Environment and Ecology Research Vol. 10(1), pp. 44 - 59
DOI: 10.13189/eer.2022.100105
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Performance of Treated and Untreated Spent Coffee Ground on the Removal of Cu (II) in Aqueous Solution: A Comparative Study

Aini Sofia Md Isa , Zadariana Jamil ^*
School of Civil Engineering, College of Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia

ABSTRACT

The performance of two types of spent coffee ground (SCG), (i) untreated spent coffee ground (USCG) and (ii) acid-treated spent coffee ground (TSCG) on the Cu (II) removal from aqueous solution was investigated and compared in this study. The effects of operating parameters such as pH, contact time and initial Cu (II) concentration on the adsorption rate were studied in batch adsorption mode. The USCG showed better results than the TSCG. The highest removal efficiency of Cu (II) (50 mg/L) by USCG was 91.03% with an adsorption capacity of 45.52 mg/g, which was achieved at pH 6 and 90 min of contact time. The TSCG showed lower performance with a removal efficiency of 44.18% and adsorption capacity of 37.06 mg/g. This may be due to the flushed off in the functional groups of SCG that used for metal binding in the adsorption during acid treatment and the existence of Cl- ions on the TSCG surface, interfering the Cu (II) adsorption and reduces its adsorption capacity. Freundlich fitted well with the equilibrium data for copper (II) removal, as indicated by the R2 coefficient, for USCG and TSCG were 0.9912 and 0.9622, respectively. These data indicate that both USCG and TSCG have high sorption capacity and affinity for metal ions. The USCG showed a better Cu (II) removal than the TSCG, indicating a promising function as a low-cost natural adsorbent for Cu (II) and also other heavy metals removals.

KEYWORDS
Spent Coffee Ground, Copper, Adsorption, Wastewater

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Aini Sofia Md Isa , Zadariana Jamil , "Performance of Treated and Untreated Spent Coffee Ground on the Removal of Cu (II) in Aqueous Solution: A Comparative Study," Environment and Ecology Research, Vol. 10, No. 1, pp. 44 - 59, 2022. DOI: 10.13189/eer.2022.100105.

(b). APA Format:
Aini Sofia Md Isa , Zadariana Jamil (2022). Performance of Treated and Untreated Spent Coffee Ground on the Removal of Cu (II) in Aqueous Solution: A Comparative Study. Environment and Ecology Research, 10(1), 44 - 59. DOI: 10.13189/eer.2022.100105.