Characterization of Empty Fruit Bunch Biochar Pyrolyzed at Different Temperatures with Respect to Activated Carbon and their Sorption Capacities for Pentachlorophenol

Q3 Environmental Science

Journal of Water and Environment Technology Pub Date : 2020-01-01 DOI:10.2965/jwet.20-013

Puvaneswaree Nalaya, S. Wahid, Halmi Effendi Mohd. Izuan

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引用次数: 5

Abstract

Pentachlorophenol (PCP) has been used extensively in the wood preservation industry. It is highly persistent in the environment and toxic to living organisms. The present study investigated the effectiveness of an oil palm empty fruit bunch biochar (EFBB) pyrolyzed at 350, 550 and 650°C in adsorbing PCP as compared to a commercial activated carbon (AC). The ash content, surface area and aromaticity increased while the pore volume, cation exchange capacity, O/C and (O+N)/C molar ratios decreased as the pyrolysis temperature increased. Only the EFBB pyrolyzed at 350°C and the AC adsorbed the PCP while no PCP adsorption was observed on the EFBBs pyrolyzed at 550°C and 650°C. The Langmuir maximum adsorption capacity ( Q max ) values was 6.035 mg g −1 , and 126.582 mg g −1 for the 350°C EFBB and the AC, respectively. The higher porosity and more oxygenated functional groups of the EFBB pyrolyzed at 350°C EFBB could be the reason for its ability to adsorb the PCP compared to the other EFBBs. The high PCP sorption by the AC on the other hand, could be attributed to its high surface area and microporous structure.

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不同温度下热解空果束生物炭的活性炭特性及其对五氯酚的吸附性能

五氯酚(PCP)在木材防腐工业中得到了广泛的应用。它在环境中具有高度持久性，对生物体有毒。本研究考察了在350、550和650℃热解的油棕榈空果串生物炭(EFBB)吸附PCP的效果，并与商业活性炭(AC)进行了比较。随着热解温度的升高，灰分含量、比表面积和芳香性增加，孔隙体积、阳离子交换容量、O/C和(O+N)/C摩尔比降低。350℃热解的EFBB只吸附了PCP，而550℃和650℃热解的EFBB没有吸附PCP。350℃EFBB和AC的Langmuir最大吸附量(Q max)分别为6.035 mg g−1和126.582 mg g−1。在350℃下热解的EFBB具有更高的孔隙率和更多的含氧官能团，这可能是其吸附PCP能力较其他EFBB的原因。另一方面，活性炭对PCP的高吸附性可归因于其高表面积和微孔结构。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Water and Environment Technology Environmental Science-Water Science and Technology

CiteScore

1.80

自引率

0.00%

发文量

审稿时长

43 weeks

期刊介绍： The Journal of Water and Environment Technology is an Open Access, fully peer-reviewed international journal for all aspects of the science, technology and management of water and the environment. The journal’s articles are clearly placed in a broader context to be relevant and interesting to our global audience of researchers, engineers, water technologists, and policy makers. JWET is the official journal of the Japan Society on Water Environment (JSWE) published in English, and welcomes submissions that take basic, applied or modeling approaches to the interesting issues facing the field. Topics can include, but are not limited to: water environment, soil and groundwater, drinking water, biological treatment, physicochemical treatment, sludge and solid waste, toxicity, public health and risk assessment, test and analytical methods, environmental education and other issues. JWET also welcomes seminal studies that help lay the foundations for future research in the field. JWET is committed to an ethical, fair and rapid peer-review process. It is published six times per year. It has two article types: Original Articles and Review Articles.