Biological remediation of alkaline cement kiln dust for sustainable environment

P. Kunal; A. Rajor; R. Siddique

Biological remediation of alkaline cement kiln dust for sustainable environment

in Industrial, medical and environmental applications of microorganisms

Autor:innen:

P. Kunal

P. Kunal ¹School of Energy and Environment, Thapar University, Patiala 147004 Punjab, India; kunal_pau@yahoo.co.in

Search for other papers by P. Kunal in
Current site
Google Scholar
PubMed

A. Rajor

A. Rajor ¹School of Energy and Environment, Thapar University, Patiala 147004 Punjab, India; kunal_pau@yahoo.co.in

Search for other papers by A. Rajor in
Current site
Google Scholar
PubMed

, und

R. Siddique

R. Siddique ²Department of Civil Engineering, Thapar University, Patiala 147004 Punjab, India

Search for other papers by R. Siddique in
Current site
Google Scholar
PubMed

Art:: Kapitel

Seiten:: 52–58

DOI:: https://doi.org/10.3920/9789086867950_008

Über Institut einloggen

Sofortzugang erwerben (PDF-Download und unbegrenzter Online-Zugang):

42,00 €35,00 € excl. VAT

Add to Cart

Token einlösen

The problem of disposing and managing solid waste materials in the industrial countries has become one of the major environmental, economical, and social issues. During manufacturing of cement a waste by-product, known as cement kiln dust (CKD) is generated which accounts for 15-20% of the cementclinker production. In year 2012, 3,400 million metric tons of clinker was produced worldwide resulted in approximately 510-680 million metric tons of CKD generation. CKD is removed from the cement kiln as a precaution against materials such as heavy metals, chlorides and alkalis that may cause the clinker to be out of specification limits. CKD that cannot re-utilize goes to landfill and poses threat to environment due to heavy metals and alkalinity. Therefore it is necessary to remediate cement dust before landfilling or utilizing. In this study, we aimed to reduce the alkalinity of CKD by isolating a bacterial isolate from textile industry effluent capable of growing under highly alkaline conditions (pH 11-12). CKD used in this study had pH 12.15 and contains high alkali content (1,467 mg/l) in leachate. CKD treated with Bacillus sp. KGMD1 showed decrease in 1.66 pH units and 69.8% alkalinity in leachate after 20 days of treatment at 35±2 °C. Decrease in 24.11% (compound percent) K₂O, 8.85% SO₃ content (analyzed by EDX technique) and absence of crystalline alkali sulfate phases (using XRD) in powdered CKD treated with bacterial isolate was also observed. Study was also conducted on the metal content in the cement dust. After bacterial treatment decrease in concentration of Cr, Co, Cu, Fe, Pb, Ag, Cd, Ni, Zn and Mo was observed compared to control treatment. This showed that CKD with reduced alkali and metal content on land filling imparts a less negative impact on environment and contamination of soil and groundwater could be minimized.

Zitierungsangaben

Save
Cite
Inhalt per Mail versenden

Link teilen

Sie können einen Link zu dieser Seite per E-Mail senden:
Inhalt per Mail versenden
oder den Link direkt kopieren:

https://brill.edhh.ma/abstract/book/9789086867950/BP000008.xml
Der Link wurde nicht kopiert. Ihr aktueller Browser unterstützt das Kopieren über diese Schaltfläche möglicherweise nicht.

Link wurde kopiert

Reduzieren
Erweitern
Nach oben

Industrial, medical and environmental applications of microorganisms

Current status and trends

ISBN:: 9789086867950

Verleger:: Wageningen Academic

Print-Publikationsdatum:: 01 Nov 2014

Fachgebiete
- Biowissenschaften

Kennzahlen

	Insgesamt	Letzte 365 Tage	In den letzten 30 Tagen
Aufrufe von Kurzbeschreibungen	455	149	6
Gesamttextansichten	16	3	0
PDF-Downloads	1	0	0

Afrikanistik	Internationale Beziehungen	Nahost- und Islamwissenschaften
Altorientalistik und Ägyptologie	Internationales Recht	Pädagogik
Amerikanistik	Judaistik	Philosophie
Asienwissenschaften	Klassische Altertumswissenschaft	Religionswissenschaft
Bibelauslegung	Kunstgeschichte	Slawistik und Eurasienkunde
Biologie	Literatur- und Kulturwissenschaften	Sozialwissenschaften
Biowissenschaften	Medienwissenschaft	Sprachen und Linguistik
Buchgeschichte und Kartographie	Menschenrechte und humanitäres Völkerrecht	Theologie und Christentum
Geschichte	Musikwissenschaft

Fachgebiete

Autor:innen

Open Access

Produkt-Informationen

Über uns

Kontakt

Biological remediation of alkaline cement kiln dust for sustainable environment

Zitierungsangaben

Link teilen

Industrial, medical and environmental applications of microorganisms

Current status and trends

Inhaltsverzeichnis

Kennzahlen

Kennzahlen