Natural rubber‐based industries in Southern Thailand are generating concentrated latex sewage sludge (CLS), which is commonly managed by landfilling practice that is causing serious environmental hazards. The purpose of this study was to develop a method to produce pellets using CLS and para‐wood sawdust as a potential biomass source for energy generation. The process started with dewatering the CLS through a decanter centrifuge. Then a flat die pellet mill was applied for copelletization. Finally, the pellets were investigated to evaluate the higher heating value and toxic heavy metals (Cu, Zn, Cr, As, Cd, and Pb) using proximate ‐ ultimate analysis, fourier transform infrared analysis, scanning electron microscopy, calorific value, thermogravimetric analysis, atomic absorption spectrometer, and inductively coupled plasma optical emission spectroscopy. The results showed that the addition of the para‐wood sawdust resulted in higher heating value and lower ash content of 3,620 ± 12 kcal/kg and 4.93 ± 0.98%, respectively. Besides, it has increased the carbon content of the pellet from 28.23 to 46.26% highest among all the samples. Furthermore, the method developed in this study is not only environmentally friendly but also economically sound than the earlier management of CLS.

中文翻译：

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废水污泥的能量转化

泰国南部的天然橡胶工业正在产生浓缩的乳胶污水污泥（CLS），通常通过填埋的方式对其进行管理，这会造成严重的环境危害。这项研究的目的是开发一种使用CLS和原木锯末作为潜在的生物质能源生产颗粒的方法。该过程开始于通过a析器离心机对CLS进行脱水。然后将平模造粒机用于造粒。最后，通过近似最终分析，傅立叶变换红外分析，扫描电子显微镜，热值，热重分析，对球团进行了研究，以评估较高的热值和有毒重金属（Cu，Zn，Cr，As，Cd和Pb）。原子吸收光谱仪 和电感耦合等离子体发射光谱。结果表明，添加的杂木锯末带来的发热量更高，灰分分别为3,620±12 kcal / kg和4.93±0.98％。此外，它使颗粒的碳含量从28.23增加到所有样品中的最高46.26％。此外，与CLS的早期管理相比，本研究中开发的方法不仅对环境友好，而且在经济上也合理。