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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2023.2
- 수록면
- 25 - 33 (9page)
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Recent investigations have revealed the harmful health effects of elevated calcium levels in drinking water. Chemically activated biochar is the most popular option for low-cost cation adsorption. However, most of these chemicals are hardly available for rural communities, corrosive, and difficult to handle by unskilled personnel. This study aimed to determine the ability of natural coconut vinegar, a common mild acid, to activate Trema orientalis wood biochar pyrolyzed at 300˚C (BC) as a facile, safe, and low-cost approach for aqueous calcium ion (Ca<SUP>2+</SUP>) removal. Column tests showed a two-fold increase of Ca<SUP>2+</SUP> adsorption capacity and a ten-fold increase of Ca<SUP>2+</SUP> retaining capacity of BC after activation with vinegar. The isotherm results were well correlated with the Langmuir model. The maximum Langmuir adsorption of the activated biochar (BC-A) was 9.96 mg/g. Ca<SUP>2+</SUP> amount was determined using flame photometry. EDX analysis showed that the O/C ratio of BC increased from 0.07 to 0.13 after activation. FTIR and wettability studies showed increased oxygenated functional groups on the BC-A surface. The authors suggest a possible acid-catalyzed hydration of the C-O-C bridges of the biochar, introducing new hydroxyl/carbonyl/ester/carboxylic/lactone groups to the biochar surface due to the vinegar activation, enhancing Ca<SUP>2+</SUP> adsorption through chemisorption.
목차
ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References
참고문헌 (44)
참고문헌 신청
Progress on household drinking water, sanitation and hygiene 2000-2017: Special focus on inequalities [Internet]. New York: United Nations Children’s Fund (UNICEF) and World Health Organization; 2019 [cited 15 January 2021]. Available from: http://www.eph
Awoyemi OM, Achudume AC, Okoya AA. The Physicochemical Quality of Groundwater in Relation to Surface Water Pollution in Majidun Area of Ikorodu, Lagos State, Nigeria. Am. J. Water Resour. 2014;2(5):126-133.
Chandrajith R, Dissanayake CB, Ariyarathna T, Herath HMJMK, Padmasiri JP. Dose-dependent Na and Ca in fluoride-rich drinking water-Another major cause of chronic renal failure in tropical arid regions. Sci. Total Environ. 2010;409:671-675.
Perera T, Ranasinghe S, Alles N, Waduge R. Experimental rat model for acute tubular injury induced by high water hardness and high water fluoride: efficacy of primary preventive intervention by distilled water administration. BMC Nephrol. 2020;21(1):103.
Paranagama PA. Potential link between ground water hardness, arsenic content and prevalence of CKDu. In: Symposium on Chronic Kidney Disease of Uncertain etiology (CKDU)-A Scientific Basis for Future Action; 10 December 2013; Colombo. p. 19-26.
Awoyemi OM, Achudume AC, Okoya AA. The Physicochemical Quality of Groundwater in Relation to Surface Water Pollution in Majidun Area of Ikorodu, Lagos State, Nigeria. Am. J. Water Resour. 2014;2(5):126-133.
Chandrajith R, Dissanayake CB, Ariyarathna T, Herath HMJMK, Padmasiri JP. Dose-dependent Na and Ca in fluoride-rich drinking water-Another major cause of chronic renal failure in tropical arid regions. Sci. Total Environ. 2010;409:671-675.
Perera T, Ranasinghe S, Alles N, Waduge R. Experimental rat model for acute tubular injury induced by high water hardness and high water fluoride: efficacy of primary preventive intervention by distilled water administration. BMC Nephrol. 2020;21(1):103.
Paranagama PA. Potential link between ground water hardness, arsenic content and prevalence of CKDu. In: Symposium on Chronic Kidney Disease of Uncertain etiology (CKDU)-A Scientific Basis for Future Action; 10 December 2013; Colombo. p. 19-26.
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