. Adsorption of Rhodamine B dye from aqueous solution onto acid treated banana peel: Response surface methodology, kinetics and isotherm studies. PLoS One 2019;14:e0216878.
Park J-H, Wang JJ, Meng Y, Wei Z, DeLaune RD, Seo D-C. Adsorption/desorption behavior of cationic and anionic dyes by biochars prepared at normal and high pyrolysis temperatures. Colloids and Surfaces A: Physicochemical and Engineering 2019;572:274-82.
Patel H. Removal of COD, BOD and color of different industrial effluents using activated neem char. Environmental Advances 2024;16:Article No. 100553.
Rajabian E, Sharififard H, Bonyadi M, Boostani F, Moradialvand M. COD reduction of municipal wastewater using mesoporous walnut shell-activated carbon: One step synthesis-modification via chemical activation with FeCl3. Biomass Conversion and Biorefinery 2024;14:30627-40.
Roy H, Prantika TR, Riyad M, Paul S, Islam MS. Synthesis, characterizations, and RSM analysis of Citrus macroptera peel derived biochar for textile dye treatment. South African Journal of Chemical Engineering 2022;41:129-39.
Sadeghi S, Zakeri HR, Saghi MH, Ghadiri SK, Talebi SS, Shams M, et al. Modified wheat straw-derived graphene for the removal of Eriochrome Black T: Characterization, isotherm, and kinetic studies. Environmental Science and Pollution Research 2021;28:3556-65.
Sathya K, Nagarajan K, Carlin Geor Malar G, Rajalakshmi S, Raja Lakshmi P. A comprehensive review on comparison among effluent treatment methods and modern methods of treatment of industrial wastewater effluent from different sources. Applied Water Science 2022;12:Article No. 70.
Shah AJ, Soni B, Karmee SK. Application of cotton stalk biochar as a biosorbent for the removal of malachite green and its microwave-assisted regeneration. Energy, Ecology and Environment 2022;7:88-96.
Shao M, Ding ZC, Yang YZ, Zhang ZP, Wan YS. Phosphoric acid-modified biochar enhances electrokinetic in situ leaching technology to remediate Pb2+ contaminated soil. International Journal of Environmental Science and Technology 2024;21:8507-18.
Soleimani H, Sharafi K, Amiri Parian J, Jaafari J, Ebrahimzadeh G. Acidic modification of natural stone for Remazol Black B dye adsorption from aqueous solution- central composite design (CCD) and response surface methodology (RSM). Heliyon 2023;9(4):e14743.
Srivastav AL, Rani L, Sharda P, Patel A, Patel N, Chaudhary VK. Sustainable biochar adsorbents for dye removal from water: present state of art and future directions. Adsorption 2024;30:1791-804.
Susaimanickam A, Manickam P, Joseph AA. A Comprehensive review on RSM-Coupled optimization techniques and its applications. Archives of Computational Methods in Engineering 2023;30:4831-53.
Tan W-T, Zhou H, Tang S-F, Zeng P, Gu J-F, Liao B-H. Enhancing Cd(II) adsorption on rice straw biochar by modification of iron and manganese oxides. Environmental Pollution 2022;300:Article No. 118899.
Tomczyk A, Sokołowska Z, Boguta P. Biochar physicochemical properties: Pyrolysis temperature and feedstock kind effects. Reviews in Environmental Science and Bio/Technology 2020;19:191-215.
Tzanakakis VA, Capodaglio AG, Angelakis AN. Insights into global water reuse opportunities. Sustainability 2023;15(17):Article No. 13007.
Vakili A, Zinatizadeh AA, Rahimi Z, Zinadini S, Mohammadi P, Azizi S, et al. The impact of activation temperature and time on the characteristics and performance of agricultural waste-based activated carbons for removing dye and residual COD from wastewater. Journal of Cleaner Production 2023;382:Article No. 134899.
