Comparative Effectiveness of Durian Peel and Coconut Shell Charcoal Biofilters for Calcium Carbonate Reduction in Groundwater: Experimental Study in Palu City

  • Hamidah Faculty of Public Health, Universitas Muhammadiyah Palu, Sulawesi Tengah, Indonesia
  • Nur Rismawati Universitas Muhammadiyah Palu
DOI: https://doi.org/10.56338/promotif.v16i1.9629
Keywords: water hardness, calcium carbonate, biofilter, durian peel charcoal, coconut shell charcoal, adsorption, decentralised water treatment

Abstract

Introduction: Water hardness caused by high concentrations of calcium carbonate is a persistent problem in many groundwater-dependent communities, including Palu City, Central Sulawesi, Indonesia. Excessive hardness reduces water acceptability, increases household maintenance costs, and contributes to scaling in pipes and storage systems. This study aimed to evaluate the effectiveness of two locally available organic-waste materials—durian peel charcoal and coconut shell charcoal—as low-cost biofilter media for reducing calcium carbonate concentrations in household well water.

Method: A laboratory-based experimental design was applied using batch adsorption methods. Groundwater samples with an initial calcium carbonate concentration of 568 milligrams per litre were treated with varying masses of each adsorbent and different contact times. The study examined combinations of adsorbent mass and exposure time to determine optimal operating conditions. Calcium carbonate levels before and after treatment were measured using standard titration techniques to assess removal efficiency.

Results: The results demonstrated that both organic-waste biofilters were capable of substantially lowering hardness levels. Durian peel charcoal achieved its best performance at a moderate adsorbent mass and short contact time, showing rapid adsorption kinetics and high affinity for hardness-related ions. Coconut shell charcoal also produced significant reductions but required greater mass and longer contact time to reach optimal effectiveness. The findings confirmed that adsorption performance was nonlinear and strongly influenced by operational parameters, material characteristics, and initial contaminant concentration. Comparison of the two media indicated that each possesses distinct advantages, highlighting the importance of context-specific optimisation for practical application.

Conclusion: Overall, the study shows that transforming locally abundant agricultural wastes into biofilter media offers a feasible and affordable strategy for decentralised water treatment. The research contributes new comparative evidence on the use of durian peel and coconut shell charcoal for hardness reduction and supports their potential use in household-scale systems. If validated under field conditions, these findings may support the development of affordable household-scale strategies for improving the acceptability of drinking water in resource-limited communities.

