Valorisation of Waste Wood Biomass as Biosorbent for the Removal of Synthetic Dye Methylene Blue from Aqueous Solutions

IF 0.7 Q3 FORESTRY

SEEFOR-South-East European Forestry Pub Date : 2018-11-26 DOI:10.15177/SEEFOR.18-13

Natalija Velić, Marija Stjepanović, L. Begović, M. Habuda-Stanić, D. Velić, T. Jakovljević

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引用次数: 11

Abstract

Background and Purpose: Wood and wood processing industries are generators of a substantial amount of waste wood biomass, such as wood chips, shavings and sawdust. Such waste is often unused and its disposal can be a serious environmental problem. Different lignocellulosic waste materials have been successfully used as low-cost adsorbents (biosorbents) for the removal of synthetic dyes, as well as other contaminants, from wastewater. The aim of this study was to valorise the waste wood biomass of ten tree species, out of which seven are the most represented species of the Croatian growing stock, as biosorbents for the removal of synthetic dye methylene blue (MB) from model solutions. Materials and Methods: The waste wood biomasses (shavings or sawdust) of ten tree species, namely common beech, pedunculate oak, sessile oak, common hornbeam, narrow-leafed ash, poplar, European silver fir, Norway spruce, European larch and Douglas fir, were dried and milled prior to characterisation and adsorption experiments. Characterisation of the biosorbents was performed by chemical analysis and Fourier transform Fourier transform infrared spectroscopy (FTIR). Upon characterisation, batch adsorption experiments were conducted in order to survey waste wood biomass as potential adsorbents for the removal of synthetic dye MB. The colour removal was monitored spectrophotometrically at predetermined time intervals. Further adsorption experiments were performed using poplar sawdust. The effects of contact time, biosorbent concentration, initial dye concentration, and pH on the adsorption process were investigated. The experimental data obtained by batch adsorption experiments were analysed using adsorption isotherm models (Freundlich and Langmuir). Results: All the tested biosorbents were found to be very effective for the removal of MB from model dye solution, achieving high removal percentages ranging from 93.25 to 98.50%. Poplar sawdust proved to be the most effective. It was shown that MB adsorption process onto poplar sawdust could be interpreted in terms of Langmuir and Freundlich adsorption isotherm models. Conclusions: Taken together, these results suggest that waste wood biomass has the potential to be used as a low-cost biosorbent for MB removal from aqueous solutions.

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废木材生物质作为生物吸附剂去除水溶液中合成染料亚甲基蓝的研究

背景和目的:木材和木材加工业是大量废木材生物质的产生者，如木片、刨花和锯末。这些废物通常是未使用的，其处置可能是一个严重的环境问题。不同的木质纤维素废料已经成功地用作低成本的吸附剂(生物吸附剂)，用于去除废水中的合成染料和其他污染物。本研究的目的是评估10种树种的废木材生物量，其中7种是克罗地亚生长的最具代表性的树种，作为生物吸附剂，用于从模型溶液中去除合成染料亚甲基蓝(MB)。材料和方法:在进行表征和吸附实验之前，将10种树种的废木材生物质(刨花或锯末)，即普通山毛榉、有梗橡树、无梗橡树、普通角梁、窄叶灰、杨树、欧洲银杉、挪威云杉、欧洲落叶松和花旗松进行干燥和研磨。通过化学分析和傅里叶变换红外光谱(FTIR)对生物吸附剂进行了表征。在进行表征后，进行了批量吸附实验，以调查废木材生物质作为去除合成染料MB的潜在吸附剂。在预定的时间间隔用分光光度法监测脱色。用杨木木屑进行了进一步的吸附实验。考察了接触时间、生物吸附剂浓度、初始染料浓度和pH对吸附过程的影响。采用Freundlich和Langmuir吸附等温线模型对间歇吸附实验得到的实验数据进行了分析。结果:所测试的生物吸附剂对模型染料溶液中MB的去除率均非常有效，去除率在93.25 ~ 98.50%之间。杨木木屑被证明是最有效的。结果表明，MB在杨木木屑上的吸附过程可以用Langmuir和Freundlich吸附等温线模型来解释。综上所述，这些结果表明，废木材生物质有潜力作为一种低成本的生物吸附剂，用于从水溶液中去除MB。

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

SEEFOR-South-East European Forestry FORESTRY-

CiteScore

1.20

自引率

16.70%

发文量

审稿时长

8 weeks

期刊介绍： The primary aim of the SEEFOR journal is to publish original, novel and quality articles and thus contribute to the development of scientific, research, operational and other activities in the field of forestry. Besides scientific, the objectives of the SEEFOR are educational and informative as well. SEEFOR should stimulate intensive professional and academic work, teaching, as well as physical cooperation of institutions and interdisciplinary collaboration, a faster ascendance and affirmation of young scientific personnel. SEEFOR should contribute to the stronger cooperation between the science, practice and society, and to the overall dissemination of the forestry way-of thinking. The scope of the journal’s interests encompasses all ecological, economical, technical, technological, social and other aspects of forestry and wood technology. The journal is open for publishing research from all geographical zones and study locations, whether they are conducted in natural forests, plantations or urban environments, as long as methods used in the research and obtained results are of high interest and importance to South-east European and international forestry.