Venkatesan A, Srividhya B, Alajmi A, Sadeq AM, Chava RK, Habila MA, et al. High adsorption capacities of rhodamine B dye by activated carbon synthesized from cotton stalks agricultural waste by chemical activation. Ceramics International 2025;51(10):13345-54.
Walanda DK, Anshary A, Napitupulu M, Walanda RM. The utilization of corn stalks as biochar to adsorb BOD and COD in hospital wastewater. International Journal of Design and Nature and Ecodynamics 2022;17:113-8.
Wang M, Wang G, Qian L, Yong X, Wang Y, An W, et al. Biochar production using biogas residue and their adsorption of ammonium nitrogen and chemical oxygen demand in wastewater. Biomass Convers Biorefinery 2023;13:3881-92.
Wu S, Wu H. Incorporating biochar into wastewater eco-treatment systems: Popularity, reality, and complexity. Environmental Science and Technology 2019;53:3345-6.
Xiang W, Zhang X, Cao C, Quan G, Wang M, Zimmerman AR, et al. Microwave-assisted pyrolysis derived biochar for volatile organic compounds treatment: Characteristics and adsorption performance. Bioresource Technology 2022;355:Article No. 127274.
Xu J, Fu M, Ma Q, Zhang X, You C, Shi Z, et al. Modification of biochar by phosphoric acid via wet pyrolysis and using it for adsorption of methylene blue. RSC Advances 2023;13(22): 15327-33.
Xu Q, Li C, Sumita, Pang W. Study on the removal efficacy and mechanism of phosphorus from wastewater by eggshell‐modified biochar. Water Environment Research 2024;96(3): e10998.
Yaseen DA, Scholz M. Textile dye wastewater characteristics and constituents of synthetic effluents: a critical review. International Journal of Environmental Science and Technology 2019;16:1193-226.
Yusuff AS, Ishola NB, Gbadamosi AO, Epelle EI. Modeling and optimization of hexavalent chromium adsorption by activated eucalyptus biochar using response surface methodology and adaptive neuro-fuzzy inference system. Environments 2023;10(3):Article No. 55.
Zafar S, Razzaq A, Khalid S, Tariq TZ, Fatima R, Rabbani F, et al. Recent Advances in Applications of Engineered Biochar for Wastewater Treatment. In: Catalytic Applications of Biochar for Environmental Remediation: A Green Approach Towards Environment Restoration (Vol. 1). American Chemical Society Pubilcations; 2024. p. 109-30.
Zeng X-Y, Wang Y, Li R-X, Cao H-L, Li Y-F, Lü J. Impacts of temperatures and phosphoric-acid modification to the physicochemical properties of biochar for excellent sulfadiazine adsorption. Biochar 2022;4:Article No. 14.
Zeng Y, Lin Y, Ma M, Chen H. A review on the removal of heavy metals from water by phosphorus-enriched biochar. Minerals 2024;14(1):Article No. 61.
Zhao A, Liu S, Yao J, Huang F, He Z, Liu J. Characteristics of bio-oil and biochar from cotton stalk pyrolysis: Effects of torrefaction temperature and duration in an ammonia environment. Bioresource Technology 2022;343:Article No. 126145.
Zhao L, Zheng W, Mašek O, Chen X, Gu B, Sharma BK, et al. Roles of phosphoric acid in biochar formation: Synchronously improving carbon retention and sorption capacity. Journal of Environmental Quality 2017;46 (2):393-401.
Zhou F, Li K, Hang F, Zhang Z, Chen P, Wei L, et al. Efficient removal of methylene blue by activated hydrochar prepared by hydrothermal carbonization and NaOH activation of sugarcane bagasse and phosphoric acid. RSC Advances 2022;12(3): 1885-96.
Zhu X, Labianca C, He M, Luo Z, Wu C, You S, et al. Life-cycle assessment of pyrolysis processes for sustainable production of biochar from agro-residues. Bioresource Technology 2022;360:Article No. 127601.