References

  1. Bykowska-Derda A, Spycha?a M, Cz?apka-Matyasik M, Sojka M, Bykowski J, Ptak M. The Relationship Between Mortality From Cardiovascular Diseases and Total Drinking Water Hardness: Systematic Review With Meta-Analysis. Foods. 2023;12(17):3255. doi:10.3390/foods12173255
  2. Cormick G, Matamoros N, Romero I, Perez SM, White C, Watson D, et al. Testing for Sensory Threshold in Drinking Water With Added Calcium: A First Step Towards Developing a Calcium Fortified Water. Gates Open Res. 2022;5:151. doi:10.12688/gatesopenres.13361.2
  3. Matamoros N, Puchulu MB, Lerner JEC, Maury?Sintjago E, Bulnes JL, Sosio V, et al. Feasibility of Increasing Calcium Content of Drinking Tap Water Following Quality Regulations to Improve Calcium Intake at Population Level. Gates Open Res. 2024;8:5. doi:10.12688/gatesopenres.15184.2
  4. Liu Q, Zhuang Y, Zhang Y, Qi Z, Edwards M, Shi B. Stability of Cement Mortar Lining in Drinking Water Supply Pipelines Under Different Hardness and Alkalinity Conditions. Acs Es&t Water. 2022;2(12):2519–27. doi:10.1021/acsestwater.2c00329
  5. Padilla-González PA, Bautista-Capetillo C, Ruiz-Canales A, González-Trinidad J, Júnez-Ferreira HE, Rodríguez ARC, et al. Characterization of Scale Deposits in a Drinking Water Network in a Semi-Arid Region. Int J Environ Res Public Health. 2022;19(6):3257. doi:10.3390/ijerph19063257
  6. Ahmed J, Wong LP, Chua YP, Channa N. Drinking Water Quality Mapping Using Water Quality Index and Geospatial Analysis in Primary Schools of Pakistan. Water (Basel). 2020;12(12):3382. doi:10.3390/w12123382
  7. Gutiérrez-Laffon YM, Muñoz-Talango DG, Abatal M, Anguebes-Franseschi F. Técnicas Y Materiales Aplicados Para El Ablandamiento De Agua. 2025;283–302. doi:10.26359/epomex01202514
  8. Abidola TB, Olaoye J, Lawan AB, Oladeinde JO, Tobi AS. Development of Sustainable Water Treatment Technologies for Communities Using Low Cost Adsorbents. 2025;36–42. doi:10.38124/ijsrmt.v4i3.373
  9. Atta HA, Hummadi KK, M?Ridha MJ. A Sustainable Raw Rice Husk Adsorbent for Effective Levofloxacin Removal From Aqueous Solution: Kinetic, Thermodynamic and Isotherm Studies. Iraqi Journal of Agricultural Sciences. 2023;54(5):1407–20. doi:10.36103/ijas.v54i5.1841
  10. Yusop MFM, Ahmad MA, Rosli NA, Gonawan FN, Abdullah SJ. Scavenging Malachite Green Dye From Aqueous Solution Using Durian Peel Based Activated Carbon. Malaysian Journal of Fundamental and Applied Sciences. 2021;17(1):95–103. doi:10.11113/mjfas.v17n1.2173
  11. Desa SS, Ishii T, Nueangnoraj K. Sulfur-Doped Carbons From Durian Peels, Their Surface Characteristics, and Electrochemical Behaviors. ACS Omega. 2021;6(38):24902–9. doi:10.1021/acsomega.1c03760
  12. Amelia S, Aktawan A, Putri MR. Utilization of Kaolin Soil and Activated Carbon From Banana Peel Waste as Adsorbent Fe3+ on Well Water. J Phys Conf Ser. 2025;2989(1):012012. doi:10.1088/1742-6596/2989/1/012012
  13. Jurado-Davila V, Oliveira JT d., Féris LA. Analytical Perspective and Modeling of Breakthrough Curves for a Fixed-Bed Column of Modified Dolomite by Calcination and Ultrasound for Phosphate Immobilization: Experimental Design, Bayesian Statistics, and Data Prediction. Ind Eng Chem Res. 2023;63(1):551–65. doi:10.1021/acs.iecr.3c03477
  14. Worku Z, Tibebu S, Nure JF, Tibebu S, Moyo W, Ambaye AD, et al. Adsorption of Chromium From Electroplating Wastewater Using Activated Carbon Developed From Water Hyacinth. BMC Chem. 2023;17(1). doi:10.1186/s13065-023-00993-4
  15. Das S, Pal A, Debnath A. Polyaniline?Coated Magnesium Ferrite Nanocomposite: Synthesis, Characterization, Fabrication Cost Analysis and Dye Sorption Behavior With Scale?Up Design. ChemistrySelect. 2023;8(29). doi:10.1002/slct.202300928
  16. Kalsido AW, Meshesha BT, Behailu BM, Alemayehu E. Optimization of Fluoride Adsorption on Acid Modified Bentonite Clay Using Fixed-Bed Column by Response Surface Method. Molecules. 2021;26(23):7112. doi:10.3390/molecules26237112
  17. Torres E. Biosorption: A Review of the Latest Advances. Processes. 2020;8(12):1584. doi:10.3390/pr8121584
  18. Thurston JR, Marshak MP, Reber D. Monitoring Ion Exchange Chromatography With Affordable Flame Emission Spectroscopy. J Chem Educ. 2022;99(12):4051–6. doi:10.1021/acs.jchemed.2c00455
  19. Cela-Dablanca R, Barreiro A, Rodríguez-López L, Santás-Miguel V, Arias?Estévez M, Fernández?Sanjurjo MJ, et al. Amoxicillin Retention/Release in Agricultural Soils Amended With Different Bio-Adsorbent Materials. Materials. 2022;15(9):3200. doi:10.3390/ma15093200
  20. Bensaada S, Chabrier F, Ginisty P, Ferrand C, Peruzzi G, Valat M, et al. Improved Food-Processing Techniques to Reduce Isoflavones in Soy-Based Foodstuffs. Foods. 2023;12(7):1540. doi:10.3390/foods12071540
  21. Saricheewin K. Circular Innovation in Water Treatment: Durian Peel?Based Activated Carbon for Efficient Arsenic(III) Adsorption. Environmental Quality Management. 2025;35(2). doi:10.1002/tqem.70251
  22. Ajien A, Idris J, Sofwan NM, Husen R, Seli H. Coconut Shell and Husk Biochar: A Review of Production and Activation Technology, Economic, Financial Aspect and Application. Waste Management & Research the Journal for a Sustainable Circular Economy. 2022;41(1):37–51. doi:10.1177/0734242x221127167
  23. Omoruwou F, Edegbe UD, Madojemu GO. Removal of Total Hydrocarbon From Oilfield Produced Water Using Activated Carbon Prepared From Coconut Shells. Journal of Applied Sciences and Environmental Management. 2022;26(11):1861–8. doi:10.4314/jasem.v26i11.19
  24. Ahmed AS, Alsultan M, Hameed RT, Assim YF, Swiegers GF. High Surface Area Activated Charcoal for Water Purification. Journal of Composites Science. 2022;6(10):311. doi:10.3390/jcs6100311
  25. Lutfi M, Hanafi H, Susilo BA, Prasetyo J, Sandra S, Prajogo U. Characteristics of Activated Carbon From Coconut Shell (Cocos Nucifera) Through Chemical Activation Process. IOP Conf Ser Earth Environ Sci. 2021;733(1):012134. doi:10.1088/1755-1315/733/1/012134
  26. Banat ?M, Carboué Q, Saucedo?Castañeda G, Cázares?Marinero J d. J. Biosurfactants: The Green Generation of Speciality Chemicals and Potential Production Using Solid-State Fermentation (SSF) Technology. Bioresour Technol. 2021;320:124222. doi:10.1016/j.biortech.2020.124222
  27. Ekanayake D, Loganathan P, Johir MAH, Kandasamy J, Vigneswaran S. Enhanced Removal of Nutrients, Heavy Metals, and PAH From Synthetic Stormwater by Incorporating Different Adsorbents Into a Filter Media. Water Air Soil Pollut. 2021;232(3). doi:10.1007/s11270-021-05059-6
Published
2026-06-26
Issue
Vol. 16 No. 1: JUNE 2026 (On Progress)
Section
Original Articles

Copyright (c) 2026 Hamidah, Nur Rismawati

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